Opened 15 years ago

Last modified 15 years ago

#917 closed defect

CANCEL may be sent to different servers than the INVITE when DNS SRV is used (thanks Alexei Kuznetsov for the report) — at Initial Version

Reported by: bennylp Owned by: bennylp
Priority: normal Milestone: release-1.5
Component: pjsip Version: trunk
Keywords: Cc:
Backport to 1.x milestone: Backported:

Description

RFC 3263 says:

the ACK for non-2xx SIP responses to INVITE MUST be sent to the same host. Furthermore, a CANCEL for a particular SIP request MUST be sent to the same SIP server that the SIP request was delivered to.

With PJSIP, CANCEL initiates a fresh DNS SRV hence it's possible that it may resolve to different server than the original INVITE.

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