For one of my projects, I was having need of a SIP scanner. This SIP scanner should not only use SIP OPTIONS but also use unimplemented SIP messages to scan a network. I’ve checked such a tool on the web but couldn’t find that does both. Then, I decided to use SIPp but had another problem.
Therefore, I wrote my own SIP scanner. In case you need such a tool, you can download it from github.
Initial version seems working but there could be bugs. Please let me know if you find any.