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MI

MISS

by zyxkad

MISS, a library by zyxkad, forwards a Minecraft connection over the WebSocket protocol on both the client and the server.

FabricForgeNeoForgeClient or server, optionalGNU General Public License v3.0 or laterOpen source1.19 – 1.21.4

What it does

The mod lets the game connection travel over WebSocket. Both the client and the server can speak the protocol, and the server detects a WebSocket connection on the same port as ordinary game traffic, so no separate port has to be opened for it. MISS is a Java library that other tools can build on.

Setup on the server side involves optional pieces: an Nginx reverse proxy, which can carry the connection, and an SSL certificate if encryption is wanted. The game needs Minecraft Java Edition 1.19 or newer and Java 17 or newer. MISS is published for Fabric, Forge and NeoForge, and it is released under the GNU General Public License v3.0 or later, so the code is open source. The mod is placed in the mods folder like any other.

Key features

  1. WebSocket forwarding

    Minecraft connections are forwarded through the WebSocket protocol, letting game traffic pass through web infrastructure.

  2. Shared port detection

    The server recognizes a WebSocket connection arriving on its ordinary game port and handles it without a second listener.

  3. Protocol on both sides

    Both the client and the server can use the WebSocket protocol, so the forwarding path works from either end of the connection.

  4. Optional proxy and encryption

    A proxy and an SSL certificate can be added in front of the connection when a deployment needs them, but neither is required.

Compatibility

Latest build for each game version and loader.

1.21.x5 of 5 versions with builds
1.21.41.0.1Not available1.0.1
1.21.31.0.1Not available1.0.1
1.21.21.0.1Not available1.0.1
1.21.11.0.1Not available1.0.1
1.211.0.1Not available0.3.1
1.20.x7 of 7 versions with builds
1.20.61.0.21.0.2Not available
1.20.51.0.21.0.2Not available
1.20.41.0.21.0.2Not available
1.20.31.0.21.0.2Not available
1.20.21.0.21.0.2Not available
1.20.11.0.21.0.2Not available
1.201.0.01.0.0Not available
1.19.x5 of 5 versions with builds
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Use cases

Who it’s for: Server administrators who run game traffic through a reverse proxy and developers who need Minecraft connections carried over WebSocket. Players who only join a server and never configure the network have no reason to install it.

How it compares

Full comparison

ws2tcp is client-side only, covers only 1.21.4 and is open source under the Apache License 2.0, so it is not a server-side option. SocketPlugin is client-side only, open source is not claimed, and it targets 1.20.1 – 1.21.4 on Fabric. HttpInfoServer is client-side only, open source under the Apache License 2.0, and covers 1.20.4 – 1.20.6. ProtoWeaver is different in scope: it runs on Fabric, Forge, NeoForge and Quilt across 1.14 – 26.1.1 and is released under CC0 1.0 Universal, so its environment is not restricted to the client.

ModLoadersGame versionsEnvironmentUpdated
MISSFabric, Forge and NeoForge1.19 – 1.21.4Client or server, optional2026-04-06
ws2tcpFabric1.21.4Client-side only2025-07-10
SocketPluginFabric1.20.1 – 1.21.4Client-side only2026-07-01
HttpInfoServerFabric1.20.4 – 1.20.6Client-side only2024-05-28
ProtoWeaverFabric, Forge, NeoForge and Quilt1.14 – 26.1.1Not published2026-04-01

Questions

Which loaders does MISS support?

MISS is published for Fabric, Forge and NeoForge. The latest Fabric and Forge files are version 1.0.2 for 1.20.6, and the latest NeoForge file is version 1.0.1 for 1.21.4.

Does the server need MISS installed?

MISS works on either side, and neither side needs it, so installing it on the server is enough for server-side forwarding.

Does MISS require Nginx or an SSL certificate?

No. A reverse proxy such as Nginx and an SSL certificate are both optional and only needed for deployments that use them.

In the catalog

MISS is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 17,979 mods support Minecraft 1.21.4.

More from zyxkad

All projects

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What the author says

MISS uses WebSocket to forward your Minecraft connection. MISS 用于通过 WebSocket 转发 Minecraft 连接。这使得你可以通过 WebSocket 协议连接到 Minecraft 服务器,提供了一种新的网络传输方式。
zyxkad, on the Modrinth page

Official listing

Owner
zyxkad
Published
2025-01-27
Updated on Modrinth
2026-04-06
Facts verified
2026-10-15

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