Parsing with osip_message_parse() failing if no User-Agent

[Gavin Henry]

Hi all,

I'm parsing SIP packets like so:

https://github.com/SentryPeer/SentryPeer/blob/main/src/sip_parser.c#L49

and ones like this fail as the User-Agent is empty. Any tips to ignore failures?

REGISTER sip:1017@XXX SIP/2.0
To: 1017 <sip:1017@XXX>
From:  <sip:1017@XXX>;tag=0c26cd11
Via: SIP/2.0/UDP XXX:42026;branch=5x1ixd9rl88d5x4tdqkr345vdqzz080k1xgkt2mi4rnqpnsbyr3vhx1m4inpmg9zno08dly;rport
Call-ID: 678dcbe7d762683c43af2d11ee6e55de
CSeq: 1 REGISTER
Contact: <sip:1017@XXX:42026>
User-Agent:
Max-forwards: 70
Allow: INVITE, ACK, CANCEL, BYE, REFER
Content-Type: application/sdp

Thanks.

--

Kind Regards,
Gavin Henry.
https://sentrypeer.org