chatserver-mopp-udp

Simple chat server for Morserino-32 using the MOPP protocol over UDP.

Features

Listens for UDP messages and rebroadcasts them to all other clients.
empty keepalive UDP packets sent each 10 seconds to avoid NAT timeouts Caution: UDP keepalive messages, while invisible, prevent your Morserino-32 from auto-shutdown!
number of clients is restricted (to avoid abuse)
small delay is introduced (to avoid abuse)

You can start the server using docker-compose up, once you are logged into ghcr.io registry.
This will also launch frontail on port 8001.
Using Python
You can start the server usin python3 MOPP_Chat_server.py.

To "connect" or "make yourself known" to the server, send hi message from your Morserino with 20 WPM. Server will respond with ":hi" with number of clients connected (1 means you're alone). After that, server will resend all messages from you to all other known clients (you excluded).
If client is inactive (not transmitting) for too long, it will be dropped from the list. This is indicated by ":bye" message sent from the server. To reconnect, send "hi" again.
You can also force disconnection by sending :bye (---... -... -.-- .).
You can activate / deactivate echo mode for testing purposes by sending :EM (---... . --). The server will respond by sending you the current state, either "ON" or "OFF". Usually the sending user is excluded from receiving his / her own transmissions. In echo mode, own transmissions are sent back to the sending user as well. This is not suitable for actual communication, but may be helpfull for testing / debugging purposes. Please note that this is a server setting which affects all users.
When sending the command :USR (---... ..- ... .-.), the server will report the number of currently active users.

Yes, there is. You can connect your morserino to mopp.hamradio.pl:7373. Please just do not expect any high availability of this service.