[Haskell-cafe] Protocol buffer network examples

[Mads Lindstrøm]

Hi

I am trying to read and write delimited messages[3] using
protocol-buffers [1,2] over a socket. I have managed to write delimited
messages and I was looking for examples of reading delimited messages.
Maybe somebody has an example of reading delimited messages from a
socket?

The Haskell protocol-buffer[1] package mostly uses bytestrings, but I
need to read from a socket. Of cause, I can use the bytestring package
to read X number of bytes from a socket-handle. But it is impossible to
know what X is, before you start parsing the message, as even integers
are variable length in protocol buffers.


Hope somebody can help,

Mads Lindstrøm

[1] http://hackage.haskell.org/package/protocol-buffers

[2] http://code.google.com/p/protobuf/

[3] Delimited messages is a protocol buffers technique, where one writes
the size of the message before the actual message:
http://code.google.com/apis/protocolbuffers/docs/techniques.html#streaming