Session Timer not cleared after 488 and BYE

[rhondahollis]

I have a scenario where our webrtc client receives an INVITE that has an unsupported SDP (fax), so it responds to the INVITE with a 488 Not Acceptable Here, followed by a BYE. However, I still see Drachtio attempting to tear down the sip dialog due to session timer not being refreshed.

After the initial INVITE, session timer is set:
2023-09-13 18:38:33.931161 SipDialog::setSessionTimer: pnb0jcou6751in8ec9dr Session expires has been set to 90 seconds and refresher is them

Then on the next INVTE, 488 is received:

2023-09-13 18:38:39.030381 recv 353 bytes from wss/[x.x.x.x]:2336 at 18:38:39.030321:
SIP/2.0 488 Not Acceptable Here
Via: SIP/2.0/WSS x.x.x.x:8443;branch=z9hG4bKZHUUjgyBKDpHg
To: sip:redacted;tag=tsqcd2mlu0
From: <sip:redacted;tag=c1X8SNpevZ5Um
Call-ID: pnb0jcou6751in8ec9dr
CSeq: 3247 INVITE
Supported: timer,ice,replaces,outbound
Content-Length: 0

2023-09-13 18:38:39.030405 nta.c:3484 agent_recv_response() nta: received 488 Not Acceptable Here for INVITE (3247)
2023-09-13 18:38:39.030502 send 358 bytes to wss/[x.x.x.x]:2336 at 18:38:39.030454:
ACK sip:redacted;transport=ws;ob SIP/2.0
Via: SIP/2.0/WSS x.x.x.x:8443;branch=z9hG4bKZHUUjgyBKDpHg
Max-Forwards: 70
From: <sip:redacted;tag=c1X8SNpevZ5Um
To: sip:redacted;tag=tsqcd2mlu0
Call-ID: pnb0jcou6751in8ec9dr
CSeq: 3247 ACK
Content-Length: 0

2023-09-13 18:38:54.605946 recv 510 bytes from wss/[x.x.x.x]:2336 at 18:38:54.605830:
BYE sips:x.x.x.x:8443;transport=wss SIP/2.0
Via: SIP/2.0/WSS redacted;branch=z9hG4bK5995408
Max-Forwards: 69
To: <sip:redacted;tag=c1X8SNpevZ5Um
From: sip:redacted;tag=tsqcd2mlu0
Call-ID: pnb0jcou6751in8ec9dr
CSeq: 3247 BYE
Allow: INVITE,ACK,CANCEL,BYE,UPDATE,MESSAGE,OPTIONS,REFER,INFO,NOTIFY
Supported: outbound
Content-Length: 0

2023-09-13 18:38:54.606040 ClientController::removeDialog - after removing dialogs count is now: 563
2023-09-13 18:38:54.606637 send 323 bytes to wss/[x.x.x.x]:2336 at 18:38:54.606586:
SIP/2.0 200 OK
Via: SIP/2.0/WSS redacted;branch=z9hG4bK5995408;received=x.x.x.x;rport=2336
From: sip:redacted;tag=tsqcd2mlu0
To: <sip:redacted;tag=c1X8SNpevZ5Um
Call-ID: pnb0jcou6751in8ec9dr
CSeq: 3247 BYE
Content-Length: 0

023-09-13 18:40:03.931188 SipDialog::doSessionTimerHandling - tearing down sip dialog with call-id pnb0jcou6751in8ec9dr because remote peer did not refresh the session within the specified interval
2023-09-13 18:40:03.931249 nta.c:10308 outgoing_resolve() nta(0x55b7b2bd0000): transport ws is not supported
2023-09-13 18:40:03.931263 SipDialogController::notifyTerminateStaleDialog - created orq 0x55b7b2bd0000
2023-09-13 18:40:03.931283 ClientController::route_request_inside_dialog - client managing dialog has disconnected: pnb0jcou6751in8ec9dr;from-tag=tsqcd2mlu0
2023-09-13 18:40:03.931288 ClientController::removeDialog - dialog not found: pnb0jcou6751in8ec9dr;from-tag=tsqcd2mlu0