alphaproxy

alphaproxy is a simple HTTP proxy that implements the old Minecraft authentication protocol using the newer Microsoft auth services.

It requires a recent version of Python 3 and the requests library.

How to run

To run on the default port (8444):

python3 main.py

To run on custom port:

python3 main.py 12345

How to use

You'll need to configure the JVM arguments for your game to configure Java to use the proxy server:

-Dhttp.proxyHost=<host> -Dhttp.proxyPort=<port>

Replace <host> and <port> with the address and port of your proxy server, respectively.

For Minecraft clients, this can be configured under "More options" in the "Edit installation" page, e.g.: For Minecraft servers, just add the parameters to your command line before the -jar, e.g.:

java -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=8444 -jar minecraft_server.jar nogui