Thanks for your explanations. On Jun 27, 2012 4:58 PM, "Brett Tate" <[email protected]> wrote:
> > What is the difference between 408 and 504 responses? > > The following are from RFC 3261. However because RFC 4320 unfortunately > deprecated the 408 for non-INVITE requests (even when the reason cited was > not applicable), you might see 504 or other status-codes more frequently > used as an alternative when a 408 actually would have been more > appropriate. My concerns about the deprecation were raised during the > following the thread: > http://www.ietf.org/mail-archive/web/sipcore/current/msg02421.html > > 21.4.9 408 Request Timeout > > The server could not produce a response within a suitable amount of > time, for example, if it could not determine the location of the user > in time. The client MAY repeat the request without modifications at > any later time. > > 21.5.5 504 Server Time-out > > The server did not receive a timely response from an external server > it accessed in attempting to process the request. 408 (Request > Timeout) should be used instead if there was no response within the > period specified in the Expires header field from the upstream > server. > > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
