427 lines
16 KiB
TypeScript
427 lines
16 KiB
TypeScript
import { Socket } from "./socket";
|
||
import type { Server } from "./index";
|
||
import { EventParams, EventNames, EventsMap, StrictEventEmitter, DefaultEventsMap, DecorateAcknowledgementsWithTimeoutAndMultipleResponses, AllButLast, Last, DecorateAcknowledgementsWithMultipleResponses, DecorateAcknowledgements, RemoveAcknowledgements, EventNamesWithAck, FirstNonErrorArg, EventNamesWithoutAck } from "./typed-events";
|
||
import type { Client } from "./client";
|
||
import type { Adapter, Room, SocketId } from "socket.io-adapter";
|
||
import { BroadcastOperator } from "./broadcast-operator";
|
||
export interface ExtendedError extends Error {
|
||
data?: any;
|
||
}
|
||
export interface NamespaceReservedEventsMap<ListenEvents extends EventsMap, EmitEvents extends EventsMap, ServerSideEvents extends EventsMap, SocketData> {
|
||
connect: (socket: Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>) => void;
|
||
connection: (socket: Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>) => void;
|
||
}
|
||
export interface ServerReservedEventsMap<ListenEvents extends EventsMap, EmitEvents extends EventsMap, ServerSideEvents extends EventsMap, SocketData> extends NamespaceReservedEventsMap<ListenEvents, EmitEvents, ServerSideEvents, SocketData> {
|
||
new_namespace: (namespace: Namespace<ListenEvents, EmitEvents, ServerSideEvents, SocketData>) => void;
|
||
}
|
||
export declare const RESERVED_EVENTS: ReadonlySet<string | Symbol>;
|
||
/**
|
||
* A Namespace is a communication channel that allows you to split the logic of your application over a single shared
|
||
* connection.
|
||
*
|
||
* Each namespace has its own:
|
||
*
|
||
* - event handlers
|
||
*
|
||
* ```
|
||
* io.of("/orders").on("connection", (socket) => {
|
||
* socket.on("order:list", () => {});
|
||
* socket.on("order:create", () => {});
|
||
* });
|
||
*
|
||
* io.of("/users").on("connection", (socket) => {
|
||
* socket.on("user:list", () => {});
|
||
* });
|
||
* ```
|
||
*
|
||
* - rooms
|
||
*
|
||
* ```
|
||
* const orderNamespace = io.of("/orders");
|
||
*
|
||
* orderNamespace.on("connection", (socket) => {
|
||
* socket.join("room1");
|
||
* orderNamespace.to("room1").emit("hello");
|
||
* });
|
||
*
|
||
* const userNamespace = io.of("/users");
|
||
*
|
||
* userNamespace.on("connection", (socket) => {
|
||
* socket.join("room1"); // distinct from the room in the "orders" namespace
|
||
* userNamespace.to("room1").emit("holà");
|
||
* });
|
||
* ```
|
||
*
|
||
* - middlewares
|
||
*
|
||
* ```
|
||
* const orderNamespace = io.of("/orders");
|
||
*
|
||
* orderNamespace.use((socket, next) => {
|
||
* // ensure the socket has access to the "orders" namespace
|
||
* });
|
||
*
|
||
* const userNamespace = io.of("/users");
|
||
*
|
||
* userNamespace.use((socket, next) => {
|
||
* // ensure the socket has access to the "users" namespace
|
||
* });
|
||
* ```
|
||
*/
|
||
export declare class Namespace<ListenEvents extends EventsMap = DefaultEventsMap, EmitEvents extends EventsMap = ListenEvents, ServerSideEvents extends EventsMap = DefaultEventsMap, SocketData = any> extends StrictEventEmitter<ServerSideEvents, RemoveAcknowledgements<EmitEvents>, NamespaceReservedEventsMap<ListenEvents, EmitEvents, ServerSideEvents, SocketData>> {
|
||
readonly name: string;
|
||
readonly sockets: Map<SocketId, Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>>;
|
||
adapter: Adapter;
|
||
/** @private */
|
||
readonly server: Server<ListenEvents, EmitEvents, ServerSideEvents, SocketData>;
|
||
/** @private */
|
||
_fns: Array<(socket: Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>, next: (err?: ExtendedError) => void) => void>;
|
||
/** @private */
|
||
_ids: number;
|
||
/**
|
||
* Namespace constructor.
|
||
*
|
||
* @param server instance
|
||
* @param name
|
||
*/
|
||
constructor(server: Server<ListenEvents, EmitEvents, ServerSideEvents, SocketData>, name: string);
|
||
/**
|
||
* Initializes the `Adapter` for this nsp.
|
||
* Run upon changing adapter by `Server#adapter`
|
||
* in addition to the constructor.
|
||
*
|
||
* @private
|
||
*/
|
||
_initAdapter(): void;
|
||
/**
|
||
* Registers a middleware, which is a function that gets executed for every incoming {@link Socket}.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* myNamespace.use((socket, next) => {
|
||
* // ...
|
||
* next();
|
||
* });
|
||
*
|
||
* @param fn - the middleware function
|
||
*/
|
||
use(fn: (socket: Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>, next: (err?: ExtendedError) => void) => void): this;
|
||
/**
|
||
* Executes the middleware for an incoming client.
|
||
*
|
||
* @param socket - the socket that will get added
|
||
* @param fn - last fn call in the middleware
|
||
* @private
|
||
*/
|
||
private run;
|
||
/**
|
||
* Targets a room when emitting.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* // the “foo” event will be broadcast to all connected clients in the “room-101” room
|
||
* myNamespace.to("room-101").emit("foo", "bar");
|
||
*
|
||
* // with an array of rooms (a client will be notified at most once)
|
||
* myNamespace.to(["room-101", "room-102"]).emit("foo", "bar");
|
||
*
|
||
* // with multiple chained calls
|
||
* myNamespace.to("room-101").to("room-102").emit("foo", "bar");
|
||
*
|
||
* @param room - a room, or an array of rooms
|
||
* @return a new {@link BroadcastOperator} instance for chaining
|
||
*/
|
||
to(room: Room | Room[]): BroadcastOperator<DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
|
||
/**
|
||
* Targets a room when emitting. Similar to `to()`, but might feel clearer in some cases:
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* // disconnect all clients in the "room-101" room
|
||
* myNamespace.in("room-101").disconnectSockets();
|
||
*
|
||
* @param room - a room, or an array of rooms
|
||
* @return a new {@link BroadcastOperator} instance for chaining
|
||
*/
|
||
in(room: Room | Room[]): BroadcastOperator<DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
|
||
/**
|
||
* Excludes a room when emitting.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* // the "foo" event will be broadcast to all connected clients, except the ones that are in the "room-101" room
|
||
* myNamespace.except("room-101").emit("foo", "bar");
|
||
*
|
||
* // with an array of rooms
|
||
* myNamespace.except(["room-101", "room-102"]).emit("foo", "bar");
|
||
*
|
||
* // with multiple chained calls
|
||
* myNamespace.except("room-101").except("room-102").emit("foo", "bar");
|
||
*
|
||
* @param room - a room, or an array of rooms
|
||
* @return a new {@link BroadcastOperator} instance for chaining
|
||
*/
|
||
except(room: Room | Room[]): BroadcastOperator<DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
|
||
/**
|
||
* Adds a new client.
|
||
*
|
||
* @return {Socket}
|
||
* @private
|
||
*/
|
||
_add(client: Client<ListenEvents, EmitEvents, ServerSideEvents>, auth: Record<string, unknown>, fn: (socket: Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>) => void): any;
|
||
private _createSocket;
|
||
private _doConnect;
|
||
/**
|
||
* Removes a client. Called by each `Socket`.
|
||
*
|
||
* @private
|
||
*/
|
||
_remove(socket: Socket<ListenEvents, EmitEvents, ServerSideEvents, SocketData>): void;
|
||
/**
|
||
* Emits to all connected clients.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* myNamespace.emit("hello", "world");
|
||
*
|
||
* // all serializable datastructures are supported (no need to call JSON.stringify)
|
||
* myNamespace.emit("hello", 1, "2", { 3: ["4"], 5: Uint8Array.from([6]) });
|
||
*
|
||
* // with an acknowledgement from the clients
|
||
* myNamespace.timeout(1000).emit("some-event", (err, responses) => {
|
||
* if (err) {
|
||
* // some clients did not acknowledge the event in the given delay
|
||
* } else {
|
||
* console.log(responses); // one response per client
|
||
* }
|
||
* });
|
||
*
|
||
* @return Always true
|
||
*/
|
||
emit<Ev extends EventNamesWithoutAck<EmitEvents>>(ev: Ev, ...args: EventParams<EmitEvents, Ev>): boolean;
|
||
/**
|
||
* Sends a `message` event to all clients.
|
||
*
|
||
* This method mimics the WebSocket.send() method.
|
||
*
|
||
* @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* myNamespace.send("hello");
|
||
*
|
||
* // this is equivalent to
|
||
* myNamespace.emit("message", "hello");
|
||
*
|
||
* @return self
|
||
*/
|
||
send(...args: EventParams<EmitEvents, "message">): this;
|
||
/**
|
||
* Sends a `message` event to all clients. Sends a `message` event. Alias of {@link send}.
|
||
*
|
||
* @return self
|
||
*/
|
||
write(...args: EventParams<EmitEvents, "message">): this;
|
||
/**
|
||
* Sends a message to the other Socket.IO servers of the cluster.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* myNamespace.serverSideEmit("hello", "world");
|
||
*
|
||
* myNamespace.on("hello", (arg1) => {
|
||
* console.log(arg1); // prints "world"
|
||
* });
|
||
*
|
||
* // acknowledgements (without binary content) are supported too:
|
||
* myNamespace.serverSideEmit("ping", (err, responses) => {
|
||
* if (err) {
|
||
* // some servers did not acknowledge the event in the given delay
|
||
* } else {
|
||
* console.log(responses); // one response per server (except the current one)
|
||
* }
|
||
* });
|
||
*
|
||
* myNamespace.on("ping", (cb) => {
|
||
* cb("pong");
|
||
* });
|
||
*
|
||
* @param ev - the event name
|
||
* @param args - an array of arguments, which may include an acknowledgement callback at the end
|
||
*/
|
||
serverSideEmit<Ev extends EventNames<ServerSideEvents>>(ev: Ev, ...args: EventParams<DecorateAcknowledgementsWithTimeoutAndMultipleResponses<ServerSideEvents>, Ev>): boolean;
|
||
/**
|
||
* Sends a message and expect an acknowledgement from the other Socket.IO servers of the cluster.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* try {
|
||
* const responses = await myNamespace.serverSideEmitWithAck("ping");
|
||
* console.log(responses); // one response per server (except the current one)
|
||
* } catch (e) {
|
||
* // some servers did not acknowledge the event in the given delay
|
||
* }
|
||
*
|
||
* @param ev - the event name
|
||
* @param args - an array of arguments
|
||
*
|
||
* @return a Promise that will be fulfilled when all servers have acknowledged the event
|
||
*/
|
||
serverSideEmitWithAck<Ev extends EventNamesWithAck<ServerSideEvents>>(ev: Ev, ...args: AllButLast<EventParams<ServerSideEvents, Ev>>): Promise<FirstNonErrorArg<Last<EventParams<ServerSideEvents, Ev>>>[]>;
|
||
/**
|
||
* Called when a packet is received from another Socket.IO server
|
||
*
|
||
* @param args - an array of arguments, which may include an acknowledgement callback at the end
|
||
*
|
||
* @private
|
||
*/
|
||
_onServerSideEmit(args: [string, ...any[]]): void;
|
||
/**
|
||
* Gets a list of clients.
|
||
*
|
||
* @deprecated this method will be removed in the next major release, please use {@link Namespace#serverSideEmit} or
|
||
* {@link Namespace#fetchSockets} instead.
|
||
*/
|
||
allSockets(): Promise<Set<SocketId>>;
|
||
/**
|
||
* Sets the compress flag.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* myNamespace.compress(false).emit("hello");
|
||
*
|
||
* @param compress - if `true`, compresses the sending data
|
||
* @return self
|
||
*/
|
||
compress(compress: boolean): BroadcastOperator<DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
|
||
/**
|
||
* Sets a modifier for a subsequent event emission that the event data may be lost if the client is not ready to
|
||
* receive messages (because of network slowness or other issues, or because they’re connected through long polling
|
||
* and is in the middle of a request-response cycle).
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* myNamespace.volatile.emit("hello"); // the clients may or may not receive it
|
||
*
|
||
* @return self
|
||
*/
|
||
get volatile(): BroadcastOperator<DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
|
||
/**
|
||
* Sets a modifier for a subsequent event emission that the event data will only be broadcast to the current node.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* // the “foo” event will be broadcast to all connected clients on this node
|
||
* myNamespace.local.emit("foo", "bar");
|
||
*
|
||
* @return a new {@link BroadcastOperator} instance for chaining
|
||
*/
|
||
get local(): BroadcastOperator<DecorateAcknowledgementsWithMultipleResponses<EmitEvents>, SocketData>;
|
||
/**
|
||
* Adds a timeout in milliseconds for the next operation.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* myNamespace.timeout(1000).emit("some-event", (err, responses) => {
|
||
* if (err) {
|
||
* // some clients did not acknowledge the event in the given delay
|
||
* } else {
|
||
* console.log(responses); // one response per client
|
||
* }
|
||
* });
|
||
*
|
||
* @param timeout
|
||
*/
|
||
timeout(timeout: number): BroadcastOperator<DecorateAcknowledgements<DecorateAcknowledgementsWithMultipleResponses<EmitEvents>>, SocketData>;
|
||
/**
|
||
* Returns the matching socket instances.
|
||
*
|
||
* Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* // return all Socket instances
|
||
* const sockets = await myNamespace.fetchSockets();
|
||
*
|
||
* // return all Socket instances in the "room1" room
|
||
* const sockets = await myNamespace.in("room1").fetchSockets();
|
||
*
|
||
* for (const socket of sockets) {
|
||
* console.log(socket.id);
|
||
* console.log(socket.handshake);
|
||
* console.log(socket.rooms);
|
||
* console.log(socket.data);
|
||
*
|
||
* socket.emit("hello");
|
||
* socket.join("room1");
|
||
* socket.leave("room2");
|
||
* socket.disconnect();
|
||
* }
|
||
*/
|
||
fetchSockets(): Promise<import("./broadcast-operator").RemoteSocket<EmitEvents, SocketData>[]>;
|
||
/**
|
||
* Makes the matching socket instances join the specified rooms.
|
||
*
|
||
* Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* // make all socket instances join the "room1" room
|
||
* myNamespace.socketsJoin("room1");
|
||
*
|
||
* // make all socket instances in the "room1" room join the "room2" and "room3" rooms
|
||
* myNamespace.in("room1").socketsJoin(["room2", "room3"]);
|
||
*
|
||
* @param room - a room, or an array of rooms
|
||
*/
|
||
socketsJoin(room: Room | Room[]): void;
|
||
/**
|
||
* Makes the matching socket instances leave the specified rooms.
|
||
*
|
||
* Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
|
||
*
|
||
* @example
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* // make all socket instances leave the "room1" room
|
||
* myNamespace.socketsLeave("room1");
|
||
*
|
||
* // make all socket instances in the "room1" room leave the "room2" and "room3" rooms
|
||
* myNamespace.in("room1").socketsLeave(["room2", "room3"]);
|
||
*
|
||
* @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
|
||
* const myNamespace = io.of("/my-namespace");
|
||
*
|
||
* // make all socket instances disconnect (the connections might be kept alive for other namespaces)
|
||
* myNamespace.disconnectSockets();
|
||
*
|
||
* // make all socket instances in the "room1" room disconnect and close the underlying connections
|
||
* myNamespace.in("room1").disconnectSockets(true);
|
||
*
|
||
* @param close - whether to close the underlying connection
|
||
*/
|
||
disconnectSockets(close?: boolean): void;
|
||
}
|