Re: [Haskell] Re: [Haskell-cafe] ANNOUNCE: enumerator, an alternative iteratee package

On Sat, Aug 21, 2010 at 11:35, Gregory Collins wrote:

John Millikin writes:

...

I think the docs are wrong, or perhaps we're misunderstanding them. Magnus is correct.

Attached is a test program which listens on two ports, 42000 (blocking IO) and 42001 (non-blocking). You can use netcat, telnet, etc, to send it data. The behavior is as Magnus describes: bytes from hGetNonBlocking are available immediately, while hGet waits for a full buffer (or EOF) before returning.

"hSetBuffering handle NoBuffering"?

The implementation as it is is fine IMO.

Disabling buffering doesn't change the behavior -- hGet h 20 still doesn't return until the handle has at least 20 bytes of input available.