Optionally specify ws:// and wss:// port in config

web/react/stores/socket_store.jsx

@@ -49,7 +49,7 @@ class SocketStoreClass extends EventEmitter {
                 protocol = 'wss://';
             }
 
-            var connUrl = protocol + location.host + '/api/v1/websocket?' + Utils.getSessionIndex();
+            var connUrl = protocol + location.host + ((/:\d+/).test(location.host) ? '' : Utils.getWebsocketPort(protocol)) + '/api/v1/websocket?' + Utils.getSessionIndex();
 
             if (this.failCount === 0) {
                 console.log('websocket connecting to ' + connUrl); //eslint-disable-line no-console

web/react/utils/utils.jsx

@@ -1101,6 +1101,17 @@ export function getFileName(path) {
     return split[split.length - 1];
 }
 
+// Gets the websocket port to use. Configurable on the server.
+export function getWebsocketPort(protocol) {
+	if ((/^wss:/).test(protocol)) { // wss://
+		return ':' + global.window.mm_config.WebsocketSecurePort;
+	}
+	if ((/^ws:/).test(protocol)) {
+		return ':' + global.window.mm_config.WebsocketPort;
+	}
+	return '';
+}
+
 export function getSessionIndex() {
     if (global.window.mm_session_token_index >= 0) {
         return 'session_token_index=' + global.window.mm_session_token_index;