What draft does java-websocket's WebSocketServer use?

Question

I can't figure out from the WebSocketServer.java source which draft it uses.

The WebSocketClient.java can use RFC 6455, Hybi 17, Hybi 10, Hixie 76, and Hixie 75 yet defaults to RFC 6455 .

What draft does java-websocket's WebSocketServer use?

Answer 1

It supports whatever drafts you want it to support.

The constructor supports passing in a list of Drafts that you want the server to handle.

https://github.com/TooTallNate/Java-WebSocket/blob/master/src/main/java/org/java_websocket/server/WebSocketServer.java#L131-L150

Looks like it will always support Version 13 (RFC-6455) even if you pass in an empty Drafts list ( as a null list will result in all 4 default Drafts being active), otherwise it has 4 drafts implemented for you to pick / choose / limit from.

https://github.com/TooTallNate/Java-WebSocket/tree/master/src/main/java/org/java_websocket/drafts

• Draft_17 = Sec-WebSocket-Version: 13 (aka RFC-6455)
• Draft_10 = Sec-WebSocket-Version: 8
• Draft_76 = Sec-WebSocket-Version (unspecified, pre-versioning, Hixie-76)
• Draft_75 = Sec-WebSocket-Version (unspecified, pre-versioning, Hixie-75)

Update: March 2013

As of Jetty 9.x, only RFC6455 ( Sec-WebSocket-Version: 13 ) is supported. All support for draft versions of WebSocket have been dropped.