> When I get a 503 response with retry-after for REGISTER, > I start a timer for the time in retry-after header but > would like to know whether there is any upper limit that > I can have for this timer?
The UAC is not required to honor all or even part of the Retry-After time. RFC 3261 section 21.5.4 indicates a SHOULD NOT instead of a MUST NOT. "A client (proxy or UAC) receiving a 503 (Service Unavailable) SHOULD attempt to forward the request to an alternate server. It SHOULD NOT forward any other requests to that server for the duration specified in the Retry-After header field, if present." _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
