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<tt>Hello Pratik,<br>
<br>
In the very beginning of the script route use the
sipmsg_validate() function (see
<a class="moz-txt-link-freetext" href="http://www.opensips.org/html/docs/modules/1.10.x/sipmsgops.html#id294004">http://www.opensips.org/html/docs/modules/1.10.x/sipmsgops.html#id294004</a>)
to check your message - you can do an exit there if the message is
not valid.<br>
<br>
Regards,<br>
</tt>
<pre class="moz-signature" cols="72">Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
<a class="moz-txt-link-freetext" href="http://www.opensips-solutions.com">http://www.opensips-solutions.com</a></pre>
<br>
On 10/11/2013 12:27 PM, Pratik Tank wrote:
<blockquote
cite="mid:CALrAmONjR7obT2UfaAsZ+tWAiT+wg-MBzToJCg4XLJRD+5nCNA@mail.gmail.com"
type="cite">
<div dir="ltr">Hello all,<br>
<br>
<br>
I want to drop the sip packets which have <strong>to</strong>
and <strong>contact</strong> field empty.<br>
<br>
<pre><code><i>INVITE <a class="moz-txt-link-freetext" href="sip:*******************">sip:*******************</a> 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 </i>
<b>
</b></code><b>How can I identify such packets and drop them?
</b></pre>
<pre><b>logs for opensips:</b>
</pre>
<pre>
<i><code>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 <a class="moz-txt-link-freetext" href="sip:***********************:5060">sip:***********************:5060</a>
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 <a class="moz-txt-link-freetext" href="sip:*************:5060">sip:*************:5060</a> 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 <a class="moz-txt-link-freetext" href="sip:****************:5060">sip:****************:5060</a>
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 <a class="moz-txt-link-freetext" href="sip:*****************:5060">sip:*****************:5060</a> SIP/2.0
Oct 9 17:16:04 voip /usr/local/sbin/opensips[32303]: ERROR:core:receive_msg: parse_msg failed</code>
</i></pre>
<br>
</div>
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</blockquote>
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