Nethernet support for joining worlds

examples/client/nethernet.js

@@ -0,0 +1,45 @@
+process.env.DEBUG = 'minecraft-protocol'
+
+const readline = require('readline')
+const { createClient } = require('bedrock-protocol')
+
+async function pickSession (availableSessions) {
+  return new Promise((resolve) => {
+    const rl = readline.createInterface({
+      input: process.stdin,
+      output: process.stdout
+    })
+
+    console.log('Available Sessions:')
+
+    availableSessions.forEach((session, index) => console.log(`${index + 1}. ${session.customProperties.hostName} ${session.customProperties.worldName} (${session.customProperties.version})`))
+
+    rl.question('Please select a session by number: ', (answer) => {
+      const sessionIndex = parseInt(answer) - 1
+
+      if (sessionIndex >= 0 && sessionIndex < availableSessions.length) {
+        const selectedSession = availableSessions[sessionIndex]
+        console.log(`You selected: ${selectedSession.customProperties.hostName} ${selectedSession.customProperties.worldName} (${selectedSession.customProperties.version})`)
+        resolve(selectedSession)
+      } else {
+        console.log('Invalid selection. Please try again.')
+        resolve(pickSession())
+      }
+
+      rl.close()
+    })
+  })
+}
+
+const client = createClient({
+  transport: 'nethernet', // Use the Nethernet transport
+  world: {
+    pickSession
+  }
+})
+
+let ix = 0
+client.on('packet', (args) => {
+  console.log(`Packet ${ix} recieved`)
+  ix++
+})

examples/client/nethernet_local.js

@@ -0,0 +1,22 @@
+process.env.DEBUG = 'minecraft-protocol'
+
+const { Client } = require('node-nethernet')
+const { createClient } = require('bedrock-protocol')
+
+const c = new Client(0n)
+
+c.once('pong', (pong) => {
+  c.close()
+
+  const client = createClient({
+    transport: 'nethernet', // Use the Nethernet transport
+    networkId: pong.sender_id,
+    useSignalling: false
+  })
+
+  let ix = 0
+  client.on('packet', (args) => {
+    console.log(`Packet ${ix} recieved`)
+    ix++
+  })
+})

examples/client/nethernet_realm.js

@@ -0,0 +1,24 @@
+process.env.DEBUG = 'minecraft-protocol'
+
+const { createClient } = require('bedrock-protocol')
+
+const client = createClient({
+  transport: 'nethernet', // Use the Nethernet transport
+  useSignalling: true,
+  networkId: '<guid>',
+  skipPing: true
+})
+
+client.on('text', (packet) => { // Listen for chat messages and echo them back.
+  if (packet.source_name !== client.username) {
+    client.queue('text', {
+      type: 'chat',
+      needs_translation: false,
+      source_name: client.username,
+      xuid: '',
+      platform_chat_id: '',
+      filtered_message: '',
+      message: `${packet.source_name} said: ${packet.message} on ${new Date().toLocaleString()}`
+    })
+  }
+})

examples/server/nethernet.js

@@ -0,0 +1,20 @@
+/* eslint-disable */
+process.env.DEBUG = 'minecraft-protocol'
+
+const bedrock = require('bedrock-protocol')
+
+const server = bedrock.createServer({
+  transport: 'nethernet',
+  useSignalling: true, // disable for LAN connections only
+  motd: {
+    motd: 'Funtime Server',
+    levelName: 'Wonderland'
+  }
+})
+
+server.on('connect', client => {
+  client.on('join', () => { // The client has joined the server.
+    const date = new Date()  // Once client is in the server, send a colorful kick message
+    client.disconnect(`Good ${date.getHours() < 12 ? '§emorning§r' : '§3afternoon§r'}\n\nMy time is ${date.toLocaleString()} !`)
+  })
+})

index.js

@@ -10,7 +10,7 @@ const { Relay } = require('./src/relay')
 const { createClient, ping } = require('./src/createClient')
 const { createServer } = require('./src/createServer')
 const { Titles } = require('prismarine-auth')
-const { ServerAdvertisement } = require('./src/server/advertisement')
+const { ServerAdvertisement, NethernetServerAdvertisement } = require('./src/server/advertisement')
 
 module.exports = {
   Client,
@@ -20,5 +20,6 @@ module.exports = {
   ping,
   createServer,
   title: Titles,
-  ServerAdvertisement
+  ServerAdvertisement,
+  NethernetServerAdvertisement
 }

package.json

@@ -22,16 +22,20 @@
   "license": "MIT",
   "dependencies": {
     "debug": "^4.3.1",
+    "json-bigint": "^1.0.0",
     "jsonwebtoken": "^9.0.0",
     "jsp-raknet": "^2.1.3",
     "minecraft-data": "^3.0.0",
     "minecraft-folder-path": "^1.2.0",
+    "node-nethernet": "github:LucienHH/node-nethernet#protocol",
     "prismarine-auth": "^3.0.0",
     "prismarine-nbt": "^2.0.0",
     "prismarine-realms": "^1.1.0",
     "protodef": "^1.14.0",
     "raknet-native": "^1.0.3",
-    "uuid-1345": "^1.0.2"
+    "uuid-1345": "^1.0.2",
+    "ws": "^8.18.0",
+    "xbox-rta": "^2.1.0"
   },
   "optionalDependencies": {
     "raknet-node": "^0.5.0"
@@ -53,4 +57,4 @@
     "url": "https://github.com/PrismarineJS/bedrock-protocol/issues"
   },
   "homepage": "https://github.com/PrismarineJS/bedrock-protocol#readme"
-}
+}

src/client.js

@@ -5,9 +5,11 @@ const debug = require('debug')('minecraft-protocol')
 const Options = require('./options')
 const auth = require('./client/auth')
 const initRaknet = require('./rak')
+const { NethernetClient } = require('./nethernet')
 const { KeyExchange } = require('./handshake/keyExchange')
 const Login = require('./handshake/login')
 const LoginVerify = require('./handshake/loginVerify')
+const { NethernetSignal } = require('./websocket/signal')
 
 const debugging = false
 
@@ -20,13 +22,16 @@ class Client extends Connection {
     super()
     this.options = { ...Options.defaultOptions, ...options }
 
+    if (this.options.transport === 'nethernet') {
+      this.nethernet = {}
+    }
+
     this.startGameData = {}
     this.clientRuntimeId = null
     // Start off without compression on 1.19.30, zlib on below
     this.compressionAlgorithm = this.versionGreaterThanOrEqualTo('1.19.30') ? 'none' : 'deflate'
     this.compressionThreshold = 512
     this.compressionLevel = this.options.compressionLevel
-    this.batchHeader = 0xfe
 
     if (isDebug) {
       this.inLog = (...args) => debug('C ->', ...args)
@@ -49,10 +54,21 @@ class Client extends Connection {
     Login(this, null, this.options)
     LoginVerify(this, null, this.options)
 
-    const { RakClient } = initRaknet(this.options.raknetBackend)
     const host = this.options.host
     const port = this.options.port
-    this.connection = new RakClient({ useWorkers: this.options.useRaknetWorkers, host, port }, this)
+
+    const networkId = this.options.networkId
+
+    if (this.options.transport === 'nethernet') {
+      this.connection = new NethernetClient({ networkId })
+      this.batchHeader = null
+      this.disableEncryption = true
+    } else if (this.options.transport === 'raknet') {
+      const { RakClient } = initRaknet(this.options.raknetBackend)
+      this.connection = new RakClient({ useWorkers: this.options.useRaknetWorkers, host, port }, this)
+      this.batchHeader = 0xfe
+      this.disableEncryption = false
+    }
 
     this.emit('connect_allowed')
   }
@@ -72,7 +88,23 @@ class Client extends Connection {
 
   connect () {
     if (!this.connection) throw new Error('Connect not currently allowed') // must wait for `connect_allowed`, or use `createClient`
-    this.on('session', this._connect)
+    this.on('session', (sessionData) => {
+      if (this.options.transport === 'nethernet' && this.options.useSignalling) {
+        this.nethernet.signalling = new NethernetSignal(this.connection.nethernet.networkId, this.options.authflow, this.options.version)
+
+        this.nethernet.signalling.connect()
+
+        this.connection.nethernet.signalHandler = this.nethernet.signalling.write.bind(this.nethernet.signalling)
+
+        this.nethernet.signalling.on('signal', signal => this.connection.nethernet.handleSignal(signal))
+        this.nethernet.signalling.on('credentials', (credentials) => {
+          this.connection.nethernet.credentials = credentials
+          this._connect(sessionData)
+        })
+      } else {
+        this._connect(sessionData)
+      }
+    })
 
     if (this.options.offline) {
       debug('offline mode, not authenticating', this.options)
@@ -85,7 +117,16 @@ class Client extends Connection {
   }
 
   validateOptions () {
-    if (!this.options.host || this.options.port == null) throw Error('Invalid host/port')
+    switch (this.options.transport) {
+      case 'nethernet':
+        if (!this.options.networkId) throw Error('Invalid networkId')
+        break
+      case 'raknet':
+        if (!this.options.host || this.options.port == null) throw Error('Invalid host/port')
+        break
+      default:
+        throw Error(`Unsupported transport: ${this.options.transport} (nethernet, raknet)`)
+    }
     Options.validateOptions(this.options)
   }
 
@@ -252,7 +293,7 @@ class Client extends Connection {
         break
       case 'start_game':
         this.startGameData = pakData.params
-        // fallsthrough
+      // fallsthrough
       case 'item_registry': // 1.21.60+ send itemstates in item_registry packet
         pakData.params.itemstates?.forEach(state => {
           if (state.name === 'minecraft:shield') {

src/client/auth.js

@@ -4,6 +4,7 @@ const minecraftFolderPath = require('minecraft-folder-path')
 const debug = require('debug')('minecraft-protocol')
 const { uuidFrom } = require('../datatypes/util')
 const { RealmAPI } = require('prismarine-realms')
+const { SessionDirectory } = require('../xsapi/session')
 
 function validateOptions (options) {
   if (!options.profilesFolder) {
@@ -16,6 +17,60 @@ function validateOptions (options) {
   }
 }
 
+async function serverAuthenticate (server, options) {
+  validateOptions(options)
+
+  options.authflow ??= new PrismarineAuth(options.username, options.profilesFolder, options, options.onMsaCode)
+
+  server.nethernet.session = new SessionDirectory(options.authflow, {
+    world: {
+      hostName: server.advertisement.motd,
+      name: server.advertisement.levelName,
+      version: options.version,
+      protocol: options.protocolVersion,
+      memberCount: server.advertisement.playerCount,
+      maxMemberCount: server.advertisement.playersMax
+    }
+  })
+
+  await server.nethernet.session.createSession(options.networkId)
+}
+
+async function worldAuthenticate (client, options) {
+  validateOptions(options)
+
+  options.authflow = new PrismarineAuth(options.username, options.profilesFolder, options, options.onMsaCode)
+
+  const xbl = await options.authflow.getXboxToken()
+
+  client.nethernet.session = new SessionDirectory(options.authflow, {})
+
+  const getSessions = async () => {
+    const sessions = await client.nethernet.session.host.rest.getSessions(xbl.userXUID)
+    debug('sessions', sessions)
+    if (!sessions.length) throw Error('Couldn\'t find any sessions for the authenticated account')
+    return sessions
+  }
+
+  let world
+
+  if (options.world.pickSession) {
+    if (typeof options.world.pickSession !== 'function') throw Error('world.pickSession must be a function')
+    const sessions = await getSessions()
+    world = await options.world.pickSession(sessions)
+  }
+
+  if (!world) throw Error('Couldn\'t find a session to connect to.')
+
+  const session = await client.nethernet.session.joinSession(world.sessionRef.name)
+
+  const networkId = session.properties.custom.SupportedConnections.find(e => e.ConnectionType === 3).NetherNetId
+
+  if (!networkId) throw Error('Couldn\'t find a Nethernet ID to connect to.')
+
+  options.networkId = BigInt(networkId)
+}
+
 async function realmAuthenticate (options) {
   validateOptions(options)
 
@@ -64,8 +119,8 @@ async function realmAuthenticate (options) {
 async function authenticate (client, options) {
   validateOptions(options)
   try {
-    const authflow = options.authflow || new PrismarineAuth(options.username, options.profilesFolder, options, options.onMsaCode)
-    const loginData = await authflow.getMinecraftBedrockToken(client.clientX509).catch(e => {
+    options.authflow ??= new PrismarineAuth(options.username, options.profilesFolder, options, options.onMsaCode)
+    const loginData = await options.authflow.getMinecraftBedrockToken(client.clientX509).catch(e => {
       if (options.password) console.warn('Sign in failed, try removing the password field')
       throw e
     })
@@ -117,5 +172,7 @@ function postAuthenticate (client, profile, auth = {}) {
 module.exports = {
   createOfflineSession,
   authenticate,
-  realmAuthenticate
+  realmAuthenticate,
+  worldAuthenticate,
+  serverAuthenticate
 }

src/connection.js

@@ -48,6 +48,7 @@ class Connection extends EventEmitter {
   }
 
   startEncryption (iv) {
+    if (this.disableEncryption) return
     this.encryptionEnabled = true
     this.inLog?.('Started encryption', this.sharedSecret, iv)
     this.decrypt = cipher.createDecryptor(this, iv)