SignalR client with multiple connections

Question

I have multiple SignalR \'services\' running and only one UI to access them.

How can I make the client js to talk to multiple connections with different Url? Because

Answer 1

My solution for such occasions:

var SignalRHelpers = function () {
  var _connectionDeferred;

  var subscribeToConnectionStart = function (callback) {
    if (!_connectionDeferred)   // start connection if not yet initialized
        _connectionDeferred = $.connection.hub.start();

    if ($.connection.hub.state == $.connection.connectionState.connected && callback) {
        // already connected
        callback();
    } else if (callback) {
        // register handler
        _connectionDeferred.done(callback);
    }
  };

  return {
    SubscribeToConnectionStart: subscribeToConnectionStart
  };
}();

It internally stores the promise object from start() and attaches handlers as needed.

Basically you just call SignalRHelpers.SubscribeToConnectionStart every time you need to connect. For example

SignalRHelpers.SubscribeToConnectionStart(function(){
    someHub.server.executeSomething();
});