PLT-3562 Switch websocket over to post-connect authentication (#4327)

* Switch websocket over to post-connect authentication

* Add ability to specify token in websocket js driver, add unit tests

* Temporarily disable client websocket tests until issues are resolved

* Minor refactoring and fix status test

* Add isAuthenticated method to WebConn and minor status updates

webapp/client/websocket_client.jsx

@@ -18,7 +18,7 @@ export default class WebSocketClient {
         this.closeCallback = null;
     }
 
-    initialize(connectionUrl) {
+    initialize(connectionUrl, token) {
         if (this.conn) {
             return;
         }
@@ -30,6 +30,10 @@ export default class WebSocketClient {
         this.conn = new WebSocket(connectionUrl);
 
         this.conn.onopen = () => {
+            if (token) {
+                this.sendMessage('authentication_challenge', {token});
+            }
+
             if (this.connectFailCount > 0) {
                 console.log('websocket re-established connection'); //eslint-disable-line no-console
                 if (this.reconnectCallback) {
@@ -68,7 +72,7 @@ export default class WebSocketClient {
 
             setTimeout(
                 () => {
-                    this.initialize(connectionUrl);
+                    this.initialize(connectionUrl, token);
                 },
                 retryTime
             );
@@ -152,12 +156,12 @@ export default class WebSocketClient {
         }
     }
 
-    userTyping(channelId, parentId) {
+    userTyping(channelId, parentId, callback) {
         const data = {};
         data.channel_id = channelId;
         data.parent_id = parentId;
 
-        this.sendMessage('user_typing', data);
+        this.sendMessage('user_typing', data, callback);
     }
 
     getStatuses(callback) {