[Haskell-cafe] `Expect'-like lazy reading/Parsec matching on TCP sockets

Hello all, I'm writing an application to interact with other applications remotely though TCP sockets (primarily), and in the future with local apps also. So far I have a Parsec parser to match the input that I want to see, which works if the remote connection is particularly speedy - but the final goal is to obtain the following behavior: Match the Parsec parser against the input as soon as a match is available, but fail if the match is unavailable after a timeout value if no further data is available on the socket. The parser will be matching some input pattern such as (string "login:"), for example. What's the best approach to take while leveraging laziness if possible? Thanks, - Scott Bell