What version/revision number of mod_spdy are you using?

https://dl-ssl.google.com/dl/linux/direct/mod-spdy-beta_current_amd64.deb

What version of Apache are you using, and on what operating system? (Use apache2ctl -v to check.)

Server version: Apache/2.2.16 (Debian) Server built: Apr 1 2012 07:14:38

What other Apache modules are you using? (Use apache2ctl -M to check.)

Loaded Modules: core_module (static) log_config_module (static) logio_module (static) mpm_prefork_module (static) http_module (static) so_module (static) alias_module (shared) auth_basic_module (shared) authn_file_module (shared) authz_default_module (shared) authz_groupfile_module (shared) authz_host_module (shared) authz_user_module (shared) autoindex_module (shared) cgi_module (shared) dav_module (shared) dav_svn_module (shared) authz_svn_module (shared) deflate_module (shared) dir_module (shared) env_module (shared) expires_module (shared) fcgid_module (shared) gnutls_module (shared) mime_module (shared) negotiation_module (shared) php5_module (shared) reqtimeout_module (shared) rewrite_module (shared) setenvif_module (shared) spdy_module (shared) status_module (shared)

What steps will reproduce the problem? 1. Start Apache server with GnuTLS enabled. 2. Check /var/log/apache2/error.log for error messages related to .

What is the expected result? What do you see instead mod-spdy?

mod-spdy should have been loaded successfully. Instead, it complains that mod_ssl is not installed.

Please provide any additional information below.

It seems that mod-spdy currently depends on mod_ssl. However, GnuTLS provides HTTP with SSL/TLS as well.

Good point. It would be great for mod_spdy to be able to work with either of mod_ssl or mod_gnutls.

Unfortunately, I do not believe this is possible at the moment. The SPDY protocol depends on support for the Next Protocol Negotiation (NPN) TLS extension. OpenSSL (the TLS implementation used by mod_ssl) provides NPN support as of version 1.0.1, but as nearly as I can tell, GnuTLS (the TLS implementation used by mod_gnutls) does not yet support NPN: http://lists.gnu.org/archive/html/gnutls-devel/2012-03/msg00103.html

Once there is a GnuTLS release supporting NPN, it would probably be possible to patch mod_gnutls to add NPN hooks, as we have done for mod_ssl, and then it would probably be possible to get mod_spdy to support mod_gnutls. However, all that may be a ways down the road.

I would like to see mod_spdy supporting GnuTLS as well. If mod_spdy would support GnuTLS, I would install it on my servers.