[TLS] Text for draft-ietf-tls-rfc4366-bis

["Joseph Salowey (jsalowey)" <[e-mail]>]

Below is some proposed text for inclusion in section 3 of
draft-ietf-tls-rfc4366-bis. The text now clarifies that the server name
can be used by the server in looking up the cached session.   Please
respond to the list with any issues or improvements to the text.  

Thanks,

Joe

New text in section 3 to replace "When the server resumes a session, the
server_name extension is ignored.":

"When the server resumes a session, the contents of server_name
extension may be used in the lookup of the session in the session cache.
The client SHOULD include the same server_name extension during session
resumption as it did in the full handshake that established the session.
The client MAY omit the extension, in which case, if the server chooses
to resume the session it must use the server name cached from the
original full handshake.  The client MUST NOT include a different server
name than what is included in the original full handshake.  If the
server_name extension contains a different name the server MUST NOT
allow the session to be resumed.  Instead, it proceeds with a full
handshake to establish a new session. When resuming a session, the
server MUST NOT include a server_name extension in the server hello."

In addition the end of section 1.1 needs some modification to the last
paragraph and bullet points: 

"Note also that all the extensions defined in this document are
 relevant only when a session is initiated.  When a client includes
 one or more of the defined extension types in an extended client
 hello while requesting session resumption:

      -  If the resumption request is denied, the use of the extensions
         is negotiated as normal.

	-  The server name indication extension MAY be used during the 
         lookup of a cached session as described in section 3. 

      -  If, on the other hand, the older session is resumed, then the
         server MUST ignore the extensions and send a server hello
         containing none of the extension types.  In this case, the
         functionality of these extensions negotiated during the
         original session initiation is applied to the resumed session."

Cheers,

Joe