Rebuild assets

Merge remote-tracking branch 'origin/dependabot/npm_and_yarn/js/follow-redirects-1.15.6'
Merge remote-tracking branch 'origin/dependabot/npm_and_yarn/js/webpack-dev-middleware-5.3.4'
2025-04-04 18:00:28 +00:00 · 2024-03-25 12:08:45 -07:00 · 2024-03-25 11:32:33 -07:00 · 2024-03-25 11:32:17 -07:00 · 2024-03-25 11:30:46 -07:00 · 2024-03-25 10:55:26 -07:00
86 changed files with 13820 additions and 38 deletions
--- a/.all-contributorsrc
+++ b/.all-contributorsrc
@ -0,0 +1,528 @@
+{
+  "projectName": "gotty",
+  "projectOwner": "sorenisanerd",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": true,
+  "commitConvention": "none",
+  "contributors": [
+    {
+      "login": "yudai",
+      "name": "Iwasaki Yudai",
+      "avatar_url": "https://avatars.githubusercontent.com/u/33192?v=4",
+      "profile": "https://yudai.arielworks.com/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "sorenisanerd",
+      "name": "Soren L. Hansen",
+      "avatar_url": "https://avatars.githubusercontent.com/u/160090?v=4",
+      "profile": "http://linux2go.dk/",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "uovobw",
+      "name": "Andrea Lusuardi",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1194751?v=4",
+      "profile": "https://github.com/uovobw",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "moul",
+      "name": "Manfred Touron",
+      "avatar_url": "https://avatars.githubusercontent.com/u/94029?v=4",
+      "profile": "https://github.com/moul",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "svanellewee",
+      "name": "Stephan",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1567439?v=4",
+      "profile": "https://github.com/svanellewee",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "QuentinPerez",
+      "name": "Quentin Perez",
+      "avatar_url": "https://avatars.githubusercontent.com/u/3081204?v=4",
+      "profile": "https://fr.linkedin.com/in/quentinperez",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "jizhilong",
+      "name": "jzl",
+      "avatar_url": "https://avatars.githubusercontent.com/u/816618?v=4",
+      "profile": "https://github.com/jizhilong",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "fazalmajid",
+      "name": "Fazal Majid",
+      "avatar_url": "https://avatars.githubusercontent.com/u/331198?v=4",
+      "profile": "https://majid.info/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "Immortalin",
+      "name": "Immortalin",
+      "avatar_url": "https://avatars.githubusercontent.com/u/7126128?v=4",
+      "profile": "https://narrationbox.com/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "freakhill",
+      "name": "freakhill",
+      "avatar_url": "https://avatars.githubusercontent.com/u/916582?v=4",
+      "profile": "https://github.com/freakhill",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "0xflotus",
+      "name": "0xflotus",
+      "avatar_url": "https://avatars.githubusercontent.com/u/26602940?v=4",
+      "profile": "https://github.com/0xflotus",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "skeltoac",
+      "name": "Andy Skelton",
+      "avatar_url": "https://avatars.githubusercontent.com/u/52292?v=4",
+      "profile": "https://andy.blog/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "artdevjs",
+      "name": "Artem Medvedev",
+      "avatar_url": "https://avatars.githubusercontent.com/u/7567983?v=4",
+      "profile": "https://twitter.com/artdevjs",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "blakejennings",
+      "name": "Blake Jennings",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1976331?v=4",
+      "profile": "https://github.com/blakejennings",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "jensenbox",
+      "name": "Christian Jensen",
+      "avatar_url": "https://avatars.githubusercontent.com/u/189265?v=4",
+      "profile": "https://github.com/jensenbox",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "TechWilk",
+      "name": "Christopher Wilkinson",
+      "avatar_url": "https://avatars.githubusercontent.com/u/9367803?v=4",
+      "profile": "https://wilk.tech/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "RealCyGuy",
+      "name": "Cyrus",
+      "avatar_url": "https://avatars.githubusercontent.com/u/54488650?v=4",
+      "profile": "https://github.com/RealCyGuy",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "dehorsley",
+      "name": "David Horsley",
+      "avatar_url": "https://avatars.githubusercontent.com/u/3401668?v=4",
+      "profile": "https://github.com/dehorsley",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "Jason-Cooke",
+      "name": "Jason Cooke",
+      "avatar_url": "https://avatars.githubusercontent.com/u/5185660?v=4",
+      "profile": "https://jasoncooke.dev/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "DenKoren",
+      "name": "Denis Korenevskiy",
+      "avatar_url": "https://avatars.githubusercontent.com/u/3419381?v=4",
+      "profile": "https://github.com/DenKoren",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "stucchimax",
+      "name": "Massimiliano Stucchi",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1331438?v=4",
+      "profile": "https://www.stucchi.ch/",
+      "contributions": [
+        "code"
+      ]
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+      "login": "Felixoid",
+      "name": "Mikhail f. Shiryaev",
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+      "profile": "https://www.linkedin.com/in/felixoid/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "guywithnose",
+      "name": "Robert Bittle",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1059169?v=4",
+      "profile": "https://github.com/guywithnose",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "sehaas",
+      "name": "sebastian haas",
+      "avatar_url": "https://avatars.githubusercontent.com/u/283482?v=4",
+      "profile": "https://deebas.com/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "shoz",
+      "name": "shoji",
+      "avatar_url": "https://avatars.githubusercontent.com/u/225194?v=4",
+      "profile": "https://github.com/shoz",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "tsl0922",
+      "name": "Shuanglei Tao",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1680515?v=4",
+      "profile": "https://github.com/tsl0922",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "gitter-badger",
+      "name": "The Gitter Badger",
+      "avatar_url": "https://avatars.githubusercontent.com/u/8518239?v=4",
+      "profile": "https://gitter.im/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "xinsnake",
+      "name": "Jacob Zhou",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1287677?v=4",
+      "profile": "https://github.com/xinsnake",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "zyfdegh",
+      "name": "zyfdegh",
+      "avatar_url": "https://avatars.githubusercontent.com/u/7880217?v=4",
+      "profile": "https://github.com/zyfdegh",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "fredster33",
+      "name": "fredster33",
+      "avatar_url": "https://avatars.githubusercontent.com/u/64927044?v=4",
+      "profile": "https://github.com/fredster33",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "mattn",
+      "name": "mattn",
+      "avatar_url": "https://avatars.githubusercontent.com/u/10111?v=4",
+      "profile": "https://mattn.kaoriya.net/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "shingt",
+      "name": "Shinichi Goto",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1391330?v=4",
+      "profile": "https://www.shingt.com/",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "ygit",
+      "name": "ygit",
+      "avatar_url": "https://avatars.githubusercontent.com/u/8512357?v=4",
+      "profile": "https://twitter.com/_yogeshsingh",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "nephaste",
+      "name": "Stéphane",
+      "avatar_url": "https://avatars.githubusercontent.com/u/3392684?v=4",
+      "profile": "http://forum.cachem.fr/viewforum.php?f=21",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "prusnak",
+      "name": "Pavol Rusnak",
+      "avatar_url": "https://avatars.githubusercontent.com/u/42201?v=4",
+      "profile": "https://rusnak.io/",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "devanlai",
+      "name": "Devan Lai",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1348448?v=4",
+      "profile": "https://github.com/devanlai",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "jkandasa",
+      "name": "Jeeva Kandasamy",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1004403?v=4",
+      "profile": "https://github.com/jkandasa",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "hardliner66",
+      "name": "Steve Biedermann",
+      "avatar_url": "https://avatars.githubusercontent.com/u/2937272?v=4",
+      "profile": "https://twitch.tv/iamhardliner",
+      "contributions": [
+        "code"
+      ]
+    },
+    {
+      "login": "xgdgsc",
+      "name": "xgdgsc",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1189869?v=4",
+      "profile": "https://github.com/xgdgsc",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "flechaig",
+      "name": "flechaig",
+      "avatar_url": "https://avatars.githubusercontent.com/u/10887132?v=4",
+      "profile": "https://github.com/flechaig",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "Fan-SJ",
+      "name": "Fan-SJ",
+      "avatar_url": "https://avatars.githubusercontent.com/u/49977708?v=4",
+      "profile": "https://github.com/Fan-SJ",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "dmartin",
+      "name": "Dustin Martin",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1657652?v=4",
+      "profile": "https://github.com/dmartin",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "ahmetb",
+      "name": "Ahmet Alp Balkan",
+      "avatar_url": "https://avatars.githubusercontent.com/u/159209?v=4",
+      "profile": "https://ahmet.dev/",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "CoconutMacaroon",
+      "name": "CoconutMacaroon",
+      "avatar_url": "https://avatars.githubusercontent.com/u/45187468?v=4",
+      "profile": "https://github.com/CoconutMacaroon",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "DannyBen",
+      "name": "Danny Ben Shitrit",
+      "avatar_url": "https://avatars.githubusercontent.com/u/2405099?v=4",
+      "profile": "https://github.dannyben.com/",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "George-NG",
+      "name": "George-NG",
+      "avatar_url": "https://avatars.githubusercontent.com/u/28577165?v=4",
+      "profile": "https://github.com/George-NG",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "ghthor",
+      "name": "Will Owens",
+      "avatar_url": "https://avatars.githubusercontent.com/u/160298?v=4",
+      "profile": "https://github.com/ghthor",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "jpillora",
+      "name": "Jaime Pillora",
+      "avatar_url": "https://avatars.githubusercontent.com/u/633843?v=4",
+      "profile": "https://jpillora.com/",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "kaisawind",
+      "name": "kaisawind",
+      "avatar_url": "https://avatars.githubusercontent.com/u/4010613?v=4",
+      "profile": "https://github.com/kaisawind",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "linyinli",
+      "name": "linyinli",
+      "avatar_url": "https://avatars.githubusercontent.com/u/42955482?v=4",
+      "profile": "https://github.com/linyinli",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "LucaMarconato",
+      "name": "LucaMarconato",
+      "avatar_url": "https://avatars.githubusercontent.com/u/2664412?v=4",
+      "profile": "https://github.com/LucaMarconato",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "masterkain",
+      "name": "Kain",
+      "avatar_url": "https://avatars.githubusercontent.com/u/12844?v=4",
+      "profile": "https://audiobox.fm/",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "Nexuist",
+      "name": "Andi Andreas",
+      "avatar_url": "https://avatars.githubusercontent.com/u/1498061?v=4",
+      "profile": "http://duro.me/",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "qigj",
+      "name": "qigj",
+      "avatar_url": "https://avatars.githubusercontent.com/u/56585735?v=4",
+      "profile": "https://github.com/qigj",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "shuaiyy",
+      "name": "shuaiyy",
+      "avatar_url": "https://avatars.githubusercontent.com/u/19821321?v=4",
+      "profile": "https://github.com/shuaiyy",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "v20z",
+      "name": "v20z",
+      "avatar_url": "https://avatars.githubusercontent.com/u/2884824?v=4",
+      "profile": "https://github.com/v20z",
+      "contributions": [
+        "bug"
+      ]
+    },
+    {
+      "login": "Yann-Qiu",
+      "name": "Yanfeng Qiu",
+      "avatar_url": "https://avatars.githubusercontent.com/u/56961747?v=4",
+      "profile": "https://github.com/Yann-Qiu",
+      "contributions": [
+        "bug"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7
+}
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@ -0,0 +1,49 @@
+name: "Unit and Build Tests"
+
+on:
+  push:
+  pull_request:
+    branches: [ master ]
+
+
+jobs:
+  bundle-up-to-date:
+    runs-on: "ubuntu-latest"
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+    - uses: actions/setup-go@v3
+      with:
+        go-version: 1.19
+    - uses: actions/setup-node@v3
+      with:
+        node-version: 16
+    - run: "make clean"
+    - run: "make assets"
+    - name: "Make sure gotty.js bundle is up-to-date"
+      run: "diffsize=$(git diff bindata/static/js/gotty.js |  wc -l); test $diffsize == 0"
+
+
+  cross-compile-test:
+    runs-on: "ubuntu-latest"
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.19
+
+    - name: "Build & test"
+      run: "make tools test cross_compile"
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: binaries
+        path: builds/pkg/*/gotty
--- a/.github/workflows/pre-release.yaml
+++ b/.github/workflows/pre-release.yaml
@ -0,0 +1,42 @@
+---
+name: "pre-release"
+
+on: [push]
+
+env:
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  pre-release-docker:
+    name: "Pre Release Docker"
+    runs-on: "ubuntu-latest"
+    steps:
+    -
+      name: Docker meta
+      id: meta
+      uses: docker/metadata-action@v4
+      with:
+        images: ${{ env.IMAGE_NAME }}
+        tags: |
+          type=raw,value=latest,enable={{is_default_branch}}
+          type=sha,format=long
+          type=sha
+          type=semver,pattern=v{{major}}.{{minor}}.{{patch}}
+          type=semver,pattern=v{{major}}.{{minor}}
+          type=semver,pattern=v{{major}}
+          type=ref,event=tag
+          type=ref,event=branch
+
+    - uses: docker/setup-qemu-action@v2
+    - uses: docker/setup-buildx-action@v2
+    - uses: docker/login-action@v2
+      with:
+        username: "${{ secrets.DOCKER_HUB_USER }}"
+        password: "${{ secrets.DOCKER_HUB_TOKEN }}"
+    - name: "Build and push docker image"
+      uses: docker/build-push-action@v4
+      with:
+        platforms: linux/amd64,linux/arm/v7,linux/arm64
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
--- a/.github/workflows/quick-build.yaml
+++ b/.github/workflows/quick-build.yaml
@ -0,0 +1,30 @@
+name: "Quick build test"
+
+on:
+  push:
+  pull_request:
+    branches: [ master ]
+
+
+jobs:
+  quick-build-test:
+    runs-on: "ubuntu-latest"
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.19
+
+    - name: "Build"
+      run: "touch bindata/* bindata/*/* ; make"
+
+    - name: Upload linux/amd64 artifact
+      uses: actions/upload-artifact@v3
+      with:
+        name: gotty-linux-amd64
+        path: gotty
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@ -0,0 +1,40 @@
+---
+name: "tagged-release"
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  tagged-release:
+    name: "Tagged Release"
+    runs-on: "ubuntu-latest"
+
+    steps:
+    - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
+
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.19
+
+    - name: "Build & test"
+      run: "make tools test release-artifacts"
+
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: binaries
+        path: builds/pkg/*/gotty
+
+    - uses: "marvinpinto/action-automatic-releases@latest"
+      with:
+        repo_token: "${{ secrets.GITHUB_TOKEN }}"
+        prerelease: false
+        draft: true
+        files: |
+          LICENSE
+          builds/dist/*
--- a/.gitignore
+++ b/.gitignore
@ -1,4 +1,4 @@
 gotty
-bindata
 builds
+js/dist
 js/node_modules/*
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "amodio.tsl-problem-matcher"
+    ]
+}
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@ -0,0 +1,27 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Launch GoTTY",
+            "type": "go",
+            "buildFlags": "-tags=dev",
+            "request": "launch",
+            "mode": "debug",
+            "program": "${workspaceFolder}",
+            "args": ["-a", "127.0.0.1", "-w", "${env:SHELL}"]
+        },
+        {
+            "name": "Launch Chrome",
+            "type": "chrome",
+            "url": "http://127.0.0.1:8080",
+            "webRoot": "${workspaceFolder}/js",
+            "outFiles": [
+                "${workspaceFolder}/**/*.js",
+                "!**/node_modules/**"
+            ],
+        },
+    ]
+}
--- a/.vscode/tasks.json
+++ b/.vscode/tasks.json
@ -0,0 +1,16 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "webpack watch",
+            "type": "shell",
+            "command": "cd ${workspaceFolder}/js;DEV=1 npx webpack --watch --mode=development",
+            "problemMatcher": [
+                "$ts-webpack-watch"
+            ],
+            "isBackground": true
+        }
+    ]
+}
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -0,0 +1,44 @@
+# How to contribute
+
+GoTTY is MIT licensed and accepts contributions via GitHub pull requests. We also accepts feature requests on GitHub issues.
+
+## Reporting a bug
+
+Reporting a bug is always welcome and one of the best ways to contribute. A good bug report helps the developers to improve the product much easier. We therefore would like to ask you to fill out the quesions on the issue template as much as possible. That helps us to figure out what's happening and discover the root cause.
+
+
+## Requesting a new feature
+
+When you find that GoTTY cannot fullfill your requirements because of lack of ability, you may want to open a new feature request. In that case, please file a new issue with your usecase and requirements.
+
+
+## Opening a pull request
+
+### Code Style
+
+Please run `go fmt` on your Go code and make sure that your commits are organized for each logical change and your commit messages are in proper format (see below).
+
+[Go's official code style guide](https://github.com/golang/go/wiki/CodeReviewComments) is also helpful.
+
+### Format of the commit message
+
+When you write a commit message, we recommend include following information to make review easier and keep the history cleaerer.
+
+* What is the change
+* The reason for the change
+
+The following is an example:
+
+```
+Add something new to existing package
+
+Since the existing function lacks that mechanism for some purpose,
+this commit adds a new structure to provide it.
+```
+
+When your pull request is to add a new feature, we recommend add an actual usecase so that we can discuss the best way to achive your requirement. Opening a proposal issue in advance is another good way to start discussion of new features.
+
+
+## Contact
+
+If you have a trivial question about GoTTY for a bug or new feature, you can contact @sorenisanerd on Twitter (unfortunately, I cannot provide support on GoTTY though).
--- a/20
+++ b/20
@ -0,0 +1,20 @@
+FROM node:16 as js-build
+WORKDIR /gotty
+COPY js /gotty/js
+COPY Makefile /gotty/
+RUN make bindata/static/js/gotty.js.map
+
+FROM golang:1.20 as go-build
+WORKDIR /gotty
+COPY . /gotty
+COPY --from=js-build /gotty/js/node_modules /gotty/js/node_modules
+COPY --from=js-build /gotty/bindata/static/js /gotty/bindata/static/js
+RUN CGO_ENABLED=0 make
+
+FROM alpine:latest
+RUN apk update && \
+    apk upgrade && \
+    apk --no-cache add ca-certificates bash
+WORKDIR /root
+COPY --from=go-build /gotty/gotty /usr/bin/
+CMD ["gotty",  "-w", "bash"]
--- a/2
+++ b/2
@ -1,7 +1,7 @@
 The MIT License (MIT)

 Copyright (c) 2015-2017 Iwasaki Yudai
-Copyright (c) 2021 Søren L. Hansen
+Copyright (c) 2021-2022 Søren L. Hansen

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
--- a/92
+++ b/92
@ -0,0 +1,92 @@
+OUTPUT_DIR = ./builds
+GIT_COMMIT = `git rev-parse HEAD | cut -c1-7`
+VERSION = $(shell git describe --tags)
+BUILD_OPTIONS = -ldflags "-X main.Version=$(VERSION)"
+
+ifeq ($(DEV), 1)
+	BUILD_OPTIONS += -tags dev
+	WEBPACK_MODE = development
+else
+	WEBPACK_MODE = production
+endif
+
+export CGO_ENABLED=0
+
+gotty: main.go assets server/*.go webtty/*.go backend/*.go Makefile
+	go build ${BUILD_OPTIONS}
+
+docker:
+	docker build . -t gotty-bash:$(VERSION)
+
+.PHONY: all docker assets
+assets: bindata/static/js/gotty.js.map \
+	bindata/static/js/gotty.js \
+	bindata/static/index.html \
+	bindata/static/icon.svg \
+	bindata/static/favicon.ico \
+	bindata/static/css/index.css \
+	bindata/static/css/xterm.css \
+	bindata/static/css/xterm_customize.css \
+	bindata/static/manifest.json \
+	bindata/static/icon_192.png
+
+all: gotty
+
+bindata/static bindata/static/css bindata/static/js:
+	mkdir -p $@
+
+bindata/static/%: resources/% | bindata/static/css 
+	cp "$<" "$@"
+
+bindata/static/css/%.css: resources/%.css | bindata/static 
+	cp "$<" "$@"
+
+bindata/static/css/xterm.css: js/node_modules/xterm/css/xterm.css | bindata/static
+	cp "$<" "$@"
+
+js/node_modules/xterm/dist/xterm.css:
+	cd js && \
+	npm install
+
+bindata/static/js/gotty.js.map bindata/static/js/gotty.js: js/src/* | js/node_modules/webpack
+	cd js && \
+	npx webpack --mode=$(WEBPACK_MODE)
+
+js/node_modules/webpack:
+	cd js && \
+	npm install
+
+README-options:
+	./gotty --help | sed '1,/GLOBAL OPTIONS/ d' > options.txt.tmp
+	sed -f README.md.sed -i README.md
+	rm options.txt.tmp
+
+tools:
+	go install github.com/mitchellh/gox@latest
+	go install github.com/tcnksm/ghr@latest
+
+test:
+	if [ `go fmt $(go list ./... | grep -v /vendor/) | wc -l` -gt 0 ]; then echo "go fmt error"; exit 1; fi
+	go test ./...
+
+cross_compile:
+	GOARM=5 gox -os="darwin linux freebsd netbsd openbsd solaris" -arch="386 amd64 arm arm64" -osarch="!darwin/386" -osarch="!darwin/arm" $(BUILD_OPTIONS) -output "${OUTPUT_DIR}/pkg/{{.OS}}_{{.Arch}}/{{.Dir}}"
+
+targz:
+	mkdir -p ${OUTPUT_DIR}/dist
+	cd ${OUTPUT_DIR}/pkg/; for osarch in *; do (cd $$osarch; tar zcvf ../../dist/gotty_${VERSION}_$$osarch.tar.gz ./*); done;
+
+shasums:
+	cd ${OUTPUT_DIR}/dist; sha256sum * > ./SHA256SUMS
+
+release-artifacts: gotty cross_compile targz shasums
+
+release:
+	ghr -draft ${VERSION} ${OUTPUT_DIR}/dist # -c ${GIT_COMMIT} --delete --prerelease -u sorenisanerd -r gotty ${VERSION}
+
+clean:
+	rm -fr gotty builds js/dist bindata/static js/node_modules
+
+addcontributors:
+	gh issue list -s all -L 1000 --json author -t "$$(echo '{{ range . }}{{ .author.login }}\n{{ end }}')" | sort | uniq | xargs -Ifoo all-contributors add foo bug --commitTemplate '<%= (newContributor ? "Add" : "Update") %> @<%= username %> as a contributor'
+	gh pr list -s all -L 1000 --json author -t "$$(echo '{{ range . }}{{ .author.login }}\n{{ end }}')" | sort | uniq | xargs -Ifoo all-contributors add foo code --commitTemplate '<%= (newContributor ? "Add" : "Update") %> @<%= username %> as a contributor'
--- a/NEWS.md
+++ b/NEWS.md
@ -0,0 +1,102 @@
+## 1.5.0 (2022-09-01)
+
+* Add @ahmetb as a contributor ([276767a](https://github.com/sorenisanerd/gotty/commit/276767a))
+* Add @CoconutMacaroon as a contributor ([74c1318](https://github.com/sorenisanerd/gotty/commit/74c1318))
+* Add @DannyBen as a contributor ([fcfa161](https://github.com/sorenisanerd/gotty/commit/fcfa161))
+* Add @dmartin as a contributor ([6b2ae89](https://github.com/sorenisanerd/gotty/commit/6b2ae89))
+* Add @Fan-SJ as a contributor ([c2428c8](https://github.com/sorenisanerd/gotty/commit/c2428c8))
+* Add @flechaig as a contributor ([2c4004d](https://github.com/sorenisanerd/gotty/commit/2c4004d))
+* Add @George-NG as a contributor ([270ae45](https://github.com/sorenisanerd/gotty/commit/270ae45))
+* Add @ghthor as a contributor ([1a6bccd](https://github.com/sorenisanerd/gotty/commit/1a6bccd))
+* Add @jpillora as a contributor ([f52fbd7](https://github.com/sorenisanerd/gotty/commit/f52fbd7))
+* Add @kaisawind as a contributor ([accff3a](https://github.com/sorenisanerd/gotty/commit/accff3a))
+* Add @linyinli as a contributor ([8014af3](https://github.com/sorenisanerd/gotty/commit/8014af3))
+* Add @LucaMarconato as a contributor ([3bd9836](https://github.com/sorenisanerd/gotty/commit/3bd9836))
+* Add @masterkain as a contributor ([369e2f7](https://github.com/sorenisanerd/gotty/commit/369e2f7))
+* Add @Nexuist as a contributor ([ca691bc](https://github.com/sorenisanerd/gotty/commit/ca691bc))
+* Add @qigj as a contributor ([5a052e7](https://github.com/sorenisanerd/gotty/commit/5a052e7))
+* Add @shuaiyy as a contributor ([95e1bbd](https://github.com/sorenisanerd/gotty/commit/95e1bbd))
+* Add @v20z as a contributor ([d594bef](https://github.com/sorenisanerd/gotty/commit/d594bef))
+* Add @xgdgsc as a contributor ([c197990](https://github.com/sorenisanerd/gotty/commit/c197990))
+* Add @Yann-Qiu as a contributor ([7b994ec](https://github.com/sorenisanerd/gotty/commit/7b994ec))
+* Update @flechaig as a contributor ([9877e9c](https://github.com/sorenisanerd/gotty/commit/9877e9c))
+* Update @flechaig as a contributor ([e03ea9c](https://github.com/sorenisanerd/gotty/commit/e03ea9c))
+* Update @prusnak as a contributor ([3c45888](https://github.com/sorenisanerd/gotty/commit/3c45888))
+* Update @prusnak as a contributor ([8d7f5fc](https://github.com/sorenisanerd/gotty/commit/8d7f5fc))
+* Update @sorenisanerd as a contributor ([34f516b](https://github.com/sorenisanerd/gotty/commit/34f516b))
+* Update @sorenisanerd as a contributor ([89a04d1](https://github.com/sorenisanerd/gotty/commit/89a04d1))
+* Update @xgdgsc as a contributor ([b3c5d03](https://github.com/sorenisanerd/gotty/commit/b3c5d03))
+* Update @xgdgsc as a contributor ([09f7e95](https://github.com/sorenisanerd/gotty/commit/09f7e95))
+* Add make target to add contributors ([1bbfd5e](https://github.com/sorenisanerd/gotty/commit/1bbfd5e))
+* Add missing import "strings" ([d0e3ffb](https://github.com/sorenisanerd/gotty/commit/d0e3ffb))
+* add slash ([7706bf2](https://github.com/sorenisanerd/gotty/commit/7706bf2))
+* Always disable CGO ([7a96f37](https://github.com/sorenisanerd/gotty/commit/7a96f37)), closes [#39](https://github.com/sorenisanerd/gotty/issues/39)
+* Bump terser from 5.12.1 to 5.14.2 in /js ([3ae13e0](https://github.com/sorenisanerd/gotty/commit/3ae13e0))
+* Create a release when a new tag is pushed ([d8fe975](https://github.com/sorenisanerd/gotty/commit/d8fe975))
+* Ensure --quiet flag is honored ([7d431a7](https://github.com/sorenisanerd/gotty/commit/7d431a7)), closes [#45](https://github.com/sorenisanerd/gotty/issues/45)
+* Refresh dependencies, drop node-sass ([94e5873](https://github.com/sorenisanerd/gotty/commit/94e5873))
+* Run tests on pull requests ([316d5ff](https://github.com/sorenisanerd/gotty/commit/316d5ff))
+
+
+## 1.4.0 (2022-05-30)
+
+*  Add @hardliner66 as a contributor ([1ca998e](https://github.com/sorenisanerd/gotty/commit/1ca998e))
+*  Add @jkandasa as a contributor ([cd23910](https://github.com/sorenisanerd/gotty/commit/cd23910))
+* Add backend tests ([603c650](https://github.com/sorenisanerd/gotty/commit/603c650))
+* Add generated data to git ([a9fbc07](https://github.com/sorenisanerd/gotty/commit/a9fbc07))
+* add quiet flag to disable logging ([4109b11](https://github.com/sorenisanerd/gotty/commit/4109b11))
+* Add references to @yudai ([bffd821](https://github.com/sorenisanerd/gotty/commit/bffd821)), closes [#8](https://github.com/sorenisanerd/gotty/issues/8)
+* Add rule to build gotty.js.map ([82c3acf](https://github.com/sorenisanerd/gotty/commit/82c3acf))
+* Apply font size and family in xterm ([f157dbe](https://github.com/sorenisanerd/gotty/commit/f157dbe)), closes [#21](https://github.com/sorenisanerd/gotty/issues/21)
+* Avoid HTTP 401 error on manifest.json due to CORS ([817b5c8](https://github.com/sorenisanerd/gotty/commit/817b5c8))
+* Bump browserslist from 4.16.4 to 4.16.6 in /js ([8deba62](https://github.com/sorenisanerd/gotty/commit/8deba62))
+* Disable arg passing by default ([5c8eb10](https://github.com/sorenisanerd/gotty/commit/5c8eb10)), closes [#17](https://github.com/sorenisanerd/gotty/issues/17)
+* Do not include ALL of bootstrap ([b63ea16](https://github.com/sorenisanerd/gotty/commit/b63ea16))
+* Ensure defaults for booleans is set correctly ([28f8e61](https://github.com/sorenisanerd/gotty/commit/28f8e61)), closes [#16](https://github.com/sorenisanerd/gotty/issues/16)
+* Fix existing tests ([d674aa1](https://github.com/sorenisanerd/gotty/commit/d674aa1)), closes [#13](https://github.com/sorenisanerd/gotty/issues/13)
+* Fix warnings from Markdown linter ([aa86a34](https://github.com/sorenisanerd/gotty/commit/aa86a34))
+* go fmt ([dcb153c](https://github.com/sorenisanerd/gotty/commit/dcb153c))
+* Improve webtty test coverage ([f61763f](https://github.com/sorenisanerd/gotty/commit/f61763f))
+* Make client request base64 encoding ([dd3603c](https://github.com/sorenisanerd/gotty/commit/dd3603c))
+* Make sure we read the full message ([1eed97f](https://github.com/sorenisanerd/gotty/commit/1eed97f))
+* Publish artifacts on push to master ([6c62ab7](https://github.com/sorenisanerd/gotty/commit/6c62ab7))
+* Remove hterm ([163fd05](https://github.com/sorenisanerd/gotty/commit/163fd05))
+* Run tests on push ([55674f1](https://github.com/sorenisanerd/gotty/commit/55674f1))
+* Run tests on push to all branches ([679a324](https://github.com/sorenisanerd/gotty/commit/679a324))
+* update go version in Dockerfile ([fd2fb99](https://github.com/sorenisanerd/gotty/commit/fd2fb99))
+* Update js dependencies ([26fc412](https://github.com/sorenisanerd/gotty/commit/26fc412))
+* Update xterm.js and other js libs ([81afdc7](https://github.com/sorenisanerd/gotty/commit/81afdc7)), closes [#18](https://github.com/sorenisanerd/gotty/issues/18)
+* Use bootstrap components for up- and downloads ([7f05f2f](https://github.com/sorenisanerd/gotty/commit/7f05f2f))
+* Use Go's built-in embed mechanism ([f66f0d0](https://github.com/sorenisanerd/gotty/commit/f66f0d0)), closes [#7](https://github.com/sorenisanerd/gotty/issues/7)
+* feat(zmodem): Allow file uploads/downloads ([782991c](https://github.com/sorenisanerd/gotty/commit/782991c))
+
+
+
+## v1.3.0
+
+* Links in the tty are now clickable.
+* Use WebGL for rendering by default.
+* Ensure authentication (TLS or Basic auth) remain enabled even if some of the options are only given in config files Thanks, @devanlai!
+* Fix typo in README.md Thanks, @prusnak!
+* Add arm64/Linux build. Thanks for the suggestion, @nephaste!
+
+## v1.2.0
+
+* Pass BUILD\_OPTIONS to gox, too, so release artifacts have version info included.
+* Update xterm.js 2.7.0 => 4.11.0
+* Lots of clean up.
+
+## v1.1.0
+
+* Today I learned about Go's handling of versions, so re-releasing 2.1.0 as 1.1.0.
+* Added path option. Thanks, @apatil!
+
+## v2.1.0 (whoops)
+
+* Use Go modules and update cli module import path. Thanks, @svanellewee!
+* Fix typos. Thanks, @0xflotus, @RealCyGuy, @ygit, @Jason-Cooke and @fredster33!
+* Fix printing of ipv6 addresses. Thanks, @Felixoid!
+* Add Progressive Web App support. Thanks, @sehaas!
+* Add instructions for GNU screen. Thanks, @Immortalin!
+* Add Solaris support. Thanks, @fazalmajid!
+* New maintainer: @sorenisanerd
--- a/README.md
+++ b/README.md
@ -0,0 +1,277 @@
+# ![](https://raw.githubusercontent.com/sorenisanerd/gotty/master/resources/favicon.ico) GoTTY - Share your terminal as a web application
+<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+[![All Contributors](https://img.shields.io/badge/all_contributors-57-orange.svg?style=flat-square)](#contributors-)
+<!-- ALL-CONTRIBUTORS-BADGE:END -->
+
+[![GitHub release](http://img.shields.io/github/release/sorenisanerd/gotty.svg?style=flat-square)][release]
+[![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat-square)][license]
+[![Maintainer streaming](https://twitch-status.soren.tools/sorencodes)][twitch]
+
+[release]: https://github.com/sorenisanerd/gotty/releases
+[license]: https://github.com/sorenisanerd/gotty/blob/master/LICENSE
+[twitch]: https://twitch.tv/sorencodes
+
+GoTTY is a simple command line tool that turns your CLI tools into web applications.
+
+[Original work](https://github.com/yudai/gotty) by [Iwasaki Yudai](https://github.com/yudai). There would be no GoTTY without him. ❤️
+
+![Screenshot](https://raw.githubusercontent.com/sorenisanerd/gotty/master/screenshot.gif)
+
+# Installation
+
+## From release page
+
+You can download the latest stable binary file from the [Releases](https://github.com/sorenisanerd/gotty/releases) page. Note that the release marked `Pre-release` is built for testing purpose, which can include unstable or breaking changes. Download a release marked [Latest release](https://github.com/sorenisanerd/gotty/releases/latest) for a stable build.
+
+(Files named with `darwin_amd64` are for Mac OS X users)
+
+## Homebrew Installation
+
+You can install GoTTY with [Homebrew](http://brew.sh/) as well.
+
+```sh
+$ brew install sorenisanerd/gotty/gotty
+```
+
+## `go get` Installation (Development)
+
+If you have a Go language environment, you can install GoTTY with the `go get` command. However, this command builds a binary file from the latest master branch, which can include unstable or breaking changes. GoTTY requires go1.9 or later.
+
+```sh
+$ go get github.com/sorenisanerd/gotty
+```
+
+# Usage
+
+```
+Usage: gotty [options] <command> [<arguments...>]
+```
+
+Run `gotty` with your preferred command as its arguments (e.g. `gotty top`).
+
+By default, GoTTY starts a web server at port 8080. Open the URL on your web browser and you can see the running command as if it were running on your terminal.
+
+## Options
+```sh
+   --address value, -a value     IP address to listen (default: "0.0.0.0") [$GOTTY_ADDRESS]
+   --port value, -p value        Port number to liten (default: "8080") [$GOTTY_PORT]
+   --path value, -m value        Base path (default: "/") [$GOTTY_PATH]
+   --permit-write, -w            Permit clients to write to the TTY (BE CAREFUL) (default: false) [$GOTTY_PERMIT_WRITE]
+   --credential value, -c value  Credential for Basic Authentication (ex: user:pass, default disabled) [$GOTTY_CREDENTIAL]
+   --random-url, -r              Add a random string to the URL (default: false) [$GOTTY_RANDOM_URL]
+   --random-url-length value     Random URL length (default: 8) [$GOTTY_RANDOM_URL_LENGTH]
+   --tls, -t                     Enable TLS/SSL (default: false) [$GOTTY_TLS]
+   --tls-crt value               TLS/SSL certificate file path (default: "~/.gotty.crt") [$GOTTY_TLS_CRT]
+   --tls-key value               TLS/SSL key file path (default: "~/.gotty.key") [$GOTTY_TLS_KEY]
+   --tls-ca-crt value            TLS/SSL CA certificate file for client certifications (default: "~/.gotty.ca.crt") [$GOTTY_TLS_CA_CRT]
+   --index value                 Custom index.html file [$GOTTY_INDEX]
+   --title-format value          Title format of browser window (default: "{{ .command }}@{{ .hostname }}") [$GOTTY_TITLE_FORMAT]
+   --reconnect                   Enable reconnection (default: false) [$GOTTY_RECONNECT]
+   --reconnect-time value        Time to reconnect (default: 10) [$GOTTY_RECONNECT_TIME]
+   --max-connection value        Maximum connection to gotty (default: 0) [$GOTTY_MAX_CONNECTION]
+   --once                        Accept only one client and exit on disconnection (default: false) [$GOTTY_ONCE]
+   --timeout value               Timeout seconds for waiting a client(0 to disable) (default: 0) [$GOTTY_TIMEOUT]
+   --permit-arguments            Permit clients to send command line arguments in URL (e.g. http://example.com:8080/?arg=AAA&arg=BBB) (default: false) [$GOTTY_PERMIT_ARGUMENTS]
+   --width value                 Static width of the screen, 0(default) means dynamically resize (default: 0) [$GOTTY_WIDTH]
+   --height value                Static height of the screen, 0(default) means dynamically resize (default: 0) [$GOTTY_HEIGHT]
+   --ws-origin value             A regular expression that matches origin URLs to be accepted by WebSocket. No cross origin requests are acceptable by default [$GOTTY_WS_ORIGIN]
+   --ws-query-args value         Querystring arguments to append to the websocket instantiation [$GOTTY_WS_QUERY_ARGS]
+   --enable-webgl                Enable WebGL renderer (default: true) [$GOTTY_ENABLE_WEBGL]
+   --close-signal value          Signal sent to the command process when gotty close it (default: SIGHUP) (default: 1) [$GOTTY_CLOSE_SIGNAL]
+   --close-timeout value         Time in seconds to force kill process after client is disconnected (default: -1) (default: -1) [$GOTTY_CLOSE_TIMEOUT]
+   --config value                Config file path (default: "~/.gotty") [$GOTTY_CONFIG]
+   --help, -h                    show help (default: false)
+   --version, -v                 print the version (default: false)
+```
+### Config File
+You can customize default options and your terminal by providing a config file to the `gotty` command. GoTTY loads a profile file at `~/.gotty` by default when it exists.
+
+```
+// Listen at port 9000 by default
+port = "9000"
+
+// Enable TSL/SSL by default
+enable_tls = true
+
+```
+
+See the [`.gotty`](https://github.com/sorenisanerd/gotty/blob/master/.gotty) file in this repository for the list of configuration options.
+
+### Security Options
+
+By default, GoTTY doesn't allow clients to send any keystrokes or commands except terminal window resizing. When you want to permit clients to write input to the TTY, add the `-w` option. However, accepting input from remote clients is dangerous for most commands. When you need interaction with the TTY for some reasons, consider starting GoTTY with tmux or GNU Screen and run your command on it (see "Sharing with Multiple Clients" section for detail).
+
+To restrict client access, you can use the `-c` option to enable the basic authentication. With this option, clients need to input the specified username and password to connect to the GoTTY server. Note that the credentials will be transmitted between the server and clients in plain text. For more strict authentication, consider the SSL/TLS client certificate authentication described below.
+
+The `-r` option is a little bit more casual way to restrict access. With this option, GoTTY generates a random URL so that only people who know the URL can get access to the server.
+
+All traffic between the server and clients are NOT encrypted by default. When you send secret information through GoTTY, we strongly recommend you use the `-t` option which enables TLS/SSL on the session. By default, GoTTY loads the crt and key files placed at `~/.gotty.crt` and `~/.gotty.key`. You can overwrite these file paths with the `--tls-crt` and `--tls-key` options. When you need to generate a self-signed certification file, you can use the `openssl` command.
+
+```sh
+openssl req -x509 -nodes -days 9999 -newkey rsa:2048 -keyout ~/.gotty.key -out ~/.gotty.crt
+```
+
+(NOTE: For Safari uses, see [how to enable self-signed certificates for WebSockets](http://blog.marcon.me/post/24874118286/secure-websockets-safari) when use self-signed certificates)
+
+For additional security, you can use the SSL/TLS client certificate authentication by providing a CA certificate file to the `--tls-ca-crt` option (this option requires the `-t` or `--tls` to be set). This option requires all clients to send valid client certificates that are signed by the specified certification authority.
+
+## Sharing with Multiple Clients
+
+GoTTY starts a new process with the given command when a new client connects to the server. This means users cannot share a single terminal with others by default. However, you can use terminal multiplexers for sharing a single process with multiple clients.
+### Screen
+After installing GNU screen, start a new session with `screen -S name-for-session` and connect to it with gotty in another terminal window/tab through `screen -x name-for-session`. All commands and activities being done in the first terminal tab/window will now be broadcasted by gotty.
+### Tmux
+For example, you can start a new tmux session named `gotty` with `top` command by the command below.
+
+```sh
+$ gotty tmux new -A -s gotty top
+```
+
+This command doesn't allow clients to send keystrokes, however, you can attach the session from your local terminal and run operations like switching the mode of the `top` command. To connect to the tmux session from your terminal, you can use following command.
+
+```sh
+$ tmux new -A -s gotty
+```
+
+By using terminal multiplexers, you can have the control of your terminal and allow clients to just see your screen.
+
+### Quick Sharing on tmux
+
+To share your current session with others by a shortcut key, you can add a line like below to your `.tmux.conf`.
+
+```
+# Start GoTTY in a new window with C-t
+bind-key C-t new-window "gotty tmux attach -t `tmux display -p '#S'`"
+```
+
+## Playing with Docker
+
+When you want to create a jailed environment for each client, you can use Docker containers like following:
+
+```sh
+$ gotty -w docker run -it --rm busybox
+```
+
+## Development
+
+You can build a binary by simply running `make`. go1.16 is required.
+
+To build the frontend part (JS files and other static files), you need `npm`.
+
+## Architecture
+
+GoTTY uses [xterm.js](https://xtermjs.org/) to run a JavaScript based terminal on web browsers. GoTTY itself provides a websocket server that simply relays output from the TTY to clients and receives input from clients and forwards it to the TTY. This xterm + websocket idea is inspired by [Wetty](https://github.com/krishnasrinivas/wetty).
+
+## Alternatives
+
+### Command line client
+
+* [gotty-client](https://github.com/moul/gotty-client): If you want to connect to GoTTY server from your terminal
+
+### Terminal/SSH on Web Browsers
+
+* [Secure Shell (Chrome App)](https://chrome.google.com/webstore/detail/secure-shell/pnhechapfaindjhompbnflcldabbghjo): If you are a chrome user and need a "real" SSH client on your web browser, perhaps the Secure Shell app is what you want
+* [Wetty](https://github.com/krishnasrinivas/wetty): Node based web terminal (SSH/login)
+* [ttyd](https://tsl0922.github.io/ttyd): C port of GoTTY with CJK and IME support
+
+### Terminal Sharing
+
+* [tmate](http://tmate.io/): Forked-Tmux based Terminal-Terminal sharing
+* [termshare](https://termsha.re): Terminal-Terminal sharing through a HTTP server
+* [tmux](https://tmux.github.io/): Tmux itself also supports TTY sharing through SSH)
+
+# License
+
+The MIT License
+
+# Contributors
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tr>
+    <td align="center"><a href="https://yudai.arielworks.com/"><img src="https://avatars.githubusercontent.com/u/33192?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Iwasaki Yudai</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=yudai" title="Code">💻</a></td>
+    <td align="center"><a href="http://linux2go.dk/"><img src="https://avatars.githubusercontent.com/u/160090?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Soren L. Hansen</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Asorenisanerd" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/uovobw"><img src="https://avatars.githubusercontent.com/u/1194751?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Andrea Lusuardi</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=uovobw" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/moul"><img src="https://avatars.githubusercontent.com/u/94029?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Manfred Touron</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=moul" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/svanellewee"><img src="https://avatars.githubusercontent.com/u/1567439?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stephan</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=svanellewee" title="Code">💻</a></td>
+    <td align="center"><a href="https://fr.linkedin.com/in/quentinperez"><img src="https://avatars.githubusercontent.com/u/3081204?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Quentin Perez</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=QuentinPerez" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/jizhilong"><img src="https://avatars.githubusercontent.com/u/816618?v=4?s=100" width="100px;" alt=""/><br /><sub><b>jzl</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=jizhilong" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://majid.info/"><img src="https://avatars.githubusercontent.com/u/331198?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Fazal Majid</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=fazalmajid" title="Code">💻</a></td>
+    <td align="center"><a href="https://narrationbox.com/"><img src="https://avatars.githubusercontent.com/u/7126128?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Immortalin</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=Immortalin" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/freakhill"><img src="https://avatars.githubusercontent.com/u/916582?v=4?s=100" width="100px;" alt=""/><br /><sub><b>freakhill</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=freakhill" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/0xflotus"><img src="https://avatars.githubusercontent.com/u/26602940?v=4?s=100" width="100px;" alt=""/><br /><sub><b>0xflotus</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=0xflotus" title="Code">💻</a></td>
+    <td align="center"><a href="https://andy.blog/"><img src="https://avatars.githubusercontent.com/u/52292?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Andy Skelton</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=skeltoac" title="Code">💻</a></td>
+    <td align="center"><a href="https://twitter.com/artdevjs"><img src="https://avatars.githubusercontent.com/u/7567983?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Artem Medvedev</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=artdevjs" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/blakejennings"><img src="https://avatars.githubusercontent.com/u/1976331?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Blake Jennings</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=blakejennings" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/jensenbox"><img src="https://avatars.githubusercontent.com/u/189265?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christian Jensen</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=jensenbox" title="Code">💻</a></td>
+    <td align="center"><a href="https://wilk.tech/"><img src="https://avatars.githubusercontent.com/u/9367803?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Christopher Wilkinson</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=TechWilk" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/RealCyGuy"><img src="https://avatars.githubusercontent.com/u/54488650?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Cyrus</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=RealCyGuy" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/dehorsley"><img src="https://avatars.githubusercontent.com/u/3401668?v=4?s=100" width="100px;" alt=""/><br /><sub><b>David Horsley</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=dehorsley" title="Code">💻</a></td>
+    <td align="center"><a href="https://jasoncooke.dev/"><img src="https://avatars.githubusercontent.com/u/5185660?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jason Cooke</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=Jason-Cooke" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/DenKoren"><img src="https://avatars.githubusercontent.com/u/3419381?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Denis Korenevskiy</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=DenKoren" title="Code">💻</a></td>
+    <td align="center"><a href="https://www.stucchi.ch/"><img src="https://avatars.githubusercontent.com/u/1331438?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Massimiliano Stucchi</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=stucchimax" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://www.linkedin.com/in/felixoid/"><img src="https://avatars.githubusercontent.com/u/3025537?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Mikhail f. Shiryaev</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=Felixoid" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/guywithnose"><img src="https://avatars.githubusercontent.com/u/1059169?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Robert Bittle</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=guywithnose" title="Code">💻</a></td>
+    <td align="center"><a href="https://deebas.com/"><img src="https://avatars.githubusercontent.com/u/283482?v=4?s=100" width="100px;" alt=""/><br /><sub><b>sebastian haas</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=sehaas" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/shoz"><img src="https://avatars.githubusercontent.com/u/225194?v=4?s=100" width="100px;" alt=""/><br /><sub><b>shoji</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=shoz" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/tsl0922"><img src="https://avatars.githubusercontent.com/u/1680515?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Shuanglei Tao</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=tsl0922" title="Code">💻</a></td>
+    <td align="center"><a href="https://gitter.im/"><img src="https://avatars.githubusercontent.com/u/8518239?v=4?s=100" width="100px;" alt=""/><br /><sub><b>The Gitter Badger</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=gitter-badger" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/xinsnake"><img src="https://avatars.githubusercontent.com/u/1287677?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jacob Zhou</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=xinsnake" title="Code">💻</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/zyfdegh"><img src="https://avatars.githubusercontent.com/u/7880217?v=4?s=100" width="100px;" alt=""/><br /><sub><b>zyfdegh</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=zyfdegh" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/fredster33"><img src="https://avatars.githubusercontent.com/u/64927044?v=4?s=100" width="100px;" alt=""/><br /><sub><b>fredster33</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=fredster33" title="Code">💻</a></td>
+    <td align="center"><a href="https://mattn.kaoriya.net/"><img src="https://avatars.githubusercontent.com/u/10111?v=4?s=100" width="100px;" alt=""/><br /><sub><b>mattn</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=mattn" title="Code">💻</a></td>
+    <td align="center"><a href="https://www.shingt.com/"><img src="https://avatars.githubusercontent.com/u/1391330?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Shinichi Goto</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=shingt" title="Code">💻</a></td>
+    <td align="center"><a href="https://twitter.com/_yogeshsingh"><img src="https://avatars.githubusercontent.com/u/8512357?v=4?s=100" width="100px;" alt=""/><br /><sub><b>ygit</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=ygit" title="Code">💻</a></td>
+    <td align="center"><a href="http://forum.cachem.fr/viewforum.php?f=21"><img src="https://avatars.githubusercontent.com/u/3392684?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Stéphane</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Anephaste" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://rusnak.io/"><img src="https://avatars.githubusercontent.com/u/42201?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Pavol Rusnak</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Aprusnak" title="Bug reports">🐛</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/devanlai"><img src="https://avatars.githubusercontent.com/u/1348448?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Devan Lai</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=devanlai" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/jkandasa"><img src="https://avatars.githubusercontent.com/u/1004403?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jeeva Kandasamy</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=jkandasa" title="Code">💻</a></td>
+    <td align="center"><a href="https://twitch.tv/iamhardliner"><img src="https://avatars.githubusercontent.com/u/2937272?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Steve Biedermann</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/commits?author=hardliner66" title="Code">💻</a></td>
+    <td align="center"><a href="https://github.com/xgdgsc"><img src="https://avatars.githubusercontent.com/u/1189869?v=4?s=100" width="100px;" alt=""/><br /><sub><b>xgdgsc</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Axgdgsc" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/flechaig"><img src="https://avatars.githubusercontent.com/u/10887132?v=4?s=100" width="100px;" alt=""/><br /><sub><b>flechaig</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Aflechaig" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/Fan-SJ"><img src="https://avatars.githubusercontent.com/u/49977708?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Fan-SJ</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3AFan-SJ" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/dmartin"><img src="https://avatars.githubusercontent.com/u/1657652?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Dustin Martin</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Admartin" title="Bug reports">🐛</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://ahmet.dev/"><img src="https://avatars.githubusercontent.com/u/159209?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ahmet Alp Balkan</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Aahmetb" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/CoconutMacaroon"><img src="https://avatars.githubusercontent.com/u/45187468?v=4?s=100" width="100px;" alt=""/><br /><sub><b>CoconutMacaroon</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3ACoconutMacaroon" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.dannyben.com/"><img src="https://avatars.githubusercontent.com/u/2405099?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Danny Ben Shitrit</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3ADannyBen" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/George-NG"><img src="https://avatars.githubusercontent.com/u/28577165?v=4?s=100" width="100px;" alt=""/><br /><sub><b>George-NG</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3AGeorge-NG" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/ghthor"><img src="https://avatars.githubusercontent.com/u/160298?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Will Owens</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Aghthor" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://jpillora.com/"><img src="https://avatars.githubusercontent.com/u/633843?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Jaime Pillora</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Ajpillora" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/kaisawind"><img src="https://avatars.githubusercontent.com/u/4010613?v=4?s=100" width="100px;" alt=""/><br /><sub><b>kaisawind</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Akaisawind" title="Bug reports">🐛</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/linyinli"><img src="https://avatars.githubusercontent.com/u/42955482?v=4?s=100" width="100px;" alt=""/><br /><sub><b>linyinli</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Alinyinli" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/LucaMarconato"><img src="https://avatars.githubusercontent.com/u/2664412?v=4?s=100" width="100px;" alt=""/><br /><sub><b>LucaMarconato</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3ALucaMarconato" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://audiobox.fm/"><img src="https://avatars.githubusercontent.com/u/12844?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Kain</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Amasterkain" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="http://duro.me/"><img src="https://avatars.githubusercontent.com/u/1498061?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Andi Andreas</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3ANexuist" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/qigj"><img src="https://avatars.githubusercontent.com/u/56585735?v=4?s=100" width="100px;" alt=""/><br /><sub><b>qigj</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Aqigj" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/shuaiyy"><img src="https://avatars.githubusercontent.com/u/19821321?v=4?s=100" width="100px;" alt=""/><br /><sub><b>shuaiyy</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Ashuaiyy" title="Bug reports">🐛</a></td>
+    <td align="center"><a href="https://github.com/v20z"><img src="https://avatars.githubusercontent.com/u/2884824?v=4?s=100" width="100px;" alt=""/><br /><sub><b>v20z</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3Av20z" title="Bug reports">🐛</a></td>
+  </tr>
+  <tr>
+    <td align="center"><a href="https://github.com/Yann-Qiu"><img src="https://avatars.githubusercontent.com/u/56961747?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Yanfeng Qiu</b></sub></a><br /><a href="https://github.com/sorenisanerd/gotty/issues?q=author%3AYann-Qiu" title="Bug reports">🐛</a></td>
+  </tr>
+</table>
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!
--- a/README.md.sed
+++ b/README.md.sed
@ -0,0 +1,6 @@
+/^## Options/,/^### Config File/ {
+    /^\(`\|#\)/!d           # Delete any line not beginning with ` or #
+    /```sh/ {               # Shove options.txt.tmp in after ```sh
+        r options.txt.tmp
+    }
+}
--- a/backend/doc.go
+++ b/backend/doc.go
@ -0,0 +1 @@
+package backend
--- a/backend/localcommand/doc.go
+++ b/backend/localcommand/doc.go
@ -0,0 +1,3 @@
+// Package localcommand provides an implementation of webtty.Slave
+// that launches a local command with a PTY.
+package localcommand
--- a/backend/localcommand/factory.go
+++ b/backend/localcommand/factory.go
@ -0,0 +1,48 @@
+package localcommand
+
+import (
+	"syscall"
+	"time"
+
+	"github.com/sorenisanerd/gotty/server"
+)
+
+type Options struct {
+	CloseSignal  int `hcl:"close_signal" flagName:"close-signal" flagSName:"" flagDescribe:"Signal sent to the command process when gotty close it (default: SIGHUP)" default:"1"`
+	CloseTimeout int `hcl:"close_timeout" flagName:"close-timeout" flagSName:"" flagDescribe:"Time in seconds to force kill process after client is disconnected (default: -1)" default:"-1"`
+}
+
+type Factory struct {
+	command string
+	argv    []string
+	options *Options
+	opts    []Option
+}
+
+func NewFactory(command string, argv []string, options *Options) (*Factory, error) {
+	opts := []Option{WithCloseSignal(syscall.Signal(options.CloseSignal))}
+	if options.CloseTimeout >= 0 {
+		opts = append(opts, WithCloseTimeout(time.Duration(options.CloseTimeout)*time.Second))
+	}
+
+	return &Factory{
+		command: command,
+		argv:    argv,
+		options: options,
+		opts:    opts,
+	}, nil
+}
+
+func (factory *Factory) Name() string {
+	return "local command"
+}
+
+func (factory *Factory) New(params map[string][]string, headers map[string][]string) (server.Slave, error) {
+	argv := make([]string, len(factory.argv))
+	copy(argv, factory.argv)
+	if params["arg"] != nil && len(params["arg"]) > 0 {
+		argv = append(argv, params["arg"]...)
+	}
+
+	return New(factory.command, argv, headers, factory.opts...)
+}
--- a/backend/localcommand/local_command.go
+++ b/backend/localcommand/local_command.go
@ -0,0 +1,135 @@
+package localcommand
+
+import (
+	"os"
+	"os/exec"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/creack/pty"
+	"github.com/pkg/errors"
+)
+
+const (
+	DefaultCloseSignal  = syscall.SIGINT
+	DefaultCloseTimeout = 10 * time.Second
+)
+
+type LocalCommand struct {
+	command string
+	argv    []string
+
+	closeSignal  syscall.Signal
+	closeTimeout time.Duration
+
+	cmd       *exec.Cmd
+	pty       *os.File
+	ptyClosed chan struct{}
+}
+
+func New(command string, argv []string, headers map[string][]string, options ...Option) (*LocalCommand, error) {
+	cmd := exec.Command(command, argv...)
+
+	cmd.Env = append(os.Environ(), "TERM=xterm-256color")
+
+	// Combine headers into key=value pairs to set as env vars
+	// Prefix the headers with "http_" so we don't overwrite any other env vars
+	// which potentially has the same name and to bring these closer to what
+	// a (F)CGI server would proxy to a backend service
+	// Replace hyphen with underscore and make them all upper case
+	for key, values := range headers {
+		h := "HTTP_" + strings.Replace(strings.ToUpper(key), "-", "_", -1) + "=" + strings.Join(values, ",")
+		// log.Printf("Adding header: %s", h)
+		cmd.Env = append(cmd.Env, h)
+	}
+
+	pty, err := pty.Start(cmd)
+	if err != nil {
+		// todo close cmd?
+		return nil, errors.Wrapf(err, "failed to start command `%s`", command)
+	}
+	ptyClosed := make(chan struct{})
+
+	lcmd := &LocalCommand{
+		command: command,
+		argv:    argv,
+
+		closeSignal:  DefaultCloseSignal,
+		closeTimeout: DefaultCloseTimeout,
+
+		cmd:       cmd,
+		pty:       pty,
+		ptyClosed: ptyClosed,
+	}
+
+	for _, option := range options {
+		option(lcmd)
+	}
+
+	// When the process is closed by the user,
+	// close pty so that Read() on the pty breaks with an EOF.
+	go func() {
+		defer func() {
+			lcmd.pty.Close()
+			close(lcmd.ptyClosed)
+		}()
+
+		lcmd.cmd.Wait()
+	}()
+
+	return lcmd, nil
+}
+
+func (lcmd *LocalCommand) Read(p []byte) (n int, err error) {
+	return lcmd.pty.Read(p)
+}
+
+func (lcmd *LocalCommand) Write(p []byte) (n int, err error) {
+	return lcmd.pty.Write(p)
+}
+
+func (lcmd *LocalCommand) Close() error {
+	if lcmd.cmd != nil && lcmd.cmd.Process != nil {
+		lcmd.cmd.Process.Signal(lcmd.closeSignal)
+	}
+	for {
+		select {
+		case <-lcmd.ptyClosed:
+			return nil
+		case <-lcmd.closeTimeoutC():
+			lcmd.cmd.Process.Signal(syscall.SIGKILL)
+		}
+	}
+}
+
+func (lcmd *LocalCommand) WindowTitleVariables() map[string]interface{} {
+	return map[string]interface{}{
+		"command": lcmd.command,
+		"argv":    lcmd.argv,
+		"pid":     lcmd.cmd.Process.Pid,
+	}
+}
+
+func (lcmd *LocalCommand) ResizeTerminal(width int, height int) error {
+	window := pty.Winsize{
+		Rows: uint16(height),
+		Cols: uint16(width),
+		X:    0,
+		Y:    0,
+	}
+	err := pty.Setsize(lcmd.pty, &window)
+	if err != nil {
+		return err
+	} else {
+		return nil
+	}
+}
+
+func (lcmd *LocalCommand) closeTimeoutC() <-chan time.Time {
+	if lcmd.closeTimeout >= 0 {
+		return time.After(lcmd.closeTimeout)
+	}
+
+	return make(chan time.Time)
+}
--- a/backend/localcommand/local_command_test.go
+++ b/backend/localcommand/local_command_test.go
@ -0,0 +1,88 @@
+package localcommand
+
+import (
+	"bytes"
+	"reflect"
+	"testing"
+	"time"
+)
+
+func TestNewFactory(t *testing.T) {
+	factory, err := NewFactory("/bin/false", []string{}, &Options{CloseSignal: 123, CloseTimeout: 321})
+	if err != nil {
+		t.Errorf("NewFactory() returned error")
+		return
+	}
+	if factory.command != "/bin/false" {
+		t.Errorf("factory.command = %v, expected %v", factory.command, "/bin/false")
+	}
+	if !reflect.DeepEqual(factory.argv, []string{}) {
+		t.Errorf("factory.argv = %v, expected %v", factory.argv, []string{})
+	}
+	if !reflect.DeepEqual(factory.options, &Options{CloseSignal: 123, CloseTimeout: 321}) {
+		t.Errorf("factory.options = %v, expected %v", factory.options, &Options{})
+	}
+
+	slave, _ := factory.New(nil, nil)
+	lcmd := slave.(*LocalCommand)
+	if lcmd.closeSignal != 123 {
+		t.Errorf("lcmd.closeSignal = %v, expected %v", lcmd.closeSignal, 123)
+	}
+	if lcmd.closeTimeout != time.Second*321 {
+		t.Errorf("lcmd.closeTimeout = %v, expected %v", lcmd.closeTimeout, time.Second*321)
+	}
+}
+
+func TestFactoryNew(t *testing.T) {
+	factory, err := NewFactory("/bin/cat", []string{}, &Options{})
+	if err != nil {
+		t.Errorf("NewFactory() returned error")
+		return
+	}
+
+	slave, err := factory.New(nil, nil)
+	if err != nil {
+		t.Errorf("factory.New() returned error")
+		return
+	}
+
+	writeBuf := []byte("foobar\n")
+	n, err := slave.Write(writeBuf)
+	if err != nil {
+		t.Errorf("write() failed: %v", err)
+		return
+	}
+	if n != 7 {
+		t.Errorf("Unexpected write length. n = %d, expected n = %d", n, 7)
+		return
+	}
+
+	// Local echo is on, so we get the output twice:
+	// Once because we're "typing" it, and once more
+	// repeated back to us by `cat`. Also, \r\n
+	// because we're a terminal.
+	expectedBuf := []byte("foobar\r\nfoobar\r\n")
+	readBuf := make([]byte, 1024)
+	var totalRead int
+	for totalRead < 16 {
+		n, err = slave.Read(readBuf[totalRead:])
+		if err != nil {
+			t.Errorf("read() failed: %v", err)
+			return
+		}
+		totalRead += n
+	}
+	if totalRead != 16 {
+		t.Errorf("Unexpected read length. totalRead = %d, expected totalRead = %d", totalRead, 16)
+		return
+	}
+	if !bytes.Equal(readBuf[:totalRead], expectedBuf) {
+		t.Errorf("unexpected output from slave: got %v, expected %v", readBuf[:totalRead], expectedBuf)
+	}
+	err = slave.Close()
+	if err != nil {
+		t.Errorf("close() failed: %v", err)
+		return
+	}
+
+}
--- a/backend/localcommand/options.go
+++ b/backend/localcommand/options.go
@ -0,0 +1,20 @@
+package localcommand
+
+import (
+	"syscall"
+	"time"
+)
+
+type Option func(*LocalCommand)
+
+func WithCloseSignal(signal syscall.Signal) Option {
+	return func(lcmd *LocalCommand) {
+		lcmd.closeSignal = signal
+	}
+}
+
+func WithCloseTimeout(timeout time.Duration) Option {
+	return func(lcmd *LocalCommand) {
+		lcmd.closeTimeout = timeout
+	}
+}
--- a/bindata/bindata.go
+++ b/bindata/bindata.go
@ -0,0 +1,8 @@
+//go:build !dev
+
+package bindata
+
+import "embed"
+
+//go:embed static/*
+var Fs embed.FS
--- a/bindata/bindata_dev.go
+++ b/bindata/bindata_dev.go
@ -0,0 +1,28 @@
+//go:build dev
+
+package bindata
+
+import (
+	"io"
+	"io/fs"
+	"os"
+)
+
+type GottyFS struct {
+	fs.FS
+}
+
+var Fs GottyFS
+
+func (gfs *GottyFS) ReadFile(name string) ([]byte, error) {
+	fp, err := gfs.Open(name)
+	if err != nil {
+		return nil, err
+	}
+
+	return io.ReadAll(fp)
+}
+
+func init() {
+	Fs = GottyFS{os.DirFS("bindata")}
+}
--- a/bindata/static/css/index.css
+++ b/bindata/static/css/index.css
@ -0,0 +1,13 @@
+html, body, #terminal {
+    background: black;
+    height: 100%;
+    width: 100%;
+    padding: 0%;
+    margin: 0%;
+}
+
+.progress .progress-bar {
+  transition: unset;
+  transition-duration: 0.1s;
+  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
+}
--- a/bindata/static/css/xterm.css
+++ b/bindata/static/css/xterm.css
@ -0,0 +1,209 @@
+/**
+ * Copyright (c) 2014 The xterm.js authors. All rights reserved.
+ * Copyright (c) 2012-2013, Christopher Jeffrey (MIT License)
+ * https://github.com/chjj/term.js
+ * @license MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * Originally forked from (with the author's permission):
+ *   Fabrice Bellard's javascript vt100 for jslinux:
+ *   http://bellard.org/jslinux/
+ *   Copyright (c) 2011 Fabrice Bellard
+ *   The original design remains. The terminal itself
+ *   has been extended to include xterm CSI codes, among
+ *   other features.
+ */
+
+/**
+ *  Default styles for xterm.js
+ */
+
+.xterm {
+    cursor: text;
+    position: relative;
+    user-select: none;
+    -ms-user-select: none;
+    -webkit-user-select: none;
+}
+
+.xterm.focus,
+.xterm:focus {
+    outline: none;
+}
+
+.xterm .xterm-helpers {
+    position: absolute;
+    top: 0;
+    /**
+     * The z-index of the helpers must be higher than the canvases in order for
+     * IMEs to appear on top.
+     */
+    z-index: 5;
+}
+
+.xterm .xterm-helper-textarea {
+    padding: 0;
+    border: 0;
+    margin: 0;
+    /* Move textarea out of the screen to the far left, so that the cursor is not visible */
+    position: absolute;
+    opacity: 0;
+    left: -9999em;
+    top: 0;
+    width: 0;
+    height: 0;
+    z-index: -5;
+    /** Prevent wrapping so the IME appears against the textarea at the correct position */
+    white-space: nowrap;
+    overflow: hidden;
+    resize: none;
+}
+
+.xterm .composition-view {
+    /* TODO: Composition position got messed up somewhere */
+    background: #000;
+    color: #FFF;
+    display: none;
+    position: absolute;
+    white-space: nowrap;
+    z-index: 1;
+}
+
+.xterm .composition-view.active {
+    display: block;
+}
+
+.xterm .xterm-viewport {
+    /* On OS X this is required in order for the scroll bar to appear fully opaque */
+    background-color: #000;
+    overflow-y: scroll;
+    cursor: default;
+    position: absolute;
+    right: 0;
+    left: 0;
+    top: 0;
+    bottom: 0;
+}
+
+.xterm .xterm-screen {
+    position: relative;
+}
+
+.xterm .xterm-screen canvas {
+    position: absolute;
+    left: 0;
+    top: 0;
+}
+
+.xterm .xterm-scroll-area {
+    visibility: hidden;
+}
+
+.xterm-char-measure-element {
+    display: inline-block;
+    visibility: hidden;
+    position: absolute;
+    top: 0;
+    left: -9999em;
+    line-height: normal;
+}
+
+.xterm.enable-mouse-events {
+    /* When mouse events are enabled (eg. tmux), revert to the standard pointer cursor */
+    cursor: default;
+}
+
+.xterm.xterm-cursor-pointer,
+.xterm .xterm-cursor-pointer {
+    cursor: pointer;
+}
+
+.xterm.column-select.focus {
+    /* Column selection mode */
+    cursor: crosshair;
+}
+
+.xterm .xterm-accessibility,
+.xterm .xterm-message {
+    position: absolute;
+    left: 0;
+    top: 0;
+    bottom: 0;
+    right: 0;
+    z-index: 10;
+    color: transparent;
+    pointer-events: none;
+}
+
+.xterm .live-region {
+    position: absolute;
+    left: -9999px;
+    width: 1px;
+    height: 1px;
+    overflow: hidden;
+}
+
+.xterm-dim {
+    /* Dim should not apply to background, so the opacity of the foreground color is applied
+     * explicitly in the generated class and reset to 1 here */
+    opacity: 1 !important;
+}
+
+.xterm-underline-1 { text-decoration: underline; }
+.xterm-underline-2 { text-decoration: double underline; }
+.xterm-underline-3 { text-decoration: wavy underline; }
+.xterm-underline-4 { text-decoration: dotted underline; }
+.xterm-underline-5 { text-decoration: dashed underline; }
+
+.xterm-overline {
+    text-decoration: overline;
+}
+
+.xterm-overline.xterm-underline-1 { text-decoration: overline underline; }
+.xterm-overline.xterm-underline-2 { text-decoration: overline double underline; }
+.xterm-overline.xterm-underline-3 { text-decoration: overline wavy underline; }
+.xterm-overline.xterm-underline-4 { text-decoration: overline dotted underline; }
+.xterm-overline.xterm-underline-5 { text-decoration: overline dashed underline; }
+
+.xterm-strikethrough {
+    text-decoration: line-through;
+}
+
+.xterm-screen .xterm-decoration-container .xterm-decoration {
+	z-index: 6;
+	position: absolute;
+}
+
+.xterm-screen .xterm-decoration-container .xterm-decoration.xterm-decoration-top-layer {
+	z-index: 7;
+}
+
+.xterm-decoration-overview-ruler {
+    z-index: 8;
+    position: absolute;
+    top: 0;
+    right: 0;
+    pointer-events: none;
+}
+
+.xterm-decoration-top {
+    z-index: 2;
+    position: relative;
+}
--- a/bindata/static/css/xterm_customize.css
+++ b/bindata/static/css/xterm_customize.css
@ -0,0 +1,19 @@
+.terminal {
+    font-family: "DejaVu Sans Mono", "Everson Mono", FreeMono, Menlo, Terminal, monospace, "Apple Symbols";
+}
+
+.xterm-overlay {
+    font-family: "DejaVu Sans Mono", "Everson Mono", FreeMono, Menlo, Terminal, monospace, "Apple Symbols";
+    border-radius: 15px;
+    font-size: xx-large;
+    color: black;
+    background: white;
+    opacity: 0.75;
+    padding: 0.2em 0.5em 0.2em 0.5em;
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    user-select: none;
+    transition: opacity 180ms ease-in;
+}
--- a/bindata/static/favicon.ico
+++ b/bindata/static/favicon.ico
--- a/bindata/static/icon.svg
+++ b/bindata/static/icon.svg
@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   viewBox="0 0 708.4149 708.41411"
+   height="708.41412"
+   width="708.41492"
+   xml:space="preserve"
+   id="svg2"
+   version="1.1"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6"><clipPath
+       id="clipPath18"
+       clipPathUnits="userSpaceOnUse"><path
+         id="path16"
+         d="M 0,2000 H 2000 V 0 H 0 Z" /></clipPath></defs><g
+     transform="matrix(1.3333333,0,0,-1.3333333,-979.12558,1687.5405)"
+     id="g10"><g
+       id="g12"><g
+         clip-path="url(#clipPath18)"
+         id="g14"><g
+           transform="translate(772.1414,1265.6554)"
+           id="g20"><path
+             id="path22"
+             style="fill:#de3c28;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             d="m 0,0 c -20.875,0 -37.797,-16.922 -37.797,-37.797 v -126.348 -25.917 -212.342 L 345.882,0 Z" /></g><g
+           transform="translate(956.8504,734.3448)"
+           id="g24"><path
+             id="path26"
+             style="fill:#af1419;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             d="m 0,0 h 260.209 c 26.839,0 48.596,21.757 48.596,48.596 v 275.281 z" /></g><g
+           transform="translate(1265.6552,1075.5929)"
+           id="g28"><path
+             id="path30"
+             style="fill:#db0918;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             d="m 0,0 v 25.918 126.348 c 0,20.875 -16.922,37.796 -37.796,37.796 h -109.836 l -383.679,-402.404 v -80.31 c 0,-26.839 21.757,-48.596 48.596,-48.596 h 173.91 L 0,-17.371 Z" /></g><g
+           transform="translate(1169.2147,909.6954)"
+           id="g32"><path
+             id="path34"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
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--- a/bindata/static/icon_192.png
+++ b/bindata/static/icon_192.png
--- a/bindata/static/index.html
+++ b/bindata/static/index.html
@ -0,0 +1,22 @@
+<!doctype html>
+<html>
+
+<head>
+  <title>{{ .title }}</title>
+  <link rel="manifest" href="manifest.json" crossorigin="use-credentials">
+  <link rel="icon" href="favicon.ico">
+  <link rel="icon" href="icon.svg" type="image/svg+xml">
+  <link rel="stylesheet" href="./css/index.css" />
+  <link rel="stylesheet" href="./css/xterm.css" />
+  <link rel="stylesheet" href="./css/xterm_customize.css" />
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+
+<body>
+  <div id="terminal"></div>
+  <script src="./auth_token.js"></script>
+  <script src="./config.js"></script>
+  <script src="./js/gotty.js"></script>
+</body>
+
+</html>
--- a/bindata/static/js/gotty.js
+++ b/bindata/static/js/gotty.js
--- a/bindata/static/js/gotty.js.LICENSE.txt
+++ b/bindata/static/js/gotty.js.LICENSE.txt
@ -0,0 +1,7 @@
+/*!
+  * Bootstrap v5.3.2 (https://getbootstrap.com/)
+  * Copyright 2011-2023 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
+  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+  */
+
+/*! crc32.js (C) 2014-present SheetJS -- http://sheetjs.com */
--- a/bindata/static/js/gotty.js.map
+++ b/bindata/static/js/gotty.js.map
--- a/bindata/static/js/gotty.licenses.txt
+++ b/bindata/static/js/gotty.licenses.txt
@ -0,0 +1,649 @@
+@popperjs/core
+MIT
+The MIT License (MIT)
+
+Copyright (c) 2019 Federico Zivolo
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+bootstrap
+MIT
+The MIT License (MIT)
+
+Copyright (c) 2011-2023 The Bootstrap Authors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+crc-32
+Apache-2.0
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
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+      outstanding shares, or (iii) beneficial ownership of such entity.
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+      "You" (or "Your") shall mean an individual or Legal Entity
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+
+css-loader
+MIT
+Copyright JS Foundation and other contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+jsx-runtime
+MIT
+The MIT License (MIT)
+
+Copyright (c) 2015-present Jason Miller
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+
+preact
+MIT
+The MIT License (MIT)
+
+Copyright (c) 2015-present Jason Miller
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+
+style-loader
+MIT
+Copyright JS Foundation and other contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+
+xterm
+MIT
+Copyright (c) 2017-2019, The xterm.js authors (https://github.com/xtermjs/xterm.js)
+Copyright (c) 2014-2016, SourceLair Private Company (https://www.sourcelair.com)
+Copyright (c) 2012-2013, Christopher Jeffrey (https://github.com/chjj/)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+xterm-addon-fit
+MIT
+Copyright (c) 2019, The xterm.js authors (https://github.com/xtermjs/xterm.js)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+xterm-addon-web-links
+MIT
+Copyright (c) 2017, The xterm.js authors (https://github.com/xtermjs/xterm.js)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+xterm-addon-webgl
+MIT
+Copyright (c) 2018, The xterm.js authors (https://github.com/xtermjs/xterm.js)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+
+zmodem.js
+Apache-2.0
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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+      outstanding shares, or (iii) beneficial ownership of such entity.
+
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+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
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+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
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+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
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+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
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+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
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+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
--- a/bindata/static/manifest.json
+++ b/bindata/static/manifest.json
@ -0,0 +1,15 @@
+{
+  "short_name": "{{ .title }}",
+  "name": "{{ .title }}",
+  "start_url": "./",
+  "icons": [
+    {
+      "src": "./icon_192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    }
+  ],
+  "display": "minimal-ui",
+  "theme_color": "#000000",
+  "background_color": "#000000"
+}
--- a/favicon.ai
+++ b/favicon.ai
--- a/go.mod
+++ b/go.mod
@ -1,5 +1,22 @@
-module github.com/sorenisanerd/gotty/v2
+module github.com/sorenisanerd/gotty

-go 1.13
+go 1.20

-retract [v2.0.0, v2.1.1]
+require (
+	github.com/NYTimes/gziphandler v1.1.1
+	github.com/creack/pty v1.1.11
+	github.com/fatih/structs v1.1.0
+	github.com/gorilla/websocket v1.4.2
+	github.com/pkg/errors v0.9.1
+	github.com/urfave/cli/v2 v2.3.0
+	github.com/yudai/hcl v0.0.0-20151013225006-5fa2393b3552
+)
+
+require (
+	github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d // indirect
+	github.com/hashicorp/errwrap v1.0.0 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/russross/blackfriday/v2 v2.0.1 // indirect
+	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
+	golang.org/x/sys v0.1.0 // indirect
+)
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,36 @@
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/NYTimes/gziphandler v1.1.1 h1:ZUDjpQae29j0ryrS0u/B8HZfJBtBQHjqw2rQ2cqUQ3I=
+github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c=
+github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
+github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
+github.com/creack/pty v1.1.11 h1:07n33Z8lZxZ2qwegKbObQohDhXDQxiMMz1NOUGYlesw=
+github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatih/structs v1.1.0 h1:Q7juDM0QtcnhCpeyLGQKyg4TOIghuNXrkL32pHAUMxo=
+github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
+github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
+github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
+github.com/hashicorp/errwrap v1.0.0 h1:hLrqtEDnRye3+sgx6z4qVLNuviH3MR5aQ0ykNJa/UYA=
+github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
+github.com/hashicorp/go-multierror v1.1.1 h1:H5DkEtf6CXdFp0N0Em5UCwQpXMWke8IA0+lD48awMYo=
+github.com/hashicorp/go-multierror v1.1.1/go.mod h1:iw975J/qwKPdAO1clOe2L8331t/9/fmwbPZ6JB6eMoM=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
+github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
+github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/urfave/cli/v2 v2.3.0 h1:qph92Y649prgesehzOrQjdWyxFOp/QVM+6imKHad91M=
+github.com/urfave/cli/v2 v2.3.0/go.mod h1:LJmUH05zAU44vOAcrfzZQKsZbVcdbOG8rtL3/XcUArI=
+github.com/yudai/hcl v0.0.0-20151013225006-5fa2393b3552 h1:tjsK9T2IA3d2FFNxzDP7AJf+EXhyuPd7PB4Z2HrtAoc=
+github.com/yudai/hcl v0.0.0-20151013225006-5fa2393b3552/go.mod h1:hg0ZaCmQL3rze1cH8Fh2g0a9q8vQs0uN8ESpePEwSEw=
+golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
--- a/js/package-lock.json
+++ b/js/package-lock.json
--- a/js/package.json
+++ b/js/package.json
@ -0,0 +1,34 @@
+{
+    "name": "gotty",
+    "version": "1.4.0",
+    "private": true,
+    "devDependencies": {
+        "@types/bootstrap": "^5.2.10",
+        "compression-webpack-plugin": "^9.2.0",
+        "license-loader": "^0.5.0",
+        "license-webpack-plugin": "^4.0.2",
+        "purgecss": "^4.1.3",
+        "sass": "^1.70.0",
+        "sass-loader": "^12.6.0",
+        "terser-webpack-plugin": "^5.3.10",
+        "ts-loader": "^8.4.0",
+        "typescript": "^4.9.5",
+        "webpack": "^5.90.1",
+        "webpack-cli": "^4.10.0",
+        "webpack-dev-server": "^4.15.1"
+    },
+    "dependencies": {
+        "@popperjs/core": "^2.11.8",
+        "bootstrap": "^5.3.2",
+        "css-loader": "^5.2.7",
+        "debounce": "^1.2.1",
+        "preact": "^10.19.4",
+        "react-bootstrap": "^2.10.1",
+        "style-loader": "^2.0.0",
+        "xterm": "^5.3.0",
+        "xterm-addon-fit": "^0.8.0",
+        "xterm-addon-web-links": "^0.9.0",
+        "xterm-addon-webgl": "^0.16.0",
+        "zmodem.js": "^0.1.10"
+    }
+}
--- a/js/src/MyModal.tsx
+++ b/js/src/MyModal.tsx
@ -0,0 +1,63 @@
+import { createRef, Component, ComponentChildren } from "preact";
+import { Modal } from "bootstrap";
+import './bootstrap.scss';
+
+interface ModalProps {
+  children: ComponentChildren;
+  buttons?: ComponentChildren;
+  title: string;
+  dismissHandler?: (hideModal?: () => void) => void;
+}
+
+export class MyModal extends Component<ModalProps, {}> {
+  ref = createRef<HTMLDivElement>();
+
+  constructor() {
+    super();
+  }
+
+  componentDidMount() {
+    Modal.getOrCreateInstance(this.ref.current!).show();
+    this.ref.current?.addEventListener('hide.bs.modal', () => { this.props.dismissHandler && this.props.dismissHandler(); });
+  }
+
+  componentWillUnmount() {
+    this.hide()
+  }
+
+  hide(): void {
+    Modal.getOrCreateInstance(this.ref.current!).hide();
+  }
+
+  render() {
+    return <div class="modal fade" ref={this.ref} tabIndex={-1} aria-hidden="true">
+      <div class="modal-dialog">
+        <div class="modal-content">
+          <div class="modal-header">
+            <h5 class="modal-title">{this.props.title}</h5>
+            <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+          </div>
+          <div class="modal-body">
+            {this.props.children}
+          </div>
+          <div class="modal-footer">
+            {this.props.buttons}
+          </div>
+        </div>
+      </div>
+    </div>;
+  }
+}
+
+interface ButtonProps {
+  priority: "primary" | "secondary" | "danger"
+  clickHandler?: () => void
+  children: ComponentChildren
+  disabled?: boolean;
+}
+
+export function Button(props:ButtonProps) {
+  let classes: string = "btn btn-" + props.priority
+
+  return <button type="button" disabled={props.disabled} class={classes} onClick={ () => { props.clickHandler ? props.clickHandler() : null; }}>{ props.children}</button>
+}
--- a/js/src/bootstrap.scss
+++ b/js/src/bootstrap.scss
@ -0,0 +1,26 @@
+@import "mixins/banner";
+@include bsBanner("");
+
+
+// scss-docs-start import-stack
+// Configuration
+@import "functions";
+@import "variables";
+@import "variables-dark";
+@import "maps";
+@import "mixins";
+@import "utilities";
+
+// Layout & components
+@import "root";
+@import "reboot";
+@import "type";
+@import "images";
+@import "containers";
+@import "grid";
+@import "buttons";
+@import "transitions";
+@import "progress";
+@import "close";
+@import "modal";
+@import "spinners";
--- a/js/src/main.ts
+++ b/js/src/main.ts
@ -0,0 +1,31 @@
+import { ConnectionFactory } from "./websocket";
+import { Terminal, WebTTY, protocols } from "./webtty";
+import { OurXterm } from "./xterm";
+
+// @TODO remove these
+declare var gotty_auth_token: string;
+declare var gotty_term: string;
+declare var gotty_ws_query_args: string;
+
+const elem = document.getElementById("terminal")
+
+if (elem !== null) {
+    var term: Terminal;
+    term = new OurXterm(elem);
+
+    const httpsEnabled = window.location.protocol == "https:";
+    const queryArgs = (gotty_ws_query_args === "") ? "" : "?" + gotty_ws_query_args;
+    const url = (httpsEnabled ? 'wss://' : 'ws://') + window.location.host + window.location.pathname + 'ws' + queryArgs;
+    const args = window.location.search;
+    const factory = new ConnectionFactory(url, protocols);
+    const wt = new WebTTY(term, factory, args, gotty_auth_token);
+    const closer = wt.open();
+
+    // According to https://developer.mozilla.org/en-US/docs/Web/API/Window/unload_event
+    // this event is unreliable and in some cases (Firefox is mentioned), having an
+    // "unload" event handler can have unwanted side effects. Consider commenting it out.
+    window.addEventListener("unload", () => {
+        closer();
+        term.close();
+    });
+};
--- a/js/src/websocket.ts
+++ b/js/src/websocket.ts
@ -0,0 +1,59 @@
+export class ConnectionFactory {
+    url: string;
+    protocols: string[];
+
+    constructor(url: string, protocols: string[]) {
+        this.url = url;
+        this.protocols = protocols;
+    };
+
+    create(): Connection {
+        return new Connection(this.url, this.protocols);
+    };
+}
+
+export class Connection {
+    bare: WebSocket;
+
+    constructor(url: string, protocols: string[]) {
+        this.bare = new WebSocket(url, protocols);
+    }
+
+    open() {
+        // nothing todo for websocket
+    };
+
+    close() {
+        this.bare.close();
+    };
+
+    send(data: string) {
+        this.bare.send(data);
+    };
+
+    isOpen(): boolean {
+        if (this.bare.readyState == WebSocket.CONNECTING ||
+            this.bare.readyState == WebSocket.OPEN) {
+            return true
+        }
+        return false
+    }
+
+    onOpen(callback: () => void) {
+        this.bare.onopen = (event) => {
+            callback();
+        }
+    };
+
+    onReceive(callback: (data: string) => void) {
+        this.bare.onmessage = (event) => {
+            callback(event.data);
+        }
+    };
+
+    onClose(callback: () => void) {
+        this.bare.onclose = (event) => {
+            callback();
+        };
+    };
+}
--- a/js/src/webtty.tsx
+++ b/js/src/webtty.tsx
@ -0,0 +1,270 @@
+export const protocols = ["webtty"];
+
+export const msgInputUnknown = '0';
+export const msgInput = '1';
+export const msgPing = '2';
+export const msgResizeTerminal = '3';
+export const msgSetEncoding = '4';
+
+export const msgUnknownOutput = '0';
+export const msgOutput = '1';
+export const msgPong = '2';
+export const msgSetWindowTitle = '3';
+export const msgSetPreferences = '4';
+export const msgSetReconnect = '5';
+export const msgSetBufferSize = '6';
+
+
+export interface Terminal {
+    /*
+     * Get dimensions of the terminal
+     */
+    info(): { columns: number, rows: number };
+
+    /*
+     * Process output from the server side
+     */
+    output(data: Uint8Array): void;
+
+    /*
+     * Display a message overlay on the terminal
+     */
+    showMessage(message: string, timeout: number): void;
+
+    // Don't think we need this anymore
+    //    getMessage(): HTMLElement;
+
+    /*
+     * Remove message shown by shoMessage. You only need to call
+     * this if you want to dismiss it sooner than the timeout.
+     */
+    removeMessage(): void;
+
+
+    /*
+     * Set window title
+     */
+    setWindowTitle(title: string): void;
+
+    /*
+     * Set preferences. TODO: Add typings
+     */
+    setPreferences(value: object): void;
+
+
+    /*
+     * Sets an input (e.g. user types something) handler
+     */
+    onInput(callback: (input: string) => void): void;
+
+    /*
+     * Sets a resize handler
+     */
+    onResize(callback: (colmuns: number, rows: number) => void): void;
+
+    reset(): void;
+    deactivate(): void;
+    close(): void;
+}
+
+export interface Connection {
+    open(): void;
+    close(): void;
+
+    /*
+     * This takes fucking strings??
+     */
+    send(s: string): void;
+
+    isOpen(): boolean;
+    onOpen(callback: () => void): void;
+    onReceive(callback: (data: string) => void): void;
+    onClose(callback: () => void): void;
+}
+
+export interface ConnectionFactory {
+    create(): Connection;
+}
+
+export class WebTTY {
+    /*
+     * A terminal instance that implements the Terminal interface.
+     * This made a lot of sense when we had both HTerm and xterm, but
+     * now I wonder if the abstraction makes sense. Keeping it for now,
+     * though.
+     */
+    term: Terminal;
+
+    /*
+     * ConnectionFactory and connection instance. We pass the factory
+     * in instead of just a connection so that we can reconnect.
+     */
+    connectionFactory: ConnectionFactory;
+    connection: Connection;
+
+    /*
+     * Arguments passed in by the user. We forward them to the backend
+     * where they are appended to the command line.
+     */
+    args: string;
+
+    /*
+     * An authentication token. The client gets this from `/auth_token.js`.
+     */
+    authToken: string;
+
+    /*
+     * If connection is dropped, reconnect after `reconnect` seconds.
+     * -1 means do not reconnect.
+     */
+    reconnect: number;
+
+    /*
+     * The server's buffer size. If a single message exceeds this size, it will
+     * be truncated on the server, so we track it here so that we can split messages
+     * into chunks small enough that we don't hurt the server's feelings.
+     */
+    bufSize: number;
+
+    constructor(term: Terminal, connectionFactory: ConnectionFactory, args: string, authToken: string) {
+        this.term = term;
+        this.connectionFactory = connectionFactory;
+        this.args = args;
+        this.authToken = authToken;
+        this.reconnect = -1;
+        this.bufSize = 1024;
+    };
+
+    open() {
+        let connection = this.connectionFactory.create();
+        let pingTimer: NodeJS.Timeout;
+        let reconnectTimeout: NodeJS.Timeout;
+        this.connection = connection;
+
+        const setup = () => {
+            connection.onOpen(() => {
+                const termInfo = this.term.info();
+
+                this.initializeConnection(this.args, this.authToken);
+
+                this.term.onResize((columns: number, rows: number) => {
+                    this.sendResizeTerminal(columns, rows);
+                });
+
+                this.sendResizeTerminal(termInfo.columns, termInfo.rows);
+
+                this.sendSetEncoding("base64");
+
+                this.term.onInput(
+                    (input: string | Uint8Array) => {
+                        this.sendInput(input);
+                    }
+                );
+
+                pingTimer = setInterval(() => {
+                    this.sendPing()
+                }, 30 * 1000);
+            });
+
+            connection.onReceive((data) => {
+                const payload = data.slice(1);
+                switch (data[0]) {
+                    case msgOutput:
+                        this.term.output(Uint8Array.from(atob(payload), c => c.charCodeAt(0)));
+                        break;
+                    case msgPong:
+                        break;
+                    case msgSetWindowTitle:
+                        this.term.setWindowTitle(payload);
+                        break;
+                    case msgSetPreferences:
+                        const preferences = JSON.parse(payload);
+                        this.term.setPreferences(preferences);
+                        break;
+                    case msgSetReconnect:
+                        const autoReconnect = JSON.parse(payload);
+                        console.log("Enabling reconnect: " + autoReconnect + " seconds")
+                        this.reconnect = autoReconnect;
+                        break;
+                    case msgSetBufferSize:
+                        const bufSize = JSON.parse(payload);
+                        this.bufSize = bufSize;
+                        break;
+                }
+            });
+
+            connection.onClose(() => {
+                clearInterval(pingTimer);
+                this.term.deactivate();
+                this.term.showMessage("Connection Closed", 0);
+                if (this.reconnect > 0) {
+                    reconnectTimeout = setTimeout(() => {
+                        connection = this.connectionFactory.create();
+                        this.term.reset();
+                        setup();
+                    }, this.reconnect * 1000);
+                }
+            });
+
+            connection.open();
+        }
+
+        setup();
+        return () => {
+            clearTimeout(reconnectTimeout);
+            connection.close();
+        }
+    };
+
+    private initializeConnection(args, authToken) {
+        this.connection.send(JSON.stringify(
+            {
+                Arguments: args,
+                AuthToken: authToken,
+            }
+        ));
+    }
+
+    /*
+     * sendInput sends data to the server. It accepts strings or Uint8Arrays.
+     * strings will be encoded as UTF-8. Uint8Arrays are passed along as-is.
+     */
+    private sendInput(input: string | Uint8Array) {
+        let effectiveBufferSize = this.bufSize - 1;
+        let dataString: string;
+
+        if (typeof input === "string") {
+            dataString = input;
+        } else {
+            dataString = String.fromCharCode(...input)
+        }
+
+        // Account for base64 encoding
+        let maxChunkSize = Math.floor(effectiveBufferSize / 4) * 3;
+
+        for (let i = 0; i < Math.ceil(dataString.length / maxChunkSize); i++) {
+            let inputChunk = dataString.substring(i * maxChunkSize, Math.min((i + 1) * maxChunkSize, dataString.length))
+            this.connection.send(msgInput + btoa(inputChunk));
+        }
+    }
+
+    private sendPing(): void {
+        this.connection.send(msgPing);
+    }
+
+    private sendResizeTerminal(colmuns: number, rows: number) {
+        this.connection.send(
+            msgResizeTerminal + JSON.stringify(
+                {
+                    columns: colmuns,
+                    rows: rows
+                }
+            )
+        );
+    }
+
+    private sendSetEncoding(encoding: "base64" | "null") {
+        this.connection.send(msgSetEncoding + encoding)
+    }
+
+};
--- a/js/src/xterm.tsx
+++ b/js/src/xterm.tsx
@ -0,0 +1,166 @@
+import { IDisposable, Terminal } from "xterm";
+import { FitAddon } from 'xterm-addon-fit';
+import { WebLinksAddon } from 'xterm-addon-web-links';
+import { WebglAddon } from 'xterm-addon-webgl';
+import { ZModemAddon } from "./zmodem";
+
+export class OurXterm {
+    // The HTMLElement that contains our terminal
+    elem: HTMLElement;
+
+    // The xtermjs.XTerm
+    term: Terminal;
+
+    resizeListener: () => void;
+
+    message: HTMLElement;
+    messageTimeout: number;
+    messageTimer: NodeJS.Timeout;
+
+    onResizeHandler: IDisposable;
+    onDataHandler: IDisposable;
+
+    fitAddOn: FitAddon;
+    zmodemAddon: ZModemAddon;
+    toServer: (data: string | Uint8Array) => void;
+    encoder: TextEncoder
+
+    constructor(elem: HTMLElement) {
+        this.elem = elem;
+        this.term = new Terminal();
+        this.fitAddOn = new FitAddon();
+        this.zmodemAddon = new ZModemAddon({
+            toTerminal: (x: Uint8Array) => this.term.write(x),
+            toServer: (x: Uint8Array) => this.sendInput(x)
+        });
+        this.term.loadAddon(new WebLinksAddon());
+        this.term.loadAddon(this.fitAddOn);
+        this.term.loadAddon(this.zmodemAddon);
+
+        this.message = elem.ownerDocument.createElement("div");
+        this.message.className = "xterm-overlay";
+        this.messageTimeout = 2000;
+
+        this.resizeListener = () => {
+            this.fitAddOn.fit();
+            this.term.scrollToBottom();
+            this.showMessage(String(this.term.cols) + "x" + String(this.term.rows), this.messageTimeout);
+        };
+
+        this.term.open(elem);
+        this.term.focus();
+        this.resizeListener();
+
+        window.addEventListener("resize", () => { this.resizeListener(); });
+    };
+
+    info(): { columns: number, rows: number } {
+        return { columns: this.term.cols, rows: this.term.rows };
+    };
+
+    // This gets called from the Websocket's onReceive handler
+    output(data: Uint8Array) {
+        this.zmodemAddon.consume(data);
+    };
+
+    getMessage(): HTMLElement {
+        return this.message;
+    }
+
+    showMessage(message: string, timeout: number) {
+        this.message.innerHTML = message;
+        this.showMessageElem(timeout);
+    }
+
+    showMessageElem(timeout: number) {
+        this.elem.appendChild(this.message);
+
+        if (this.messageTimer) {
+            clearTimeout(this.messageTimer);
+        }
+        if (timeout > 0) {
+            this.messageTimer = setTimeout(() => {
+                try {
+                    this.elem.removeChild(this.message);
+                } catch (error) {
+                    console.error(error);
+                }
+            }, timeout);
+        }
+    };
+
+    removeMessage(): void {
+        if (this.message.parentNode == this.elem) {
+            this.elem.removeChild(this.message);
+        }
+    }
+
+    setWindowTitle(title: string) {
+        document.title = title;
+    };
+
+    setPreferences(value: object) {
+        Object.keys(value).forEach((key) => {
+            if (key == "EnableWebGL" && key) {
+                this.term.loadAddon(new WebglAddon());
+            } else if (key == "font-size") {
+                this.term.options.fontSize = value[key]
+            } else if (key == "font-family") {
+                this.term.options.fontFamily = value[key]
+            }
+        });
+    };
+
+    sendInput(data: Uint8Array) {
+        return this.toServer(data)
+    }
+
+    onInput(callback: (input: string) => void) {
+        this.encoder = new TextEncoder()
+        this.toServer = callback;
+
+        // I *think* we're ok like this, but if not, we can dispose
+        // of the previous handler and put the new one in place.
+        if (this.onDataHandler !== undefined) {
+            return
+        }
+
+        this.onDataHandler = this.term.onData((input) => {
+            this.toServer(this.encoder.encode(input));
+        });
+    };
+
+    onResize(callback: (colmuns: number, rows: number) => void) {
+        this.onResizeHandler = this.term.onResize(() => {
+            callback(this.term.cols, this.term.rows);
+        });
+    };
+
+    deactivate(): void {
+        this.onDataHandler.dispose();
+        this.onResizeHandler.dispose();
+        this.term.blur();
+    }
+
+    reset(): void {
+        this.removeMessage();
+        this.term.clear();
+    }
+
+    close(): void {
+        window.removeEventListener("resize", this.resizeListener);
+        this.term.dispose();
+    }
+
+    disableStdin(): void {
+        this.term.options.disableStdin = true;
+    }
+
+    enableStdin(): void {
+        this.term.options.disableStdin = false;
+    }
+
+    focus(): void {
+        this.term.focus();
+    }
+}
--- a/js/src/zmodem.tsx
+++ b/js/src/zmodem.tsx
@ -0,0 +1,245 @@
+import { Component, ComponentChildren, createRef, render } from "preact";
+import { ITerminalAddon, Terminal } from "xterm";
+import { Browser, Detection, Offer, Sentry, Session } from 'zmodem.js/src/zmodem_browser';
+import { Button, MyModal } from "./MyModal";
+
+export class ZModemAddon implements ITerminalAddon {
+    term: Terminal;
+    elem: HTMLDivElement;
+    sentry: Sentry;
+    toTerminal: (data: Uint8Array) => void;
+    toServer: (data: Uint8Array) => void;
+
+    constructor(props: {
+        toTerminal: (data: Uint8Array) => void,
+        toServer: (data: Uint8Array) => void
+    }) {
+        this.createElement();
+        this.toTerminal = props.toTerminal;
+        this.toServer = props.toServer;
+
+        this.init();
+    }
+
+    private createElement() {
+        this.elem = document.createElement("div");
+        document.body.prepend(this.elem);
+    }
+
+    consume(data: Uint8Array) {
+        this.sentry.consume(data)
+    }
+
+    activate(terminal: Terminal): void {
+        this.term = terminal
+    }
+
+    dispose() {
+    }
+
+    private init() {
+        render(<></>, this.elem);
+
+        this.sentry = new Sentry({
+            'to_terminal': (d: Uint8Array) => this.toTerminal(d),
+            'on_detect': (detection: Detection) => this.onDetect(detection),
+            'sender': (x: Uint8Array) => { this.toServer(x) },
+            'on_retract': () => this.reset(),
+        });
+    }
+
+    private reset() {
+        this.init();
+        this.term.options.disableStdin = false;
+        this.term.focus();
+    }
+
+    private onDetect(detection: Detection) {
+        var zsession = detection.confirm();
+
+        this.term.options.disableStdin = true;
+
+        zsession.on('session_end', () => { this.reset() });
+
+        if (zsession.type === "send") {
+            this.send(zsession);
+        }
+        else {
+            zsession.on("offer", (xfer: any) => this.onOffer(xfer));
+            zsession.start();
+        }
+    }
+
+    private send(zsession: Session) {
+        render(<SendFileModal session={zsession} />, this.elem)
+    }
+
+    private onOffer(xfer: Offer) {
+        render(<ReceiveFileModal xfer={xfer} onFinish={() => this.reset()} />, this.elem)
+    }
+}
+
+// Renders a bootstrap progress bar
+function Progress(props: { min: number, max: number, now: number, children?: ComponentChildren }) {
+    let { min, max, now } = props;
+    let percentage = "0";
+
+    if ((typeof min === "number") &&
+        (typeof max === "number") &&
+        (typeof now === "number") &&
+        (min != max)) {
+        percentage = (100 * (now - min) / (max - min)).toFixed(0);
+    }
+
+    return <div class="progress">
+        <div class="progress-bar" role="progressbar" style={"width: " + percentage + "%"} aria-valuenow={now} aria-valuemin={min} aria-valuemax={max}>{props.children}</div>
+    </div>
+}
+
+interface ReceiveFileModalProps {
+    xfer: Offer;
+    onFinish?: () => void;
+}
+
+interface ReceiveFileModalState {
+    state: "notstarted" | "started" | "skipped" | "done"
+}
+
+export class ReceiveFileModal extends Component<ReceiveFileModalProps, ReceiveFileModalState> {
+    constructor(props) {
+        super(props)
+        this.setState({ state: "notstarted" })
+    }
+
+    accept() {
+        this.setState({ state: "started" });
+
+        let timerID = setInterval(
+            () => this.forceUpdate(),
+            100
+        );
+
+        this.props.xfer.accept().then((payloads: any) => {
+            // All done, so stop updating the progress bar
+            // and perform a final render.
+            clearInterval(timerID);
+            this.forceUpdate();
+
+            if (this.state.state != "skipped") {
+                Browser.save_to_disk(
+                    payloads,
+                    this.props.xfer.get_details().name
+                );
+            }
+            this.setState({ state: "done" })
+        })
+    }
+
+    finish() {
+        console.log('finished');
+        if (this.props.onFinish) this.props.onFinish();
+    }
+
+    progress() {
+        if (this.state.state !== "notstarted") {
+            return <Progress min={0} max={this.props.xfer.get_details().size} now={this.props.xfer.get_offset()} />
+        }
+    }
+
+    skip() {
+        this.props.xfer.skip()
+        this.setState({ state: "skipped" })
+    }
+
+    buttons() {
+        switch (this.state.state) {
+            case "notstarted":
+                return <>
+                    <Button priority="primary" clickHandler={() => { this.accept(); }}>Accept</Button>
+                    <Button priority="secondary" clickHandler={() => { this.skip(); }}>Decline</Button>
+                </>
+            case "started":
+                return <>
+                    <Button priority="danger" clickHandler={() => { this.skip(); }}>Cancel</Button>
+                </>
+            case "skipped":
+                return <>
+                    <Button priority="danger" disabled={true}>Skipping...</Button>
+                </>
+        }
+    }
+
+    render() {
+        if (this.state.state != "done")
+            return <MyModal title="Incoming file"
+                buttons={this.buttons()}>
+                Accept <code>{this.props.xfer.get_details().name}</code> ({this.props.xfer.get_details().size.toLocaleString(undefined, { maximumFractionDigits: 0 })} bytes)?
+                {this.progress()}
+            </MyModal>
+    }
+}
+
+
+export class SendFileModal extends Component<SendFileModalProps, SendFileModalState> {
+    filePickerRef = createRef<HTMLInputElement>();
+
+    constructor(props: SendFileModalProps) {
+        super(props)
+        this.setState({ state: "notstarted" })
+    }
+
+    buttons() {
+        switch (this.state.state) {
+            case "started":
+                return <>
+                    <Button priority="primary" clickHandler={() => { this.send(); }} disabled={true}>
+                        Sending...
+                        <span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span>
+                    </Button>
+                </>
+            case "notstarted":
+                return <>
+                    <Button priority="primary" clickHandler={() => { this.send(); }}>Send</Button>
+                </>
+            default:
+                return
+        }
+    }
+
+    send() {
+        Browser.send_files(this.props.session,
+            this.filePickerRef.current!.files, {
+            on_offer_response: (f, xfer) => { this.setState({ state: "started" }) },
+        }).then(() => {
+            this.setState({ state: "done" })
+            this.props.session.close()
+            if (this.props.onFinish !== undefined) {
+                this.props.onFinish();
+            }
+        })
+            .catch(e => console.log(e));
+    }
+
+    render() {
+        if (this.state.state != "done")
+            return <MyModal title="Send file(s)"
+                buttons={this.buttons()}>
+                <div class="mb-3">
+                    <label for="formFileMultiple" class="form-label">
+                        Remote requested file transfer
+                    </label>
+                    <input ref={this.filePickerRef} class="form-control form-control-sm" type="file" id="formFileMultiple" multiple />
+                </div>
+            </MyModal>
+    }
+}
+
+interface SendFileModalProps {
+    onFinish?: () => void;
+    session: Session;
+}
+
+interface SendFileModalState {
+    state: "notstarted" | "started" | "done"
+    currentFile: any
+}
--- a/js/tsconfig.json
+++ b/js/tsconfig.json
@ -0,0 +1,24 @@
+{
+  "compilerOptions": {
+      "outDir": "./dist/",
+      "jsx": "react-jsx",
+      "jsxImportSource": "preact",
+      "strictNullChecks": true,
+      "noUnusedLocals" : true,
+      "noImplicitThis": true,
+      "alwaysStrict": true,
+      "declaration": true,
+      "sourceMap": true,
+      "target": "esnext",
+      "module": "commonJS",
+      "baseUrl": ".",
+      "types": ["preact", "node"],
+      "paths": {
+          "*": ["./typings/*"]
+      }
+  },
+    "exclude": [
+      "node_modules",
+      "dist"
+    ]
+}
--- a/js/webpack.config.js
+++ b/js/webpack.config.js
@ -0,0 +1,57 @@
+const path = require('path');
+const TerserPlugin = require("terser-webpack-plugin");
+const LicenseWebpackPlugin = require('license-webpack-plugin').LicenseWebpackPlugin;
+
+var devtool;
+
+if (process.env.DEV === '1') {
+    devtool = 'inline-source-map';
+} else {
+    devtool = 'source-map';
+}
+
+module.exports = {
+    entry: "./src/main.ts",
+    entry: {
+        "gotty": "./src/main.ts",
+    },
+    output: {
+        path: path.resolve(__dirname, '../bindata/static/js/'),
+    },
+    devtool: devtool,
+    resolve: {
+        extensions: [".ts", ".tsx", ".js"],
+    },
+    plugins: [
+        new LicenseWebpackPlugin()
+    ],
+    module: {
+        rules: [
+            {
+                test: /\.tsx?$/,
+                loader: "ts-loader",
+                exclude: /node_modules/
+            },
+            {
+                test: /\.css$/i,
+                use: ["style-loader", "css-loader"],
+            },
+            {
+                test: /\.scss$/i,
+                use: ["style-loader", "css-loader", {
+                    loader: "sass-loader",
+                    options: {
+                        sassOptions: {
+                            includePaths: ["node_modules/bootstrap/scss"]
+                        }
+                    }
+                }
+                ],
+            },
+        ],
+    },
+    optimization: {
+        minimize: true,
+        minimizer: [new TerserPlugin()],
+    },
+};
--- a/main.go
+++ b/main.go
@ -1,6 +1,162 @@
 package main

+import (
+	"context"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"os/signal"
+	"strings"
+	"syscall"
+
+	cli "github.com/urfave/cli/v2"
+
+	"github.com/sorenisanerd/gotty/backend/localcommand"
+	"github.com/sorenisanerd/gotty/pkg/homedir"
+	"github.com/sorenisanerd/gotty/server"
+	"github.com/sorenisanerd/gotty/utils"
+)

 func main() {
-	fmt.Println("Deprecated. Use v1")
+	app := cli.NewApp()
+	app.Name = "gotty"
+	app.Version = Version
+	app.Usage = "Share your terminal as a web application"
+	app.HideHelpCommand = true
+	appOptions := &server.Options{}
+
+	if err := utils.ApplyDefaultValues(appOptions); err != nil {
+		exit(err, 1)
+	}
+	backendOptions := &localcommand.Options{}
+	if err := utils.ApplyDefaultValues(backendOptions); err != nil {
+		exit(err, 1)
+	}
+
+	cliFlags, flagMappings, err := utils.GenerateFlags(appOptions, backendOptions)
+	if err != nil {
+		exit(err, 3)
+	}
+
+	app.Flags = append(
+		cliFlags,
+		&cli.StringFlag{
+			Name:    "config",
+			Value:   "~/.gotty",
+			Usage:   "Config file path",
+			EnvVars: []string{"GOTTY_CONFIG"},
+		},
+	)
+
+	app.Action = func(c *cli.Context) error {
+		if c.NArg() == 0 {
+			msg := "Error: No command given."
+			cli.ShowAppHelp(c)
+			exit(fmt.Errorf(msg), 1)
+		}
+
+		configFile := c.String("config")
+		_, err := os.Stat(homedir.Expand(configFile))
+		if configFile != "~/.gotty" || !os.IsNotExist(err) {
+			if err := utils.ApplyConfigFile(configFile, appOptions, backendOptions); err != nil {
+				exit(err, 2)
+			}
+		}
+
+		utils.ApplyFlags(cliFlags, flagMappings, c, appOptions, backendOptions)
+
+		if appOptions.Quiet {
+			log.SetFlags(0)
+			log.SetOutput(io.Discard)
+		}
+
+		if c.IsSet("credential") {
+			appOptions.EnableBasicAuth = true
+		}
+		if c.IsSet("tls-ca-crt") {
+			appOptions.EnableTLSClientAuth = true
+		}
+
+		err = appOptions.Validate()
+		if err != nil {
+			exit(err, 6)
+		}
+
+		args := c.Args()
+		factory, err := localcommand.NewFactory(args.First(), args.Tail(), backendOptions)
+		if err != nil {
+			exit(err, 3)
+		}
+
+		hostname, _ := os.Hostname()
+		appOptions.TitleVariables = map[string]interface{}{
+			"command":  args.First(),
+			"argv":     args.Tail(),
+			"hostname": hostname,
+		}
+
+		srv, err := server.New(factory, appOptions)
+		if err != nil {
+			exit(err, 3)
+		}
+
+		ctx, cancel := context.WithCancel(context.Background())
+		gCtx, gCancel := context.WithCancel(context.Background())
+
+		log.Printf("GoTTY is starting with command: %s", strings.Join(args.Slice(), " "))
+
+		errs := make(chan error, 1)
+		go func() {
+			errs <- srv.Run(ctx, server.WithGracefullContext(gCtx))
+		}()
+		err = waitSignals(errs, cancel, gCancel)
+
+		if err != nil && err != context.Canceled {
+			fmt.Printf("Error: %s\n", err)
+			exit(err, 8)
+		}
+
+		return nil
+	}
+	app.Run(os.Args)
+}
+
+func exit(err error, code int) {
+	if err != nil {
+		fmt.Println(err)
+	}
+	os.Exit(code)
+}
+
+func waitSignals(errs chan error, cancel context.CancelFunc, gracefullCancel context.CancelFunc) error {
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(
+		sigChan,
+		syscall.SIGINT,
+		syscall.SIGTERM,
+	)
+
+	select {
+	case err := <-errs:
+		return err
+
+	case s := <-sigChan:
+		switch s {
+		case syscall.SIGINT:
+			gracefullCancel()
+			fmt.Println("C-C to force close")
+			select {
+			case err := <-errs:
+				return err
+			case <-sigChan:
+				fmt.Println("Force closing...")
+				cancel()
+				return <-errs
+			}
+		default:
+			cancel()
+			return <-errs
+		}
+	}
 }
--- a/pkg/homedir/expand.go
+++ b/pkg/homedir/expand.go
@ -0,0 +1,13 @@
+package homedir
+
+import (
+	"os"
+)
+
+func Expand(path string) string {
+	if path[0:2] == "~/" {
+		return os.Getenv("HOME") + path[1:]
+	} else {
+		return path
+	}
+}
--- a/pkg/randomstring/generate.go
+++ b/pkg/randomstring/generate.go
@ -0,0 +1,18 @@
+package randomstring
+
+import (
+	"crypto/rand"
+	"math/big"
+	"strconv"
+)
+
+func Generate(length int) string {
+	const base = 36
+	size := big.NewInt(base)
+	n := make([]byte, length)
+	for i, _ := range n {
+		c, _ := rand.Int(rand.Reader, size)
+		n[i] = strconv.FormatInt(c.Int64(), base)[0]
+	}
+	return string(n)
+}
--- a/release-checklist.md
+++ b/release-checklist.md
@ -0,0 +1,8 @@
+ * Check that the build works, duh.
+   * Check that "gotty bash" works and that it does not accept input.
+   * Check that "gotty -w bash" works and that it DOES accept input.
+   * Check that "gotty -w bash" works and that it DOES accept input.
+ * Check that cross-compilation works.
+ * Ensure NEWS is up-to-date
+ * Ensure contributor list is up-to-date
+ * Ensure usage is correct in Makefile
--- a/resources/favicon.ico
+++ b/resources/favicon.ico
--- a/resources/icon.svg
+++ b/resources/icon.svg
@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   viewBox="0 0 708.4149 708.41411"
+   height="708.41412"
+   width="708.41492"
+   xml:space="preserve"
+   id="svg2"
+   version="1.1"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6"><clipPath
+       id="clipPath18"
+       clipPathUnits="userSpaceOnUse"><path
+         id="path16"
+         d="M 0,2000 H 2000 V 0 H 0 Z" /></clipPath></defs><g
+     transform="matrix(1.3333333,0,0,-1.3333333,-979.12558,1687.5405)"
+     id="g10"><g
+       id="g12"><g
+         clip-path="url(#clipPath18)"
+         id="g14"><g
+           transform="translate(772.1414,1265.6554)"
+           id="g20"><path
+             id="path22"
+             style="fill:#de3c28;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             d="m 0,0 c -20.875,0 -37.797,-16.922 -37.797,-37.797 v -126.348 -25.917 -212.342 L 345.882,0 Z" /></g><g
+           transform="translate(956.8504,734.3448)"
+           id="g24"><path
+             id="path26"
+             style="fill:#af1419;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             d="m 0,0 h 260.209 c 26.839,0 48.596,21.757 48.596,48.596 v 275.281 z" /></g><g
+           transform="translate(1265.6552,1075.5929)"
+           id="g28"><path
+             id="path30"
+             style="fill:#db0918;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             d="m 0,0 v 25.918 126.348 c 0,20.875 -16.922,37.796 -37.796,37.796 h -109.836 l -383.679,-402.404 v -80.31 c 0,-26.839 21.757,-48.596 48.596,-48.596 h 173.91 L 0,-17.371 Z" /></g><g
+           transform="translate(1169.2147,909.6954)"
+           id="g32"><path
+             id="path34"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             d="m 0,0 h -138.227 c -9.129,0 -16.528,7.4 -16.528,16.529 0,9.128 7.399,16.529 16.528,16.529 H 0 c 9.129,0 16.528,-7.401 16.528,-16.529 C 16.528,7.4 9.129,0 0,0" /></g><g
+           transform="translate(898.8318,1033.5314)"
+           id="g36"><path
+             id="path38"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             d="m 0,0 c 2.86,-0.72 5.65,-1.45 8.37,-2.2 -0.63,-8.56 -7.76,-15.3 -16.479,-15.3 -9.13,0 -16.531,7.4 -16.531,16.53 v 8.54 c 1.861,-0.83 3.72,-1.549 5.601,-2.15 C -15.199,4.18 -8.85,2.37 0,0" /></g><g
+           transform="translate(907.2527,1150.7814)"
+           id="g40"><path
+             id="path42"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             d="m 0,0 v -65.81 c -4.45,1.59 -9.98,2.38 -16.601,2.38 -6.21,0 -11.7,-0.88 -16.46,-2.64 V 0 c 0,9.13 7.401,16.53 16.531,16.53 C -7.4,16.53 0,9.13 0,0" /></g><g
+           transform="translate(874.1922,868.8272)"
+           id="g44"><path
+             id="path46"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
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+           transform="translate(966.6326,994.1915)"
+           id="g48"><path
+             id="path50"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
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--- a/resources/icon_192.png
+++ b/resources/icon_192.png
--- a/resources/index.css
+++ b/resources/index.css
@ -0,0 +1,13 @@
+html, body, #terminal {
+    background: black;
+    height: 100%;
+    width: 100%;
+    padding: 0%;
+    margin: 0%;
+}
+
+.progress .progress-bar {
+  transition: unset;
+  transition-duration: 0.1s;
+  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
+}
--- a/resources/index.html
+++ b/resources/index.html
@ -0,0 +1,22 @@
+<!doctype html>
+<html>
+
+<head>
+  <title>{{ .title }}</title>
+  <link rel="manifest" href="manifest.json" crossorigin="use-credentials">
+  <link rel="icon" href="favicon.ico">
+  <link rel="icon" href="icon.svg" type="image/svg+xml">
+  <link rel="stylesheet" href="./css/index.css" />
+  <link rel="stylesheet" href="./css/xterm.css" />
+  <link rel="stylesheet" href="./css/xterm_customize.css" />
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+</head>
+
+<body>
+  <div id="terminal"></div>
+  <script src="./auth_token.js"></script>
+  <script src="./config.js"></script>
+  <script src="./js/gotty.js"></script>
+</body>
+
+</html>
--- a/resources/manifest.json
+++ b/resources/manifest.json
@ -0,0 +1,15 @@
+{
+  "short_name": "{{ .title }}",
+  "name": "{{ .title }}",
+  "start_url": "./",
+  "icons": [
+    {
+      "src": "./icon_192.png",
+      "type": "image/png",
+      "sizes": "192x192"
+    }
+  ],
+  "display": "minimal-ui",
+  "theme_color": "#000000",
+  "background_color": "#000000"
+}
--- a/resources/xterm_customize.css
+++ b/resources/xterm_customize.css
@ -0,0 +1,19 @@
+.terminal {
+    font-family: "DejaVu Sans Mono", "Everson Mono", FreeMono, Menlo, Terminal, monospace, "Apple Symbols";
+}
+
+.xterm-overlay {
+    font-family: "DejaVu Sans Mono", "Everson Mono", FreeMono, Menlo, Terminal, monospace, "Apple Symbols";
+    border-radius: 15px;
+    font-size: xx-large;
+    color: black;
+    background: white;
+    opacity: 0.75;
+    padding: 0.2em 0.5em 0.2em 0.5em;
+    position: absolute;
+    top: 50%;
+    left: 50%;
+    transform: translate(-50%, -50%);
+    user-select: none;
+    transition: opacity 180ms ease-in;
+}
--- a/screenshot.gif
+++ b/screenshot.gif
--- a/server/handler_atomic.go
+++ b/server/handler_atomic.go
@ -0,0 +1,70 @@
+package server
+
+import (
+	"sync"
+	"time"
+)
+
+type counter struct {
+	duration    time.Duration
+	zeroTimer   *time.Timer
+	wg          sync.WaitGroup
+	connections int
+	mutex       sync.Mutex
+}
+
+func newCounter(duration time.Duration) *counter {
+	zeroTimer := time.NewTimer(duration)
+
+	// when duration is 0, drain the expire event here
+	// so that user will never get the event.
+	if duration == 0 {
+		<-zeroTimer.C
+	}
+
+	return &counter{
+		duration:  duration,
+		zeroTimer: zeroTimer,
+	}
+}
+
+func (counter *counter) add(n int) int {
+	counter.mutex.Lock()
+	defer counter.mutex.Unlock()
+
+	if counter.duration > 0 {
+		counter.zeroTimer.Stop()
+	}
+	counter.wg.Add(n)
+	counter.connections += n
+
+	return counter.connections
+}
+
+func (counter *counter) done() int {
+	counter.mutex.Lock()
+	defer counter.mutex.Unlock()
+
+	counter.connections--
+	counter.wg.Done()
+	if counter.connections == 0 && counter.duration > 0 {
+		counter.zeroTimer.Reset(counter.duration)
+	}
+
+	return counter.connections
+}
+
+func (counter *counter) count() int {
+	counter.mutex.Lock()
+	defer counter.mutex.Unlock()
+
+	return counter.connections
+}
+
+func (counter *counter) wait() {
+	counter.wg.Wait()
+}
+
+func (counter *counter) timer() *time.Timer {
+	return counter.zeroTimer
+}
--- a/server/handlers.go
+++ b/server/handlers.go
@ -0,0 +1,266 @@
+package server
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"net/url"
+	"strings"
+	"sync/atomic"
+
+	"github.com/gorilla/websocket"
+	"github.com/pkg/errors"
+
+	"github.com/sorenisanerd/gotty/webtty"
+)
+
+func (server *Server) generateHandleWS(ctx context.Context, cancel context.CancelFunc, counter *counter) http.HandlerFunc {
+	once := new(int64)
+
+	go func() {
+		select {
+		case <-counter.timer().C:
+			cancel()
+		case <-ctx.Done():
+		}
+	}()
+
+	return func(w http.ResponseWriter, r *http.Request) {
+		if server.options.Once {
+			success := atomic.CompareAndSwapInt64(once, 0, 1)
+			if !success {
+				http.Error(w, "Server is shutting down", http.StatusServiceUnavailable)
+				return
+			}
+		}
+
+		num := counter.add(1)
+		closeReason := "unknown reason"
+
+		defer func() {
+			num := counter.done()
+			log.Printf(
+				"Connection closed by %s: %s, connections: %d/%d",
+				closeReason, r.RemoteAddr, num, server.options.MaxConnection,
+			)
+
+			if server.options.Once {
+				cancel()
+			}
+		}()
+
+		if int64(server.options.MaxConnection) != 0 {
+			if num > server.options.MaxConnection {
+				closeReason = "exceeding max number of connections"
+				return
+			}
+		}
+
+		log.Printf("New client connected: %s, connections: %d/%d", r.RemoteAddr, num, server.options.MaxConnection)
+
+		if r.Method != "GET" {
+			http.Error(w, "Method not allowed", 405)
+			return
+		}
+
+		conn, err := server.upgrader.Upgrade(w, r, nil)
+		if err != nil {
+			closeReason = err.Error()
+			return
+		}
+		defer conn.Close()
+
+		if server.options.PassHeaders {
+			err = server.processWSConn(ctx, conn, r.Header)
+		} else {
+			err = server.processWSConn(ctx, conn, nil)
+		}
+
+		switch err {
+		case ctx.Err():
+			closeReason = "cancelation"
+		case webtty.ErrSlaveClosed:
+			closeReason = server.factory.Name()
+		case webtty.ErrMasterClosed:
+			closeReason = "client"
+		default:
+			closeReason = fmt.Sprintf("an error: %s", err)
+		}
+	}
+}
+
+func (server *Server) processWSConn(ctx context.Context, conn *websocket.Conn, headers map[string][]string) error {
+	typ, initLine, err := conn.ReadMessage()
+	if err != nil {
+		return errors.Wrapf(err, "failed to authenticate websocket connection")
+	}
+	if typ != websocket.TextMessage {
+		return errors.New("failed to authenticate websocket connection: invalid message type")
+	}
+
+	var init InitMessage
+	err = json.Unmarshal(initLine, &init)
+	if err != nil {
+		return errors.Wrapf(err, "failed to authenticate websocket connection")
+	}
+	if init.AuthToken != server.options.Credential {
+		return errors.New("failed to authenticate websocket connection")
+	}
+
+	queryPath := "?"
+	if server.options.PermitArguments && init.Arguments != "" {
+		queryPath = init.Arguments
+	}
+
+	query, err := url.Parse(queryPath)
+	if err != nil {
+		return errors.Wrapf(err, "failed to parse arguments")
+	}
+	params := query.Query()
+	var slave Slave
+	slave, err = server.factory.New(params, headers)
+	if err != nil {
+		return errors.Wrapf(err, "failed to create backend")
+	}
+	defer slave.Close()
+
+	titleVars := server.titleVariables(
+		[]string{"server", "master", "slave"},
+		map[string]map[string]interface{}{
+			"server": server.options.TitleVariables,
+			"master": map[string]interface{}{
+				"remote_addr": conn.RemoteAddr(),
+			},
+			"slave": slave.WindowTitleVariables(),
+		},
+	)
+
+	titleBuf := new(bytes.Buffer)
+	err = server.titleTemplate.Execute(titleBuf, titleVars)
+	if err != nil {
+		return errors.Wrapf(err, "failed to fill window title template")
+	}
+
+	opts := []webtty.Option{
+		webtty.WithWindowTitle(titleBuf.Bytes()),
+	}
+	if server.options.PermitWrite {
+		opts = append(opts, webtty.WithPermitWrite())
+	}
+	if server.options.EnableReconnect {
+		opts = append(opts, webtty.WithReconnect(server.options.ReconnectTime))
+	}
+	if server.options.Width > 0 {
+		opts = append(opts, webtty.WithFixedColumns(server.options.Width))
+	}
+	if server.options.Height > 0 {
+		opts = append(opts, webtty.WithFixedRows(server.options.Height))
+	}
+	tty, err := webtty.New(&wsWrapper{conn}, slave, opts...)
+	if err != nil {
+		return errors.Wrapf(err, "failed to create webtty")
+	}
+
+	err = tty.Run(ctx)
+
+	return err
+}
+
+func (server *Server) handleIndex(w http.ResponseWriter, r *http.Request) {
+	indexVars, err := server.indexVariables(r)
+	if err != nil {
+		http.Error(w, "Internal Server Error", 500)
+		return
+	}
+
+	indexBuf := new(bytes.Buffer)
+	err = server.indexTemplate.Execute(indexBuf, indexVars)
+	if err != nil {
+		http.Error(w, "Internal Server Error", 500)
+		return
+	}
+
+	w.Write(indexBuf.Bytes())
+}
+
+func (server *Server) handleManifest(w http.ResponseWriter, r *http.Request) {
+	indexVars, err := server.indexVariables(r)
+	if err != nil {
+		http.Error(w, "Internal Server Error", 500)
+		return
+	}
+
+	indexBuf := new(bytes.Buffer)
+	err = server.manifestTemplate.Execute(indexBuf, indexVars)
+	if err != nil {
+		http.Error(w, "Internal Server Error", 500)
+		return
+	}
+
+	w.Write(indexBuf.Bytes())
+}
+
+func (server *Server) indexVariables(r *http.Request) (map[string]interface{}, error) {
+	titleVars := server.titleVariables(
+		[]string{"server", "master"},
+		map[string]map[string]interface{}{
+			"server": server.options.TitleVariables,
+			"master": map[string]interface{}{
+				"remote_addr": r.RemoteAddr,
+			},
+		},
+	)
+
+	titleBuf := new(bytes.Buffer)
+	err := server.titleTemplate.Execute(titleBuf, titleVars)
+	if err != nil {
+		return nil, err
+	}
+
+	indexVars := map[string]interface{}{
+		"title": titleBuf.String(),
+	}
+	return indexVars, err
+}
+
+func (server *Server) handleAuthToken(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/javascript")
+	// @TODO hashing?
+	w.Write([]byte("var gotty_auth_token = '" + server.options.Credential + "';"))
+}
+
+func (server *Server) handleConfig(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/javascript")
+	lines := []string{
+		"var gotty_term = 'xterm';",
+		"var gotty_ws_query_args = '" + server.options.WSQueryArgs + "';",
+	}
+
+	w.Write([]byte(strings.Join(lines, "\n")))
+}
+
+// titleVariables merges maps in a specified order.
+// varUnits are name-keyed maps, whose names will be iterated using order.
+func (server *Server) titleVariables(order []string, varUnits map[string]map[string]interface{}) map[string]interface{} {
+	titleVars := map[string]interface{}{}
+
+	for _, name := range order {
+		vars, ok := varUnits[name]
+		if !ok {
+			panic("title variable name error")
+		}
+		for key, val := range vars {
+			titleVars[key] = val
+		}
+	}
+
+	// safe net for conflicted keys
+	for _, name := range order {
+		titleVars[name] = varUnits[name]
+	}
+
+	return titleVars
+}
--- a/server/init_message.go
+++ b/server/init_message.go
@ -0,0 +1,6 @@
+package server
+
+type InitMessage struct {
+	Arguments string `json:"Arguments,omitempty"`
+	AuthToken string `json:"AuthToken,omitempty"`
+}
--- a/server/list_address.go
+++ b/server/list_address.go
@ -0,0 +1,28 @@
+package server
+
+import (
+	"net"
+)
+
+func listAddresses() (addresses []string) {
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return []string{}
+	}
+
+	addresses = make([]string, 0, len(ifaces))
+
+	for _, iface := range ifaces {
+		ifAddrs, _ := iface.Addrs()
+		for _, ifAddr := range ifAddrs {
+			switch v := ifAddr.(type) {
+			case *net.IPNet:
+				addresses = append(addresses, v.IP.String())
+			case *net.IPAddr:
+				addresses = append(addresses, v.IP.String())
+			}
+		}
+	}
+
+	return addresses
+}
--- a/server/log_response_writer.go
+++ b/server/log_response_writer.go
@ -0,0 +1,23 @@
+package server
+
+import (
+	"bufio"
+	"net"
+	"net/http"
+)
+
+type logResponseWriter struct {
+	http.ResponseWriter
+	status int
+}
+
+func (w *logResponseWriter) WriteHeader(status int) {
+	w.status = status
+	w.ResponseWriter.WriteHeader(status)
+}
+
+func (w *logResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
+	hj, _ := w.ResponseWriter.(http.Hijacker)
+	w.status = http.StatusSwitchingProtocols
+	return hj.Hijack()
+}
--- a/server/middleware.go
+++ b/server/middleware.go
@ -0,0 +1,51 @@
+package server
+
+import (
+	"encoding/base64"
+	"log"
+	"net/http"
+	"strings"
+)
+
+func (server *Server) wrapLogger(handler http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		rw := &logResponseWriter{w, 200}
+		handler.ServeHTTP(rw, r)
+		log.Printf("%s %d %s %s", r.RemoteAddr, rw.status, r.Method, r.URL.Path)
+	})
+}
+
+func (server *Server) wrapHeaders(handler http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// todo add version
+		w.Header().Set("Server", "GoTTY")
+		handler.ServeHTTP(w, r)
+	})
+}
+
+func (server *Server) wrapBasicAuth(handler http.Handler, credential string) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		token := strings.SplitN(r.Header.Get("Authorization"), " ", 2)
+
+		if len(token) != 2 || strings.ToLower(token[0]) != "basic" {
+			w.Header().Set("WWW-Authenticate", `Basic realm="GoTTY"`)
+			http.Error(w, "Bad Request", http.StatusUnauthorized)
+			return
+		}
+
+		payload, err := base64.StdEncoding.DecodeString(token[1])
+		if err != nil {
+			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
+			return
+		}
+
+		if credential != string(payload) {
+			w.Header().Set("WWW-Authenticate", `Basic realm="GoTTY"`)
+			http.Error(w, "authorization failed", http.StatusUnauthorized)
+			return
+		}
+
+		log.Printf("Basic Authentication Succeeded: %s", r.RemoteAddr)
+		handler.ServeHTTP(w, r)
+	})
+}
--- a/server/options.go
+++ b/server/options.go
@ -0,0 +1,45 @@
+package server
+
+import (
+	"github.com/pkg/errors"
+)
+
+type Options struct {
+	Address             string `hcl:"address" flagName:"address" flagSName:"a" flagDescribe:"IP address to listen" default:"0.0.0.0"`
+	Port                string `hcl:"port" flagName:"port" flagSName:"p" flagDescribe:"Port number to liten" default:"8080"`
+	Path                string `hcl:"path" flagName:"path" flagSName:"m" flagDescribe:"Base path" default:"/"`
+	PermitWrite         bool   `hcl:"permit_write" flagName:"permit-write" flagSName:"w" flagDescribe:"Permit clients to write to the TTY (BE CAREFUL)" default:"false"`
+	EnableBasicAuth     bool   `hcl:"enable_basic_auth" default:"false"`
+	Credential          string `hcl:"credential" flagName:"credential" flagSName:"c" flagDescribe:"Credential for Basic Authentication (ex: user:pass, default disabled)" default:""`
+	EnableRandomUrl     bool   `hcl:"enable_random_url" flagName:"random-url" flagSName:"r" flagDescribe:"Add a random string to the URL" default:"false"`
+	RandomUrlLength     int    `hcl:"random_url_length" flagName:"random-url-length" flagDescribe:"Random URL length" default:"8"`
+	EnableTLS           bool   `hcl:"enable_tls" flagName:"tls" flagSName:"t" flagDescribe:"Enable TLS/SSL" default:"false"`
+	TLSCrtFile          string `hcl:"tls_crt_file" flagName:"tls-crt" flagDescribe:"TLS/SSL certificate file path" default:"~/.gotty.crt"`
+	TLSKeyFile          string `hcl:"tls_key_file" flagName:"tls-key" flagDescribe:"TLS/SSL key file path" default:"~/.gotty.key"`
+	EnableTLSClientAuth bool   `hcl:"enable_tls_client_auth" default:"false"`
+	TLSCACrtFile        string `hcl:"tls_ca_crt_file" flagName:"tls-ca-crt" flagDescribe:"TLS/SSL CA certificate file for client certifications" default:"~/.gotty.ca.crt"`
+	IndexFile           string `hcl:"index_file" flagName:"index" flagDescribe:"Custom index.html file" default:""`
+	TitleFormat         string `hcl:"title_format" flagName:"title-format" flagSName:"" flagDescribe:"Title format of browser window" default:"{{ .command }}@{{ .hostname }}"`
+	EnableReconnect     bool   `hcl:"enable_reconnect" flagName:"reconnect" flagDescribe:"Enable reconnection" default:"false"`
+	ReconnectTime       int    `hcl:"reconnect_time" flagName:"reconnect-time" flagDescribe:"Time to reconnect" default:"10"`
+	MaxConnection       int    `hcl:"max_connection" flagName:"max-connection" flagDescribe:"Maximum connection to gotty" default:"0"`
+	Once                bool   `hcl:"once" flagName:"once" flagDescribe:"Accept only one client and exit on disconnection" default:"false"`
+	Timeout             int    `hcl:"timeout" flagName:"timeout" flagDescribe:"Timeout seconds for waiting a client(0 to disable)" default:"0"`
+	PermitArguments     bool   `hcl:"permit_arguments" flagName:"permit-arguments" flagDescribe:"Permit clients to send command line arguments in URL (e.g. http://example.com:8080/?arg=AAA&arg=BBB)" default:"false"`
+	PassHeaders         bool   `hcl:"pass_headers" flagName:"pass-headers" flagDescribe:"Pass HTTP request headers as environment variables (e.g. Cookie becomes HTTP_COOKIE)" default:"false"`
+	Width               int    `hcl:"width" flagName:"width" flagDescribe:"Static width of the screen, 0(default) means dynamically resize" default:"0"`
+	Height              int    `hcl:"height" flagName:"height" flagDescribe:"Static height of the screen, 0(default) means dynamically resize" default:"0"`
+	WSOrigin            string `hcl:"ws_origin" flagName:"ws-origin" flagDescribe:"A regular expression that matches origin URLs to be accepted by WebSocket. No cross origin requests are acceptable by default" default:""`
+	WSQueryArgs         string `hcl:"ws_query_args" flagName:"ws-query-args" flagDescribe:"Querystring arguments to append to the websocket instantiation" default:""`
+	EnableWebGL         bool   `hcl:"enable_webgl" flagName:"enable-webgl" flagDescribe:"Enable WebGL renderer" default:"true"`
+	Quiet               bool   `hcl:"quiet" flagName:"quiet" flagDescribe:"Don't log" default:"false"`
+
+	TitleVariables map[string]interface{}
+}
+
+func (options *Options) Validate() error {
+	if options.EnableTLSClientAuth && !options.EnableTLS {
+		return errors.New("TLS client authentication is enabled, but TLS is not enabled")
+	}
+	return nil
+}
--- a/server/run_option.go
+++ b/server/run_option.go
@ -0,0 +1,21 @@
+package server
+
+import (
+	"context"
+)
+
+// RunOptions holds a set of configurations for Server.Run().
+type RunOptions struct {
+	gracefullCtx context.Context
+}
+
+// RunOption is an option of Server.Run().
+type RunOption func(*RunOptions)
+
+// WithGracefullContext accepts a context to shutdown a Server
+// with care for existing client connections.
+func WithGracefullContext(ctx context.Context) RunOption {
+	return func(options *RunOptions) {
+		options.gracefullCtx = ctx
+	}
+}
--- a/server/server.go
+++ b/server/server.go
@ -0,0 +1,269 @@
+package server
+
+import (
+	"context"
+	"crypto/tls"
+	"crypto/x509"
+	"html/template"
+	"io/fs"
+	"log"
+	"net"
+	"net/http"
+	"os"
+	"regexp"
+	"strings"
+	noesctmpl "text/template"
+	"time"
+
+	"github.com/NYTimes/gziphandler"
+	"github.com/gorilla/websocket"
+	"github.com/pkg/errors"
+
+	"github.com/sorenisanerd/gotty/bindata"
+	"github.com/sorenisanerd/gotty/pkg/homedir"
+	"github.com/sorenisanerd/gotty/pkg/randomstring"
+	"github.com/sorenisanerd/gotty/webtty"
+)
+
+// Server provides a webtty HTTP endpoint.
+type Server struct {
+	factory Factory
+	options *Options
+
+	upgrader         *websocket.Upgrader
+	indexTemplate    *template.Template
+	titleTemplate    *noesctmpl.Template
+	manifestTemplate *template.Template
+}
+
+// New creates a new instance of Server.
+// Server will use the New() of the factory provided to handle each request.
+func New(factory Factory, options *Options) (*Server, error) {
+	indexData, err := bindata.Fs.ReadFile("static/index.html")
+	if err != nil {
+		panic("index not found") // must be in bindata
+	}
+	if options.IndexFile != "" {
+		path := homedir.Expand(options.IndexFile)
+		indexData, err = os.ReadFile(path)
+		if err != nil {
+			return nil, errors.Wrapf(err, "failed to read custom index file at `%s`", path)
+		}
+	}
+	indexTemplate, err := template.New("index").Parse(string(indexData))
+	if err != nil {
+		panic("index template parse failed") // must be valid
+	}
+
+	manifestData, err := bindata.Fs.ReadFile("static/manifest.json")
+	if err != nil {
+		panic("manifest not found") // must be in bindata
+	}
+	manifestTemplate, err := template.New("manifest").Parse(string(manifestData))
+	if err != nil {
+		panic("manifest template parse failed") // must be valid
+	}
+
+	titleTemplate, err := noesctmpl.New("title").Parse(options.TitleFormat)
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to parse window title format `%s`", options.TitleFormat)
+	}
+
+	var originChekcer func(r *http.Request) bool
+	if options.WSOrigin != "" {
+		matcher, err := regexp.Compile(options.WSOrigin)
+		if err != nil {
+			return nil, errors.Wrapf(err, "failed to compile regular expression of Websocket Origin: %s", options.WSOrigin)
+		}
+		originChekcer = func(r *http.Request) bool {
+			return matcher.MatchString(r.Header.Get("Origin"))
+		}
+	}
+
+	return &Server{
+		factory: factory,
+		options: options,
+
+		upgrader: &websocket.Upgrader{
+			ReadBufferSize:  1024,
+			WriteBufferSize: 1024,
+			Subprotocols:    webtty.Protocols,
+			CheckOrigin:     originChekcer,
+		},
+		indexTemplate:    indexTemplate,
+		titleTemplate:    titleTemplate,
+		manifestTemplate: manifestTemplate,
+	}, nil
+}
+
+// Run starts the main process of the Server.
+// The cancelation of ctx will shutdown the server immediately with aborting
+// existing connections. Use WithGracefullContext() to support gracefull shutdown.
+func (server *Server) Run(ctx context.Context, options ...RunOption) error {
+	cctx, cancel := context.WithCancel(ctx)
+	opts := &RunOptions{gracefullCtx: context.Background()}
+	for _, opt := range options {
+		opt(opts)
+	}
+
+	counter := newCounter(time.Duration(server.options.Timeout) * time.Second)
+
+	path := server.options.Path
+	if server.options.EnableRandomUrl {
+		path = "/" + randomstring.Generate(server.options.RandomUrlLength) + "/"
+	}
+	if !strings.HasPrefix(path, "/") {
+		path = "/" + path
+	}
+	if !strings.HasSuffix(path, "/") {
+		path = path + "/"
+	}
+	handlers := server.setupHandlers(cctx, cancel, path, counter)
+	srv, err := server.setupHTTPServer(handlers)
+	if err != nil {
+		return errors.Wrapf(err, "failed to setup an HTTP server")
+	}
+
+	if server.options.PermitWrite {
+		log.Printf("Permitting clients to write input to the PTY.")
+	}
+	if server.options.Once {
+		log.Printf("Once option is provided, accepting only one client")
+	}
+
+	if server.options.Port == "0" {
+		log.Printf("Port number configured to `0`, choosing a random port")
+	}
+	hostPort := net.JoinHostPort(server.options.Address, server.options.Port)
+	listener, err := net.Listen("tcp", hostPort)
+	if err != nil {
+		return errors.Wrapf(err, "failed to listen at `%s`", hostPort)
+	}
+
+	scheme := "http"
+	if server.options.EnableTLS {
+		scheme = "https"
+	}
+	host, port, _ := net.SplitHostPort(listener.Addr().String())
+	log.Printf("HTTP server is listening at: %s", scheme+"://"+net.JoinHostPort(host, port)+path)
+	if server.options.Address == "0.0.0.0" {
+		for _, address := range listAddresses() {
+			log.Printf("Alternative URL: %s", scheme+"://"+net.JoinHostPort(address, port)+path)
+		}
+	}
+
+	srvErr := make(chan error, 1)
+	go func() {
+		if server.options.EnableTLS {
+			crtFile := homedir.Expand(server.options.TLSCrtFile)
+			keyFile := homedir.Expand(server.options.TLSKeyFile)
+			log.Printf("TLS crt file: " + crtFile)
+			log.Printf("TLS key file: " + keyFile)
+
+			err = srv.ServeTLS(listener, crtFile, keyFile)
+		} else {
+			err = srv.Serve(listener)
+		}
+		if err != nil {
+			srvErr <- err
+		}
+	}()
+
+	go func() {
+		select {
+		case <-opts.gracefullCtx.Done():
+			srv.Shutdown(context.Background())
+		case <-cctx.Done():
+		}
+	}()
+
+	select {
+	case err = <-srvErr:
+		if err == http.ErrServerClosed { // by gracefull ctx
+			err = nil
+		} else {
+			cancel()
+		}
+	case <-cctx.Done():
+		srv.Close()
+		err = cctx.Err()
+	}
+
+	conn := counter.count()
+	if conn > 0 {
+		log.Printf("Waiting for %d connections to be closed", conn)
+	}
+	counter.wait()
+
+	return err
+}
+
+func (server *Server) setupHandlers(ctx context.Context, cancel context.CancelFunc, pathPrefix string, counter *counter) http.Handler {
+	fs, err := fs.Sub(bindata.Fs, "static")
+	if err != nil {
+		log.Fatalf("failed to open static/ subdirectory of embedded filesystem: %v", err)
+	}
+	staticFileHandler := http.FileServer(http.FS(fs))
+
+	var siteMux = http.NewServeMux()
+	siteMux.HandleFunc(pathPrefix, server.handleIndex)
+	siteMux.Handle(pathPrefix+"js/", http.StripPrefix(pathPrefix, staticFileHandler))
+	siteMux.Handle(pathPrefix+"favicon.ico", http.StripPrefix(pathPrefix, staticFileHandler))
+	siteMux.Handle(pathPrefix+"icon.svg", http.StripPrefix(pathPrefix, staticFileHandler))
+	siteMux.Handle(pathPrefix+"css/", http.StripPrefix(pathPrefix, staticFileHandler))
+	siteMux.Handle(pathPrefix+"icon_192.png", http.StripPrefix(pathPrefix, staticFileHandler))
+
+	siteMux.HandleFunc(pathPrefix+"manifest.json", server.handleManifest)
+	siteMux.HandleFunc(pathPrefix+"auth_token.js", server.handleAuthToken)
+	siteMux.HandleFunc(pathPrefix+"config.js", server.handleConfig)
+
+	siteHandler := http.Handler(siteMux)
+
+	if server.options.EnableBasicAuth {
+		log.Printf("Using Basic Authentication")
+		siteHandler = server.wrapBasicAuth(siteHandler, server.options.Credential)
+	}
+
+	withGz := gziphandler.GzipHandler(server.wrapHeaders(siteHandler))
+	siteHandler = server.wrapLogger(withGz)
+
+	wsMux := http.NewServeMux()
+	wsMux.Handle("/", siteHandler)
+	wsMux.HandleFunc(pathPrefix+"ws", server.generateHandleWS(ctx, cancel, counter))
+	siteHandler = http.Handler(wsMux)
+
+	return siteHandler
+}
+
+func (server *Server) setupHTTPServer(handler http.Handler) (*http.Server, error) {
+	srv := &http.Server{
+		Handler: handler,
+	}
+
+	if server.options.EnableTLSClientAuth {
+		tlsConfig, err := server.tlsConfig()
+		if err != nil {
+			return nil, errors.Wrapf(err, "failed to setup TLS configuration")
+		}
+		srv.TLSConfig = tlsConfig
+	}
+
+	return srv, nil
+}
+
+func (server *Server) tlsConfig() (*tls.Config, error) {
+	caFile := homedir.Expand(server.options.TLSCACrtFile)
+	caCert, err := os.ReadFile(caFile)
+	if err != nil {
+		return nil, errors.New("could not open CA crt file " + caFile)
+	}
+	caCertPool := x509.NewCertPool()
+	if !caCertPool.AppendCertsFromPEM(caCert) {
+		return nil, errors.New("could not parse CA crt file data in " + caFile)
+	}
+	tlsConfig := &tls.Config{
+		ClientCAs:  caCertPool,
+		ClientAuth: tls.RequireAndVerifyClientCert,
+	}
+	return tlsConfig, nil
+}
--- a/server/slave.go
+++ b/server/slave.go
@ -0,0 +1,17 @@
+package server
+
+import (
+	"github.com/sorenisanerd/gotty/webtty"
+)
+
+// Slave is webtty.Slave with some additional methods.
+type Slave interface {
+	webtty.Slave
+
+	Close() error
+}
+
+type Factory interface {
+	Name() string
+	New(params map[string][]string, headers map[string][]string) (Slave, error)
+}
--- a/server/ws_wrapper.go
+++ b/server/ws_wrapper.go
@ -0,0 +1,41 @@
+package server
+
+import (
+	"io"
+
+	"github.com/gorilla/websocket"
+	"github.com/pkg/errors"
+)
+
+type wsWrapper struct {
+	*websocket.Conn
+}
+
+func (wsw *wsWrapper) Write(p []byte) (n int, err error) {
+	writer, err := wsw.Conn.NextWriter(websocket.TextMessage)
+	if err != nil {
+		return 0, err
+	}
+	defer writer.Close()
+	return writer.Write(p)
+}
+
+func (wsw *wsWrapper) Read(p []byte) (n int, err error) {
+	for {
+		msgType, reader, err := wsw.Conn.NextReader()
+		if err != nil {
+			return 0, err
+		}
+
+		if msgType != websocket.TextMessage {
+			continue
+		}
+
+		b, err := io.ReadAll(reader)
+		if len(b) > len(p) {
+			return 0, errors.Wrapf(err, "Client message exceeded buffer size")
+		}
+		n = copy(p, b)
+		return n, err
+	}
+}
--- a/utils/default.go
+++ b/utils/default.go
@ -0,0 +1,41 @@
+package utils
+
+import (
+	"fmt"
+	"github.com/fatih/structs"
+	"reflect"
+	"strconv"
+)
+
+func ApplyDefaultValues(struct_ interface{}) (err error) {
+	o := structs.New(struct_)
+
+	for _, field := range o.Fields() {
+		defaultValue := field.Tag("default")
+		if defaultValue == "" {
+			continue
+		}
+		var val interface{}
+		switch field.Kind() {
+		case reflect.String:
+			val = defaultValue
+		case reflect.Bool:
+			if defaultValue == "true" {
+				val = true
+			} else if defaultValue == "false" {
+				val = false
+			} else {
+				return fmt.Errorf("invalid bool expression: %v, use true/false", defaultValue)
+			}
+		case reflect.Int:
+			val, err = strconv.Atoi(defaultValue)
+			if err != nil {
+				return err
+			}
+		default:
+			val = field.Value()
+		}
+		field.Set(val)
+	}
+	return nil
+}
--- a/utils/flags.go
+++ b/utils/flags.go
@ -0,0 +1,128 @@
+package utils
+
+import (
+	"log"
+	"os"
+	"reflect"
+	"strings"
+
+	"github.com/fatih/structs"
+	"github.com/urfave/cli/v2"
+	"github.com/yudai/hcl"
+
+	"github.com/sorenisanerd/gotty/pkg/homedir"
+)
+
+func GenerateFlags(options ...interface{}) (flags []cli.Flag, mappings map[string]string, err error) {
+	mappings = make(map[string]string)
+
+	for _, struct_ := range options {
+		o := structs.New(struct_)
+		for _, field := range o.Fields() {
+			flagName := field.Tag("flagName")
+			if flagName == "" {
+				continue
+			}
+			envName := "GOTTY_" + strings.ToUpper(strings.Join(strings.Split(flagName, "-"), "_"))
+			mappings[flagName] = field.Name()
+
+			flagShortName := field.Tag("flagSName")
+			var aliases []string
+			if flagShortName != "" {
+				aliases = []string{flagShortName}
+			}
+
+			flagDescription := field.Tag("flagDescribe")
+
+			switch field.Kind() {
+			case reflect.String:
+				flags = append(flags, &cli.StringFlag{
+					Name:    flagName,
+					Value:   field.Value().(string),
+					Usage:   flagDescription,
+					EnvVars: []string{envName},
+					Aliases: aliases,
+				})
+			case reflect.Bool:
+				flags = append(flags, &cli.BoolFlag{
+					Name:        flagName,
+					Usage:       flagDescription,
+					EnvVars:     []string{envName},
+					Aliases:     aliases,
+					DefaultText: field.Tag("default"),
+				})
+			case reflect.Int:
+				flags = append(flags, &cli.IntFlag{
+					Name:    flagName,
+					Value:   field.Value().(int),
+					Usage:   flagDescription,
+					EnvVars: []string{envName},
+					Aliases: aliases,
+				})
+			}
+		}
+	}
+
+	return
+}
+
+func ApplyFlags(
+	flags []cli.Flag,
+	mappingHint map[string]string,
+	c *cli.Context,
+	options ...interface{},
+) {
+	objects := make([]*structs.Struct, len(options))
+	for i, struct_ := range options {
+		objects[i] = structs.New(struct_)
+	}
+
+	for flagName, fieldName := range mappingHint {
+		if !c.IsSet(flagName) {
+			continue
+		}
+		var field *structs.Field
+		var ok bool
+		for _, o := range objects {
+			field, ok = o.FieldOk(fieldName)
+			if ok {
+				break
+			}
+		}
+		if field == nil {
+			continue
+		}
+		var val interface{}
+		switch field.Kind() {
+		case reflect.String:
+			val = c.String(flagName)
+		case reflect.Bool:
+			val = c.Bool(flagName)
+		case reflect.Int:
+			val = c.Int(flagName)
+		}
+		field.Set(val)
+	}
+}
+
+func ApplyConfigFile(filePath string, options ...interface{}) error {
+	filePath = homedir.Expand(filePath)
+	if _, err := os.Stat(filePath); os.IsNotExist(err) {
+		return err
+	}
+
+	fileString := []byte{}
+	log.Printf("Loading config file at: %s", filePath)
+	fileString, err := os.ReadFile(filePath)
+	if err != nil {
+		return err
+	}
+
+	for _, object := range options {
+		if err := hcl.Decode(object, string(fileString)); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
--- a/version.go
+++ b/version.go
@ -0,0 +1,3 @@
+package main
+
+var Version = "unknown_version"
--- a/webtty/codecs.go
+++ b/webtty/codecs.go
@ -0,0 +1,19 @@
+package webtty
+
+type Decoder interface {
+	Decode(dst, src []byte) (int, error)
+}
+
+type Encoder interface {
+	Encode(dst, src []byte) (int, error)
+}
+
+type NullCodec struct{}
+
+func (NullCodec) Encode(dst, src []byte) (int, error) {
+	return copy(dst, src), nil
+}
+
+func (NullCodec) Decode(dst, src []byte) (int, error) {
+	return copy(dst, src), nil
+}
--- a/webtty/doc.go
+++ b/webtty/doc.go
@ -0,0 +1,3 @@
+// Package webtty provides a protocl and an implementation to
+// controll terminals thorough networks.
+package webtty
--- a/webtty/errors.go
+++ b/webtty/errors.go
@ -0,0 +1,13 @@
+package webtty
+
+import (
+	"errors"
+)
+
+var (
+	// ErrSlaveClosed indicates the function has exited by the slave
+	ErrSlaveClosed = errors.New("slave closed")
+
+	// ErrSlaveClosed is returned when the slave connection is closed.
+	ErrMasterClosed = errors.New("master closed")
+)
--- a/webtty/master.go
+++ b/webtty/master.go
@ -0,0 +1,8 @@
+package webtty
+
+import (
+	"io"
+)
+
+// Master represents a PTY master, usually it's a websocket connection.
+type Master io.ReadWriter
--- a/webtty/message_types.go
+++ b/webtty/message_types.go
@ -0,0 +1,35 @@
+package webtty
+
+// Protocols defines the name of this protocol,
+// which is supposed to be used to the subprotocol of Websockt streams.
+var Protocols = []string{"webtty"}
+
+const (
+	// Unknown message type, maybe sent by a bug
+	UnknownInput = '0'
+	// User input typically from a keyboard
+	Input = '1'
+	// Ping to the server
+	Ping = '2'
+	// Notify that the browser size has been changed
+	ResizeTerminal = '3'
+	// Change encoding
+	SetEncoding = '4'
+)
+
+const (
+	// Unknown message type, maybe set by a bug
+	UnknownOutput = '0'
+	// Normal output to the terminal
+	Output = '1'
+	// Pong to the browser
+	Pong = '2'
+	// Set window title of the terminal
+	SetWindowTitle = '3'
+	// Set terminal preference
+	SetPreferences = '4'
+	// Make terminal to reconnect
+	SetReconnect = '5'
+	// Set the input buffer size
+	SetBufferSize = '6'
+)
--- a/webtty/option.go
+++ b/webtty/option.go
@ -0,0 +1,62 @@
+package webtty
+
+import (
+	"encoding/json"
+
+	"github.com/pkg/errors"
+)
+
+// Option is an option for WebTTY.
+type Option func(*WebTTY) error
+
+// WithPermitWrite sets a WebTTY to accept input from slaves.
+func WithPermitWrite() Option {
+	return func(wt *WebTTY) error {
+		wt.permitWrite = true
+		return nil
+	}
+}
+
+// WithFixedColumns sets a fixed width to TTY master.
+func WithFixedColumns(columns int) Option {
+	return func(wt *WebTTY) error {
+		wt.columns = columns
+		return nil
+	}
+}
+
+// WithFixedRows sets a fixed height to TTY master.
+func WithFixedRows(rows int) Option {
+	return func(wt *WebTTY) error {
+		wt.rows = rows
+		return nil
+	}
+}
+
+// WithWindowTitle sets the default window title of the session
+func WithWindowTitle(windowTitle []byte) Option {
+	return func(wt *WebTTY) error {
+		wt.windowTitle = windowTitle
+		return nil
+	}
+}
+
+// WithReconnect enables reconnection on the master side.
+func WithReconnect(timeInSeconds int) Option {
+	return func(wt *WebTTY) error {
+		wt.reconnect = timeInSeconds
+		return nil
+	}
+}
+
+// WithMasterPreferences sets an optional configuration of master.
+func WithMasterPreferences(preferences interface{}) Option {
+	return func(wt *WebTTY) error {
+		prefs, err := json.Marshal(preferences)
+		if err != nil {
+			return errors.Wrapf(err, "failed to marshal preferences as JSON")
+		}
+		wt.masterPrefs = prefs
+		return nil
+	}
+}
--- a/webtty/slave.go
+++ b/webtty/slave.go
@ -0,0 +1,17 @@
+package webtty
+
+import (
+	"io"
+)
+
+// Slave represents a PTY slave, typically it's a local command.
+type Slave interface {
+	io.ReadWriter
+
+	// WindowTitleVariables returns any values that can be used to fill out
+	// the title of a terminal.
+	WindowTitleVariables() map[string]interface{}
+
+	// ResizeTerminal sets a new size of the terminal.
+	ResizeTerminal(columns int, rows int) error
+}
--- a/webtty/webtty.go
+++ b/webtty/webtty.go
@ -0,0 +1,246 @@
+package webtty
+
+import (
+	"context"
+	"encoding/base64"
+	"encoding/json"
+	"sync"
+
+	"github.com/pkg/errors"
+)
+
+// WebTTY bridges a PTY slave and its PTY master.
+// To support text-based streams and side channel commands such as
+// terminal resizing, WebTTY uses an original protocol.
+type WebTTY struct {
+	// PTY Master, which probably a connection to browser
+	masterConn Master
+	// PTY Slave
+	slave Slave
+
+	windowTitle []byte
+	permitWrite bool
+	columns     int
+	rows        int
+	reconnect   int // in seconds
+	masterPrefs []byte
+	decoder     Decoder
+
+	bufferSize int
+	writeMutex sync.Mutex
+}
+
+// New creates a new instance of WebTTY.
+// masterConn is a connection to the PTY master,
+// typically it's a websocket connection to a client.
+// slave is a PTY slave such as a local command with a PTY.
+func New(masterConn Master, slave Slave, options ...Option) (*WebTTY, error) {
+	wt := &WebTTY{
+		masterConn: masterConn,
+		slave:      slave,
+
+		permitWrite: false,
+		columns:     0,
+		rows:        0,
+
+		bufferSize: 1024,
+		decoder:    &NullCodec{},
+	}
+
+	for _, option := range options {
+		option(wt)
+	}
+
+	return wt, nil
+}
+
+// Run starts the main process of the WebTTY.
+// This method blocks until the context is canceled.
+// Note that the master and slave are left intact even
+// after the context is canceled. Closing them is caller's
+// responsibility.
+// If the connection to one end gets closed, returns ErrSlaveClosed or ErrMasterClosed.
+func (wt *WebTTY) Run(ctx context.Context) error {
+	err := wt.sendInitializeMessage()
+	if err != nil {
+		return errors.Wrapf(err, "failed to send initializing message")
+	}
+
+	errs := make(chan error, 2)
+
+	go func() {
+		errs <- func() error {
+			buffer := make([]byte, wt.bufferSize)
+			for {
+				//base64 length
+				effectiveBufferSize := wt.bufferSize - 1
+				//max raw data length
+				maxChunkSize := int(effectiveBufferSize/4) * 3
+
+				n, err := wt.slave.Read(buffer[:maxChunkSize])
+				if err != nil {
+					return ErrSlaveClosed
+				}
+
+				err = wt.handleSlaveReadEvent(buffer[:n])
+				if err != nil {
+					return err
+				}
+			}
+		}()
+	}()
+
+	go func() {
+		errs <- func() error {
+			buffer := make([]byte, wt.bufferSize)
+			for {
+				n, err := wt.masterConn.Read(buffer)
+				if err != nil {
+					return ErrMasterClosed
+				}
+
+				err = wt.handleMasterReadEvent(buffer[:n])
+				if err != nil {
+					return err
+				}
+			}
+		}()
+	}()
+
+	select {
+	case <-ctx.Done():
+		err = ctx.Err()
+	case err = <-errs:
+	}
+
+	return err
+}
+
+func (wt *WebTTY) sendInitializeMessage() error {
+	err := wt.masterWrite(append([]byte{SetWindowTitle}, wt.windowTitle...))
+	if err != nil {
+		return errors.Wrapf(err, "failed to send window title")
+	}
+
+	bufSizeMsg, _ := json.Marshal(wt.bufferSize)
+	err = wt.masterWrite(append([]byte{SetBufferSize}, bufSizeMsg...))
+	if err != nil {
+		return errors.Wrapf(err, "failed to send buffer size")
+	}
+
+	if wt.reconnect > 0 {
+		reconnect, _ := json.Marshal(wt.reconnect)
+		err := wt.masterWrite(append([]byte{SetReconnect}, reconnect...))
+		if err != nil {
+			return errors.Wrapf(err, "failed to set reconnect")
+		}
+	}
+
+	if wt.masterPrefs != nil {
+		err := wt.masterWrite(append([]byte{SetPreferences}, wt.masterPrefs...))
+		if err != nil {
+			return errors.Wrapf(err, "failed to set preferences")
+		}
+	}
+
+	return nil
+}
+
+func (wt *WebTTY) handleSlaveReadEvent(data []byte) error {
+	safeMessage := base64.StdEncoding.EncodeToString(data)
+	err := wt.masterWrite(append([]byte{Output}, []byte(safeMessage)...))
+	if err != nil {
+		return errors.Wrapf(err, "failed to send message to master")
+	}
+
+	return nil
+}
+
+func (wt *WebTTY) masterWrite(data []byte) error {
+	wt.writeMutex.Lock()
+	defer wt.writeMutex.Unlock()
+
+	_, err := wt.masterConn.Write(data)
+	if err != nil {
+		return errors.Wrapf(err, "failed to write to master")
+	}
+
+	return nil
+}
+
+func (wt *WebTTY) handleMasterReadEvent(data []byte) error {
+	if len(data) == 0 {
+		return errors.New("unexpected zero length read from master")
+	}
+
+	switch data[0] {
+	case Input:
+		if !wt.permitWrite {
+			return nil
+		}
+
+		if len(data) <= 1 {
+			return nil
+		}
+
+		var decodedBuffer = make([]byte, len(data))
+		n, err := wt.decoder.Decode(decodedBuffer, data[1:])
+		if err != nil {
+			return errors.Wrapf(err, "failed to decode received data")
+		}
+
+		_, err = wt.slave.Write(decodedBuffer[:n])
+		if err != nil {
+			return errors.Wrapf(err, "failed to write received data to slave")
+		}
+
+	case Ping:
+		err := wt.masterWrite([]byte{Pong})
+		if err != nil {
+			return errors.Wrapf(err, "failed to return Pong message to master")
+		}
+
+	case SetEncoding:
+		switch string(data[1:]) {
+		case "base64":
+			wt.decoder = base64.StdEncoding
+		case "null":
+			wt.decoder = NullCodec{}
+		}
+
+	case ResizeTerminal:
+		if wt.columns != 0 && wt.rows != 0 {
+			break
+		}
+
+		if len(data) <= 1 {
+			return errors.New("received malformed remote command for terminal resize: empty payload")
+		}
+
+		var args argResizeTerminal
+		err := json.Unmarshal(data[1:], &args)
+		if err != nil {
+			return errors.Wrapf(err, "received malformed data for terminal resize")
+		}
+		rows := wt.rows
+		if rows == 0 {
+			rows = int(args.Rows)
+		}
+
+		columns := wt.columns
+		if columns == 0 {
+			columns = int(args.Columns)
+		}
+
+		wt.slave.ResizeTerminal(columns, rows)
+	default:
+		return errors.Errorf("unknown message type `%c`", data[0])
+	}
+
+	return nil
+}
+
+type argResizeTerminal struct {
+	Columns float64
+	Rows    float64
+}
--- a/webtty/webtty_test.go
+++ b/webtty/webtty_test.go
@ -0,0 +1,284 @@
+package webtty
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"io"
+	"sync"
+	"testing"
+)
+
+func TestInitialization(t *testing.T) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
+
+	mMaster, _, _, cancel := prepareSUT(t, &wg)
+	defer cancel()
+
+	// Check that the initialization happens as expected
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetWindowTitle)
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetBufferSize)
+}
+
+func TestInitializationWithPreferences(t *testing.T) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
+
+	mMaster, _, _, cancel := prepareSUT(t, &wg, WithMasterPreferences(map[string]string{"foo": "bar"}))
+	defer cancel()
+
+	// Check that the initialization happens as expected
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetWindowTitle)
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetBufferSize)
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetPreferences)
+}
+
+func TestInitializationWithReconnect(t *testing.T) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
+
+	mMaster, _, _, cancel := prepareSUT(t, &wg, WithReconnect(10))
+	defer cancel()
+
+	// Check that the initialization happens as expected
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetWindowTitle)
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetBufferSize)
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetReconnect)
+}
+
+func TestWriteFromSlaveCommand(t *testing.T) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
+
+	mMaster, mSlave, _, cancel := prepareSUT(t, &wg)
+	defer cancel()
+
+	// Check that the initialization happens as expected
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetWindowTitle)
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetBufferSize)
+
+	// Simulate the slave (the process being run by GoTTY)
+	// echoing "foobar"
+	message := []byte("foobar")
+	mSlave.slaveToGottyWriter.Write(message)
+
+	// And then make sure it makes it way to the client
+	// through the websocket as an output message
+	buf := make([]byte, 1024)
+	n, err := mMaster.gottyToMasterReader.Read(buf)
+	if err != nil {
+		t.Fatalf("Unexpected error from Read(): %s", err)
+	}
+	if buf[0] != Output {
+		t.Fatalf("Unexpected message type `%c`", buf[0])
+	}
+
+	// Decode it and make sure it's intact
+	decoded := make([]byte, 1024)
+	n, err = base64.StdEncoding.Decode(decoded, buf[1:n])
+	if err != nil {
+		t.Fatalf("Unexpected error from Decode(): %s", err)
+	}
+	if !bytes.Equal(decoded[:n], message) {
+		t.Fatalf("Unexpected message received: `%s`", decoded[:n])
+	}
+
+	cancel()
+	wg.Wait()
+}
+func TestWriteFromFrontend(t *testing.T) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
+
+	mMaster, mSlave, _, cancel := prepareSUT(t, &wg, WithPermitWrite())
+	defer cancel()
+
+	// Absorb initialization messages
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetWindowTitle)
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetBufferSize)
+
+	// simulate input from frontend...
+	message := []byte("1hello\n") // line buffered canonical mode
+	mMaster.masterToGottyWriter.Write(message)
+
+	// ...and make sure it makes it through to the slave intact
+	readBuf := make([]byte, 1024)
+	n, err := mSlave.gottyToSlaveReader.Read(readBuf)
+	if err != nil {
+		t.Fatalf("Unexpected error from Write(): %s", err)
+	}
+	if !bytes.Equal(readBuf[:n], message[1:]) {
+		t.Fatalf("Unexpected message received: `%s`", readBuf[:n])
+	}
+}
+
+func TestPing(t *testing.T) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
+
+	mMaster, _, _, cancel := prepareSUT(t, &wg)
+	defer cancel()
+
+	// Absorb initialization messages
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetWindowTitle)
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetBufferSize)
+
+	// ping
+	message := []byte("2\n") // line buffered canonical mode
+	n, err := mMaster.masterToGottyWriter.Write(message)
+	if err != nil {
+		t.Fatalf("Unexpected error from Write(): %s", err)
+	}
+	if n != len(message) {
+		t.Fatalf("Write() accepted `%d` for message `%s`", n, message)
+	}
+
+	readBuf := make([]byte, 1024)
+	n, err = mMaster.gottyToMasterReader.Read(readBuf)
+	if err != nil {
+		t.Fatalf("Unexpected error from Read(): %s", err)
+	}
+	if !bytes.Equal(readBuf[:n], []byte{'2'}) {
+		t.Fatalf("Unexpected message received: `%s`", readBuf[:n])
+	}
+
+	cancel()
+	wg.Wait()
+}
+
+func TestResizeTerminal(t *testing.T) {
+	var wg sync.WaitGroup
+	defer wg.Wait()
+
+	mMaster, mSlave, _, cancel := prepareSUT(t, &wg)
+	defer cancel()
+
+	// Absorb initialization messages
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetWindowTitle)
+	checkNextMsgType(t, mMaster.gottyToMasterReader, SetBufferSize)
+
+	message := []byte(`3{"Columns": 1234, "Rows": 2345}` + "\n") // line buffered canonical mode
+
+	mSlave.wg.Add(1)
+	n, err := mMaster.masterToGottyWriter.Write(message)
+	if err != nil {
+		t.Fatalf("Unexpected error from Write(): %s", err)
+	}
+	if n != len(message) {
+		t.Fatalf("Write() accepted `%d` for message `%s`", n, message)
+	}
+	mSlave.wg.Wait()
+
+	if mSlave.columns != 1234 {
+		t.Fatalf("Columns not set correctly. Expected %v, got %v", 1234, mSlave.columns)
+	}
+
+	if mSlave.rows != 2345 {
+		t.Fatalf("Rows not set correctly. Expected %v, got %v", 2345, mSlave.columns)
+	}
+
+	cancel()
+	wg.Wait()
+}
+
+type mockMaster struct {
+	gottyToMasterReader *io.PipeReader
+	gottyToMasterWriter *io.PipeWriter
+	masterToGottyReader *io.PipeReader
+	masterToGottyWriter *io.PipeWriter
+}
+
+type mockSlave struct {
+	gottyToSlaveReader *io.PipeReader
+	gottyToSlaveWriter *io.PipeWriter
+	slaveToGottyReader *io.PipeReader
+	slaveToGottyWriter *io.PipeWriter
+	wg                 sync.WaitGroup
+	columns, rows      int
+}
+
+func prepareSUT(t *testing.T, wg *sync.WaitGroup, options ...Option) (*mockMaster, *mockSlave, *WebTTY, context.CancelFunc) {
+	mMaster := newMockMaster()
+	mSlave := newMockSlave()
+
+	dt, err := New(mMaster, mSlave, options...)
+	if err != nil {
+		t.Fatalf("Unexpected error from New(): %s", err)
+	}
+
+	ctx, cancel := context.WithCancel(context.Background())
+	wg.Add(1)
+	go func() {
+		wg.Done()
+		dt.Run(ctx)
+	}()
+	return mMaster, mSlave, dt, cancel
+}
+
+func checkNextMsgType(t *testing.T, reader io.Reader, expected byte) {
+	msgType, _ := nextMsg(t, reader)
+	if msgType != expected {
+		t.Fatalf("Unexpected message type `%c`", msgType)
+	}
+}
+
+func nextMsg(t *testing.T, reader io.Reader) (byte, []byte) {
+	buf := make([]byte, 1024)
+	_, err := reader.Read(buf)
+	if err != nil {
+		t.Fatalf("unexpected error %v", err)
+	}
+	return buf[0], buf[1:]
+}
+
+func newMockMaster() *mockMaster {
+	rv := &mockMaster{}
+	rv.gottyToMasterReader, rv.gottyToMasterWriter = io.Pipe()
+	rv.masterToGottyReader, rv.masterToGottyWriter = io.Pipe()
+	return rv
+}
+
+func (mm *mockMaster) close() {
+	mm.masterToGottyWriter.Close()
+	mm.gottyToMasterReader.Close()
+}
+
+func (mm *mockMaster) Read(buf []byte) (int, error) {
+	return mm.masterToGottyReader.Read(buf)
+}
+
+func (mm *mockMaster) Write(buf []byte) (int, error) {
+	return mm.gottyToMasterWriter.Write(buf)
+}
+
+func newMockSlave() *mockSlave {
+	rv := &mockSlave{}
+	rv.gottyToSlaveReader, rv.gottyToSlaveWriter = io.Pipe()
+	rv.slaveToGottyReader, rv.slaveToGottyWriter = io.Pipe()
+	return rv
+}
+
+func (ms *mockSlave) close() {
+	ms.slaveToGottyWriter.Close()
+	ms.gottyToSlaveReader.Close()
+}
+
+func (ms *mockSlave) Read(buf []byte) (int, error) {
+	return ms.slaveToGottyReader.Read(buf)
+}
+
+func (ms *mockSlave) Write(buf []byte) (int, error) {
+	return ms.gottyToSlaveWriter.Write(buf)
+}
+
+func (ms *mockSlave) WindowTitleVariables() map[string]interface{} {
+	return nil
+}
+
+func (ms *mockSlave) ResizeTerminal(columns int, rows int) error {
+	ms.columns = columns
+	ms.rows = rows
+	ms.wg.Done()
+	return nil
+}
--- a/wercker.yml
+++ b/wercker.yml
@ -1,32 +0,0 @@
-box: golang:1.9.0
-
-build:
-  steps:
-    - setup-go-workspace
-    - script:
-        name: tools
-        code: make tools
-    - script:
-        name: test
-        code: make test
-    - script:
-        name: cross compile
-        code: make cross_compile OUTPUT_DIR=$WERCKER_OUTPUT_DIR
-    - script:
-        name: store Makefile
-        code: cp Makefile $WERCKER_OUTPUT_DIR/
-
-deploy:
-  steps:
-    - script:
-        name: tools
-        code: make tools
-    - script:
-        name: targz
-        code: make targz OUTPUT_DIR=.
-    - script:
-        name: shasums
-        code: make shasums OUTPUT_DIR=.
-    - script:
-        name: release
-        code: make release OUTPUT_DIR=. GIT_COMMIT=$WERCKER_GIT_COMMIT