NetherNet

A server-side implementation of NetherNet, the WebRTC DataChannel transport used by Minecraft: Bedrock Edition, in PHP.

It is built on ext-webrtc, which provides bindings for libdatachannel.

Requirements

• PHP 8.1 or newer (64-bit) with IPv6 support
• ext-webrtc
• ext-encoding
• ext-openssl, ext-hash, ext-json, ext-sockets

What's in the library?

• NetherNetServer: the entry point. Accepts clients, owns their sessions, and is driven by calling tick().
• ServerEventListener: implemented by you to receive session open/close events and incoming packets.
• Signaling: HttpSignaling (online play) and LanSignaling (LAN discovery), registered with addSignaling().
• Identity: ServerIdentity and SelfSignedIdentityProvider for the server's identity, and PeerIdentity for verified clients.
• Address blocking: blockAddress() and unblockAddress().

Usage

examples/server.php is a complete echo server showing how to set everything up and run the tick loop.