Tunneling Minecraft traffic to HTTP proxy

Suppose that I have a HTTP proxy server running at localhost:1080, my Minecraft server is running at 123.123.123.123:25565, and I want the tunnel to listen at port 1234 so that I can connect to localhost:1234 on my Minecraft client and the traffic will be tunneled to my proxy.

Install socat

sudo apt install socat

Create the tunnel:

socat TCP-LISTEN:<client port>,bind=localhost,fork PROXY:localhost:<server ip>:<server port>,proxyport=<proxy port>

For this example, it would be:

socat TCP-LISTEN:1234,bind=localhost,fork PROXY:localhost:123.123.123.123:25565,proxyport=1080

This command sets up a TCP listener on localhost:1234, and any incoming connection will be forwarded through the HTTP proxy at localhost:1080 to the server at 123.123.123.123:25565.

Now, launch the Minecraft client and add a server with address localhost:1234 and enjoy!

Shell script version:

server_ip="example.example.com"
server_port="25565"
client_port="1234"
proxy_port="1080"
echo server_ip: ${server_ip}
echo server_port: ${server_port}
echo client_port: ${client_port}
echo proxy_port: ${proxy_port}
socat TCP-LISTEN:${client_port},bind=localhost,fork PROXY:localhost:${server_ip}:${server_port},proxyport=${proxy_port}