nodejs的io中的io.sockets.adapter.rooms在哪里？

Question

简短的回答：

io.sockets.adapter.rooms

我分析了io：

如该答案所示，来自 io 的套接字输出部分包含以下内容：

sockets: 

   { manager: [Circular],

     name: '',

     sockets: { '210837319844898486': [Object] },

     auth: false,

     flags: { endpoint: '', exceptions: [] },

     _events: { connection: [Function] } },

在哪里adapter？在哪里rooms？

从输出中找出适配器和房间的方法是什么io？

Answer 1

我认为您在加入之前试图获得空间。首先，您必须加入房间，然后才能进入房间io.sockets.adapter.roomslet room_id = 111io.sockets.on("connection", function (socket) {    // Everytime a client logs in, display a connected message    console.log("Server-Client Connected!");    socket.join("_room" + room_id);    socket.on('connected', function (data) {    });    console.log(io.sockets.adapter.rooms);    socket.on('qr_code_scan', function (room_id) {        io.sockets.in("_room" + room_id).emit("qr_code_scan", true);    });});的记录io.sockets.adapter.rooms{bjYiUV5YZy54VedKAAAA: Room, _room111: Room}app.js:55_room111:Room {sockets: {…}, length: 1}length:1sockets:{-isBAZIB-Sm3jArgAAAB: true}-isBAZIB-Sm3jArgAAAB:true__proto__:Object__proto__:Object-isBAZIB-Sm3jArgAAAB:Room {sockets: {…}, length: 1}length:1sockets:{-isBAZIB-Sm3jArgAAAB: true}-isBAZIB-Sm3jArgAAAB:true__proto__:Object__proto__:Object__proto__:Object

Answer 2

对于“socket.io”的当前版本：“^4.1.2”，io.sockets.adapter.rooms是这样的地图：Map(2) { 'hgdAp3ghn1RQZk3iAAAD' => Set(1) { 'hgdAp3ghn1RQZk3iAAAD' }, 'test' => Set(1) { 'hgdAp3ghn1RQZk3iAAAD' } }当房间已经存在时，在本例中为“测试”。如果您在创建房间之前调用它，那么它将是：Map(1) { 'w2e2Vnav-zmf6pm4AAAD' => Set(1) { 'w2e2Vnav-zmf6pm4AAAD' } }因此，长答案是它取决于您使用的版本，对于 4.x 版，房间只会在用户加入房间后成为地图的一部分，而不是之前。

Answer 3

我不确定该响应是怎么回事。但我可以确认，当我使用 socket.io@2.1.1 和 console.log(io) 运行基本的 socket.io 示例时，我在终端中看到以下内容：Server {  nsps: {    '/': Namespace {      name: '/',      server: [Circular],      sockets: [Object],      connected: [Object],      fns: [],      ids: 0,      rooms: [],      flags: {},      adapter: [Adapter],      _events: [Object: null prototype],      _eventsCount: 1    }  },  parentNsps: Map {},  _path: '/socket.io',  _serveClient: true,  parser: {    protocol: 4,    types: [      'CONNECT',      'DISCONNECT',      'EVENT',      'ACK',      'ERROR',      'BINARY_EVENT',      'BINARY_ACK'    ],    CONNECT: 0,    DISCONNECT: 1,    EVENT: 2,    ACK: 3,    ERROR: 4,    BINARY_EVENT: 5,    BINARY_ACK: 6,    Encoder: [Function: Encoder],    Decoder: [Function: Decoder]  },  encoder: Encoder {},  _adapter: [Function: Adapter],  _origins: '*:*',  sockets: Namespace {    name: '/',    server: [Circular],    sockets: { WFrro9MpS4d1nSouAAAA: [Socket] },    connected: { WFrro9MpS4d1nSouAAAA: [Socket] },    fns: [],    ids: 0,    rooms: [],    flags: {},    adapter: Adapter {      nsp: [Circular],      rooms: [Object],      sids: [Object],      encoder: Encoder {}    },    _events: [Object: null prototype] { connection: [Array] },    _eventsCount: 1  },  eio: Server {    clients: { WFrro9MpS4d1nSouAAAA: [Socket] },    clientsCount: 1,    wsEngine: 'ws',    pingTimeout: 5000,    pingInterval: 25000,    upgradeTimeout: 10000,    maxHttpBufferSize: 100000000,    transports: [ 'polling', 'websocket' ],    allowUpgrades: true,    allowRequest: [Function: bound ],    cookie: 'io',    cookiePath: '/',    cookieHttpOnly: true,    perMessageDeflate: { threshold: 1024 },    httpCompression: { threshold: 1024 },    initialPacket: [ '0' ],    ws: WebSocketServer {      _events: [Object: null prototype] {},      _eventsCount: 0,      _maxListeners: undefined,      options: [Object],      [Symbol(kCapture)]: false    },    _events: [Object: null prototype] { connection: [Function: bound ] },    _eventsCount: 1  },  httpServer: Server {    insecureHTTPParser: undefined,    _events: [Object: null prototype] {      connection: [Function: connectionListener],      close: [Function: bound ],      listening: [Function: bound ],      upgrade: [Function],      request: [Function]    },    _eventsCount: 5,    _maxListeners: undefined,    _connections: 2,    _handle: TCP {      reading: false,      onconnection: [Function: onconnection],      [Symbol(owner_symbol)]: [Circular]    },    _usingWorkers: false,    _workers: [],    _unref: false,    allowHalfOpen: true,    pauseOnConnect: false,    httpAllowHalfOpen: false,    timeout: 120000,    keepAliveTimeout: 5000,    maxHeadersCount: null,    headersTimeout: 60000,    _connectionKey: '6::::8080',    [Symbol(IncomingMessage)]: [Function: IncomingMessage],    [Symbol(ServerResponse)]: [Function: ServerResponse],    [Symbol(kCapture)]: false,    [Symbol(asyncId)]: 6  },  engine: Server {    clients: { WFrro9MpS4d1nSouAAAA: [Socket] },    clientsCount: 1,    wsEngine: 'ws',    pingTimeout: 5000,    pingInterval: 25000,    upgradeTimeout: 10000,    maxHttpBufferSize: 100000000,    transports: [ 'polling', 'websocket' ],    allowUpgrades: true,    allowRequest: [Function: bound ],    cookie: 'io',    cookiePath: '/',    cookieHttpOnly: true,    perMessageDeflate: { threshold: 1024 },    httpCompression: { threshold: 1024 },    initialPacket: [ '0' ],    ws: WebSocketServer {      _events: [Object: null prototype] {},      _eventsCount: 0,      _maxListeners: undefined,      options: [Object],      [Symbol(kCapture)]: false    },    _events: [Object: null prototype] { connection: [Function: bound ] },    _eventsCount: 1  }} 随着房间io.sockets.adapter.rooms。