address of ua1 -> Contact
But,
response path is Via header.
As bis09, From and To don't accept
port.
t:sip:[EMAIL PROTECTED]:5060
==> t:sip:[EMAIL PROTECTED]
khlee
-----Original Message-----
From:
[EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of luoqiang
Sent: Thursday, March 28, 2002 1:34 AM
To:
[EMAIL PROTECTED]
Subject: [Sip-implementors] A basic sip
question
Hi,
I am a beginer for sip.
After reading the
rfc,I have some questions.
e.g:
ua1:
sip:[EMAIL PROTECTED]:5060
ua2: sip:[EMAIL PROTECTED]:5061
when ua1 call
ua2,the message would be:
INVITE sip:[EMAIL PROTECTED]:5061
SIP/2.0
v:SIP/2.0/UDP
10.10.1.1
f:sip:[EMAIL PROTECTED]
t:sip:[EMAIL PROTECTED]:5060
i:[EMAIL PROTECTED]
m:[EMAIL PROTECTED]:5061
c:application/sdp
Suppose there are no proxies between them.
The
message should be forworded to ua2 and ua2 should send a 180 response.
But
where does the ua2 get the adress of ua1?
Via?From?Contact?
I
was puzzled after reading the rfc,because it seems that all above headers is
correct.
Which is the ua2's
chioce?
Thanks!
luoqiang
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