3 Dec
2020
3 Dec
'20
11:59 a.m.
Ok I found the issue with the INVITE, it doesn't have multiple "From"
headers. But it does have a "From-Person:12345" header that we use to track the
customer id that initiated the call. So that explains why calls from a PSTN source
didn't have the issue.
I tried a change to our system to change the header from "From-Person" to
"Src-Person" and it that works fine on 5.4.2 no more duplicate From header error
the Callee gets the CANCEL msg just fine.
So Kamailio is maybe doing a "starts with" type match when finding the
"From" header then as of 5.3? Is that correct? We've had this header in
place for years now an only with this upgrade have the error. Is Kamailio behaving
properly here?
I've searched but couldn't find anything in that would suggest headers starting
with "From" to be not allowed.
Here is the original INVITE ( From-Person header is second to last )
```
INVITE sip:john.webrtc@bf96cc.domain.com SIP/2.0
v:SIP/2.0/UDP a.b.c.d:5081;rport;branch=z9hG4bKgZ5FU4aUKXjXm
Route:<sip:kam3.rtp.lax.domain.net:5060>
Max-Forwards:68
f:"user 1002"<sip:+1002@bf96cc.domain.com>;tag=8FUg427jU6pva
t:<sip:john.webrtc@bf96cc.domain.com>
i:98fa8010-afa4-1239-1dba-ea02c604123e
CSeq:28924569 INVITE
m:<sip:mod_sofia@206.15.136.103:5081>
User-Agent:fs
Allow:INVITE,ACK,BYE,CANCEL,OPTIONS,MESSAGE,INFO,UPDATE,REGISTER,REFER,NOTIFY,PUBLISH,SUBSCRIBE
k:timer,path,replaces
u:talk,hold,conference,presence,as-feature-event,dialog,line-seize,call-info,sla,include-session-description,presence.winfo,message-summary,refer
c:application/sdp
Content-Disposition:session
l:482
From-Person:12345
Remote-Party-ID:"user
1002"<sip:+1002@bf96cc.domain.com>;party=calling;screen=yes;privacy=off
<SDP DATA>
```
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