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RE: Many CLOSE_WAIT when handling lots of URLs

From: Daniel Stenberg <>
Date: Tue, 11 Feb 2014 23:24:00 +0100 (CET)

On Tue, 11 Feb 2014, Shao, Shuchao wrote:

> The option CURLMOPT_MAXCONNECTS is not used at all in libcurl. It just parse
> the value to multi->maxconnects, but no function use this value to limit the
> connection numbers.

That's plain incorrect. Read the code again.

> I also check the code before the commit d021f2e8a00

There's really no point in that. Work with what we have now instead.

> Seems there is no opportunity to close the connection in the cache until
> call the cleanup function?

ConnectionDone() ?

> May be this is the cause of the many CLOSE_WAIT issue?

I can't rule out that there's a bug somewhere but it isn't as simple as you
claim here.

I believe your primary problem is due to you not using libcurl properly.

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Received on 2014-02-11