Hello, i have a Asterisk 16.12 installed on Centos 7 with PJSIP, connected to IBM Gateway, and i have a question:
how can i read custom headers from REFER message response from another SIP Server?
1-Asterisk dial a SIP URI to IBM Gateway
2-IBM Gateway add custom sip header
3-IBM Gateway send SIP REFER message to Asterisk
The transfer is OK, but the call back does not have the custom header
I can’t see anything in RFC 3515 suggesting the UAS should do anything at all with custom headers on the REFER.
SIP_HEADERS
header function reads headers from the INVITE request, any other header you need outside the INVITE method, you will need to extract it from the logs
yes, but i have custom headers in REFER message. Not INVITE. that is my problem
Thinking outside the (Asterisk) box…
How about if you write a daemon that reads all REFER and BYE messages promiscuously off the wire.
If it’s a REFER, write all the headers of interest into a database including the call ID, header name, and header value.
If it’s a BYE, delete all rows matching the call ID. Maybe add a delete for rows older than x seconds.
Then, in your dialplan you just read the rows as you need them.
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