Websockets not working (ssl acceleration?)

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http://serverfault.com – Testing a socket.io application in the PROD environment for the first time, we found that while the xhr-polling transport (Ajax long polling) works, the websocket transport does not. Looking at the data transmitted using Fiddler, I can see that the UPGRADE happens and the first message from the server (5 bytes gross) arrive at the client. The client then sends a couple of messages to the server, which normally result in server->client messages But those server->client messages never arrive (I'm not even sure if the client->server messages arrive on the server side). Eventually (after abou (HowTos)