Better logging

[saikat]

Ideally, per-message logging too.

[kreichgauer]

+1

Especially the parts where errors in your application code are silenced, such as https://github.com/LearnBoost/Socket.IO-node/blob/master/lib/socket.io/transports/xhr-polling.js#L51

Makes it a pain to debug.

[adammw]

If logging could include the request object (when available) it would be useful for logging the IP address and other headers.

[rauchg]

We have amazing logging now.