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From: bugzilla@apache.org
To: bugs@httpd.apache.org
Subject: DO NOT REPLY [Bug 39243]  - Can't post files larger than 128k onto
 ssl client cert secured site
In-Reply-To: <bug-39243-7868@http.issues.apache.org/bugzilla/>
Message-Id: <20060724113721.0A8F7714283@brutus.apache.org>
Date: Mon, 24 Jul 2006 11:37:21 +0000 (GMT)

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http://issues.apache.org/bugzilla/show_bug.cgi?id=39243


------- Additional Comments From p.c.c.wagemans@kpn.com  2006-07-24 11:37 -------
Will Rowe wrote:

> The obvious answer for an 'upload' style operation is to ensure they
> never hit your upload page without going through a simpler front
> page which first enforces the renegotation.  This can be your upload
> form page.

> Once the session is SSLClientVerify'ed it won't renegotate -again-
> so this problem won't occur.

This can work for interactive applications, but there are common
situations without upload page: an application that wants to submit
data to the web server in a SOAP POST request.


Note: the above proposal for using an upload page request to
renegotiate for the client certificate appears to work only with
"SSLVerifyClient none" but not with "SSLVerifyClient optional" at top
level. In the last case a renegotiation is performed on the subsequent
form POST even when a client certificate is already present. Thus you
again run into the 128K limit. This is probably explained by the
following code in ssl_engine_kernel.c, which only treats "none" as a
special case:

        /* optimization */

        if ((dc->nOptions & SSL_OPT_OPTRENEGOTIATE) &&
            (verify_old == SSL_VERIFY_NONE) &&
            ((peercert = SSL_get_peer_certificate(ssl)) != NULL))
        {
            renegotiate_quick = TRUE;
            X509_free(peercert);
        }

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