WSO2 API Cloud now fully supports publishing WebSocket APIs. WebSocket is a TCP-based protocol that is a part of the HTML5 specification, enables full-duplex communications and streaming, and reduces network traffic and delays.
In API Cloud, you can now treat WebSockets just the same way as you treat regular HTTP protocols. It is just another option when you add a new API:
The wizard then guides you through the rest of the process so you can define your policies and make the WebSocket endpoint fully managed.
If you need details, just read this API Manager tutorial that covers the functionality: Create a WebSocket API – now this page applies to API Cloud as well.