Haskell binary analysis

parseAll = do
 hdr <- parseHeader
 pa <- parsePayloadA
 pb <- parsePayloadB
 ...

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I have been trying to implement a protocol parser in Haskell, I am very new to this language, especially when monad is involved. I have been using binary-0.5.0.2 and describe it​​ The header and all payloads of my protocol. The message I want to parse is similar to the following: header(payload A, payload B,…) The fields in the header specify which type of payload the message has.

I have successfully parsed the first message in the bytestring, but I am at a loss as to how to read the next message and discarded the bytes read when processing the first message.

p>

This may be quite vague, but I would rather get the input of a generic parser than let my ugly code change to work this way.

Thank you for your help< /p>

Just use a series of parsing operations, and they will consume input.

parseAll = do
 hdr <- parseHeader
 pa <- parsePayloadA
 pb <- parsePayloadB
 ...