867 lines
25 KiB
JavaScript
867 lines
25 KiB
JavaScript
"use strict";
|
|
var __importDefault = (this && this.__importDefault) || function (mod) {
|
|
return (mod && mod.__esModule) ? mod : { "default": mod };
|
|
};
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.Socket = void 0;
|
|
const socket_io_parser_1 = require("socket.io-parser");
|
|
const on_js_1 = require("./on.js");
|
|
const component_emitter_1 = require("@socket.io/component-emitter");
|
|
const debug_1 = __importDefault(require("debug")); // debug()
|
|
const debug = debug_1.default("socket.io-client:socket"); // debug()
|
|
/**
|
|
* Internal events.
|
|
* These events can't be emitted by the user.
|
|
*/
|
|
const RESERVED_EVENTS = Object.freeze({
|
|
connect: 1,
|
|
connect_error: 1,
|
|
disconnect: 1,
|
|
disconnecting: 1,
|
|
// EventEmitter reserved events: https://nodejs.org/api/events.html#events_event_newlistener
|
|
newListener: 1,
|
|
removeListener: 1,
|
|
});
|
|
/**
|
|
* A Socket is the fundamental class for interacting with the server.
|
|
*
|
|
* A Socket belongs to a certain Namespace (by default /) and uses an underlying {@link Manager} to communicate.
|
|
*
|
|
* @example
|
|
* const socket = io();
|
|
*
|
|
* socket.on("connect", () => {
|
|
* console.log("connected");
|
|
* });
|
|
*
|
|
* // send an event to the server
|
|
* socket.emit("foo", "bar");
|
|
*
|
|
* socket.on("foobar", () => {
|
|
* // an event was received from the server
|
|
* });
|
|
*
|
|
* // upon disconnection
|
|
* socket.on("disconnect", (reason) => {
|
|
* console.log(`disconnected due to ${reason}`);
|
|
* });
|
|
*/
|
|
class Socket extends component_emitter_1.Emitter {
|
|
/**
|
|
* `Socket` constructor.
|
|
*/
|
|
constructor(io, nsp, opts) {
|
|
super();
|
|
/**
|
|
* Whether the socket is currently connected to the server.
|
|
*
|
|
* @example
|
|
* const socket = io();
|
|
*
|
|
* socket.on("connect", () => {
|
|
* console.log(socket.connected); // true
|
|
* });
|
|
*
|
|
* socket.on("disconnect", () => {
|
|
* console.log(socket.connected); // false
|
|
* });
|
|
*/
|
|
this.connected = false;
|
|
/**
|
|
* Whether the connection state was recovered after a temporary disconnection. In that case, any missed packets will
|
|
* be transmitted by the server.
|
|
*/
|
|
this.recovered = false;
|
|
/**
|
|
* Buffer for packets received before the CONNECT packet
|
|
*/
|
|
this.receiveBuffer = [];
|
|
/**
|
|
* Buffer for packets that will be sent once the socket is connected
|
|
*/
|
|
this.sendBuffer = [];
|
|
/**
|
|
* The queue of packets to be sent with retry in case of failure.
|
|
*
|
|
* Packets are sent one by one, each waiting for the server acknowledgement, in order to guarantee the delivery order.
|
|
* @private
|
|
*/
|
|
this._queue = [];
|
|
/**
|
|
* A sequence to generate the ID of the {@link QueuedPacket}.
|
|
* @private
|
|
*/
|
|
this._queueSeq = 0;
|
|
this.ids = 0;
|
|
this.acks = {};
|
|
this.flags = {};
|
|
this.io = io;
|
|
this.nsp = nsp;
|
|
if (opts && opts.auth) {
|
|
this.auth = opts.auth;
|
|
}
|
|
this._opts = Object.assign({}, opts);
|
|
if (this.io._autoConnect)
|
|
this.open();
|
|
}
|
|
/**
|
|
* Whether the socket is currently disconnected
|
|
*
|
|
* @example
|
|
* const socket = io();
|
|
*
|
|
* socket.on("connect", () => {
|
|
* console.log(socket.disconnected); // false
|
|
* });
|
|
*
|
|
* socket.on("disconnect", () => {
|
|
* console.log(socket.disconnected); // true
|
|
* });
|
|
*/
|
|
get disconnected() {
|
|
return !this.connected;
|
|
}
|
|
/**
|
|
* Subscribe to open, close and packet events
|
|
*
|
|
* @private
|
|
*/
|
|
subEvents() {
|
|
if (this.subs)
|
|
return;
|
|
const io = this.io;
|
|
this.subs = [
|
|
on_js_1.on(io, "open", this.onopen.bind(this)),
|
|
on_js_1.on(io, "packet", this.onpacket.bind(this)),
|
|
on_js_1.on(io, "error", this.onerror.bind(this)),
|
|
on_js_1.on(io, "close", this.onclose.bind(this)),
|
|
];
|
|
}
|
|
/**
|
|
* Whether the Socket will try to reconnect when its Manager connects or reconnects.
|
|
*
|
|
* @example
|
|
* const socket = io();
|
|
*
|
|
* console.log(socket.active); // true
|
|
*
|
|
* socket.on("disconnect", (reason) => {
|
|
* if (reason === "io server disconnect") {
|
|
* // the disconnection was initiated by the server, you need to manually reconnect
|
|
* console.log(socket.active); // false
|
|
* }
|
|
* // else the socket will automatically try to reconnect
|
|
* console.log(socket.active); // true
|
|
* });
|
|
*/
|
|
get active() {
|
|
return !!this.subs;
|
|
}
|
|
/**
|
|
* "Opens" the socket.
|
|
*
|
|
* @example
|
|
* const socket = io({
|
|
* autoConnect: false
|
|
* });
|
|
*
|
|
* socket.connect();
|
|
*/
|
|
connect() {
|
|
if (this.connected)
|
|
return this;
|
|
this.subEvents();
|
|
if (!this.io["_reconnecting"])
|
|
this.io.open(); // ensure open
|
|
if ("open" === this.io._readyState)
|
|
this.onopen();
|
|
return this;
|
|
}
|
|
/**
|
|
* Alias for {@link connect()}.
|
|
*/
|
|
open() {
|
|
return this.connect();
|
|
}
|
|
/**
|
|
* Sends a `message` event.
|
|
*
|
|
* This method mimics the WebSocket.send() method.
|
|
*
|
|
* @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket/send
|
|
*
|
|
* @example
|
|
* socket.send("hello");
|
|
*
|
|
* // this is equivalent to
|
|
* socket.emit("message", "hello");
|
|
*
|
|
* @return self
|
|
*/
|
|
send(...args) {
|
|
args.unshift("message");
|
|
this.emit.apply(this, args);
|
|
return this;
|
|
}
|
|
/**
|
|
* Override `emit`.
|
|
* If the event is in `events`, it's emitted normally.
|
|
*
|
|
* @example
|
|
* socket.emit("hello", "world");
|
|
*
|
|
* // all serializable datastructures are supported (no need to call JSON.stringify)
|
|
* socket.emit("hello", 1, "2", { 3: ["4"], 5: Uint8Array.from([6]) });
|
|
*
|
|
* // with an acknowledgement from the server
|
|
* socket.emit("hello", "world", (val) => {
|
|
* // ...
|
|
* });
|
|
*
|
|
* @return self
|
|
*/
|
|
emit(ev, ...args) {
|
|
if (RESERVED_EVENTS.hasOwnProperty(ev)) {
|
|
throw new Error('"' + ev.toString() + '" is a reserved event name');
|
|
}
|
|
args.unshift(ev);
|
|
if (this._opts.retries && !this.flags.fromQueue && !this.flags.volatile) {
|
|
this._addToQueue(args);
|
|
return this;
|
|
}
|
|
const packet = {
|
|
type: socket_io_parser_1.PacketType.EVENT,
|
|
data: args,
|
|
};
|
|
packet.options = {};
|
|
packet.options.compress = this.flags.compress !== false;
|
|
// event ack callback
|
|
if ("function" === typeof args[args.length - 1]) {
|
|
const id = this.ids++;
|
|
debug("emitting packet with ack id %d", id);
|
|
const ack = args.pop();
|
|
this._registerAckCallback(id, ack);
|
|
packet.id = id;
|
|
}
|
|
const isTransportWritable = this.io.engine &&
|
|
this.io.engine.transport &&
|
|
this.io.engine.transport.writable;
|
|
const discardPacket = this.flags.volatile && (!isTransportWritable || !this.connected);
|
|
if (discardPacket) {
|
|
debug("discard packet as the transport is not currently writable");
|
|
}
|
|
else if (this.connected) {
|
|
this.notifyOutgoingListeners(packet);
|
|
this.packet(packet);
|
|
}
|
|
else {
|
|
this.sendBuffer.push(packet);
|
|
}
|
|
this.flags = {};
|
|
return this;
|
|
}
|
|
/**
|
|
* @private
|
|
*/
|
|
_registerAckCallback(id, ack) {
|
|
var _a;
|
|
const timeout = (_a = this.flags.timeout) !== null && _a !== void 0 ? _a : this._opts.ackTimeout;
|
|
if (timeout === undefined) {
|
|
this.acks[id] = ack;
|
|
return;
|
|
}
|
|
// @ts-ignore
|
|
const timer = this.io.setTimeoutFn(() => {
|
|
delete this.acks[id];
|
|
for (let i = 0; i < this.sendBuffer.length; i++) {
|
|
if (this.sendBuffer[i].id === id) {
|
|
debug("removing packet with ack id %d from the buffer", id);
|
|
this.sendBuffer.splice(i, 1);
|
|
}
|
|
}
|
|
debug("event with ack id %d has timed out after %d ms", id, timeout);
|
|
ack.call(this, new Error("operation has timed out"));
|
|
}, timeout);
|
|
this.acks[id] = (...args) => {
|
|
// @ts-ignore
|
|
this.io.clearTimeoutFn(timer);
|
|
ack.apply(this, [null, ...args]);
|
|
};
|
|
}
|
|
/**
|
|
* Emits an event and waits for an acknowledgement
|
|
*
|
|
* @example
|
|
* // without timeout
|
|
* const response = await socket.emitWithAck("hello", "world");
|
|
*
|
|
* // with a specific timeout
|
|
* try {
|
|
* const response = await socket.timeout(1000).emitWithAck("hello", "world");
|
|
* } catch (err) {
|
|
* // the server did not acknowledge the event in the given delay
|
|
* }
|
|
*
|
|
* @return a Promise that will be fulfilled when the server acknowledges the event
|
|
*/
|
|
emitWithAck(ev, ...args) {
|
|
// the timeout flag is optional
|
|
const withErr = this.flags.timeout !== undefined || this._opts.ackTimeout !== undefined;
|
|
return new Promise((resolve, reject) => {
|
|
args.push((arg1, arg2) => {
|
|
if (withErr) {
|
|
return arg1 ? reject(arg1) : resolve(arg2);
|
|
}
|
|
else {
|
|
return resolve(arg1);
|
|
}
|
|
});
|
|
this.emit(ev, ...args);
|
|
});
|
|
}
|
|
/**
|
|
* Add the packet to the queue.
|
|
* @param args
|
|
* @private
|
|
*/
|
|
_addToQueue(args) {
|
|
let ack;
|
|
if (typeof args[args.length - 1] === "function") {
|
|
ack = args.pop();
|
|
}
|
|
const packet = {
|
|
id: this._queueSeq++,
|
|
tryCount: 0,
|
|
pending: false,
|
|
args,
|
|
flags: Object.assign({ fromQueue: true }, this.flags),
|
|
};
|
|
args.push((err, ...responseArgs) => {
|
|
if (packet !== this._queue[0]) {
|
|
// the packet has already been acknowledged
|
|
return;
|
|
}
|
|
const hasError = err !== null;
|
|
if (hasError) {
|
|
if (packet.tryCount > this._opts.retries) {
|
|
debug("packet [%d] is discarded after %d tries", packet.id, packet.tryCount);
|
|
this._queue.shift();
|
|
if (ack) {
|
|
ack(err);
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
debug("packet [%d] was successfully sent", packet.id);
|
|
this._queue.shift();
|
|
if (ack) {
|
|
ack(null, ...responseArgs);
|
|
}
|
|
}
|
|
packet.pending = false;
|
|
return this._drainQueue();
|
|
});
|
|
this._queue.push(packet);
|
|
this._drainQueue();
|
|
}
|
|
/**
|
|
* Send the first packet of the queue, and wait for an acknowledgement from the server.
|
|
* @param force - whether to resend a packet that has not been acknowledged yet
|
|
*
|
|
* @private
|
|
*/
|
|
_drainQueue(force = false) {
|
|
debug("draining queue");
|
|
if (!this.connected || this._queue.length === 0) {
|
|
return;
|
|
}
|
|
const packet = this._queue[0];
|
|
if (packet.pending && !force) {
|
|
debug("packet [%d] has already been sent and is waiting for an ack", packet.id);
|
|
return;
|
|
}
|
|
packet.pending = true;
|
|
packet.tryCount++;
|
|
debug("sending packet [%d] (try n°%d)", packet.id, packet.tryCount);
|
|
this.flags = packet.flags;
|
|
this.emit.apply(this, packet.args);
|
|
}
|
|
/**
|
|
* Sends a packet.
|
|
*
|
|
* @param packet
|
|
* @private
|
|
*/
|
|
packet(packet) {
|
|
packet.nsp = this.nsp;
|
|
this.io._packet(packet);
|
|
}
|
|
/**
|
|
* Called upon engine `open`.
|
|
*
|
|
* @private
|
|
*/
|
|
onopen() {
|
|
debug("transport is open - connecting");
|
|
if (typeof this.auth == "function") {
|
|
this.auth((data) => {
|
|
this._sendConnectPacket(data);
|
|
});
|
|
}
|
|
else {
|
|
this._sendConnectPacket(this.auth);
|
|
}
|
|
}
|
|
/**
|
|
* Sends a CONNECT packet to initiate the Socket.IO session.
|
|
*
|
|
* @param data
|
|
* @private
|
|
*/
|
|
_sendConnectPacket(data) {
|
|
this.packet({
|
|
type: socket_io_parser_1.PacketType.CONNECT,
|
|
data: this._pid
|
|
? Object.assign({ pid: this._pid, offset: this._lastOffset }, data)
|
|
: data,
|
|
});
|
|
}
|
|
/**
|
|
* Called upon engine or manager `error`.
|
|
*
|
|
* @param err
|
|
* @private
|
|
*/
|
|
onerror(err) {
|
|
if (!this.connected) {
|
|
this.emitReserved("connect_error", err);
|
|
}
|
|
}
|
|
/**
|
|
* Called upon engine `close`.
|
|
*
|
|
* @param reason
|
|
* @param description
|
|
* @private
|
|
*/
|
|
onclose(reason, description) {
|
|
debug("close (%s)", reason);
|
|
this.connected = false;
|
|
delete this.id;
|
|
this.emitReserved("disconnect", reason, description);
|
|
}
|
|
/**
|
|
* Called with socket packet.
|
|
*
|
|
* @param packet
|
|
* @private
|
|
*/
|
|
onpacket(packet) {
|
|
const sameNamespace = packet.nsp === this.nsp;
|
|
if (!sameNamespace)
|
|
return;
|
|
switch (packet.type) {
|
|
case socket_io_parser_1.PacketType.CONNECT:
|
|
if (packet.data && packet.data.sid) {
|
|
this.onconnect(packet.data.sid, packet.data.pid);
|
|
}
|
|
else {
|
|
this.emitReserved("connect_error", new Error("It seems you are trying to reach a Socket.IO server in v2.x with a v3.x client, but they are not compatible (more information here: https://socket.io/docs/v3/migrating-from-2-x-to-3-0/)"));
|
|
}
|
|
break;
|
|
case socket_io_parser_1.PacketType.EVENT:
|
|
case socket_io_parser_1.PacketType.BINARY_EVENT:
|
|
this.onevent(packet);
|
|
break;
|
|
case socket_io_parser_1.PacketType.ACK:
|
|
case socket_io_parser_1.PacketType.BINARY_ACK:
|
|
this.onack(packet);
|
|
break;
|
|
case socket_io_parser_1.PacketType.DISCONNECT:
|
|
this.ondisconnect();
|
|
break;
|
|
case socket_io_parser_1.PacketType.CONNECT_ERROR:
|
|
this.destroy();
|
|
const err = new Error(packet.data.message);
|
|
// @ts-ignore
|
|
err.data = packet.data.data;
|
|
this.emitReserved("connect_error", err);
|
|
break;
|
|
}
|
|
}
|
|
/**
|
|
* Called upon a server event.
|
|
*
|
|
* @param packet
|
|
* @private
|
|
*/
|
|
onevent(packet) {
|
|
const args = packet.data || [];
|
|
debug("emitting event %j", args);
|
|
if (null != packet.id) {
|
|
debug("attaching ack callback to event");
|
|
args.push(this.ack(packet.id));
|
|
}
|
|
if (this.connected) {
|
|
this.emitEvent(args);
|
|
}
|
|
else {
|
|
this.receiveBuffer.push(Object.freeze(args));
|
|
}
|
|
}
|
|
emitEvent(args) {
|
|
if (this._anyListeners && this._anyListeners.length) {
|
|
const listeners = this._anyListeners.slice();
|
|
for (const listener of listeners) {
|
|
listener.apply(this, args);
|
|
}
|
|
}
|
|
super.emit.apply(this, args);
|
|
if (this._pid && args.length && typeof args[args.length - 1] === "string") {
|
|
this._lastOffset = args[args.length - 1];
|
|
}
|
|
}
|
|
/**
|
|
* Produces an ack callback to emit with an event.
|
|
*
|
|
* @private
|
|
*/
|
|
ack(id) {
|
|
const self = this;
|
|
let sent = false;
|
|
return function (...args) {
|
|
// prevent double callbacks
|
|
if (sent)
|
|
return;
|
|
sent = true;
|
|
debug("sending ack %j", args);
|
|
self.packet({
|
|
type: socket_io_parser_1.PacketType.ACK,
|
|
id: id,
|
|
data: args,
|
|
});
|
|
};
|
|
}
|
|
/**
|
|
* Called upon a server acknowlegement.
|
|
*
|
|
* @param packet
|
|
* @private
|
|
*/
|
|
onack(packet) {
|
|
const ack = this.acks[packet.id];
|
|
if ("function" === typeof ack) {
|
|
debug("calling ack %s with %j", packet.id, packet.data);
|
|
ack.apply(this, packet.data);
|
|
delete this.acks[packet.id];
|
|
}
|
|
else {
|
|
debug("bad ack %s", packet.id);
|
|
}
|
|
}
|
|
/**
|
|
* Called upon server connect.
|
|
*
|
|
* @private
|
|
*/
|
|
onconnect(id, pid) {
|
|
debug("socket connected with id %s", id);
|
|
this.id = id;
|
|
this.recovered = pid && this._pid === pid;
|
|
this._pid = pid; // defined only if connection state recovery is enabled
|
|
this.connected = true;
|
|
this.emitBuffered();
|
|
this.emitReserved("connect");
|
|
this._drainQueue(true);
|
|
}
|
|
/**
|
|
* Emit buffered events (received and emitted).
|
|
*
|
|
* @private
|
|
*/
|
|
emitBuffered() {
|
|
this.receiveBuffer.forEach((args) => this.emitEvent(args));
|
|
this.receiveBuffer = [];
|
|
this.sendBuffer.forEach((packet) => {
|
|
this.notifyOutgoingListeners(packet);
|
|
this.packet(packet);
|
|
});
|
|
this.sendBuffer = [];
|
|
}
|
|
/**
|
|
* Called upon server disconnect.
|
|
*
|
|
* @private
|
|
*/
|
|
ondisconnect() {
|
|
debug("server disconnect (%s)", this.nsp);
|
|
this.destroy();
|
|
this.onclose("io server disconnect");
|
|
}
|
|
/**
|
|
* Called upon forced client/server side disconnections,
|
|
* this method ensures the manager stops tracking us and
|
|
* that reconnections don't get triggered for this.
|
|
*
|
|
* @private
|
|
*/
|
|
destroy() {
|
|
if (this.subs) {
|
|
// clean subscriptions to avoid reconnections
|
|
this.subs.forEach((subDestroy) => subDestroy());
|
|
this.subs = undefined;
|
|
}
|
|
this.io["_destroy"](this);
|
|
}
|
|
/**
|
|
* Disconnects the socket manually. In that case, the socket will not try to reconnect.
|
|
*
|
|
* If this is the last active Socket instance of the {@link Manager}, the low-level connection will be closed.
|
|
*
|
|
* @example
|
|
* const socket = io();
|
|
*
|
|
* socket.on("disconnect", (reason) => {
|
|
* // console.log(reason); prints "io client disconnect"
|
|
* });
|
|
*
|
|
* socket.disconnect();
|
|
*
|
|
* @return self
|
|
*/
|
|
disconnect() {
|
|
if (this.connected) {
|
|
debug("performing disconnect (%s)", this.nsp);
|
|
this.packet({ type: socket_io_parser_1.PacketType.DISCONNECT });
|
|
}
|
|
// remove socket from pool
|
|
this.destroy();
|
|
if (this.connected) {
|
|
// fire events
|
|
this.onclose("io client disconnect");
|
|
}
|
|
return this;
|
|
}
|
|
/**
|
|
* Alias for {@link disconnect()}.
|
|
*
|
|
* @return self
|
|
*/
|
|
close() {
|
|
return this.disconnect();
|
|
}
|
|
/**
|
|
* Sets the compress flag.
|
|
*
|
|
* @example
|
|
* socket.compress(false).emit("hello");
|
|
*
|
|
* @param compress - if `true`, compresses the sending data
|
|
* @return self
|
|
*/
|
|
compress(compress) {
|
|
this.flags.compress = compress;
|
|
return this;
|
|
}
|
|
/**
|
|
* Sets a modifier for a subsequent event emission that the event message will be dropped when this socket is not
|
|
* ready to send messages.
|
|
*
|
|
* @example
|
|
* socket.volatile.emit("hello"); // the server may or may not receive it
|
|
*
|
|
* @returns self
|
|
*/
|
|
get volatile() {
|
|
this.flags.volatile = true;
|
|
return this;
|
|
}
|
|
/**
|
|
* Sets a modifier for a subsequent event emission that the callback will be called with an error when the
|
|
* given number of milliseconds have elapsed without an acknowledgement from the server:
|
|
*
|
|
* @example
|
|
* socket.timeout(5000).emit("my-event", (err) => {
|
|
* if (err) {
|
|
* // the server did not acknowledge the event in the given delay
|
|
* }
|
|
* });
|
|
*
|
|
* @returns self
|
|
*/
|
|
timeout(timeout) {
|
|
this.flags.timeout = timeout;
|
|
return this;
|
|
}
|
|
/**
|
|
* Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
|
|
* callback.
|
|
*
|
|
* @example
|
|
* socket.onAny((event, ...args) => {
|
|
* console.log(`got ${event}`);
|
|
* });
|
|
*
|
|
* @param listener
|
|
*/
|
|
onAny(listener) {
|
|
this._anyListeners = this._anyListeners || [];
|
|
this._anyListeners.push(listener);
|
|
return this;
|
|
}
|
|
/**
|
|
* Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
|
|
* callback. The listener is added to the beginning of the listeners array.
|
|
*
|
|
* @example
|
|
* socket.prependAny((event, ...args) => {
|
|
* console.log(`got event ${event}`);
|
|
* });
|
|
*
|
|
* @param listener
|
|
*/
|
|
prependAny(listener) {
|
|
this._anyListeners = this._anyListeners || [];
|
|
this._anyListeners.unshift(listener);
|
|
return this;
|
|
}
|
|
/**
|
|
* Removes the listener that will be fired when any event is emitted.
|
|
*
|
|
* @example
|
|
* const catchAllListener = (event, ...args) => {
|
|
* console.log(`got event ${event}`);
|
|
* }
|
|
*
|
|
* socket.onAny(catchAllListener);
|
|
*
|
|
* // remove a specific listener
|
|
* socket.offAny(catchAllListener);
|
|
*
|
|
* // or remove all listeners
|
|
* socket.offAny();
|
|
*
|
|
* @param listener
|
|
*/
|
|
offAny(listener) {
|
|
if (!this._anyListeners) {
|
|
return this;
|
|
}
|
|
if (listener) {
|
|
const listeners = this._anyListeners;
|
|
for (let i = 0; i < listeners.length; i++) {
|
|
if (listener === listeners[i]) {
|
|
listeners.splice(i, 1);
|
|
return this;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
this._anyListeners = [];
|
|
}
|
|
return this;
|
|
}
|
|
/**
|
|
* Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
|
|
* e.g. to remove listeners.
|
|
*/
|
|
listenersAny() {
|
|
return this._anyListeners || [];
|
|
}
|
|
/**
|
|
* Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
|
|
* callback.
|
|
*
|
|
* Note: acknowledgements sent to the server are not included.
|
|
*
|
|
* @example
|
|
* socket.onAnyOutgoing((event, ...args) => {
|
|
* console.log(`sent event ${event}`);
|
|
* });
|
|
*
|
|
* @param listener
|
|
*/
|
|
onAnyOutgoing(listener) {
|
|
this._anyOutgoingListeners = this._anyOutgoingListeners || [];
|
|
this._anyOutgoingListeners.push(listener);
|
|
return this;
|
|
}
|
|
/**
|
|
* Adds a listener that will be fired when any event is emitted. The event name is passed as the first argument to the
|
|
* callback. The listener is added to the beginning of the listeners array.
|
|
*
|
|
* Note: acknowledgements sent to the server are not included.
|
|
*
|
|
* @example
|
|
* socket.prependAnyOutgoing((event, ...args) => {
|
|
* console.log(`sent event ${event}`);
|
|
* });
|
|
*
|
|
* @param listener
|
|
*/
|
|
prependAnyOutgoing(listener) {
|
|
this._anyOutgoingListeners = this._anyOutgoingListeners || [];
|
|
this._anyOutgoingListeners.unshift(listener);
|
|
return this;
|
|
}
|
|
/**
|
|
* Removes the listener that will be fired when any event is emitted.
|
|
*
|
|
* @example
|
|
* const catchAllListener = (event, ...args) => {
|
|
* console.log(`sent event ${event}`);
|
|
* }
|
|
*
|
|
* socket.onAnyOutgoing(catchAllListener);
|
|
*
|
|
* // remove a specific listener
|
|
* socket.offAnyOutgoing(catchAllListener);
|
|
*
|
|
* // or remove all listeners
|
|
* socket.offAnyOutgoing();
|
|
*
|
|
* @param [listener] - the catch-all listener (optional)
|
|
*/
|
|
offAnyOutgoing(listener) {
|
|
if (!this._anyOutgoingListeners) {
|
|
return this;
|
|
}
|
|
if (listener) {
|
|
const listeners = this._anyOutgoingListeners;
|
|
for (let i = 0; i < listeners.length; i++) {
|
|
if (listener === listeners[i]) {
|
|
listeners.splice(i, 1);
|
|
return this;
|
|
}
|
|
}
|
|
}
|
|
else {
|
|
this._anyOutgoingListeners = [];
|
|
}
|
|
return this;
|
|
}
|
|
/**
|
|
* Returns an array of listeners that are listening for any event that is specified. This array can be manipulated,
|
|
* e.g. to remove listeners.
|
|
*/
|
|
listenersAnyOutgoing() {
|
|
return this._anyOutgoingListeners || [];
|
|
}
|
|
/**
|
|
* Notify the listeners for each packet sent
|
|
*
|
|
* @param packet
|
|
*
|
|
* @private
|
|
*/
|
|
notifyOutgoingListeners(packet) {
|
|
if (this._anyOutgoingListeners && this._anyOutgoingListeners.length) {
|
|
const listeners = this._anyOutgoingListeners.slice();
|
|
for (const listener of listeners) {
|
|
listener.apply(this, packet.data);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
exports.Socket = Socket;
|