SSL_CLIENT_XXX is null

Hi all,

First of all, thanks for the very good job with openssl.  It really rocks !!

Now my question:
I'm trying to setup strong authentication via client certificate (belgian eid).
You can see my apache config

NameVirtualHost *
<VirtualHost *>
	ServerAdmin webmaster@localhost
	
	DocumentRoot /var/www/

    SSLEngine on
    SSLCertificateFile /etc/apache2/ssl/apache.pem
    SSLCertificateKeyFile /etc/apache2/ssl/apache.pem
    SSLVerifyClient optional_no_ca
    SSLVerifyDepth 5
    SSLCACertificateFile /etc/apache2/ssl/BelgiumRootCA.pem
    SSLOptions +FakeBasicAuth +ExportCertData +StdEnvVars +CompatEnvVars
#    SSLUserName SSL_CLIENT_S_DN_CN
    RequestHeader set SSL_CLIENT_DN %{SSL_CLIENT_DN}e
    RequestHeader set SSL_CLIENT_S_DN %{SSL_CLIENT_S_DN}e
    RequestHeader set SSL_CLIENT_S_DN_CN %{SSL_CLIENT_S_DN_CN}e
    RequestHeader set SSL_CLIENT_S_DN_S %{SSL_CLIENT_S_DN_S}e
    RequestHeader set SSL_SERVER_S_DN %{SSL_SERVER_S_DN}e
    RequestHeader set SSL_PROTOCOL %{SSL_PROTOCOL}e
    RequestHeader set MyHeader "coucou"

	<Directory />
		Options FollowSymLinks
		AllowOverride None
	</Directory>
	<Directory /var/www/>
		Options Indexes FollowSymLinks MultiViews
		AllowOverride None
		Order allow,deny
		allow from all
		# This directive allows us to have apache2's default start page
                # in /apache2-default/, but still have / go to the right place
                # Commented out for Ubuntu
                #RedirectMatch ^/$ /apache2-default/
	</Directory>

	ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
	<Directory "/usr/lib/cgi-bin">
		AllowOverride None
		Options ExecCGI -MultiViews +SymLinksIfOwnerMatch
		Order allow,deny
		Allow from all
	</Directory>

	ErrorLog /var/log/apache2/error.log

	# Possible values include: debug, info, notice, warn, error, crit,
	# alert, emerg.
	LogLevel info

	CustomLog /var/log/apache2/access.log combined
	ServerSignature On

    Alias /doc/ "/usr/share/doc/"
    <Directory "/usr/share/doc/">
        Options Indexes MultiViews FollowSymLinks
        AllowOverride None
        Order deny,allow
        Deny from all
        Allow from 127.0.0.0/255.0.0.0 ::1/128
    </Directory>
</VirtualHost>

I've a small PHP script that dumps all the HTTP headers.  All the HTTP
headers about the cient (SSL_CLIENT_XXX) contain (null) while
SSL_SERVER_S_DN and SSL_PROTOCOL are successfully populated.
What's wrong with what I've done.
I use my belgian eid on other website so the root cause is not at the
client side.  I also include my error.log that can maybe help you.  It
looks ok expect for the timeout but I don't know if I have to care
about it.

[Mon May 22 15:23:12 2006] [notice] Apache/2.0.54 (Ubuntu)
PHP/5.0.5-2ubuntu1.2 mod_ssl/2.0.54 OpenSSL/0.9.7g configured --
resuming normal operations
[Mon May 22 15:23:20 2006] [info] Connection to child 0 established
(server localhost.localdomain:443, client 127.0.0.1)
[Mon May 22 15:23:20 2006] [info] Seeding PRNG with 136 bytes of entropy
[Mon May 22 15:23:20 2006] [info] Initial (No.1) HTTPS request
received for child 0 (server localhost.localdomain:443)
[Mon May 22 15:23:27 2006] [info] Connection to child 0 closed with
standard shutdown(server localhost.localdomain:443, client 127.0.0.1)
[Mon May 22 15:23:27 2006] [info] Connection to child 1 established
(server localhost.localdomain:443, client 127.0.0.1)
[Mon May 22 15:23:27 2006] [info] Seeding PRNG with 136 bytes of entropy
[Mon May 22 15:23:27 2006] [info] Initial (No.1) HTTPS request
received for child 1 (server localhost.localdomain:443)
[Mon May 22 15:23:27 2006] [info] Subsequent (No.2) HTTPS request
received for child 1 (server localhost.localdomain:443)
[Mon May 22 15:23:42 2006] [info] (70007)The timeout specified has
expired: SSL input filter read failed.
[Mon May 22 15:23:42 2006] [info] Connection to child 1 closed with
standard shutdown(server localhost.localdomain:443, client 127.0.0.1)

Thanks in advance for your help

François
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