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IETF RFC 3581
[ACTIVE]

An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing

Metadata

Publisher
IETF
Doc Type
Standard
Pages
13
Abstract
The Session Initiation Protocol (SIP) operates over UDP and TCP, among others. When used with UDP, responses to requests are returned to the source address the request came from, and to the port written into the topmost Via header field value of the request. This behavior is not desirable in many cases, most notably, when the client is behind a Network Address Translator (NAT). This extension defines a new parameter for the Via header field, called "rport", that allows a client to request that the server send the response back to the source IP address and port from which the request originated. [STANDARDS-TRACK]
Publication Date
2003-08-01
Status Note
Proposed Standard
DOI
10.17487/RFC3581
Link
https://doi.org/10.17487/RFC3581
Author(s)
Jonathan Rosenberg
Henning Schulzrinne
Keyword(s)
SIP, Symmetric Response Routing
Latest version of IETF RFC 3581

Document Versions — IETF RFC 3581

  • ▶ IETF RFC 3581 (2003-08-01)
    THIS DOC [ACTIVE] [LATEST VERSION]

Normative Reference(s)

Bibliographic Reference(s)

  • Mahy, R., "Requirements for Connection Reuse in the Session Initiation Protocol (SIP)", Work in Progress. EXTERNAL
  • IETF RFC 3424 [Active*]
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IETF RFC 3581, An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing. Available at https://doi.org/10.17487/RFC3581
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IETF RFC 3581, An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing. Available at https://doi.org/10.17487/RFC3581

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IETF RFC 3581, An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing. Available at https://doi.org/10.17487/RFC3581
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<span class="citation"><cite>IETF RFC 3581</cite>, An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing. Available at <a href="https://doi.org/10.17487/RFC3581" target="_blank" rel="noopener">https://doi.org/10.17487/RFC3581</a></span>

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IETF RFC 3581, An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing
doi: 10.17487/RFC3581
url: https://doi.org/10.17487/RFC3581
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<li>
<cite id="bib-rfc3581">IETF RFC 3581</cite>, An Extension to the Session Initiation Protocol (SIP) for Symmetric Response Routing
<span class="doi">10.17487/RFC3581</span>
</li>

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