> > > > > > > > Hi, > > > > > > I have similar questions on Retransmission over TCP, Section 14.4.2, > > bis-4. > > > Suppose the following scenario. > > > > > > [A] --- TCP---- [Proxy1]------UDP ----- [Proxy2] ----TCP------[B] > > > > > > (1) A sends an INVITE which gets eventually proxied to B. B doens't send > > > any response. > > > Does Proxy1 retransmit INVITE following retransmission algorithms used > > for > > > UDP? > > > > >Yes, if it is a stateful proxy. > > > > I thought a proxy supporting TCP must be a stateful proxy because of the > > required retransmission support. > > In bis-04, Section 17.3, it states that: > > > > "Proxies that accept TCP connections MUST be stateful when handling the > TCP > > connection... > > Otherwise, if the proxy were to lose a request, the TCP client would never > > retransmit it." > > That is true. I was looking at only the UDP side. Although, some > implementors might interpret the spec as allowing statefulness on the TCP > side and statelessness on the UDP side. That may be legal, but certainly > unwise. I agree with you from an implementor's perspective. However, since TCP support is MUST for proxies, wouldn't that rule out the existence of stateless-proxy? Cheers, --Sunil _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
