Hi all,
I’ve made a snap for tcpie - a CLI tool to ping any TCP port. It’s available on the Snap Store - you can install it by typing:
sudo snap install tcpie
If you want to check the repository of this snap, you can do so: https://github.com/konrad11901/tcpie-snap
I’d like to ask you to test this snap against different IP addresses/websites and ports. The description of how to use this tool can be found on GitHub. Here are some examples:
$ tcpie -c 10 google.com 443
$ tcpie -i .1 8.8.8.8:53
If you encourage any problem (app crash, etc.), please describe it in this topic, providing as many details as possible.
I’d be thankful for any reports! 
Please remember that I’m not the author of this tool. All credits goes to silverwind.