Any known issues with WebSockets?

Ee have a problem with WebSockets. In Android we get a websocket connection but a communication only after a reload in the developer console. In IOS there is the problem, too.

We use socket.io.

Your system information:

Cordova CLI: 5.1.1
Gulp version: CLI version 3.9.0
Gulp local: Local version 3.9.0
Ionic Version: 1.0.1
Ionic CLI Version: 1.6.1
Ionic App Lib Version: 0.3.3
OS: Windows 8.1
Node Version: v1.6.2

Any tips or known issues?

Thank for any help.