System and method for determining trust for SIP messages
A method for performing initial registration is provided. The method includes receiving a server timeout message, the server timeout message including at least a field set to a value equal to a value received during a first registration. The method further includes initiating restoration procedures by performing an initial registration.
1. A method in a user agent (UA) for identifying an originator of a Session Initiation Protocol (SIP) reject response, the method comprising:
sending a SIP request; and
receiving, from the originator, the SIP reject response to the SIP request, the SIP reject response including an indicator comprising a parameter “fe”, wherein one of a plurality of types of network nodes is assigned to the parameter “fe”, the parameter “fe” indicating a type of network node for the originator.
2. The method of claim 1 , wherein the indicator further comprises a Uniform Resource Identifier (URI).
3. The method of claim 1 , wherein the parameter “fe” identifies the one of the plurality of types of network nodes by name, wherein the name is one of a Proxy Call Session Control Function, a Serving Call Session Control Function, an Interconnect Border Control Function, or an Application Server.
4. The method of claim 1 , wherein the parameter “fe” identifies the one of the plurality of types of network nodes by acronym, wherein the acronym is one of P-CSCF, S-CSCF, IBCF, or AS.
5. The method of claim 1 , wherein the originator is a server.
6. The method of claim 1 , wherein the SIP reject response includes a SIP header, the SIP header including the indicator.
7. A user agent (UA) comprising:
a memory storing instructions; and
a processor configured to execute the instructions to cause the UA to:
send a Session Initiation Protocol (SIP) request; and
receive a SIP reject response to the SIP request, the SIP reject response including an indicator comprising a parameter “fe”, wherein one of a plurality of types of network nodes is assigned to the parameter “fe”, the parameter “fe” indicating a type of network node for an originator of the SIP reject response.
8. The UA of claim 7 , wherein the indicator further comprises a Uniform Resource Identifier (URI).
9. The UA of claim 7 , wherein the parameter “fe” identifies the one of the plurality of types of network nodes by name, wherein the name is one of a Proxy Call Session Control Function, a Serving Call Session Control Function, an Interconnect Border Control Function, or an Application Server.
10. The UA of claim 7 , wherein the parameter “fe” identifies the one of the plurality of types of network nodes by acronym, wherein the acronym is one of P-CSCF, S-CSCF, IBCF, or AS.
11. The UA of claim 7 , wherein the originator is a server.
12. The UA of claim 7 , wherein the SIP reject response includes a SIP header, the SIP header including the indicator.
13. A computer program product comprising instructions embodied on a non-transitory computer readable medium, the instructions, when executed by a processor of a user agent (UA), cause the UA to:
send a Session Initiation Protocol (SIP) request; and
receive a SIP reject response to the SIP request, the SIP reject response including an indicator comprising a parameter “fe”, wherein one of a plurality of types of network nodes is assigned to the parameter “fe”, the parameter “fe” indicating a type of network node for an originator of the SIP reject response.
14. The computer program product of claim 13 , wherein the indicator further comprises a Uniform Resource Identifier (URI).
15. The computer program product of claim 13 , wherein the parameter “fe” identifies the one of the plurality of types of network nodes by name, wherein the name is one of a Proxy Call Session Control Function, a Serving Call Session Control Function, an Interconnect Border Control Function, or an Application Server.
16. The computer program product of claim 13 , wherein the parameter “fe” identifies the one of the plurality of types of network nodes by acronym, wherein the acronym is one of P-CSCF, S-CSCF, IBCF, or AS.
17. The computer program product of claim 13 , wherein the originator is a server.
18. The computer program product of claim 13 , wherein the SIP reject response includes a SIP header, the SIP header including the indicator.