[OpenSIPS-Devel] drop a packet before the start of routing call: openSIPS

[Pratik Tank]

Hello all,


I want to drop the sip packets which have *to* and *contact* field empty.

*INVITE sip:******************* SIP/2.0

Record-Route:

Via: SIP/2.0/UDP *********;branch=z9hG4bK0e44.f7bd2db2.0

Via: SIP/2.0/UDP
************:5060;received=*********;branch=z9hG4bK78f0df76;rport=1122

Max-Forwards: 69

From: "1014" ;tag=as2fff3730

To:

Contact:

Call-ID: **********@*********

CSeq: 103 INVITE

User-Agent: Asterisk PBX 1.6.2.9-2ubuntu2.1

Date: Wed, 09 Oct 2013 15:16:20 GMT

Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO

Supported: replaces, timer

Content-Type: application/sdp

Content-Length: 311 *

*
**How can I identify such packets and drop them?
*

*logs for opensips:*


*Oct  9 17:16:00 voip /usr/local/sbin/opensips[32325]:
ERROR:core:parse_first_line: bad request first line

Oct  9 17:16:00 voip /usr/local/sbin/opensips[32325]:
ERROR:core:parse_first_line: at line 0 char 42:

Oct  9 17:16:00 voip /usr/local/sbin/opensips[32325]:
ERROR:core:parse_first_line: parsed so far: INVITE
sip:***********************:5060

Oct  9 17:16:00 voip /usr/local/sbin/opensips[32325]:
INFO:core:parse_first_line: bad message

 > sendrecv 0-16lephone-event/8000 *************SUBSCRIBE, NOTIFY,
INFOg: message=<INVITE sip:*************:5060 SIP/2.0

Oct  9 17:16:00 voip /usr/local/sbin/opensips[32325]:
ERROR:core:receive_msg: parse_msg failed

Oct  9 17:16:04 voip /usr/local/sbin/opensips[32303]:
ERROR:core:parse_first_line: bad request first line

Oct  9 17:16:04 voip /usr/local/sbin/opensips[32303]:
ERROR:core:parse_first_line: at line 0 char 42:

Oct  9 17:16:04 voip /usr/local/sbin/opensips[32303]:
ERROR:core:parse_first_line: parsed so far: INVITE
sip:****************:5060

Oct  9 17:16:04 voip /usr/local/sbin/opensips[32303]:
INFO:core:parse_first_line: bad message

 > sendrecv 0-16lephone-event/*******************SUBSCRIBE, NOTIFY,
INFOg: message=<INVITE sip:*****************:5060 SIP/2.0

Oct  9 17:16:04 voip /usr/local/sbin/opensips[32303]:
ERROR:core:receive_msg: parse_msg failed
*
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