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<body class='hmmessage'><div dir='ltr'>Thanks for your answer!<div><br></div><div>Have you got a C example using the CONNECT request to the proxy?</div><div>In this case I want to avoid NAT.</div><div><br></div><div>It helped a lot!</div><div>Thanks.</div><div><br><div><hr id="stopSpelling">To: openssl-users@openssl.org<br>From: ted@convey.de<br>Date: Thu, 28 Jan 2016 12:47:48 +0100<br>Subject: Re: [openssl-users] Acessing a proxy with OpenSSL<br><br>
<div class="ecxmoz-cite-prefix">Am 28.01.2016 um 12:02 schrieb Marcos
Bontempo:<br>
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<blockquote cite="mid:BLU168-W269DF062F6F3520DB05932CEDA0@phx.gbl">
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<div>Hello,</div>
<div><br>
</div>
<div>I'm using this example to make a SSL connection:
<a class="ecxmoz-txt-link-freetext" href="http://fm4dd.com/openssl/sslconnect.htm" target="_blank">http://fm4dd.com/openssl/sslconnect.htm</a>.</div>
<div>Now I want to also acess a HTTPS proxy. Is there a way to
acess a HTTPS proxy with the OpenSSL library?</div>
<div><br>
</div>
<div>Any tip will be very helpful,</div>
<div>Thanks.</div>
</div>
</blockquote>
<br>
See <a class="ecxmoz-txt-link-freetext" href="http://wiki.squid-cache.org/Features/HTTPS" target="_blank">http://wiki.squid-cache.org/Features/HTTPS</a> and
<a class="ecxmoz-txt-link-freetext" href="http://tools.ietf.org/rfc/rfc2817" target="_blank">http://tools.ietf.org/rfc/rfc2817</a>.<br>
<br>
AFAIK OpenSSL does not provide specific support for SSL via proxy,
but you can set up a SSL connection using the CONNECT request to the
proxy.<br>
<br>
Using a proxy for SSL connection does not make sense if you want to
take advantage of a proxy's caching feature, since these CONNECT
requests cannot be cached. This is by design.<br>
<br>
Using a proxy for SSL can be useful if you want to avoid NAT, or
want to log, or filter, the connection targets.<br>
<br>
Hope this helps,<br>
Ted<br>
;)<br>
<pre class="ecxmoz-signature">--
PGP Public Key Information
Key ID = 7AFB8D26
Key fingerprint = 31B0 E029 BCF9 6605 DAC1 B2E1 0CC8 70F4 7AFB 8D26
</pre>
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