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Re: Issues with http proxy requests with 7.79.0

From: Abhinav Singhal via curl-library <>
Date: Tue, 21 Sep 2021 03:07:55 -0400

I was told by IT that they do see me trying to go to via the proxy,
but it never makes it to the proxy, as it gets denied with a ERR_ACCESS_DENIED.
Since I have two clients differing only in the libcurl versions (7.71.1 and
7.79.0), interacting with the same server, one successfully, and the other
unsuccessfully, I thought of checking with you all if any parameter from
the client side request seems missing from the list of curl_easy_setopt I
sent in the first email. I'll try finding out more information from them
tomorrow, but in the meantime, do the curl_easy_setopt options seem ok?

On Tue, Sep 21, 2021 at 2:34 AM Dan Fandrich via curl-library <> wrote:

> On Tue, Sep 21, 2021 at 02:03:00AM -0400, Abhinav Singhal wrote:
> > That's correct. 7.71.1 returns HTTP 403 (requested resource is
> forbidden; the
> > server understood the request, but will not fulfill it), which is what I
> want
> > for 7.79.0, but the server side logs only shows ERR_ACCESS_DENIED for
> 7.79.0,
> > with the error message HTTP proxy configuration is invalid. Reason:
> > Empty reply from server returned to the client.
> So, have looked at a trace of the requests? What's different between the
> two?
> It sounds like the remote server is the one returning something different.
> --
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Received on 2021-09-21