title: SignalR - how to reconnect client to server (how to restart SignalR)
body: <p>I have the following problem with SignalR with users accessing my website from a mobile device. 
  The problem is that when the phone locks or the user goes to another app, the Disconnect() method is fired on the server (I try sending a message to the server and waiting for it to reply trough SignalR but there is no reply from the server after the Disconnect method is fired on server). After this it seams as the client is no more connected to the server. </p>
  
  <p>How can the client tell the server that it is back?</p>