Long pulling method added

src/app/services/chat.service.ts

@@ -23,6 +23,7 @@ export class ChatService {
   SERVER_URL = 'wss://www.tabularium.pt/websocket';
   public messages: Subject<any>;
   loggedUserChat:any;
+  bindOnMessage: any;
 
   constructor(
     private http:HttpClient,
@@ -242,4 +243,40 @@ export class ChatService {
       return this.http.post(environment.apiChatUrl+'groups.kick', body, opts);
     }
 
+    async subscribe(roomId:any) {
+      console.log('Subcrive')
+      let params = new HttpParams();
+      params = params.set("roomId", roomId);
+      let opts = { 
+        headers: this.headers, 
+        params: params 
+      }
+
+      this.http.get(environment.apiChatUrl+'im.messages', opts).subscribe(async res => {
+        console.log("Subcrive", res)
+
+        if (res == 502) {
+          // Connection timeout
+          // happens when the connection was pending for too long
+          // let's reconnect
+          await this.subscribe(roomId);
+        } else if (res != 200) {
+          // Show Error
+          //showMessage(response.statusText);
+          this.getRoomMessages(roomId)
+          // Reconnect in one second
+          await new Promise(resolve => setTimeout(resolve, 1000));
+          await this.subscribe(roomId);
+        } else {
+          // Got message
+          //let message = await response.text();
+          this.getRoomMessages(roomId)
+          await this.subscribe(roomId);
+        }
+
+      })
+  
+     
+    }
+
 }