Fast I/O with sockets

Peter Simons simons at
Wed Sep 17 19:48:14 EDT 2003

Simon Marlow writes:

 > hGetLine should work fine, indeed that's what I used in the Haskell
 > Web Server.

Well, another -- and more important -- problem with hGetLine is that
it will read an arbitrarily long line. An attacker might use this to
implement an denial-of-service attack simply by sending excessively
long lines, thus overflowing the stack / heap.

IMHO asynchronous hGetBuf / hPutBuf functions would really be the best
solution. (Or a way to set a read timeout for hGetContents ...)


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