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Re: SSL read error 10054

From: Daniel Stenberg <>
Date: Fri, 5 Oct 2012 23:10:01 +0200 (CEST)

On Mon, 1 Oct 2012, Jeff McKay wrote:

> There is an approximately 2 minute delay from the time of the POST to when
> the error occurs. I understand that the error 10054 comes from the
> underlying tcp layer and means that the peer shut down the connection, so at
> first glance this does not seem to be a libcurl problem. However this
> customer is also using a previous version of our software, which uses a much
> older libcurl (not sure which version, but at least 3 years earlier than
> 7.26). And of course the error does not happen with that version. There may
> be some other differences in the curl options we set, but very little, if
> any. This customer is using a proxy server, if that has any bearing. Does
> anybody have an idea what could cause this error, that is under my control
> to fix?

The source code that holds most of the OpenSSL code is lib/ssluse.c and it
hasn't change much the last years. But of couse I don't think I can exclude
that one of the changes actually did introduce this!

If they use a three years different libcurl version, don't they also use a
different OpenSSL version then that also could explain the different behavior?

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Received on 2012-10-05