broadcast-operator.d.ts 10 KB

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  1. import type { BroadcastFlags, Room, SocketId } from "socket.io-adapter";
  2. import { Handshake } from "./socket";
  3. import type { Adapter } from "socket.io-adapter";
  4. import type { EventParams, EventNames, EventsMap, TypedEventBroadcaster, DecorateAcknowledgements, AllButLast, Last, FirstNonErrorArg, EventNamesWithError } from "./typed-events";
  5. export declare class BroadcastOperator<EmitEvents extends EventsMap, SocketData> implements TypedEventBroadcaster<EmitEvents> {
  6. private readonly adapter;
  7. private readonly rooms;
  8. private readonly exceptRooms;
  9. private readonly flags;
  10. constructor(adapter: Adapter, rooms?: Set<Room>, exceptRooms?: Set<Room>, flags?: BroadcastFlags & {
  11. expectSingleResponse?: boolean;
  12. });
  13. /**
  14. * Targets a room when emitting.
  15. *
  16. * @example
  17. * // the “foo” event will be broadcast to all connected clients in the “room-101” room
  18. * io.to("room-101").emit("foo", "bar");
  19. *
  20. * // with an array of rooms (a client will be notified at most once)
  21. * io.to(["room-101", "room-102"]).emit("foo", "bar");
  22. *
  23. * // with multiple chained calls
  24. * io.to("room-101").to("room-102").emit("foo", "bar");
  25. *
  26. * @param room - a room, or an array of rooms
  27. * @return a new {@link BroadcastOperator} instance for chaining
  28. */
  29. to(room: Room | Room[]): BroadcastOperator<EmitEvents, SocketData>;
  30. /**
  31. * Targets a room when emitting. Similar to `to()`, but might feel clearer in some cases:
  32. *
  33. * @example
  34. * // disconnect all clients in the "room-101" room
  35. * io.in("room-101").disconnectSockets();
  36. *
  37. * @param room - a room, or an array of rooms
  38. * @return a new {@link BroadcastOperator} instance for chaining
  39. */
  40. in(room: Room | Room[]): BroadcastOperator<EmitEvents, SocketData>;
  41. /**
  42. * Excludes a room when emitting.
  43. *
  44. * @example
  45. * // the "foo" event will be broadcast to all connected clients, except the ones that are in the "room-101" room
  46. * io.except("room-101").emit("foo", "bar");
  47. *
  48. * // with an array of rooms
  49. * io.except(["room-101", "room-102"]).emit("foo", "bar");
  50. *
  51. * // with multiple chained calls
  52. * io.except("room-101").except("room-102").emit("foo", "bar");
  53. *
  54. * @param room - a room, or an array of rooms
  55. * @return a new {@link BroadcastOperator} instance for chaining
  56. */
  57. except(room: Room | Room[]): BroadcastOperator<EmitEvents, SocketData>;
  58. /**
  59. * Sets the compress flag.
  60. *
  61. * @example
  62. * io.compress(false).emit("hello");
  63. *
  64. * @param compress - if `true`, compresses the sending data
  65. * @return a new BroadcastOperator instance
  66. */
  67. compress(compress: boolean): BroadcastOperator<EmitEvents, SocketData>;
  68. /**
  69. * Sets a modifier for a subsequent event emission that the event data may be lost if the client is not ready to
  70. * receive messages (because of network slowness or other issues, or because they’re connected through long polling
  71. * and is in the middle of a request-response cycle).
  72. *
  73. * @example
  74. * io.volatile.emit("hello"); // the clients may or may not receive it
  75. *
  76. * @return a new BroadcastOperator instance
  77. */
  78. get volatile(): BroadcastOperator<EmitEvents, SocketData>;
  79. /**
  80. * Sets a modifier for a subsequent event emission that the event data will only be broadcast to the current node.
  81. *
  82. * @example
  83. * // the “foo” event will be broadcast to all connected clients on this node
  84. * io.local.emit("foo", "bar");
  85. *
  86. * @return a new {@link BroadcastOperator} instance for chaining
  87. */
  88. get local(): BroadcastOperator<EmitEvents, SocketData>;
  89. /**
  90. * Adds a timeout in milliseconds for the next operation
  91. *
  92. * @example
  93. * io.timeout(1000).emit("some-event", (err, responses) => {
  94. * if (err) {
  95. * // some clients did not acknowledge the event in the given delay
  96. * } else {
  97. * console.log(responses); // one response per client
  98. * }
  99. * });
  100. *
  101. * @param timeout
  102. */
  103. timeout(timeout: number): BroadcastOperator<DecorateAcknowledgements<EmitEvents>, SocketData>;
  104. /**
  105. * Emits to all clients.
  106. *
  107. * @example
  108. * // the “foo” event will be broadcast to all connected clients
  109. * io.emit("foo", "bar");
  110. *
  111. * // the “foo” event will be broadcast to all connected clients in the “room-101” room
  112. * io.to("room-101").emit("foo", "bar");
  113. *
  114. * // with an acknowledgement expected from all connected clients
  115. * io.timeout(1000).emit("some-event", (err, responses) => {
  116. * if (err) {
  117. * // some clients did not acknowledge the event in the given delay
  118. * } else {
  119. * console.log(responses); // one response per client
  120. * }
  121. * });
  122. *
  123. * @return Always true
  124. */
  125. emit<Ev extends EventNames<EmitEvents>>(ev: Ev, ...args: EventParams<EmitEvents, Ev>): boolean;
  126. /**
  127. * Emits an event and waits for an acknowledgement from all clients.
  128. *
  129. * @example
  130. * try {
  131. * const responses = await io.timeout(1000).emitWithAck("some-event");
  132. * console.log(responses); // one response per client
  133. * } catch (e) {
  134. * // some clients did not acknowledge the event in the given delay
  135. * }
  136. *
  137. * @return a Promise that will be fulfilled when all clients have acknowledged the event
  138. */
  139. emitWithAck<Ev extends EventNamesWithError<EmitEvents>>(ev: Ev, ...args: AllButLast<EventParams<EmitEvents, Ev>>): Promise<FirstNonErrorArg<Last<EventParams<EmitEvents, Ev>>>>;
  140. /**
  141. * Gets a list of clients.
  142. *
  143. * @deprecated this method will be removed in the next major release, please use {@link Server#serverSideEmit} or
  144. * {@link fetchSockets} instead.
  145. */
  146. allSockets(): Promise<Set<SocketId>>;
  147. /**
  148. * Returns the matching socket instances. This method works across a cluster of several Socket.IO servers.
  149. *
  150. * Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
  151. *
  152. * @example
  153. * // return all Socket instances
  154. * const sockets = await io.fetchSockets();
  155. *
  156. * // return all Socket instances in the "room1" room
  157. * const sockets = await io.in("room1").fetchSockets();
  158. *
  159. * for (const socket of sockets) {
  160. * console.log(socket.id);
  161. * console.log(socket.handshake);
  162. * console.log(socket.rooms);
  163. * console.log(socket.data);
  164. *
  165. * socket.emit("hello");
  166. * socket.join("room1");
  167. * socket.leave("room2");
  168. * socket.disconnect();
  169. * }
  170. */
  171. fetchSockets(): Promise<RemoteSocket<EmitEvents, SocketData>[]>;
  172. /**
  173. * Makes the matching socket instances join the specified rooms.
  174. *
  175. * Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
  176. *
  177. * @example
  178. *
  179. * // make all socket instances join the "room1" room
  180. * io.socketsJoin("room1");
  181. *
  182. * // make all socket instances in the "room1" room join the "room2" and "room3" rooms
  183. * io.in("room1").socketsJoin(["room2", "room3"]);
  184. *
  185. * @param room - a room, or an array of rooms
  186. */
  187. socketsJoin(room: Room | Room[]): void;
  188. /**
  189. * Makes the matching socket instances leave the specified rooms.
  190. *
  191. * Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
  192. *
  193. * @example
  194. * // make all socket instances leave the "room1" room
  195. * io.socketsLeave("room1");
  196. *
  197. * // make all socket instances in the "room1" room leave the "room2" and "room3" rooms
  198. * io.in("room1").socketsLeave(["room2", "room3"]);
  199. *
  200. * @param room - a room, or an array of rooms
  201. */
  202. socketsLeave(room: Room | Room[]): void;
  203. /**
  204. * Makes the matching socket instances disconnect.
  205. *
  206. * Note: this method also works within a cluster of multiple Socket.IO servers, with a compatible {@link Adapter}.
  207. *
  208. * @example
  209. * // make all socket instances disconnect (the connections might be kept alive for other namespaces)
  210. * io.disconnectSockets();
  211. *
  212. * // make all socket instances in the "room1" room disconnect and close the underlying connections
  213. * io.in("room1").disconnectSockets(true);
  214. *
  215. * @param close - whether to close the underlying connection
  216. */
  217. disconnectSockets(close?: boolean): void;
  218. }
  219. /**
  220. * Format of the data when the Socket instance exists on another Socket.IO server
  221. */
  222. interface SocketDetails<SocketData> {
  223. id: SocketId;
  224. handshake: Handshake;
  225. rooms: Room[];
  226. data: SocketData;
  227. }
  228. /**
  229. * Expose of subset of the attributes and methods of the Socket class
  230. */
  231. export declare class RemoteSocket<EmitEvents extends EventsMap, SocketData> implements TypedEventBroadcaster<EmitEvents> {
  232. readonly id: SocketId;
  233. readonly handshake: Handshake;
  234. readonly rooms: Set<Room>;
  235. readonly data: SocketData;
  236. private readonly operator;
  237. constructor(adapter: Adapter, details: SocketDetails<SocketData>);
  238. /**
  239. * Adds a timeout in milliseconds for the next operation.
  240. *
  241. * @example
  242. * const sockets = await io.fetchSockets();
  243. *
  244. * for (const socket of sockets) {
  245. * if (someCondition) {
  246. * socket.timeout(1000).emit("some-event", (err) => {
  247. * if (err) {
  248. * // the client did not acknowledge the event in the given delay
  249. * }
  250. * });
  251. * }
  252. * }
  253. *
  254. * // note: if possible, using a room instead of looping over all sockets is preferable
  255. * io.timeout(1000).to(someConditionRoom).emit("some-event", (err, responses) => {
  256. * // ...
  257. * });
  258. *
  259. * @param timeout
  260. */
  261. timeout(timeout: number): BroadcastOperator<DecorateAcknowledgements<EmitEvents>, SocketData>;
  262. emit<Ev extends EventNames<EmitEvents>>(ev: Ev, ...args: EventParams<EmitEvents, Ev>): boolean;
  263. /**
  264. * Joins a room.
  265. *
  266. * @param {String|Array} room - room or array of rooms
  267. */
  268. join(room: Room | Room[]): void;
  269. /**
  270. * Leaves a room.
  271. *
  272. * @param {String} room
  273. */
  274. leave(room: Room): void;
  275. /**
  276. * Disconnects this client.
  277. *
  278. * @param {Boolean} close - if `true`, closes the underlying connection
  279. * @return {Socket} self
  280. */
  281. disconnect(close?: boolean): this;
  282. }
  283. export {};