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Voice over IP

Automated SIP testing with sipcmd

Using sipcmd to test SIP Services from the command line

I wrote about some tests I ran with SIPp to load test the transcoding abilities of RTPengine a while back.

While SIPp allows you to create complex & powerful scenarios, sipcmd’s simple usage makes it great for quickly testing stuff.

Installation

Install prerequisites

apt-get install libopal-dev sip-dev libpt-dev libssl1.0-dev

Next up clone the GitHub repo and compile:

git clone https://github.com/tmakkonen/sipcmd
cd sipcmd
make 

To be able to call sipcmd from anywhere, copy the binary to /usr/sbin/

cp sipcmd /usr/sbin/

Usage

Unlike SIPp, sipcmd has a much more simple syntax to allow you to follow basic call scenarios, like call a destination, wait a set time and then hangup, or answer an incoming call and send a DTMF digit and wait for the called party to hangup.

So let’s get the most basic thing we can set, SIP Registration and Authentication.

sipcmd -P sip -u "nick" -c "mypassword" -w "192.168.190.129"

Now sipcmd will register on that host (192.168.190.129) with username nick and password mypassword.

And it works!

Next we’ll add a basic call scenario, call 123 wait 2 seconds (2000 ms) and then hangup.

“c123;w2000;h”

./sipcmd -P sip -u "nick" -c "mypassword" -w "192.168.190.129" -x "c123;w2000;h"

And there you have it, simple as that, we’ve made a test call, waited a set time and then hung up.

We can even combine this with monitoring / NMS systems like Nagios to run tests against the network continually.

For more advanced scenarios I’d recommend using SIPp, but for simple testing, particularly from a command line, sipcmd is a simple easy place to start.

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