We have found a firewall or transparent proxy that seems to selectively
block SIP 200 responses on TCP connections. All other SIP requests and
responses go through, but the 200 gets blocked. One far-fetched
suspicion is that the proxy or firewall checks for HTTP responses and
then gets confused by the similar-looking 200 OK response (but ignores
the other non-2xx responses since those would be useless for caching).
Does anybody know of such a beast?
Henning
Schulzrinne
_______________________________________________
Sip-implementors mailing list
[EMAIL PROTECTED]
http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
