From 75c023d70d5677e935155783cf7d9db51bfca5fa Mon Sep 17 00:00:00 2001 From: Naseem <24660299+naseemkullah@users.noreply.github.com> Date: Thu, 25 Nov 2021 15:04:00 -0500 Subject: [PATCH 1/3] docs: format readme --- README.md | 436 +++++++++++++++++++++++++++--------------------------- 1 file changed, 222 insertions(+), 214 deletions(-) diff --git a/README.md b/README.md index 163077f94..6ff6a6a3b 100644 --- a/README.md +++ b/README.md @@ -1,4 +1,3 @@ - # Engine.IO: the realtime engine [![Build Status](https://github.com/socketio/engine.io/workflows/CI/badge.svg?branch=master)](https://github.com/socketio/engine.io/actions) @@ -15,11 +14,11 @@ cross-browser/cross-device bi-directional communication layer for #### (A) Listening on a port ```js -const engine = require('engine.io'); +const engine = require("engine.io"); const server = engine.listen(80); -server.on('connection', socket => { - socket.send('utf 8 string'); +server.on("connection", (socket) => { + socket.send("utf 8 string"); socket.send(Buffer.from([0, 1, 2, 3, 4, 5])); // binary data }); ``` @@ -27,32 +26,34 @@ server.on('connection', socket => { #### (B) Intercepting requests for a http.Server ```js -const engine = require('engine.io'); -const http = require('http').createServer().listen(3000); +const engine = require("engine.io"); +const http = require("http") + .createServer() + .listen(3000); const server = engine.attach(http); -server.on('connection', socket => { - socket.on('message', data => { }); - socket.on('close', () => { }); +server.on("connection", (socket) => { + socket.on("message", (data) => {}); + socket.on("close", () => {}); }); ``` #### (C) Passing in requests ```js -const engine = require('engine.io'); +const engine = require("engine.io"); const server = new engine.Server(); -server.on('connection', socket => { - socket.send('hi'); +server.on("connection", (socket) => { + socket.send("hi"); }); // … -httpServer.on('upgrade', (req, socket, head) => { +httpServer.on("upgrade", (req, socket, head) => { server.handleUpgrade(req, socket, head); }); -httpServer.on('request', (req, res) => { +httpServer.on("request", (req, res) => { server.handleRequest(req, res); }); ``` @@ -62,10 +63,10 @@ httpServer.on('request', (req, res) => { ```html ``` @@ -102,14 +103,14 @@ These are exposed by `require('engine.io')`: ##### Events - `flush` - - Called when a socket buffer is being flushed. - - **Arguments** - - `Socket`: socket being flushed - - `Array`: write buffer + - Called when a socket buffer is being flushed. + - **Arguments** + - `Socket`: socket being flushed + - `Array`: write buffer - `drain` - - Called when a socket buffer is drained - - **Arguments** - - `Socket`: socket being flushed + - Called when a socket buffer is drained + - **Arguments** + - `Socket`: socket being flushed ##### Properties @@ -122,12 +123,13 @@ These are exposed by `require('engine.io')`: ##### Methods - `()` - - Returns a new `Server` instance. If the first argument is an `http.Server` then the - new `Server` instance will be attached to it. Otherwise, the arguments are passed - directly to the `Server` constructor. - - **Parameters** - - `http.Server`: optional, server to attach to. - - `Object`: optional, options object (see `Server#constructor` api docs below) + + - Returns a new `Server` instance. If the first argument is an `http.Server` then the + new `Server` instance will be attached to it. Otherwise, the arguments are passed + directly to the `Server` constructor. + - **Parameters** + - `http.Server`: optional, server to attach to. + - `Object`: optional, options object (see `Server#constructor` api docs below) The following are identical ways to instantiate a server and then attach it. @@ -152,46 +154,48 @@ const eioServer = require('engine.io')(httpServer, { ``` - `listen` - - Creates an `http.Server` which listens on the given port and attaches WS - to it. It returns `501 Not Implemented` for regular http requests. - - **Parameters** - - `Number`: port to listen on. - - `Object`: optional, options object - - `Function`: callback for `listen`. - - **Options** - - All options from `Server.attach` method, documented below. - - **Additionally** See Server `constructor` below for options you can pass for creating the new Server - - **Returns** `Server` + - Creates an `http.Server` which listens on the given port and attaches WS + to it. It returns `501 Not Implemented` for regular http requests. + - **Parameters** + - `Number`: port to listen on. + - `Object`: optional, options object + - `Function`: callback for `listen`. + - **Options** + - All options from `Server.attach` method, documented below. + - **Additionally** See Server `constructor` below for options you can pass for creating the new Server + - **Returns** `Server` ```js -const engine = require('engine.io'); +const engine = require("engine.io"); const server = engine.listen(3000, { pingTimeout: 2000, - pingInterval: 10000 + pingInterval: 10000, }); -server.on('connection', /* ... */); +server.on("connection" /* ... */); ``` - `attach` - - Captures `upgrade` requests for a `http.Server`. In other words, makes - a regular http.Server WebSocket-compatible. - - **Parameters** - - `http.Server`: server to attach to. - - `Object`: optional, options object - - **Options** - - All options from `Server.attach` method, documented below. - - **Additionally** See Server `constructor` below for options you can pass for creating the new Server - - **Returns** `Server` a new Server instance. + - Captures `upgrade` requests for a `http.Server`. In other words, makes + a regular http.Server WebSocket-compatible. + - **Parameters** + - `http.Server`: server to attach to. + - `Object`: optional, options object + - **Options** + - All options from `Server.attach` method, documented below. + - **Additionally** See Server `constructor` below for options you can pass for creating the new Server + - **Returns** `Server` a new Server instance. ```js -const engine = require('engine.io'); -const httpServer = require('http').createServer().listen(3000); +const engine = require("engine.io"); +const httpServer = require("http") + .createServer() + .listen(3000); const server = engine.attach(httpServer, { - wsEngine: require('eiows').Server // requires having eiows as dependency + wsEngine: require("eiows").Server, // requires having eiows as dependency }); -server.on('connection', /* ... */); +server.on("connection" /* ... */); ``` #### Server @@ -201,40 +205,42 @@ The main server/manager. _Inherits from EventEmitter_. ##### Events - `connection` - - Fired when a new connection is established. - - **Arguments** - - `Socket`: a Socket object + + - Fired when a new connection is established. + - **Arguments** + - `Socket`: a Socket object - `initial_headers` - - Fired on the first request of the connection, before writing the response headers - - **Arguments** - - `headers` (`Object`): a hash of headers - - `req` (`http.IncomingMessage`): the request + + - Fired on the first request of the connection, before writing the response headers + - **Arguments** + - `headers` (`Object`): a hash of headers + - `req` (`http.IncomingMessage`): the request - `headers` - - Fired on the all requests of the connection, before writing the response headers - - **Arguments** - - `headers` (`Object`): a hash of headers - - `req` (`http.IncomingMessage`): the request -- `connection_error` - - Fired when an error occurs when establishing the connection. - - **Arguments** - - `error`: an object with following properties: - - `req` (`http.IncomingMessage`): the request that was dropped - - `code` (`Number`): one of `Server.errors` - - `message` (`string`): one of `Server.errorMessages` - - `context` (`Object`): extra info about the error - -| Code | Message | -| ---- | ------- | -| 0 | "Transport unknown" -| 1 | "Session ID unknown" -| 2 | "Bad handshake method" -| 3 | "Bad request" -| 4 | "Forbidden" -| 5 | "Unsupported protocol version" + - Fired on the all requests of the connection, before writing the response headers + - **Arguments** + - `headers` (`Object`): a hash of headers + - `req` (`http.IncomingMessage`): the request +- `connection_error` + - Fired when an error occurs when establishing the connection. + - **Arguments** + - `error`: an object with following properties: + - `req` (`http.IncomingMessage`): the request that was dropped + - `code` (`Number`): one of `Server.errors` + - `message` (`string`): one of `Server.errorMessages` + - `context` (`Object`): extra info about the error + +| Code | Message | +| ---- | ------------------------------ | +| 0 | "Transport unknown" | +| 1 | "Session ID unknown" | +| 2 | "Bad handshake method" | +| 3 | "Bad request" | +| 4 | "Forbidden" | +| 5 | "Unsupported protocol version" | ##### Properties @@ -248,74 +254,74 @@ to a single process. ##### Methods - **constructor** - - Initializes the server - - **Parameters** - - `Object`: optional, options object - - **Options** - - `pingTimeout` (`Number`): how many ms without a pong packet to - consider the connection closed (`20000`) - - `pingInterval` (`Number`): how many ms before sending a new ping - packet (`25000`) - - `upgradeTimeout` (`Number`): how many ms before an uncompleted transport upgrade is cancelled (`10000`) - - `maxHttpBufferSize` (`Number`): how many bytes or characters a message - can be, before closing the session (to avoid DoS). Default - value is `1E6`. - - `allowRequest` (`Function`): A function that receives a given handshake - or upgrade request as its first parameter, and can decide whether to - continue or not. The second argument is a function that needs to be - called with the decided information: `fn(err, success)`, where - `success` is a boolean value where false means that the request is - rejected, and err is an error code. - - `transports` (` String`): transports to allow connections - to (`['polling', 'websocket']`) - - `allowUpgrades` (`Boolean`): whether to allow transport upgrades - (`true`) - - `perMessageDeflate` (`Object|Boolean`): parameters of the WebSocket permessage-deflate extension - (see [ws module](https://github.com/einaros/ws) api docs). Set to `true` to enable. (defaults to `false`) - - `threshold` (`Number`): data is compressed only if the byte size is above this value (`1024`) - - `httpCompression` (`Object|Boolean`): parameters of the http compression for the polling transports - (see [zlib](http://nodejs.org/api/zlib.html#zlib_options) api docs). Set to `false` to disable. (`true`) - - `threshold` (`Number`): data is compressed only if the byte size is above this value (`1024`) - - `cookie` (`Object|Boolean`): configuration of the cookie that - contains the client sid to send as part of handshake response - headers. This cookie might be used for sticky-session. Defaults to not sending any cookie (`false`). - See [here](https://github.com/jshttp/cookie#options-1) for all supported options. - - `wsEngine` (`Function`): what WebSocket server implementation to use. Specified module must conform to the `ws` interface (see [ws module api docs](https://github.com/websockets/ws/blob/master/doc/ws.md)). Default value is `ws`. An alternative c++ addon is also available by installing `eiows` module. - - `cors` (`Object`): the options that will be forwarded to the cors module. See [there](https://github.com/expressjs/cors#configuration-options) for all available options. Defaults to no CORS allowed. - - `initialPacket` (`Object`): an optional packet which will be concatenated to the handshake packet emitted by Engine.IO. - - `allowEIO3` (`Boolean`): whether to support v3 Engine.IO clients (defaults to `false`) + - Initializes the server + - **Parameters** + - `Object`: optional, options object + - **Options** + - `pingTimeout` (`Number`): how many ms without a pong packet to + consider the connection closed (`20000`) + - `pingInterval` (`Number`): how many ms before sending a new ping + packet (`25000`) + - `upgradeTimeout` (`Number`): how many ms before an uncompleted transport upgrade is cancelled (`10000`) + - `maxHttpBufferSize` (`Number`): how many bytes or characters a message + can be, before closing the session (to avoid DoS). Default + value is `1E6`. + - `allowRequest` (`Function`): A function that receives a given handshake + or upgrade request as its first parameter, and can decide whether to + continue or not. The second argument is a function that needs to be + called with the decided information: `fn(err, success)`, where + `success` is a boolean value where false means that the request is + rejected, and err is an error code. + - `transports` (` String`): transports to allow connections + to (`['polling', 'websocket']`) + - `allowUpgrades` (`Boolean`): whether to allow transport upgrades + (`true`) + - `perMessageDeflate` (`Object|Boolean`): parameters of the WebSocket permessage-deflate extension + (see [ws module](https://github.com/einaros/ws) api docs). Set to `true` to enable. (defaults to `false`) + - `threshold` (`Number`): data is compressed only if the byte size is above this value (`1024`) + - `httpCompression` (`Object|Boolean`): parameters of the http compression for the polling transports + (see [zlib](http://nodejs.org/api/zlib.html#zlib_options) api docs). Set to `false` to disable. (`true`) + - `threshold` (`Number`): data is compressed only if the byte size is above this value (`1024`) + - `cookie` (`Object|Boolean`): configuration of the cookie that + contains the client sid to send as part of handshake response + headers. This cookie might be used for sticky-session. Defaults to not sending any cookie (`false`). + See [here](https://github.com/jshttp/cookie#options-1) for all supported options. + - `wsEngine` (`Function`): what WebSocket server implementation to use. Specified module must conform to the `ws` interface (see [ws module api docs](https://github.com/websockets/ws/blob/master/doc/ws.md)). Default value is `ws`. An alternative c++ addon is also available by installing `eiows` module. + - `cors` (`Object`): the options that will be forwarded to the cors module. See [there](https://github.com/expressjs/cors#configuration-options) for all available options. Defaults to no CORS allowed. + - `initialPacket` (`Object`): an optional packet which will be concatenated to the handshake packet emitted by Engine.IO. + - `allowEIO3` (`Boolean`): whether to support v3 Engine.IO clients (defaults to `false`) - `close` - - Closes all clients - - **Returns** `Server` for chaining + - Closes all clients + - **Returns** `Server` for chaining - `handleRequest` - - Called internally when a `Engine` request is intercepted. - - **Parameters** - - `http.IncomingMessage`: a node request object - - `http.ServerResponse`: a node response object - - **Returns** `Server` for chaining + - Called internally when a `Engine` request is intercepted. + - **Parameters** + - `http.IncomingMessage`: a node request object + - `http.ServerResponse`: a node response object + - **Returns** `Server` for chaining - `handleUpgrade` - - Called internally when a `Engine` ws upgrade is intercepted. - - **Parameters** (same as `upgrade` event) - - `http.IncomingMessage`: a node request object - - `net.Stream`: TCP socket for the request - - `Buffer`: legacy tail bytes - - **Returns** `Server` for chaining + - Called internally when a `Engine` ws upgrade is intercepted. + - **Parameters** (same as `upgrade` event) + - `http.IncomingMessage`: a node request object + - `net.Stream`: TCP socket for the request + - `Buffer`: legacy tail bytes + - **Returns** `Server` for chaining - `attach` - - Attach this Server instance to an `http.Server` - - Captures `upgrade` requests for a `http.Server`. In other words, makes - a regular http.Server WebSocket-compatible. - - **Parameters** - - `http.Server`: server to attach to. - - `Object`: optional, options object - - **Options** - - `path` (`String`): name of the path to capture (`/engine.io`). - - `destroyUpgrade` (`Boolean`): destroy unhandled upgrade requests (`true`) - - `destroyUpgradeTimeout` (`Number`): milliseconds after which unhandled requests are ended (`1000`) + - Attach this Server instance to an `http.Server` + - Captures `upgrade` requests for a `http.Server`. In other words, makes + a regular http.Server WebSocket-compatible. + - **Parameters** + - `http.Server`: server to attach to. + - `Object`: optional, options object + - **Options** + - `path` (`String`): name of the path to capture (`/engine.io`). + - `destroyUpgrade` (`Boolean`): destroy unhandled upgrade requests (`true`) + - `destroyUpgradeTimeout` (`Number`): milliseconds after which unhandled requests are ended (`1000`) - `generateId` - - Generate a socket id. - - Overwrite this method to generate your custom socket id. - - **Parameters** - - `http.IncomingMessage`: a node request object + - Generate a socket id. + - Overwrite this method to generate your custom socket id. + - **Parameters** + - `http.IncomingMessage`: a node request object - **Returns** A socket id for connected client.

@@ -327,36 +333,36 @@ A representation of a client. _Inherits from EventEmitter_. ##### Events - `close` - - Fired when the client is disconnected. - - **Arguments** - - `String`: reason for closing - - `Object`: description object (optional) + - Fired when the client is disconnected. + - **Arguments** + - `String`: reason for closing + - `Object`: description object (optional) - `message` - - Fired when the client sends a message. - - **Arguments** - - `String` or `Buffer`: Unicode string or Buffer with binary contents + - Fired when the client sends a message. + - **Arguments** + - `String` or `Buffer`: Unicode string or Buffer with binary contents - `error` - - Fired when an error occurs. - - **Arguments** - - `Error`: error object + - Fired when an error occurs. + - **Arguments** + - `Error`: error object - `flush` - - Called when the write buffer is being flushed. - - **Arguments** - - `Array`: write buffer + - Called when the write buffer is being flushed. + - **Arguments** + - `Array`: write buffer - `drain` - - Called when the write buffer is drained + - Called when the write buffer is drained - `packet` - - Called when a socket received a packet (`message`, `ping`) - - **Arguments** - - `type`: packet type - - `data`: packet data (if type is message) + - Called when a socket received a packet (`message`, `ping`) + - **Arguments** + - `type`: packet type + - `data`: packet data (if type is message) - `packetCreate` - - Called before a socket sends a packet (`message`, `ping`) - - **Arguments** - - `type`: packet type - - `data`: packet data (if type is message) + - Called before a socket sends a packet (`message`, `ping`) + - **Arguments** + - `type`: packet type + - `data`: packet data (if type is message) - `heartbeat` - - Called when `ping` or `pong` packed is received (depends of client version) + - Called when `ping` or `pong` packed is received (depends of client version) ##### Properties @@ -370,18 +376,18 @@ A representation of a client. _Inherits from EventEmitter_. ##### Methods - `send`: - - Sends a message, performing `message = toString(arguments[0])` unless - sending binary data, which is sent as is. - - **Parameters** - - `String` | `Buffer` | `ArrayBuffer` | `ArrayBufferView`: a string or any object implementing `toString()`, with outgoing data, or a Buffer or ArrayBuffer with binary data. Also any ArrayBufferView can be sent as is. - - `Object`: optional, options object - - `Function`: optional, a callback executed when the message gets flushed out by the transport - - **Options** - - `compress` (`Boolean`): whether to compress sending data. This option might be ignored and forced to be `true` when using polling. (`true`) - - **Returns** `Socket` for chaining + - Sends a message, performing `message = toString(arguments[0])` unless + sending binary data, which is sent as is. + - **Parameters** + - `String` | `Buffer` | `ArrayBuffer` | `ArrayBufferView`: a string or any object implementing `toString()`, with outgoing data, or a Buffer or ArrayBuffer with binary data. Also any ArrayBufferView can be sent as is. + - `Object`: optional, options object + - `Function`: optional, a callback executed when the message gets flushed out by the transport + - **Options** + - `compress` (`Boolean`): whether to compress sending data. This option might be ignored and forced to be `true` when using polling. (`true`) + - **Returns** `Socket` for chaining - `close` - - Disconnects the client - - **Returns** `Socket` for chaining + - Disconnects the client + - **Returns** `Socket` for chaining ### Client @@ -417,9 +423,10 @@ DEBUG=engine* node myapp ## Support The support channels for `engine.io` are the same as `socket.io`: - - irc.freenode.net **#socket.io** - - [Google Groups](http://groups.google.com/group/socket_io) - - [Website](http://socket.io) + +- irc.freenode.net **#socket.io** +- [Google Groups](http://groups.google.com/group/socket_io) +- [Website](http://socket.io) ## Development @@ -463,48 +470,49 @@ the same solution. WebSocket based connections have two fundamental benefits: 1. **Better server performance** - - _A: Load balancers_
- Load balancing a long polling connection poses a serious architectural nightmare - since requests can come from any number of open sockets by the user agent, but - they all need to be routed to the process and computer that owns the `Engine` - connection. This negatively impacts RAM and CPU usage. - - _B: Network traffic_
- WebSocket is designed around the premise that each message frame has to be - surrounded by the least amount of data. In HTTP 1.1 transports, each message - frame is surrounded by HTTP headers and chunked encoding frames. If you try to - send the message _"Hello world"_ with xhr-polling, the message ultimately - becomes larger than if you were to send it with WebSocket. - - _C: Lightweight parser_
- As an effect of **B**, the server has to do a lot more work to parse the network - data and figure out the message when traditional HTTP requests are used - (as in long polling). This means that another advantage of WebSocket is - less server CPU usage. + +- _A: Load balancers_
+ Load balancing a long polling connection poses a serious architectural nightmare + since requests can come from any number of open sockets by the user agent, but + they all need to be routed to the process and computer that owns the `Engine` + connection. This negatively impacts RAM and CPU usage. +- _B: Network traffic_
+ WebSocket is designed around the premise that each message frame has to be + surrounded by the least amount of data. In HTTP 1.1 transports, each message + frame is surrounded by HTTP headers and chunked encoding frames. If you try to + send the message _"Hello world"_ with xhr-polling, the message ultimately + becomes larger than if you were to send it with WebSocket. +- _C: Lightweight parser_
+ As an effect of **B**, the server has to do a lot more work to parse the network + data and figure out the message when traditional HTTP requests are used + (as in long polling). This means that another advantage of WebSocket is + less server CPU usage. 2. **Better user experience** - Due to the reasons stated in point **1**, the most important effect of being able - to establish a WebSocket connection is raw data transfer speed, which translates - in _some_ cases in better user experience. + Due to the reasons stated in point **1**, the most important effect of being able + to establish a WebSocket connection is raw data transfer speed, which translates + in _some_ cases in better user experience. - Applications with heavy realtime interaction (such as games) will benefit greatly, - whereas applications like realtime chat (Gmail/Facebook), newsfeeds (Facebook) or - timelines (Twitter) will have negligible user experience improvements. + Applications with heavy realtime interaction (such as games) will benefit greatly, + whereas applications like realtime chat (Gmail/Facebook), newsfeeds (Facebook) or + timelines (Twitter) will have negligible user experience improvements. Having said this, attempting to establish a WebSocket connection directly so far has proven problematic: 1. **Proxies**
- Many corporate proxies block WebSocket traffic. + Many corporate proxies block WebSocket traffic. 2. **Personal firewall and antivirus software**
- As a result of our research, we've found that at least 3 personal security - applications block WebSocket traffic. + As a result of our research, we've found that at least 3 personal security + applications block WebSocket traffic. 3. **Cloud application platforms**
- Platforms like Heroku or No.de have had trouble keeping up with the fast-paced - nature of the evolution of the WebSocket protocol. Applications therefore end up - inevitably using long polling, but the seamless installation experience of - Socket.IO we strive for (_"require() it and it just works"_) disappears. + Platforms like Heroku or No.de have had trouble keeping up with the fast-paced + nature of the evolution of the WebSocket protocol. Applications therefore end up + inevitably using long polling, but the seamless installation experience of + Socket.IO we strive for (_"require() it and it just works"_) disappears. Some of these problems have solutions. In the case of proxies and personal programs, however, the solutions many times involve upgrading software. Experience has shown From 9a42664c05136d5aacc2f371cc79f44ccd21aa75 Mon Sep 17 00:00:00 2001 From: Naseem <24660299+naseemkullah@users.noreply.github.com> Date: Thu, 25 Nov 2021 15:06:41 -0500 Subject: [PATCH 2/3] update package-lock --- package-lock.json | 1977 ++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 1960 insertions(+), 17 deletions(-) diff --git a/package-lock.json b/package-lock.json index 07c3c5570..200ab44d9 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,8 +1,1948 @@ { "name": "engine.io", "version": "6.1.0", - "lockfileVersion": 1, + "lockfileVersion": 2, "requires": true, + "packages": { + "": { + "name": "engine.io", + "version": "6.1.0", + "license": "MIT", + "dependencies": { + "@types/cookie": "^0.4.1", + "@types/cors": "^2.8.12", + "@types/node": ">=10.0.0", + "accepts": "~1.3.4", + "base64id": "2.0.0", + "cookie": "~0.4.1", + "cors": "~2.8.5", + "debug": "~4.3.1", + "engine.io-parser": "~5.0.0", + "ws": "~8.2.3" + }, + "devDependencies": 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insertions(+), 6 deletions(-) diff --git a/lib/socket.ts b/lib/socket.ts index 6697ed45a..3d3f496e4 100644 --- a/lib/socket.ts +++ b/lib/socket.ts @@ -6,6 +6,14 @@ import { Server } from "./server"; const debug = debugModule("engine:socket"); +type PacketType = "error" | "message" | "open" | "ping" | "pong"; + +export interface Packet { + type: PacketType; + options: { compress: boolean }; + data?: any; +} + export class Socket extends EventEmitter { public readonly protocol: number; public readonly request: IncomingMessage; @@ -115,7 +123,7 @@ export class Socket extends EventEmitter { * @param {Object} packet * @api private */ - private onPacket(packet) { + private onPacket(packet: Packet) { if ("open" !== this.readyState) { return debug("packet received with closed socket"); } @@ -440,7 +448,7 @@ export class Socket extends EventEmitter { * @param {Object} options * @api private */ - private sendPacket(type, data?, options?, callback?) { + private sendPacket(type: PacketType, data?, options?, callback?) { if ("function" === typeof options) { callback = options; options = null; @@ -452,10 +460,11 @@ export class Socket extends EventEmitter { if ("closing" !== this.readyState && "closed" !== this.readyState) { debug('sending packet "%s" (%s)', type, data); - const packet: any = { - type: type, - options: options + const packet: Packet = { + type, + options }; + if (data) packet.data = data; // exports packetCreate event diff --git a/lib/transport.ts b/lib/transport.ts index 53d8ad023..9640a3578 100644 --- a/lib/transport.ts +++ b/lib/transport.ts @@ -3,6 +3,7 @@ import * as parser_v4 from "engine.io-parser"; import * as parser_v3 from "./parser-v3/index"; import debugModule from "debug"; import { IncomingMessage } from "http"; +import { Packet } from "./socket"; const debug = debugModule("engine:transport"); @@ -111,7 +112,7 @@ export abstract class Transport extends EventEmitter { * @param {Object} packet * @api protected */ - protected onPacket(packet) { + protected onPacket(packet: Packet) { this.emit("packet", packet); }