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60 lines
3.5 KiB
Markdown
60 lines
3.5 KiB
Markdown
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# Gorilla WebSocket
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Gorilla WebSocket is a [Go](http://golang.org/) implementation of the
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[WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol.
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### Documentation
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* [API Reference](http://godoc.org/github.com/gorilla/websocket)
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* [Chat example](https://github.com/gorilla/websocket/tree/master/examples/chat)
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* [File watch example](https://github.com/gorilla/websocket/tree/master/examples/filewatch)
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### Status
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The Gorilla WebSocket package provides a complete and tested implementation of
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the [WebSocket](http://www.rfc-editor.org/rfc/rfc6455.txt) protocol. The
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package API is stable.
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### Installation
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go get github.com/gorilla/websocket
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### Protocol Compliance
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The Gorilla WebSocket package passes the server tests in the [Autobahn Test
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Suite](http://autobahn.ws/testsuite) using the application in the [examples/autobahn
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subdirectory](https://github.com/gorilla/websocket/tree/master/examples/autobahn).
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### Gorilla WebSocket compared with other packages
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<table>
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<tr>
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<th></th>
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<th><a href="http://godoc.org/github.com/gorilla/websocket">github.com/gorilla</a></th>
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<th><a href="http://godoc.org/golang.org/x/net/websocket">golang.org/x/net</a></th>
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</tr>
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<tr>
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<tr><td colspan="3"><a href="http://tools.ietf.org/html/rfc6455">RFC 6455</a> Features</td></tr>
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<tr><td>Passes <a href="http://autobahn.ws/testsuite/">Autobahn Test Suite</a></td><td><a href="https://github.com/gorilla/websocket/tree/master/examples/autobahn">Yes</a></td><td>No</td></tr>
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<tr><td>Receive <a href="https://tools.ietf.org/html/rfc6455#section-5.4">fragmented</a> message<td>Yes</td><td><a href="https://code.google.com/p/go/issues/detail?id=7632">No</a>, see note 1</td></tr>
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<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.1">close</a> message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=4588">No</a></td></tr>
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<tr><td>Send <a href="https://tools.ietf.org/html/rfc6455#section-5.5.2">pings</a> and receive <a href="https://tools.ietf.org/html/rfc6455#section-5.5.3">pongs</a></td><td><a href="http://godoc.org/github.com/gorilla/websocket#hdr-Control_Messages">Yes</a></td><td>No</td></tr>
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<tr><td>Get the <a href="https://tools.ietf.org/html/rfc6455#section-5.6">type</a> of a received data message</td><td>Yes</td><td>Yes, see note 2</td></tr>
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<tr><td colspan="3">Other Features</tr></td>
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<tr><td>Limit size of received message</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.SetReadLimit">Yes</a></td><td><a href="https://code.google.com/p/go/issues/detail?id=5082">No</a></td></tr>
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<tr><td>Read message using io.Reader</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextReader">Yes</a></td><td>No, see note 3</td></tr>
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<tr><td>Write message using io.WriteCloser</td><td><a href="http://godoc.org/github.com/gorilla/websocket#Conn.NextWriter">Yes</a></td><td>No, see note 3</td></tr>
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</table>
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Notes:
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1. Large messages are fragmented in [Chrome's new WebSocket implementation](http://www.ietf.org/mail-archive/web/hybi/current/msg10503.html).
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2. The application can get the type of a received data message by implementing
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a [Codec marshal](http://godoc.org/golang.org/x/net/websocket#Codec.Marshal)
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function.
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3. The go.net io.Reader and io.Writer operate across WebSocket frame boundaries.
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Read returns when the input buffer is full or a frame boundary is
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encountered. Each call to Write sends a single frame message. The Gorilla
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io.Reader and io.WriteCloser operate on a single WebSocket message.
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