Added socket connection acknowledgement and ping events to resolve freeze issues

app/src/main/java/com/vsoft/vera/CatalogueApplication.java

@@ -174,7 +174,7 @@ public class CatalogueApplication extends MultiDexApplication {
             options.upgrade = true;
 
             mSocket = IO.socket(Constants.CHAT_SERVER_URL,options);
-//            mSocket = IO.socket("http://10.1.8.229:12811",options);
+//            mSocket = IO.socket("http://74cb19e2.ngrok.io/",options);
 
         } catch (URISyntaxException e) {
             throw new RuntimeException(e);

app/src/main/res/values/strings.xml

@@ -140,6 +140,7 @@
     <string name="connect">Connected</string>
     <string name="disconnect">Disconnected, Please check your internet connection</string>
     <string name="error_connect">Failed to connect</string>
+    <string name="error_connect_try_again">Failed to connect. Please try again!</string>
     <string name="unauthorized_user">Unauthorized User</string>
 
     <!-- messages -->