!= means "not equal"

! by itself means the inverse of the result, like in C, where !TRUE == FALSE and !FALSE == TRUE

I'd recommend you get that Getting Started document from www.onsip.org if you new to SER because it is a rather complex project.

Regards, Paul

On 9/19/05, Rick Thompson rthompson@vir2com.com wrote:

Thanks Paul

Ser is new to me and the script I'm using was developed by another person but I have one question. I know that in this statement

if(method!="REGISTER") {.....};

the ! means not equal to but what is it used for in this statement

if (!lookup("location")) {.....};

and is ; always required unless it's the last curly bracket in the section?

----Original Message----- From: Paul Hazlett [mailto:javarockx@gmail.com] Sent: Monday, September 19, 2005 10:59 AM To: rthompson@vir2com.com Cc: serusers@lists.iptel.org Subject: Re: [Serusers] sdp and rtp errors

Rick,

Not all messages will have an SDP payload. In other words the <Content-Length> head may be zero for some messages.

If you call fix_nated_contact() for these types of message then you will see these sorts of errors.

We usually do some tests on the SIP message prior to calling these NAT functions. Check out the Getting Started document www.onsip.org for a good NAT traversal example.

Regards, Paul

On 9/19/05, Rick Thompson rthompson@vir2com.com wrote:

...

Hi All

I hope someone can help me with an issue I"ve had since installing ser.

For

...

some reason, whenever I call fix_nated_sdp or force_rtp_proxy I get the following errors

Sep 19 10:31:06 localhost ser[3921]: Mon Sep 19 10:31:06 2005 18 a.b.c.d 62141 ****** Fixing NAT on reply with rtp

Sep 19 10:31:06 localhost ser[3921]: ERROR: extract_body: message body has length zero

Sep 19 10:31:06 localhost ser[3921]: ERROR: fix_nated_sdp: cannot extract body from msg!

Sep 19 10:31:06 localhost ser[3921]: ERROR: extract_body: message body has length zero

Sep 19 10:31:06 localhost ser[3921]: ERROR: force_rtp_proxy2: can't

extract

...

body from the message

Sep 19 10:31:06 localhost ser[3921]: ERROR: on_reply processing failed

Here is the part of the script that is generating the error

onreply_route[1] {

    xlog("L_ALERT", "%Tf %mf ****** On Reply From: <%si> <%tu> <%fu>

<%rm> <%rs> <%rr>\n");

    if(status=~"[12][0-9][0-9]" && nat_uac_test("19")) {

            fix_nated_contact();

            force_rport();

    };

     if(status=~"[12][0-9][0-9]" && nat_uac_test("19") &&

src_port>=10000) {

                    xlog("L_ALERT", "%Tf %mf %si %sp ****** Fixing NAT

on reply with rtp\n");

                    fix_nated_sdp("3");

                    force_rtp_proxy();

    } else if(status=~"[12][0-9][0-9]" && nat_uac_test("19")) {

            xlog("L_ALERT", "%Tf %mf %si %sp ****** Fixing NAT on

reply

...

with sdp\n");

            fix_nated_sdp("3");

            };

}

Any help would be appreciated.

Thanks

Rick

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