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-05.txt
Pages : 16
Date : 2006-3-7
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 insure 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. This frequently causes a pair of SIP entities to use one
connection for requests sent in each direction, and can result in
potential scaling and performance problems. This document proposes
requirements and a mechanism which address this deficiency in
environments where the connection could be opened in either
direction.
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