<div dir="ltr">Yes, good question. But it looks like OpenSER is inserting the duplicate From header and the RFC specifically does not say that this is illegal.<div><br></div><div style>-JP</div></div><div class="gmail_extra">
<br><br><div class="gmail_quote">On Wed, Jun 5, 2013 at 12:14 PM, Ken Rice <span dir="ltr"><<a href="mailto:krice@freeswitch.org" target="_blank">krice@freeswitch.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<font face="Monaco, Courier New"><span style="font-size:11pt">Is 2 From headers even technically allow? <br><div class="im">
<br>
<br>
On 6/5/13 2:03 PM, "JP" <<a href="http://jaykris@gmail.com" target="_blank">jaykris@gmail.com</a>> wrote:<br>
<br>
</div></span></font><blockquote><font face="Monaco, Courier New"><span style="font-size:11pt"><div class="im">I thought I would bounce this off the mailing list before filing a Jira ticket.<br>
<br>
I'm facing an issue where FS doesn't acknowledge a 200 OK response with a duplicate "From" header:<br>
<br>
recv 422 bytes from udp/[10.191.210.149]:5060 at 17:21:22.634270:<br>
------------------------------------------------------------------------<br>
SIP/2.0 200 OK<br>
Via: SIP/2.0/UDP 10.191.210.147:5080;rport;branch=z9hG4bKNv1g56Djj6BKj<br></div>
From: "" <sip:<a href="http://0000000000@10.191.210.147" target="_blank">0000000000@10.191.210.147</a> <<a href="mailto:sip%3A0000000000@10.191.210.147" target="_blank">mailto:sip%3A0000000000@10.191.210.147</a>> >;tag=By8FpSr2m6NvF<br>
From: "" <sip:<a href="http://0000000000@10.191.210.147" target="_blank">0000000000@10.191.210.147</a> <<a href="mailto:sip%3A0000000000@10.191.210.147" target="_blank">mailto:sip%3A0000000000@10.191.210.147</a>> >;tag=By8FpSr2m6NvF<br>
To: <sip:<a>1000@10.191.210.149:5060</a> <<a href="http://sip:1000@10.191.210.149:5060" target="_blank">http://sip:1000@10.191.210.149:5060</a>> >;tag=1<div class="im"><br>
Call-ID: 1efaef87-48a7-1231-d08a-000c29ccde0a<br>
CSeq: 44890363 INVITE<br>
Contact: <sip:10.191.210.149:5060;transport=UDP><br>
Content-Type: application/sdp<br>
Content-Length: 0<br>
<br>
Although I've not yet stepped through the code, it is my suspicion that the Sofia SIP stack is not accepting the response. Aside from the re-transmissions of the response that I'm seeing in the logs, there are no other error, info, or trace statements coming from any other FS module. RFC 3261 seems a bit vague in my opinion as to whether or not this is even allowed.<br>
<br>
As a side note, this issue came up while doing integration testing with OpenSER 1.3.4. OpenSER seems to stick in the duplicate From header whenever it does a serial proxy to multiple carriers and the first carrier leg times out. I'm wondering if anyone on the mailing list was familiar with this issue and perhaps knew of some fix/workaround on the FreeSWITCh end.<br>
<br>
Thanks,<br>
<br>
JP<br>
<br>
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