I have an script using variables, hope it can give you some hints.
The related part is :
<scenario name="INVITE with Auth UAC">
<send retrans="500" start_txn="invite">
<![CDATA[
INVITE sip:[field3]@[field1]:[remote_port] SIP/2.0
Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
From: sipp <sip:sipp@
[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
To: sut <sip:[field3]@[field1]:[remote_port]>
Call-ID: [call_id]
CSeq: [cseq] INVITE
Contact: <sip:sipp@[local_ip]:[local_port]>
Max-Forwards: 70
Subject: Performance Test
User-Agent: SIPp Tester
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY,
INFO, PUBLISH
Content-Type: application/sdp
Content-Length: [len]
v=0
o=user1 53655765 2353687637 IN IP[local_ip_type] [local_ip]
s=-
c=IN IP[media_ip_type] [media_ip]
t=0 0
m=audio [media_port] RTP/AVP 0
a=rtpmap:0 PCMU/8000
]]>
</send>
<recv response="100" optional="true" rrs="true" response_txn="invite">
</recv>
<!-- grab the Contact Header's URI for use in the response ACK -->
<recv response="401" auth="true" rrs="true" response_txn="invite">
<action>
<ereg regexp= "sip:[^;>]+" search_in="hdr"
header="Contact:" assign_to="2" />
</action>
</recv>
<!-- decrement the branch by 3 to match the above INVITE's branch -->
<send ack_txn="invite">
<![CDATA[
ACK sip:[field3]@[$2] SIP/2.0
Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch-3]
From: sipp <sip:sipp@
[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
[last_To]
[routes]
Call-ID: [call_id]
CSeq: [cseq] ACK
Contact: <sip:sipp@[local_ip]:[local_port]>
Max-Forwards: 70
Subject: Performance Test
User-Agent: SIPp Tester
Content-Length: 0
]]>
</send>
In this example it searches in Contact header and assigns value to variable
2, then sends ACK by judging the 2's value.
But can you modify the date and timestamp?
Cheng Kun
2014-09-29 12:15 GMT+08:00 Paul Miller <idkpmil...@sip2serve.com>:
> Hi,
> I am currently using SIPp 3.4.1 and I trying to emulate a UAS which uses
> the Date: and Timestamp: header in its messaging. Is there a way to
> populate this header with an internal variable/keyword that will be
> populated by SIPp when the scenario is run?
> If not can you consider adding support for date and timestamp header?
>
> Example header format below:
>
> *Date: Mon, 22 Sep 2014 04:00:49 GMT*
> *Timestamp: 1411358460*
>
> Thanks
>
> Paul
>
>
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