A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Session Initiation Proposal Investigation Working
Group of the IETF.
Title : Requirements for Connection Reuse in the Session
Initiation Protocol (SIP)
Author(s) : R. Mahy
Filename : draft-ietf-sipping-connect-reuse-reqs-00.txt
Pages : 11
Date : 2002-10-28
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 presents
requirements for addressing this shortcoming, and separately proposes
an example mechanism which addresses this deficiency.
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