From 168359344e4003768b57704b6daca53095bec19f Mon Sep 17 00:00:00 2001
From: Michael Jumper <mjumper@apache.org>
Date: Fri, 11 Nov 2016 13:13:48 -0800
Subject: [PATCH] GUACAMOLE-118: Use poll() when waiting for data from Telnet.

---
 src/protocols/telnet/telnet.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/src/protocols/telnet/telnet.c b/src/protocols/telnet/telnet.c
index 8ac6ed0c..6ca9aba7 100644
--- a/src/protocols/telnet/telnet.c
+++ b/src/protocols/telnet/telnet.c
@@ -29,10 +29,10 @@
 #include <errno.h>
 #include <netdb.h>
 #include <netinet/in.h>
+#include <poll.h>
 #include <pthread.h>
 #include <stdlib.h>
 #include <string.h>
-#include <sys/select.h>
 #include <sys/socket.h>
 #include <sys/time.h>
 #include <unistd.h>
@@ -442,17 +442,15 @@ void guac_telnet_send_user(telnet_t* telnet, const char* username) {
  */
 static int __guac_telnet_wait(int socket_fd) {
 
-    fd_set fds;
-    struct timeval timeout;
-
-    FD_ZERO(&fds);
-    FD_SET(socket_fd, &fds);
+    /* Build array of file descriptors */
+    struct pollfd fds[] = {{
+        .fd      = socket_fd,
+        .events  = POLLIN,
+        .revents = 0,
+    }};
 
     /* Wait for one second */
-    timeout.tv_sec = 1;
-    timeout.tv_usec = 0;
-
-    return select(socket_fd+1, &fds, NULL, NULL, &timeout);
+    return poll(fds, 1, 1000);
 
 }