Name: draft-jennings-sipping-outbound-00
Title: SIP Conventions for Connection Usage
State: Active
Authors: Cullen Jennings, Alan Hawrylyshen
Group: Individual Submissions (none)
Date: 2004-10-19
SIP has many situations where a request can only be routed over an existing
connection. This can arise in cases with firewall or network address
translation (NAT) devices in the network path, over both UDP and TCP. TLS
is also affected when the user agent (UA) does not have a certificate
suitable for mutual TLS authentication. This draft addresses how user
agents and proxies need to behave to work in these environments, and
addresses keep-alive and DNS configuration issues required for high
reliability connections in situations where the UA can form connections to
the proxy but the reverse is not generally true. This work is being
discussed on the sipping@ietf.org mailing list.
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