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To keep websockets alive send every eight seconds a ping to the server.

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This commit is contained in:
Sascha L. Teichmann 2015-03-13 12:29:55 +01:00
parent d2b6ff4fbb
commit dda0716053
1 changed files with 32 additions and 4 deletions
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34
cmd/mtwebmapper/web/js/auto-update.js
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@ -15,9 +15,7 @@ L.Control.AutoUpdate = L.Control.extend({
return container;
},
cbClick: function (e) {
L.DomEvent.stopPropagation(e);
this.intendedFunction(this.pressed);
switchButtons: function() {
if (this.pressed) {
this.pressed = false;
this.iconStart.setAttribute('class', 'fa fa-pause');
@ -29,18 +27,48 @@ L.Control.AutoUpdate = L.Control.extend({
}
},
cbClick: function (e) {
L.DomEvent.stopPropagation(e);
this.intendedFunction(this.pressed);
this.switchButtons();
},
intendedFunction: function() {
alert('no function selected');
},
stopUpdate: function() {
if (this.socket) {
this.socket.close();
this.socket = null;
}
},
autoUpdate: function() {
var me = this;
this.socket = new WebSocket('ws://' + window.location.host + '/ws');
this.socket.onerror = function(evt) {
me.stopUpdate();
me.switchButtons();
};
this.socket.onclose = this.socket.onerror;
this.socket.onopen = function(evt) {
// Sending pings every 5 secs to keep connection alive.
var heartbeat = function() {
if (heartbeat && me.socket) {
me.socket.send("PING");
setTimeout(heartbeat, 8000);
} else {
// Prevent sending pings to re-opened sockets.
heartbeat = null;
}
};
setTimeout(heartbeat, 8000);
};
this.socket.onmessage = function(evt) {
var updatePlayers = function(json) {