Re: [Haskell-beginners] Still wrestling with lazy IO

I think, you're right. I read the ByteString from the handle using hGetContents, which then waits for eof, which I don't send apparently. Is there a way to do this explicitely? Raf On 6/19/11, Chaddaï Fouché wrote:

On Sat, Jun 18, 2011 at 10:26 PM, Raphael Päbst wrote:

...

Mainly I'd say it's that I want to send the answer back via the same handle. That's where the problem comes from, I suspect. Since it is lazy IO, it only evaluates, once the handle gets closed from the client side. And then it is too late to send something back. At least that's how I understand it.

No it don't work like that, what's more probably happening is that your program is structured so that the answer can't be created until the "end" of the "request" is read and this "end" won't appear until eof has been received. You should make it explicit in your request that it is finished (send two empy lines at the end of the request for instance). If you don't manage to do that, show us your code so that we could point out your mistake.

-- JedaÏ