1 Download and start it
Double-click the EXE. The first run issues a self-signed certificate and starts listening on 127.0.0.1.
wss:// · Minecraft
Turn any Minecraft server into a local wss:// endpoint
A small relay for web clients such as MCJS: it runs on your own machine, answers the WebSocket side of the game protocol and keeps the certificate local.
Latest release
wssproxyReading version.json …
Get it running
2 Type the address into MCJS
On the web client page choose wss and fill in 127.0.0.1:8443.
3 Join as usual
The relay forwards everything to the real server configured in the program.
What it does
Everything happens between your browser and your own computer; the target server only ever sees a normal Minecraft client.
Local relay only
It listens on your own machine (127.0.0.1 by default) and moves the bytes untouched; nothing is opened to the internet.
Web client support
It recognises browser clients such as EaglercraftX and MCJS and answers the handshake for them; normal clients pass straight through.
Certificate handled
The first run creates a self-signed certificate and installs it into the system trust store, which is what makes wss:// work.
Vanilla resolving
When no port is given it resolves the SRV record first, exactly like the official client does, and falls back to 25565.
Questions
The browser says the certificate is not trusted.
Open the program settings and click "Install into Trust Store", then close the browser completely and reopen it. The page has to be reloaded after that.
The program says a new release is available.
Use "Check for Updates" in the program or the download button on this page; both point at the same file. A release marked as required has to be installed before the program keeps running.
Which clients can connect?
Any web client that accepts a wss:// address, such as MCJS. Classic Java clients can use the plaintext ws:// port the program opens as a fallback.