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GUAC-867: Add periodic keep-alive ping to ensure the session does not perish while a connection is active.

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This commit is contained in:
Michael Jumper
2014-10-13 03:25:31 -07:00
parent 115f647f7a
commit 04ba001f15
4 changed files with 111 additions and 7 deletions
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30
guacamole/src/main/webapp/scripts/client-ui.js
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@@ -195,10 +195,11 @@ GuacUI.Client = {
},
/* Constants */
"KEYBOARD_AUTO_RESIZE_INTERVAL" : 30, /* milliseconds */
"RECONNECT_PERIOD" : 15, /* seconds */
"TEXT_INPUT_PADDING" : 128, /* characters */
"KEEP_ALIVE_INTERVAL" : 60000, /* milliseconds */
"KEYBOARD_AUTO_RESIZE_INTERVAL" : 30, /* milliseconds */
"RECONNECT_PERIOD" : 15, /* seconds */
"TEXT_INPUT_PADDING" : 128, /* characters */
"TEXT_INPUT_PADDING_CODEPOINT" : 0x200B,
/* Main application area */
@@ -1014,6 +1015,11 @@ GuacUI.Client.connect = function() {
connect_string += "&video=" + encodeURIComponent(mimetype);
});
// Ping server every 10 seconds
var session_keep_alive = window.setInterval(function _session_keep_alive() {
GuacamoleService.KeepAlive.ping();
}, GuacUI.Client.KEEP_ALIVE_INTERVAL);
// Show connection errors from tunnel
tunnel.onerror = function(status) {
var message = GuacUI.Client.tunnel_errors[status.code] || GuacUI.Client.tunnel_errors.DEFAULT;
@@ -1021,10 +1027,20 @@ GuacUI.Client.connect = function() {
GuacUI.Client.tunnel_auto_reconnect[status.code] && GuacUI.Client.RECONNECT_PERIOD);
};
// Notify of disconnections (if not already notified of something else)
tunnel.onstatechange = function(state) {
if (state === Guacamole.Tunnel.State.CLOSED && !GuacUI.Client.visibleStatus)
GuacUI.Client.showStatus("Disconnected", "You have been disconnected. Reload the page to reconnect.");
// Handle disconnect
if (state === Guacamole.Tunnel.State.CLOSED) {
// No need for a keep-alive ping if the tunnel is closed
window.clearInterval(session_keep_alive);
// Notify of disconnections (if not already notified of something else)
if (!GuacUI.Client.visibleStatus)
GuacUI.Client.showStatus("Disconnected",
"You have been disconnected. Reload the page to reconnect.");
}
};
// Connect