[ANN] sockjs-go: SockJS server for Go

[juha...@gmail.com]

I've written a SockJS server for Go.

https://github.com/fzzy/sockjs-go

It's still experimental, but nervertheless passes 68/72 tests of the sockjs test suite (remaining tests wontfix right now due to issues in Go's websocket package).
There's a trivial chat example included in the examples directory as well.

[Sebastian Schuler]

Thanks for your hard work!

Is there any progress to report about the missing tests? Go 1.1 has been released, did they fix the problem with the websocket close upstream?

[juha...@gmail.com]

To my knowledge Go 1.1 does not fix any of the issues with websocket.

These are the missing four tests:

(should be trivial to fix on upstream, see http://code.google.com/p/go/issues/detail?id=4588)
test_close (__main__.RawWebsocket) ... FAIL

(test hangs for some reason. haproxy works for me, tough)
test_haproxy (__main__.WebsocketHixie76) ... ERROR

(same error for the two of these:
Exception: 400 {'Sec-WebSocket-Version': '13, 8'} No Transfer-Encoding:chunked nor Content-Length nor Connection:Close!
Not sure how to fix, could be trivial. I think it's an issue on upstream.)
test_firefox_602_connection_header (__main__.WebsocketHybi10) ... ERROR
test_headersSanity (__main__.WebsocketHybi10) ... ERROR

The missing tests are all related to websockets and could probably be fixed by sending patches to upstream.

Also, the google websocket package has two other problems:
1) it does not allow setting maximum message size, http://code.google.com/p/go/issues/detail?id=5082
you may run out of memory, if someone sends you a very big message

2) it does not support PINGs or PONGs. apparently hanged connections may never get garbage collected.
at least according to this guy: https://plus.google.com/101522949595361604155/posts/8n4CSePMwgV

I am aware of this alternative websocket implementation, but its API looks weird to me.
https://github.com/garyburd/go-websocket/

Maybe for now, it's best just to disable websocket with sockjs-go, if you want to do anything semi-serious with it.