526 lines
18 KiB
TypeScript
Executable file
526 lines
18 KiB
TypeScript
Executable file
/// <reference types="node" />
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/// <reference types="node" />
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/// <reference types="node" />
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import http = require("http");
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import type { Server as HTTPSServer } from "https";
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import type { Http2SecureServer, Http2Server } from "http2";
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import type { ServerOptions as EngineOptions, AttachOptions, BaseServer } from "engine.io";
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import { ExtendedError, Namespace, ServerReservedEventsMap } from "./namespace";
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import { Adapter, Room, SocketId } from "socket.io-adapter";
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import * as parser from "socket.io-parser";
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import type { Encoder } from "socket.io-parser";
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import { Socket, DisconnectReason } from "./socket";
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import type { BroadcastOperator, RemoteSocket } from "./broadcast-operator";
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import { EventsMap, DefaultEventsMap, EventParams, StrictEventEmitter, EventNames, DecorateAcknowledgementsWithTimeoutAndMultipleResponses, AllButLast, Last, RemoveAcknowledgements, EventNamesWithAck, FirstNonErrorArg } from "./typed-events";
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declare type ParentNspNameMatchFn = (name: string, auth: {
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[key: string]: any;
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}, fn: (err: Error | null, success: boolean) => void) => void;
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declare type AdapterConstructor = typeof Adapter | ((nsp: Namespace) => Adapter);
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declare type TServerInstance = http.Server | HTTPSServer | Http2SecureServer | Http2Server;
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interface ServerOptions extends EngineOptions, AttachOptions {
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/**
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* name of the path to capture
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* @default "/socket.io"
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*/
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path: string;
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/**
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* whether to serve the client files
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* @default true
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*/
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serveClient: boolean;
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/**
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* the adapter to use
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* @default the in-memory adapter (https://github.com/socketio/socket.io-adapter)
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*/
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adapter: AdapterConstructor;
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/**
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* the parser to use
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* @default the default parser (https://github.com/socketio/socket.io-parser)
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*/
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parser: any;
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/**
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* how many ms before a client without namespace is closed
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* @default 45000
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*/
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connectTimeout: number;
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/**
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* Whether to enable the recovery of connection state when a client temporarily disconnects.
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*
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* The connection state includes the missed packets, the rooms the socket was in and the `data` attribute.
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*/
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connectionStateRecovery: {
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/**
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* The backup duration of the sessions and the packets.
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*
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* @default 120000 (2 minutes)
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*/
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maxDisconnectionDuration?: number;
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/**
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* Whether to skip middlewares upon successful connection state recovery.
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*
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* @default true
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*/
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skipMiddlewares?: boolean;
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};
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/**
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* Whether to remove child namespaces that have no sockets connected to them
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* @default false
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*/
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cleanupEmptyChildNamespaces: boolean;
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}
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/**
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* Represents a Socket.IO server.
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*
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* @example
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* import { Server } from "socket.io";
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*
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* const io = new Server();
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*
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* io.on("connection", (socket) => {
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* console.log(`socket ${socket.id} connected`);
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*
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* // send an event to the client
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* socket.emit("foo", "bar");
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*
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* socket.on("foobar", () => {
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* // an event was received from the client
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* });
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*
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* // upon disconnection
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* socket.on("disconnect", (reason) => {
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* console.log(`socket ${socket.id} disconnected due to ${reason}`);
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* });
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* });
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*
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* io.listen(3000);
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*/
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export declare class Server<ListenEvents extends EventsMap = DefaultEventsMap, EmitEvents extends EventsMap = ListenEvents, ServerSideEvents extends EventsMap = DefaultEventsMap, SocketData = any> extends StrictEventEmitter<ServerSideEvents, RemoveAcknowledgements<EmitEvents>, ServerReservedEventsMap<ListenEvents, EmitEvents, ServerSideEvents, SocketData>> {
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readonly sockets: Namespace<ListenEvents, EmitEvents, ServerSideEvents, SocketData>;
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/**
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* A reference to the underlying Engine.IO server.
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*
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* @example
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* const clientsCount = io.engine.clientsCount;
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*
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*/
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engine: BaseServer;
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/** @private */
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readonly _parser: typeof parser;
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/** @private */
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readonly encoder: Encoder;
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/**
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* @private
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*/
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_nsps: Map<string, Namespace<ListenEvents, EmitEvents, ServerSideEvents, SocketData>>;
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private parentNsps;
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/**
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* A subset of the {@link parentNsps} map, only containing {@link ParentNamespace} which are based on a regular
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* expression.
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*
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* @private
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*/
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private parentNamespacesFromRegExp;
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private _adapter?;
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private _serveClient;
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private readonly opts;
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private eio;
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private _path;
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private clientPathRegex;
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/**
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* @private
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*/
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_connectTimeout: number;
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private httpServer;
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private _corsMiddleware;
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/**
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* Server constructor.
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*
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* @param srv http server, port, or options
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* @param [opts]
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*/
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constructor(opts?: Partial<ServerOptions>);
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constructor(srv?: TServerInstance | number, opts?: Partial<ServerOptions>);
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constructor(srv: undefined | Partial<ServerOptions> | TServerInstance | number, opts?: Partial<ServerOptions>);
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get _opts(): Partial<ServerOptions>;
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/**
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* Sets/gets whether client code is being served.
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*
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* @param v - whether to serve client code
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* @return self when setting or value when getting
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*/
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serveClient(v: boolean): this;
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serveClient(): boolean;
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serveClient(v?: boolean): this | boolean;
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/**
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* Executes the middleware for an incoming namespace not already created on the server.
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*
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* @param name - name of incoming namespace
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* @param auth - the auth parameters
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* @param fn - callback
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*
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* @private
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*/
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_checkNamespace(name: string, auth: {
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[key: string]: any;
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}, fn: (nsp: Namespace<ListenEvents, EmitEvents, ServerSideEvents, SocketData> | false) => void): void;
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/**
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* Sets the client serving path.
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*
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* @param {String} v pathname
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* @return {Server|String} self when setting or value when getting
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*/
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path(v: string): this;
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path(): string;
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path(v?: string): this | string;
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/**
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* Set the delay after which a client without namespace is closed
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* @param v
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*/
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connectTimeout(v: number): this;
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connectTimeout(): number;
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connectTimeout(v?: number): this | number;
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/**
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* Sets the adapter for rooms.
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*
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* @param v pathname
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* @return self when setting or value when getting
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*/
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adapter(): AdapterConstructor | undefined;
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adapter(v: AdapterConstructor): this;
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/**
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* Attaches socket.io to a server or port.
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*
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* @param srv - server or port
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* @param opts - options passed to engine.io
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* @return self
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*/
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listen(srv: TServerInstance | number, opts?: Partial<ServerOptions>): this;
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/**
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* Attaches socket.io to a server or port.
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*
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* @param srv - server or port
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* @param opts - options passed to engine.io
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* @return self
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*/
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attach(srv: TServerInstance | number, opts?: Partial<ServerOptions>): this;
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attachApp(app: any, opts?: Partial<ServerOptions>): void;
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/**
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* Initialize engine
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*
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* @param srv - the server to attach to
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* @param opts - options passed to engine.io
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* @private
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*/
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private initEngine;
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/**
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* Attaches the static file serving.
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*
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* @param srv http server
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* @private
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*/
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private attachServe;
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/**
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* Handles a request serving of client source and map
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*
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* @param req
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* @param res
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* @private
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*/
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private serve;
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/**
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* @param filename
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* @param req
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* @param res
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* @private
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*/
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private static sendFile;
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/**
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* Binds socket.io to an engine.io instance.
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*
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* @param engine engine.io (or compatible) server
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* @return self
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*/
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bind(engine: BaseServer): this;
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/**
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* Called with each incoming transport connection.
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*
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* @param {engine.Socket} conn
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* @return self
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* @private
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*/
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private onconnection;
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/**
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* Looks up a namespace.
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*
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* @example
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* // with a simple string
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* const myNamespace = io.of("/my-namespace");
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*
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* // with a regex
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* const dynamicNsp = io.of(/^\/dynamic-\d+$/).on("connection", (socket) => {
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* const namespace = socket.nsp; // newNamespace.name === "/dynamic-101"
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*
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* // broadcast to all clients in the given sub-namespace
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* namespace.emit("hello");
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* });
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*
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* @param name - nsp name
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* @param fn optional, nsp `connection` ev handler
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*/
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of(name: string | RegExp | ParentNspNameMatchFn, fn?: (socket: Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>) => void): Namespace<ListenEvents, EmitEvents, ServerSideEvents, SocketData>;
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/**
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* Closes server connection
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*
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* @param [fn] optional, called as `fn([err])` on error OR all conns closed
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*/
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close(fn?: (err?: Error) => void): void;
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/**
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* Registers a middleware, which is a function that gets executed for every incoming {@link Socket}.
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*
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* @example
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* io.use((socket, next) => {
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* // ...
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* next();
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* });
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*
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* @param fn - the middleware function
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*/
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use(fn: (socket: Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>, next: (err?: ExtendedError) => void) => void): this;
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/**
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* Targets a room when emitting.
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*
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* @example
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* // the “foo” event will be broadcast to all connected clients in the “room-101” room
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* io.to("room-101").emit("foo", "bar");
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*
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* // with an array of rooms (a client will be notified at most once)
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* io.to(["room-101", "room-102"]).emit("foo", "bar");
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*
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* // with multiple chained calls
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* io.to("room-101").to("room-102").emit("foo", "bar");
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*
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* @param room - a room, or an array of rooms
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* @return a new {@link BroadcastOperator} instance for chaining
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*/
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to(room: Room | Room[]): BroadcastOperator<import("./typed-events").DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
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/**
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* Targets a room when emitting. Similar to `to()`, but might feel clearer in some cases:
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*
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* @example
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* // disconnect all clients in the "room-101" room
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* io.in("room-101").disconnectSockets();
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*
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* @param room - a room, or an array of rooms
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* @return a new {@link BroadcastOperator} instance for chaining
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*/
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in(room: Room | Room[]): BroadcastOperator<import("./typed-events").DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
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/**
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* Excludes a room when emitting.
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*
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* @example
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* // the "foo" event will be broadcast to all connected clients, except the ones that are in the "room-101" room
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* io.except("room-101").emit("foo", "bar");
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*
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* // with an array of rooms
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* io.except(["room-101", "room-102"]).emit("foo", "bar");
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*
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* // with multiple chained calls
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* io.except("room-101").except("room-102").emit("foo", "bar");
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*
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* @param room - a room, or an array of rooms
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* @return a new {@link BroadcastOperator} instance for chaining
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*/
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except(room: Room | Room[]): BroadcastOperator<import("./typed-events").DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
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/**
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* Sends a `message` event to all clients.
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*
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* This method mimics the WebSocket.send() method.
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*
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* @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send
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*
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* @example
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* io.send("hello");
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*
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* // this is equivalent to
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* io.emit("message", "hello");
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*
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* @return self
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*/
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send(...args: EventParams<EmitEvents, "message">): this;
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/**
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* Sends a `message` event to all clients. Alias of {@link send}.
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*
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* @return self
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*/
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write(...args: EventParams<EmitEvents, "message">): this;
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/**
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* Sends a message to the other Socket.IO servers of the cluster.
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*
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* @example
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* io.serverSideEmit("hello", "world");
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*
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* io.on("hello", (arg1) => {
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* console.log(arg1); // prints "world"
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* });
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*
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* // acknowledgements (without binary content) are supported too:
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* io.serverSideEmit("ping", (err, responses) => {
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* if (err) {
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* // some servers did not acknowledge the event in the given delay
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* } else {
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* console.log(responses); // one response per server (except the current one)
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* }
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* });
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*
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* io.on("ping", (cb) => {
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* cb("pong");
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* });
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*
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* @param ev - the event name
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* @param args - an array of arguments, which may include an acknowledgement callback at the end
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*/
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serverSideEmit<Ev extends EventNames<ServerSideEvents>>(ev: Ev, ...args: EventParams<DecorateAcknowledgementsWithTimeoutAndMultipleResponses<ServerSideEvents>, Ev>): boolean;
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/**
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* Sends a message and expect an acknowledgement from the other Socket.IO servers of the cluster.
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*
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* @example
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* try {
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* const responses = await io.serverSideEmitWithAck("ping");
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* console.log(responses); // one response per server (except the current one)
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* } catch (e) {
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* // some servers did not acknowledge the event in the given delay
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* }
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*
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* @param ev - the event name
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* @param args - an array of arguments
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*
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* @return a Promise that will be fulfilled when all servers have acknowledged the event
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*/
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serverSideEmitWithAck<Ev extends EventNamesWithAck<ServerSideEvents>>(ev: Ev, ...args: AllButLast<EventParams<ServerSideEvents, Ev>>): Promise<FirstNonErrorArg<Last<EventParams<ServerSideEvents, Ev>>>[]>;
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/**
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* Gets a list of socket ids.
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*
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* @deprecated this method will be removed in the next major release, please use {@link Server#serverSideEmit} or
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* {@link Server#fetchSockets} instead.
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*/
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allSockets(): Promise<Set<SocketId>>;
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/**
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* Sets the compress flag.
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*
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* @example
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* io.compress(false).emit("hello");
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*
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* @param compress - if `true`, compresses the sending data
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* @return a new {@link BroadcastOperator} instance for chaining
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*/
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compress(compress: boolean): BroadcastOperator<import("./typed-events").DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
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/**
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* Sets a modifier for a subsequent event emission that the event data may be lost if the client is not ready to
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* receive messages (because of network slowness or other issues, or because they’re connected through long polling
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* and is in the middle of a request-response cycle).
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*
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* @example
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* io.volatile.emit("hello"); // the clients may or may not receive it
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*
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* @return a new {@link BroadcastOperator} instance for chaining
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*/
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get volatile(): BroadcastOperator<import("./typed-events").DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
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/**
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* Sets a modifier for a subsequent event emission that the event data will only be broadcast to the current node.
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*
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* @example
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* // the “foo” event will be broadcast to all connected clients on this node
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* io.local.emit("foo", "bar");
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*
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* @return a new {@link BroadcastOperator} instance for chaining
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*/
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get local(): BroadcastOperator<import("./typed-events").DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
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/**
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* Adds a timeout in milliseconds for the next operation.
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*
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* @example
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* io.timeout(1000).emit("some-event", (err, responses) => {
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* if (err) {
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* // some clients did not acknowledge the event in the given delay
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* } else {
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* console.log(responses); // one response per client
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* }
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* });
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*
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* @param timeout
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*/
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timeout(timeout: number): BroadcastOperator<import("./typed-events").DecorateAcknowledgements<import("./typed-events").DecorateAcknowledgementsWithMultipleResponses<EmitEvents>>, SocketData>;
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/**
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* Returns the matching socket instances.
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*
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* Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
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*
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* @example
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* // return all Socket instances
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* const sockets = await io.fetchSockets();
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*
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* // return all Socket instances in the "room1" room
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* const sockets = await io.in("room1").fetchSockets();
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*
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* for (const socket of sockets) {
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* console.log(socket.id);
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* console.log(socket.handshake);
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* console.log(socket.rooms);
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* console.log(socket.data);
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*
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* socket.emit("hello");
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* socket.join("room1");
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* socket.leave("room2");
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* socket.disconnect();
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* }
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*/
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fetchSockets(): Promise<RemoteSocket<EmitEvents, SocketData>[]>;
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/**
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* Makes the matching socket instances join the specified rooms.
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*
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* Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
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*
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* @example
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*
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* // make all socket instances join the "room1" room
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* io.socketsJoin("room1");
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*
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* // make all socket instances in the "room1" room join the "room2" and "room3" rooms
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* io.in("room1").socketsJoin(["room2", "room3"]);
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*
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* @param room - a room, or an array of rooms
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*/
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socketsJoin(room: Room | Room[]): void;
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/**
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* Makes the matching socket instances leave the specified rooms.
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*
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* Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
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*
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* @example
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* // make all socket instances leave the "room1" room
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* io.socketsLeave("room1");
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*
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* // make all socket instances in the "room1" room leave the "room2" and "room3" rooms
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* io.in("room1").socketsLeave(["room2", "room3"]);
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*
|
||
* @param room - a room, or an array of rooms
|
||
*/
|
||
socketsLeave(room: Room | Room[]): void;
|
||
/**
|
||
* Makes the matching socket instances disconnect.
|
||
*
|
||
* Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
|
||
*
|
||
* @example
|
||
* // make all socket instances disconnect (the connections might be kept alive for other namespaces)
|
||
* io.disconnectSockets();
|
||
*
|
||
* // make all socket instances in the "room1" room disconnect and close the underlying connections
|
||
* io.in("room1").disconnectSockets(true);
|
||
*
|
||
* @param close - whether to close the underlying connection
|
||
*/
|
||
disconnectSockets(close?: boolean): void;
|
||
}
|
||
export { Socket, DisconnectReason, ServerOptions, Namespace, BroadcastOperator, RemoteSocket, };
|
||
export { Event } from "./socket";
|