[reSIProcate] DUM and ending InviteSessions

[Scott Godin <slgodin@xxxxxxxxxxxx>]

Hi Guys,

 

I’ve noticed something that may need correct in DUM – I just want to make sure I’m right with these statements before proceeding:

1. The ClientInviteSession should not throw an exception if end() is called in the Proceeding state – it should send a CANCEL.
2. The UAS – ServerInviteSession currently will send a BYE (via end()) in the Accepting State – but I’m pretty sure this is not valid – it needs to wait until it transitions into the Connected state (ie. Receives the ACK) before it can send the BYE.… Some quotes from RFC3261:

 

RFC3261 – 13.2.2 – “If the 2xx contains an offer (based on the

rules above), the ACK MUST carry an answer in its body. If the offer in the 2xx response is not acceptable,

the UAC core MUST generate a valid answer in the ACK and then send a BYE immediately.”

 

RFC3261 – 15 – “A UA MUST NOT send a BYE outside of

a dialog. The caller’s UA MAY send a BYE for either confirmed or early dialogs, and the callee’s UA MAY

send a BYE on confirmed dialogs, but MUST NOT send a BYE on early dialogs. However, the callee’s UA

MUST NOT send a BYE on a confirmed dialog until it has received an ACK for its 2xx response or until the

server transaction times out.”

 

If I’m right - any thoughts on how to deal with this?

 

 

Scott Godin

Research and Development

Computer Talk Technology

slgodin@xxxxxxxxxxxx