This server is acting as an SRT relay / server at port 1935 (which is basically ravenium/srt-live-server).

Publisher Config

Use the following stream url for publishing: 
srt://srt.moetz.dev:1935?streamid=input/live/streamName
You can choose a streamName as you like. Please note, that the streamName is the only thing keeping your stream private, so, you might want to use something that has a bit more characters.

Receiver Config

Use the same URL as you used for Publishing on the receiving side, with the addition to add the stream-key you used on the publisher side added to the url: 
srt://srt.moetz.dev:1935?streamid=output/live/streamName
So, if you used 'test123' as the streamName on the publisher side, the domain for playing the stream is 'srt://srt.moetz.dev:1935?streamid=output/live/test123'.