[reSIProcate] assert when SDP answer in ACK

[maodonghu]

resip

SDP answer received

ACK sip:8001 at 192.168.101.32:38004 SIP/2.0
Via: SIP/2.0/UDP 192.168.101.11:5060;branch=z9hG4bK5bffa7a7
Max-Forwards: 70
To: <sip:8001 at 192.168.101.32>;tag=594f1d17
From: "SIP Phone1"<sip:2201 at 192.168.101.11>;tag=2467243b-3932-431a-bb15-6ebe81e7af92-33462134
Call-ID: 61084f80-4ff1bae4-39-b65a8c0 at 192.168.101.11
CSeq: 101 ACK
Content-Type: application/sdp
Date: Thu, 07 Sep 2006 06:23:32 GMT
Allow-Events: presence
Content-Length: 216

v=0
o=CiscoSystemsCCM-SIP 2000 1 IN IP4 192.168.101.11
s=SIP Call
c=IN IP4 192.168.101.32
t=0 0
m=audio 37166 RTP/AVP 0 101
a=rtpmap:0 PCMU/8000
a=ptime:20
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
}
Assertion failed: !isRequest(), file .\SipMessage.cxx, line 1172
 				

　　　　　　　　maodonghu
　　　　　　　　hhmmdd at tom.com
　　　　　　　　　　2006-09-07