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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)

Starting the UDP server on port 7373

Using Docker

  • 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.

How to use it?

  • 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.

Is there any demo server?

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

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  • Python 97.5%
  • Dockerfile 2.5%