Unable to accept WebSocket connections from iOS mobile devices RSS

• • Reply
  

  Clay.Fowler

  0 Points

  2 Posts

  Unable to accept WebSocket connections from iOS mobile devices

  Jul 27, 2012 05:00 PM|LINK

  We've implemented WebSocket services in our asp.net project with Dot Net 4.5. Along the usual lines:

  if (System.Web.HttpContext.Current.IsWebSocketRequest)
              {
                  log.Debug("Accepting web socket connection");
                  System.Web.HttpContext.Current.AcceptWebSocketRequest(HandleClient);
              }
              else
              {
                  log.Debug("Rejecting non web socket connection");
                  System.Web.HttpContext.Current.Response.StatusCode = 500;
              }

  We can successfully connect to this and have traffic in both directions with Chrome and IE on the desktop, with Chrome on Android devices, etc. with no problems. But when trying to hit it from any iOS device (iPod Touch, iPad, etc.), System.Web.HttpContext.Current.IsWebSocketRequest is always false.

  Therefore, it is currently not possible to service iOS clients with this component.

  Is this a known bug?

  
   

• • Reply
  

  Paul Batum

  Member

  46 Points

  8 Posts

  Re: Unable to accept WebSocket connections from iOS mobile devices

  Jul 28, 2012 11:41 PM|LINK

  It is not a bug. The problem is that Safari for iOS 5 or earlier does not implement the final version of the WebSocket protocol that was standardised as RFC 6455.

  According to caniuse.com, this is resolved in Safari for iOS 6:
  http://caniuse.com/#search=websocket

  You could try installing a beta of iOS 6 onto one of your devices to confirm this.