... correcting myself ... Am 25.05.2010 11:40, schrieb Klaus Darilion: > Hi! > > I have a scenario where a presence agents only performs registration > (otherwise the SBC does not allow messages from this client) and sends > PUBLISH requests. > > Thus, this SIP client only sends REGISTER and PUBLISH, and is not > willing to accept any SIP requests. > > Thus, I wonder if it is correct to signal an empty Allow header > Allow: > in the REGISTER request to avoid incoming methods. > > According to ABNF it should be allowed. So is this the preferred way or > is there a better choice?
I just found out that the OPTIONS request is mandatory for all SIP user agents. Thus, although an empty Allow header is correct from ABNF point of view, it is not valid from application point of view. Therefore I think the client should send: Allow: OPTIONS and needs to handle incoming OPTIONS requests. regards Klaus _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
