feat: FunConnect v1.0.0 - Minecraft联机平台完整版
- server: Node.js TCP中继服务器，支持多节点集群 - web: React管理面板（仪表盘、房间管理、节点管理） - client: Electron桌面客户端（连接、创建/加入房间、本地代理） - deploy: Ubuntu一键部署脚本
This commit is contained in:
FunMC
205
server/src/relay.ts
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205
server/src/relay.ts
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import net from 'net';
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import logger from './logger';
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import { Room, RoomManager } from './room';
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import config from './config';
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export class RelayEngine {
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private server: net.Server | null = null;
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private roomManager: RoomManager;
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private hostConnections: Map<string, net.Socket> = new Map();
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private pendingConnections: Map<string, { roomId: string; playerName: string; resolve: (socket: net.Socket) => void }> = new Map();
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constructor(roomManager: RoomManager) {
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this.roomManager = roomManager;
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}
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start(port: number): Promise<void> {
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return new Promise((resolve, reject) => {
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this.server = net.createServer((clientSocket) => {
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this.handleConnection(clientSocket);
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});
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this.server.on('error', (err) => {
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logger.error(`Relay server error: ${err.message}`);
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reject(err);
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});
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this.server.listen(port, '0.0.0.0', () => {
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logger.info(`Relay TCP server listening on port ${port}`);
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resolve();
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});
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});
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}
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private handleConnection(clientSocket: net.Socket): void {
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const remoteAddr = `${clientSocket.remoteAddress}:${clientSocket.remotePort}`;
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logger.info(`New TCP connection from ${remoteAddr}`);
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let buffer = Buffer.alloc(0);
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let identified = false;
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const timeout = setTimeout(() => {
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if (!identified) {
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logger.warn(`Connection from ${remoteAddr} timed out waiting for identification`);
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clientSocket.destroy();
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}
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}, 15000);
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clientSocket.once('data', (data) => {
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clearTimeout(timeout);
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identified = true;
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buffer = Buffer.concat([buffer, data]);
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this.identifyAndRoute(clientSocket, buffer, remoteAddr);
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});
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clientSocket.on('error', (err) => {
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logger.debug(`Socket error from ${remoteAddr}: ${err.message}`);
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});
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}
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private identifyAndRoute(clientSocket: net.Socket, initialData: Buffer, remoteAddr: string): void {
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try {
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const headerStr = initialData.toString('utf8', 0, Math.min(initialData.length, 512));
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if (headerStr.startsWith('FUNMC_HOST:')) {
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this.handleHostConnection(clientSocket, headerStr, remoteAddr);
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} else if (headerStr.startsWith('FUNMC_JOIN:')) {
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this.handlePlayerJoin(clientSocket, headerStr, initialData, remoteAddr);
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} else {
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logger.debug(`Unknown protocol from ${remoteAddr}, closing`);
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clientSocket.destroy();
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}
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} catch (err: any) {
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logger.error(`Error routing connection from ${remoteAddr}: ${err.message}`);
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clientSocket.destroy();
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}
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}
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private handleHostConnection(hostSocket: net.Socket, header: string, remoteAddr: string): void {
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const parts = header.split('\n')[0].replace('FUNMC_HOST:', '').split('|');
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if (parts.length < 2) {
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hostSocket.write('ERROR:INVALID_FORMAT\n');
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hostSocket.destroy();
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return;
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}
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const roomId = parts[0].trim();
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const hostPort = parseInt(parts[1].trim());
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const room = this.roomManager.getRoom(roomId);
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if (!room) {
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hostSocket.write('ERROR:ROOM_NOT_FOUND\n');
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hostSocket.destroy();
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return;
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}
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room.hostSocket = hostSocket;
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this.hostConnections.set(roomId, hostSocket);
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hostSocket.write('OK:HOST_REGISTERED\n');
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logger.info(`Host registered for room ${roomId} from ${remoteAddr}, target port ${hostPort}`);
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hostSocket.on('close', () => {
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logger.info(`Host disconnected from room ${roomId}`);
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this.hostConnections.delete(roomId);
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this.roomManager.deleteRoom(roomId);
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});
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hostSocket.on('error', (err) => {
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logger.error(`Host socket error for room ${roomId}: ${err.message}`);
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});
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}
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private handlePlayerJoin(playerSocket: net.Socket, header: string, initialData: Buffer, remoteAddr: string): void {
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const parts = header.split('\n')[0].replace('FUNMC_JOIN:', '').split('|');
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if (parts.length < 2) {
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playerSocket.write('ERROR:INVALID_FORMAT\n');
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playerSocket.destroy();
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return;
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}
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const roomId = parts[0].trim();
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const playerName = parts[1].trim();
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const password = parts[2]?.trim();
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const room = this.roomManager.getRoom(roomId);
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if (!room) {
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playerSocket.write('ERROR:ROOM_NOT_FOUND\n');
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playerSocket.destroy();
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return;
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}
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if (room.password && room.password !== password) {
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playerSocket.write('ERROR:WRONG_PASSWORD\n');
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playerSocket.destroy();
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return;
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}
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if (room.isFull) {
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playerSocket.write('ERROR:ROOM_FULL\n');
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playerSocket.destroy();
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return;
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}
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const hostSocket = this.hostConnections.get(roomId);
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if (!hostSocket || hostSocket.destroyed) {
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playerSocket.write('ERROR:HOST_OFFLINE\n');
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playerSocket.destroy();
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return;
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}
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const player = room.addPlayer(playerName, playerSocket);
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playerSocket.write('OK:CONNECTED\n');
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this.setupRelay(roomId, player.id, playerSocket, hostSocket, room);
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}
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private setupRelay(roomId: string, playerId: string, playerSocket: net.Socket, hostSocket: net.Socket, room: Room): void {
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const hostAddr = hostSocket.remoteAddress;
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const hostPort = room.hostPort;
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const targetSocket = new net.Socket();
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targetSocket.connect(hostPort, hostAddr || '127.0.0.1', () => {
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logger.info(`Relay established: player ${playerId} <-> host ${hostAddr}:${hostPort} in room ${roomId}`);
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playerSocket.pipe(targetSocket);
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targetSocket.pipe(playerSocket);
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});
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targetSocket.on('error', (err) => {
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logger.error(`Target connection error for player ${playerId}: ${err.message}`);
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playerSocket.destroy();
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});
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targetSocket.on('close', () => {
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playerSocket.destroy();
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room.removePlayer(playerId);
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});
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playerSocket.on('close', () => {
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targetSocket.destroy();
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room.removePlayer(playerId);
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});
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playerSocket.on('error', (err) => {
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logger.debug(`Player socket error: ${err.message}`);
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targetSocket.destroy();
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});
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}
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registerHostDirect(roomId: string, hostSocket: net.Socket): void {
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this.hostConnections.set(roomId, hostSocket);
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}
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stop(): void {
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if (this.server) {
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this.server.close();
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logger.info('Relay TCP server stopped');
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}
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for (const [, socket] of this.hostConnections) {
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socket.destroy();
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}
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this.hostConnections.clear();
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}
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}
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