I am seeing the port number being truncated by SIPp in the response to
401 challenge from the S-CSCF, see  the trace below please.

Is there a limit in the header length?  If so, can I change the limit?

Appreciate any help.

Regards,
Venkat
---------

UDP message received [587] bytes :
SIP/2.0 401 Unauthorized^M
Call-ID: 3-17...@125.2.180.61^m
Via: SIP/2.0/UDP 125.2.180.61:5060;received=125.2.180.61^M
To: <sip:+14032200...@sipims1.labnet.mysip.com>;tag=4c471ade-127973001117972^M
From: <sip:+14032200...@sipims1.labnet.mysip.com>;tag=3^M
CSeq: 1 REGISTER^M
Date: Wed, 21 Jul 2010 16:33:31 GMT^M
Server: Lucent-HPSS/3.0.3^M
WWW-Authenticate: Digest realm="sipims1.labnet.mysip.com",^M
   nonce="b7c9036dbf3054aea9404c47215ae9703dc8f84c2008",^M
   opaque="Mss:scscf-appl.imswork0-013.node0.sipims1.labnet.mysip.com:5060",^M
=========== S-CSCF sends port number 5060 ==============
   algorithm=MD5,^M
   qop="auth"^M
Content-Length: 0^M
^M
----------------------------------------------- 2010-07-21 16:28:29:935.786
UDP message sent (753 bytes):
REGISTER sip:sipims1.labnet.mysip.com SIP/2.0^M
Via: SIP/2.0/UDP 125.2.180.61:5060^M
From: <sip:+14032200...@sipims1.labnet.mysip.com>;tag=3^M
To: <sip:+14032200...@sipims1.labnet.mysip.com>^M
Contact: sip:+14032200...@125.2.180.61:5060^M
Call-ID: 3-17...@125.2.180.61^m
CSeq: 2 REGISTER^M
Authorization: Digest 
username="priv4032200...@private.net",realm="sipims1.labnet.mysip.com",cnonce="46e87ccd",nc=00000001,qop=auth,uri="sip:125.2.246.230:5060",nonce="b7c9036dbf3054aea9404c47215ae9703dc8f84c2008",response="253c7d55f6b86794efc65c5123416156",algorithm=MD5,opaque="Mss:scscf-appl.imswork0-013.node0.sipims1.labnet.mysip.com:506"^M

============ SIPp seems to truncate the port number, dropping the last zero in 
5060 =========
Expires: 7200^M
Max-Forwards: 70^M
Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE^M
Content-Length: 0^M
^M
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