On 10/29/20 4:48 PM, Noah Mehl wrote:
Or the expectation is that the receiving side will send replies to port 5060 (which I guess is broken in Freeswitch sometimes?)
That is precisely the expectation, because dispatcher doesn't keep dedicated listeners for replies to its own OPTIONS requests.
That's what I meant about asymmetric signalling: it is completely legal to send from an actual port of Y while having a Via header that says "hit me back at port X". That's exactly what FS should do.
-- Alex