Gervase Markham wrote:
As most of you will know, supporting it in Apache requires changes to
OpenSSL (which we funded, and which went into version 0.9.8f) and to the
httpd itself.
I am certainly not one of those "most". I am not aware about
external funding for the pieces mentioned in the
CHANGES files in the dev 0.9.9 branch of openssl.
*) Add initial support for TLS extensions, specifically for the
server_name
extension so far. The SSL_SESSION, SSL_CTX, and SSL data
structures now
have new members for a host name. The SSL data structure has an
additional member SSL_CTX *initial_ctx so that new sessions can be
stored in that context to allow for session resumption, even after the
SSL has been switched to a new SSL_CTX in reaction to a client's
server_name extension.
New functions (subject to change):
SSL_get_servername()
SSL_get_servername_type()
SSL_set_SSL_CTX()
New CTRL codes and macros (subject to change):
SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
- SSL_CTX_set_tlsext_servername_callback()
SSL_CTRL_SET_TLSEXT_SERVERNAME_ARG
- SSL_CTX_set_tlsext_servername_arg()
SSL_CTRL_SET_TLSEXT_HOSTNAME - SSL_set_tlsext_host_name()
openssl s_client has a new '-servername ...' option.
openssl s_server has new options '-servername_host ...', '-cert2 ...',
'-key2 ...', '-servername_fatal' (subject to change). This allows
testing the HostName extension for a specific single host name ('-cert'
and '-key' remain fallbacks for handshakes without HostName
negotiation). If the unrecogninzed_name alert has to be sent, this by
default is a warning; it becomes fatal with the '-servername_fatal'
option.
[Peter Sylvester, Remy Allais, Christophe Renou]
