[Sip] I-D ACTION:draft-ietf-sip-connect-reuse-07.txt

A New Internet-Draft is available from the on-line Internet-Drafts 
directories.
This draft is a work item of the Session Initiation Protocol Working Group of the IETF.

	Title		: Connection Reuse in the Session Initiation 
                          Protocol (SIP)
	Author(s)	: R. Mahy, et al.
	Filename	: draft-ietf-sip-connect-reuse-07.txt
	Pages		: 20
	Date		: 2006-10-19

When SIP entities use a connection oriented protocol to send a
   request, they typically originate their connections from an ephemeral
   port.  The SIP protocol includes mechanisms which ensure that
   responses to a request, and new requests sent in the original
   direction reuse an existing connection.  However, new requests sent
   in the opposite direction are unlikely to reuse the existing
   connection.  For TLS transports, this will frequently cause a pair of
   SIP entities to use one connection for requests sent in each
   direction, resulting in potential scaling and performance problems.
   This document proposes that a TLS connection, once opened, can be
   used to send requests in either direction.  Unfortunately, TCP
   connections cannot be shared in the same manner due to the risk of
   service hijacking.  This document proposes an alternate way to
   perform TCP connection reuse.

A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-sip-connect-reuse-07.txt

To remove yourself from the I-D Announcement list, send a message to 
i-d-announce-request@ietf.org with the word unsubscribe in the body of 
the message. 
You can also visit https://www1.ietf.org/mailman/listinfo/I-D-announce 
to change your subscription settings.

Internet-Drafts are also available by anonymous FTP. Login with the 
username "anonymous" and a password of your e-mail address. After 
logging in, type "cd internet-drafts" and then 
"get draft-ietf-sip-connect-reuse-07.txt".

A list of Internet-Drafts directories can be found in
http://www.ietf.org/shadow.html 
or ftp://ftp.ietf.org/ietf/1shadow-sites.txt

Internet-Drafts can also be obtained by e-mail.

Send a message to:
	mailserv@ietf.org.
In the body type:
	"FILE /internet-drafts/draft-ietf-sip-connect-reuse-07.txt".

NOTE:	The mail server at ietf.org can return the document in
	MIME-encoded form by using the "mpack" utility.  To use this
	feature, insert the command "ENCODING mime" before the "FILE"
	command.  To decode the response(s), you will need "munpack" or
	a MIME-compliant mail reader.  Different MIME-compliant mail readers
	exhibit different behavior, especially when dealing with
	"multipart" MIME messages (i.e. documents which have been split
	up into multiple messages), so check your local documentation on
	how to manipulate these messages.

Below is the data which will enable a MIME compliant mail reader
implementation to automatically retrieve the ASCII version of the
Internet-Draft.