Send a message to server synchronous

[james04gr]

In order to implement a pingPong manager to handle the fact that the library does not understand when the server endpoint falls, i want to ask if i can send a message to server and get a synchronous response and not in a callback (or both callback and synchronous)

Moreover, i would like to know if there is another technique to undrestand if the server side end point is still alive
Thank you