Hunchensocket - WebSockets for Hunchentoot
As WebSockets are still in draft state and security concerns have been raised against older (but supported) draft versions of the protocol implemented in a number of browsers, it should not be used productively (yet), unless of course you know what you're doing.
Currently, only draft-ietf-hybi-thewebsocketprotocol-00 aka draft-hixie-thewebsocketprotocol-76 as implemented in Chromium versions 6 to 13 and Firefox 4.0 to 5.0 (disabled, must be enabled explicitly) are available but newer drafts and the future standard are to come as new web browser versions supporting them emerge. For a more complete matrix including proprietary browsers, please consider the WebSocket Wikipedia article.
Hunchensocket is meant to be used as a Hunchentoot extension. In order to be
able to establish and send and receive on WebSockets, Follow the regular
Hunchentoot documentation but exchange
In order to make use of WebSocket connections, one must define WebSocket
handlers that decide whether to accept a WebSocket request and, if they do,
return a cascading closure of function as follows:
λ request -> λ stream mutex -> λ message
Or, in other words, a (dispatcher) function that takes a Hunchentoot request object and, if it accepts the request, returns a (handshake handler) function which can (optionally) be used to perform initial set-up stuff and finally has to evaluate to a final (message handler) function that will be called upon socket input and has access to the both lexically enclosed and dynamically available websocket stream and mutex objects in order to send data through the socket.
Links and References
Copyright (C) 2011 Alexander Kahl firstname.lastname@example.org
This file is part of Hunchensocket.
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