draft-ietf-sipcore-keep-00.txt   draft-ietf-sipcore-keep-01.txt 
SIPCORE Working Group C. Holmberg SIPCORE Working Group C. Holmberg
Internet-Draft Ericsson Internet-Draft Ericsson
Intended status: Informational May 4, 2009 Intended status: Informational December 1, 2009
Expires: November 5, 2009 Expires: June 4, 2010
Indication of support for keep-alive Indication of support for keep-alive
draft-ietf-sipcore-keep-00.txt draft-ietf-sipcore-keep-01.txt
Abstract
This specification defines a new SIP Via header parameter, "keep"
which SIP entities can use to indicate support of the NAT keep-alive
techniques defined in SIP Outbound, in cases where the Outbound
procedures are not supported or cannot be applied.
Status of this Memo Status of this Memo
This Internet-Draft is submitted to IETF in full conformance with the This Internet-Draft is submitted to IETF in full conformance with the
provisions of BCP 78 and BCP 79. provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet- other groups may also distribute working documents as Internet-
Drafts. Drafts.
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and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at The list of current Internet-Drafts can be accessed at
http://www.ietf.org/ietf/1id-abstracts.txt. http://www.ietf.org/ietf/1id-abstracts.txt.
The list of Internet-Draft Shadow Directories can be accessed at The list of Internet-Draft Shadow Directories can be accessed at
http://www.ietf.org/shadow.html. http://www.ietf.org/shadow.html.
This Internet-Draft will expire on November 5, 2009. This Internet-Draft will expire on June 4, 2010.
Copyright Notice Copyright Notice
Copyright (c) 2009 IETF Trust and the persons identified as the Copyright (c) 2009 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents in effect on the date of Provisions Relating to IETF Documents
publication of this document (http://trustee.ietf.org/license-info). (http://trustee.ietf.org/license-info) in effect on the date of
Please review these documents carefully, as they describe your rights publication of this document. Please review these documents
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Abstract include Simplified BSD License text as described in Section 4.e of
the Trust Legal Provisions and are provided without warranty as
This specification defines a new SIP Via header parameter, "keep" described in the BSD License.
which SIP entities can use to indicate support of the NAT keep-alive
techniques defined in SIP Outbound, in cases where the Outbound
procedures are not supported or cannot be applied.
Table of Contents Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. Conventions . . . . . . . . . . . . . . . . . . . . . . . . . 3
3. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 4 3. Definitions . . . . . . . . . . . . . . . . . . . . . . . . . 4
4. Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 4 4. Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 4
5. Client behavior . . . . . . . . . . . . . . . . . . . . . . . 4 5. Client behavior . . . . . . . . . . . . . . . . . . . . . . . 4
6. Server behavior . . . . . . . . . . . . . . . . . . . . . . . 5 6. Server behavior . . . . . . . . . . . . . . . . . . . . . . . 5
7. Proxy behavior . . . . . . . . . . . . . . . . . . . . . . . . 6 7. Proxy behavior . . . . . . . . . . . . . . . . . . . . . . . . 6
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Requirement Levels", BCP 14, RFC 2119, March 1997. Requirement Levels", BCP 14, RFC 2119, March 1997.
[RFC3261] Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston, [RFC3261] Rosenberg, J., Schulzrinne, H., Camarillo, G., Johnston,
A., Peterson, J., Sparks, R., Handley, M., and E. A., Peterson, J., Sparks, R., Handley, M., and E.
Schooler, "SIP: Session Initiation Protocol", RFC 3261, Schooler, "SIP: Session Initiation Protocol", RFC 3261,
June 2002. June 2002.
13.2. Informative References 13.2. Informative References
[I-D.ietf-sip-outbound] [I-D.ietf-sip-outbound]
Jennings, C. and R. Mahy, "Managing Client Initiated Jennings, C., "Managing Client Initiated Connections in
Connections in the Session Initiation Protocol (SIP)", the Session Initiation Protocol (SIP)",
draft-ietf-sip-outbound-16 (work in progress), draft-ietf-sip-outbound-20 (work in progress), June 2009.
October 2008.
[I-D.ietf-behave-rfc3489bis] [I-D.ietf-behave-rfc3489bis]
Rosenberg, J., Mahy, R., Matthews, P., and D. Wing, Rosenberg, J., Mahy, R., Matthews, P., and D. Wing,
"Session Traversal Utilities for (NAT) (STUN)", "Session Traversal Utilities for (NAT) (STUN)",
draft-ietf-behave-rfc3489bis-18 (work in progress), draft-ietf-behave-rfc3489bis-18 (work in progress),
July 2008. July 2008.
[I-D.ietf-sip-connect-reuse] [I-D.ietf-sip-connect-reuse]
Gurbani, V., Mahy, R., and B. Tate, "Connection Reuse in Gurbani, V., Mahy, R., and B. Tate, "Connection Reuse in
the Session Initiation Protocol (SIP)", the Session Initiation Protocol (SIP)",
draft-ietf-sip-connect-reuse-13 (work in progress), draft-ietf-sip-connect-reuse-14 (work in progress),
March 2009. August 2009.
Author's Address Author's Address
Christer Holmberg Christer Holmberg
Ericsson Ericsson
Hirsalantie 11 Hirsalantie 11
Jorvas 02420 Jorvas 02420
Finland Finland
Email: christer.holmberg@ericsson.com Email: christer.holmberg@ericsson.com
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