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Connection to hobu

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This commit is contained in:
Gerrit Linnemann 2017-05-12 22:32:18 +02:00
parent bfae25bd33
commit 143782ce4f
40 changed files with 4342 additions and 1392 deletions
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58
hobu_alert_system_control/app.js
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@ -2,17 +2,21 @@ var Tinkerforge = require('../Tinkerforge')
, Conf = require('./config.json')
, Helper = require('../Adawim/helper')
, Log = require('../Adawim/logging')
, http = require('http');
, http = require('http')
, WebSocket = require('ws');
var ws = null;
var lastTagID = '';
var timeOutForHoldingLastTagID = null;
const timeOutForHoldingLastTagIDInMillis = Conf.rfid.timeout;
var currentActionState = 0;
Helper.each(Conf.items, function(item) {
connect(item);
});
var lastTagID = '';
var timeOutForHoldingLastTagID = null;
const timeOutForHoldingLastTagIDInMillis = Conf.rfid.timeout;
var currentActionState = 0;
/* private */
function reconnect(item) {
@ -198,12 +202,56 @@ function doActionOnRFIDCallback(key) {
case 0:
// deactivate alarm system
Log.log( 'deactivate alarm system' );
deactivateAlarmSystem();
break;
case 1:
// activate alarm system
Log.log( 'activate alarm system' );
activateAlarmSystem();
break;
default:
// nothing to do
}
}
/* private */
function activateAlarmSystem() {
msg = '{type:"set_alarm_system_state", data:{state:"F111"}}';
send(msg);
}
/* private */
function deactivateAlarmSystem() {
msg = '{type:"set_alarm_system_state", data:{state:"F222"}}';
send(msg);
}
/* private */
function send(msg) {
if(Helper.isDefinedAndNotNull(ws) && Helper.isDefinedAndNotNull(msg)) {
ws.send(msg);
} else {
Log.error('ws is null');
}
}
var openWebSocket = function() {
ws = new WebSocket(Conf.hobu.url);
ws.on('open', function() {
Log.log('ws open');
ws.send(Date.now().toString(), {mask: true});
});
ws.on('close', function() {
Log.log('ws disconnect');
openWebSocket();
});
ws.on('message', function incoming(data, flags) {
// flags.binary will be set if a binary data is received.
// flags.masked will be set if the data was masked.
Log.inspect('data', data);
});
}
openWebSocket();

5
hobu_alert_system_control/config.json
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@ -1,10 +1,13 @@
{
"hobu": {
"url": "ws://hobu.local:8000/"
},
"rfid": {
"timeout": 10000
},
"items": [
{
"host": "localhost",
"host": "192.168.2.123",
"port": 4223,
"mtouch": {
"uid": "ADk"

22
node_modules/nodejs-websocket/.jshintrc generated vendored
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@ -1,22 +0,0 @@
{
"curly": true,
"eqeqeq": true,
"nonew": true,
"latedef": "nofunc",
"unused": true,
"noarg": true,
"asi": true,
"trailing": true,
"quotmark": true,
"strict": true,
"undef": true,
"expr": true,
"newcap": true,
"immed": true,
"node": true,
"camelcase": true,
"devel": true,
"freeze": true,
"-W033": true,
"-W058": true
}

3
node_modules/nodejs-websocket/.npmignore generated vendored
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@ -1,3 +0,0 @@
node_modules
test
samples

5
node_modules/nodejs-websocket/.travis.yml generated vendored
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@ -1,5 +0,0 @@
language: node_js
node_js:
- "0.12"
- "4.2.1"
- "node"

616
node_modules/nodejs-websocket/Connection.js generated vendored
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@ -1,616 +0,0 @@
/**
* @file Represents a connection (both client and server sides)
*/
'use strict'
var util = require('util'),
events = require('events'),
crypto = require('crypto'),
InStream = require('./InStream'),
OutStream = require('./OutStream'),
frame = require('./frame'),
Server = require('./Server')
/**
* @class
* @param {(net.Socket|tls.CleartextStream)} socket a net or tls socket
* @param {(Server|{path:string,host:string})} parentOrUrl parent in case of server-side connection, url object in case of client-side
* @param {Function} [callback] will be added as a listener to 'connect'
* @inherits EventEmitter
* @event close the numeric code and string reason will be passed
* @event error an error object is passed
* @event text a string is passed
* @event binary a inStream object is passed
* @event pong a string is passed
* @event connect
*/
function Connection(socket, parentOrUrl, callback) {
var that = this,
connectEvent
if (parentOrUrl instanceof Server) {
// Server-side connection
this.server = parentOrUrl
this.path = null
this.host = null
this.extraHeaders = null
} else {
// Client-side
this.server = null
this.path = parentOrUrl.path
this.host = parentOrUrl.host
this.extraHeaders = parentOrUrl.extraHeaders
}
this.socket = socket
this.readyState = this.CONNECTING
this.buffer = new Buffer(0)
this.frameBuffer = null // string for text frames and InStream for binary frames
this.outStream = null // current allocated OutStream object for sending binary frames
this.key = null // the Sec-WebSocket-Key header
this.headers = {} // read only map of header names and values. Header names are lower-cased
// Set listeners
socket.on('readable', function () {
that.doRead()
})
socket.on('error', function (err) {
that.emit('error', err)
})
if (!this.server) {
connectEvent = socket.constructor.name === 'CleartextStream' ? 'secureConnect' : 'connect'
socket.on(connectEvent, function () {
that.startHandshake()
})
}
// Close listeners
var onclose = function () {
if (that.readyState === that.CONNECTING || that.readyState === that.OPEN) {
that.emit('close', 1006, '')
}
that.readyState = this.CLOSED
if (that.frameBuffer instanceof InStream) {
that.frameBuffer.end()
that.frameBuffer = null
}
if (that.outStream instanceof OutStream) {
that.outStream.end()
that.outStream = null
}
}
socket.once('close', onclose)
socket.once('finish', onclose)
// super constructor
events.EventEmitter.call(this)
if (callback) {
this.once('connect', callback)
}
}
util.inherits(Connection, events.EventEmitter)
module.exports = Connection
/**
* Minimum size of a pack of binary data to send in a single frame
* @property {number} binaryFragmentation
*/
Connection.binaryFragmentation = 512 * 1024 // .5 MiB
/**
* The maximum size the internal Buffer can grow
* If at any time it stays bigger than this, the connection will be closed with code 1009
* This is a security measure, to avoid memory attacks
* @property {number} maxBufferLength
*/
Connection.maxBufferLength = 2 * 1024 * 1024 // 2 MiB
/**
* Possible ready states for the connection
* @constant {number} CONNECTING
* @constant {number} OPEN
* @constant {number} CLOSING
* @constant {number} CLOSED
*/
Connection.prototype.CONNECTING = 0
Connection.prototype.OPEN = 1
Connection.prototype.CLOSING = 2
Connection.prototype.CLOSED = 3
/**
* Send a given string to the other side
* @param {string} str
* @param {Function} [callback] will be executed when the data is finally written out
*/
Connection.prototype.sendText = function (str, callback) {
if (this.readyState === this.OPEN) {
if (!this.outStream) {
return this.socket.write(frame.createTextFrame(str, !this.server), callback)
}
this.emit('error', new Error('You can\'t send a text frame until you finish sending binary frames'))
}
this.emit('error', new Error('You can\'t write to a non-open connection'))
}
/**
* Request for a OutStream to send binary data
* @returns {OutStream}
*/
Connection.prototype.beginBinary = function () {
if (this.readyState === this.OPEN) {
if (!this.outStream) {
return (this.outStream = new OutStream(this, Connection.binaryFragmentation))
}
this.emit('error', new Error('You can\'t send more binary frames until you finish sending the previous binary frames'))
}
this.emit('error', new Error('You can\'t write to a non-open connection'))
}
/**
* Sends a binary buffer at once
* @param {Buffer} data
* @param {Function} [callback] will be executed when the data is finally written out
*/
Connection.prototype.sendBinary = function (data, callback) {
if (this.readyState === this.OPEN) {
if (!this.outStream) {
return this.socket.write(frame.createBinaryFrame(data, !this.server, true, true), callback)
}
this.emit('error', new Error('You can\'t send more binary frames until you finish sending the previous binary frames'))
}
this.emit('error', new Error('You can\'t write to a non-open connection'))
}
/**
* Sends a text or binary frame
* @param {string|Buffer} data
* @param {Function} [callback] will be executed when the data is finally written out
*/
Connection.prototype.send = function (data, callback) {
if (typeof data === 'string') {
this.sendText(data, callback)
} else if (Buffer.isBuffer(data)) {
this.sendBinary(data, callback)
} else {
throw new TypeError('data should be either a string or a Buffer instance')
}
}
/**
* Sends a ping to the remote
* @param {string} [data=''] - optional ping data
* @fires pong when pong reply is received
*/
Connection.prototype.sendPing = function (data) {
if (this.readyState === this.OPEN) {
return this.socket.write(frame.createPingFrame(data || '', !this.server))
}
this.emit('error', new Error('You can\'t write to a non-open connection'))
}
/**
* Close the connection, sending a close frame and waiting for response
* If the connection isn't OPEN, closes it without sending a close frame
* @param {number} [code]
* @param {string} [reason]
* @fires close
*/
Connection.prototype.close = function (code, reason) {
if (this.readyState === this.OPEN) {
this.socket.write(frame.createCloseFrame(code, reason, !this.server))
this.readyState = this.CLOSING
} else if (this.readyState !== this.CLOSED) {
this.socket.end()
this.readyState = this.CLOSED
}
this.emit('close', code, reason)
}
/**
* Reads contents from the socket and process it
* @fires connect
* @private
*/
Connection.prototype.doRead = function () {
var buffer, temp
// Fetches the data
buffer = this.socket.read()
if (!buffer) {
// Waits for more data
return
}
// Save to the internal buffer
this.buffer = Buffer.concat([this.buffer, buffer], this.buffer.length + buffer.length)
if (this.readyState === this.CONNECTING) {
if (!this.readHandshake()) {
// May have failed or we're waiting for more data
return
}
}
if (this.readyState !== this.CLOSED) {
// Try to read as many frames as possible
while ((temp = this.extractFrame()) === true) {}
if (temp === false) {
// Protocol error
this.close(1002)
} else if (this.buffer.length > Connection.maxBufferLength) {
// Frame too big
this.close(1009)
}
}
}
/**
* Create and send a handshake as a client
* @private
*/
Connection.prototype.startHandshake = function () {
var str, i, key, headers, header
key = new Buffer(16)
for (i = 0; i < 16; i++) {
key[i] = Math.floor(Math.random() * 256)
}
this.key = key.toString('base64')
headers = {
Host: this.host,
Upgrade: 'websocket',
Connection: 'Upgrade',
'Sec-WebSocket-Key': this.key,
'Sec-WebSocket-Version': '13'
}
for (header in this.extraHeaders) {
headers[header] = this.extraHeaders[header]
}
str = this.buildRequest('GET ' + this.path + ' HTTP/1.1', headers)
this.socket.write(str)
}
/**
* Try to read the handshake from the internal buffer
* If it succeeds, the handshake data is consumed from the internal buffer
* @returns {boolean} - whether the handshake was done
* @private
*/
Connection.prototype.readHandshake = function () {
var found = false,
i, data
// Do the handshake and try to connect
if (this.buffer.length > Connection.maxBufferLength) {
// Too big for a handshake
this.socket.end(this.server ? 'HTTP/1.1 400 Bad Request\r\n\r\n' : undefined)
return false
}
// Search for '\r\n\r\n'
for (i = 0; i < this.buffer.length - 3; i++) {
if (this.buffer[i] === 13 && this.buffer[i + 2] === 13 &&
this.buffer[i + 1] === 10 && this.buffer[i + 3] === 10) {
found = true
break
}
}
if (!found) {
// Wait for more data
return false
}
data = this.buffer.slice(0, i + 4).toString().split('\r\n')
if (this.server ? this.answerHandshake(data) : this.checkHandshake(data)) {
this.buffer = this.buffer.slice(i + 4)
this.readyState = this.OPEN
this.emit('connect')
return true
} else {
this.socket.end(this.server ? 'HTTP/1.1 400 Bad Request\r\n\r\n' : undefined)
return false
}
}
/**
* Read headers from HTTP protocol
* Update the Connection#headers property
* @param {string[]} lines one for each '\r\n'-separated HTTP request line
* @private
*/
Connection.prototype.readHeaders = function (lines) {
var i, match
// Extract all headers
// Ignore bad-formed lines and ignore the first line (HTTP header)
for (i = 1; i < lines.length; i++) {
if ((match = lines[i].match(/^([a-z-]+): (.+)$/i))) {
this.headers[match[1].toLowerCase()] = match[2]
}
}
}
/**
* Process and check a handshake answered by a server
* @param {string[]} lines one for each '\r\n'-separated HTTP request line
* @returns {boolean} if the handshake was sucessful. If not, the connection must be closed
* @private
*/
Connection.prototype.checkHandshake = function (lines) {
var key, sha1
// First line
if (lines.length < 4) {
return false
}
if (!lines[0].match(/^HTTP\/\d\.\d 101( .*)?$/i)) {
return false
}
// Extract all headers
this.readHeaders(lines)
// Validate necessary headers
if (!('upgrade' in this.headers) ||
!('sec-websocket-accept' in this.headers) ||
!('connection' in this.headers)) {
return false
}
if (this.headers.upgrade.toLowerCase() !== 'websocket' ||
this.headers.connection.toLowerCase().split(', ').indexOf('upgrade') === -1) {
return false
}
key = this.headers['sec-websocket-accept']
// Check the key
sha1 = crypto.createHash('sha1')
sha1.end(this.key + '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')
if (key !== sha1.read().toString('base64')) {
return false
}
return true
}
/**
* Process and answer a handshake started by a client
* @param {string[]} lines one for each '\r\n'-separated HTTP request line
* @returns {boolean} if the handshake was sucessful. If not, the connection must be closed with error 400-Bad Request
* @private
*/
Connection.prototype.answerHandshake = function (lines) {
var path, key, sha1
// First line
if (lines.length < 6) {
return false
}
path = lines[0].match(/^GET (.+) HTTP\/\d\.\d$/i)
if (!path) {
return false
}
this.path = path[1]
// Extract all headers
this.readHeaders(lines)
// Validate necessary headers
if (!('host' in this.headers) ||
!('sec-websocket-key' in this.headers) ||
!('upgrade' in this.headers) ||
!('connection' in this.headers)) {
return false
}
if (this.headers.upgrade.toLowerCase() !== 'websocket' ||
this.headers.connection.toLowerCase().split(', ').indexOf('upgrade') === -1) {
return false
}
if (this.headers['sec-websocket-version'] !== '13') {
return false
}
this.key = this.headers['sec-websocket-key']
// Build and send the response
sha1 = crypto.createHash('sha1')
sha1.end(this.key + '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')
key = sha1.read().toString('base64')
this.socket.write(this.buildRequest('HTTP/1.1 101 Switching Protocols', {
Upgrade: 'websocket',
Connection: 'Upgrade',
'Sec-WebSocket-Accept': key
}))
return true
}
/**
* Try to extract frame contents from the buffer (and execute it)
* @returns {(boolean|undefined)} false=something went wrong (the connection must be closed); undefined=there isn't enough data to catch a frame; true=the frame was successfully fetched and executed
* @private
*/
Connection.prototype.extractFrame = function () {
var fin, opcode, B, HB, mask, len, payload, start, i, hasMask
if (this.buffer.length < 2) {
return
}
// Is this the last frame in a sequence?
B = this.buffer[0]
HB = B >> 4
if (HB % 8) {
// RSV1, RSV2 and RSV3 must be clear
return false
}
fin = HB === 8
opcode = B % 16
if (opcode !== 0 && opcode !== 1 && opcode !== 2 &&
opcode !== 8 && opcode !== 9 && opcode !== 10) {
// Invalid opcode
return false
}
if (opcode >= 8 && !fin) {
// Control frames must not be fragmented
return false
}
B = this.buffer[1]
hasMask = B >> 7
if ((this.server && !hasMask) || (!this.server && hasMask)) {
// Frames sent by clients must be masked
return false
}
len = B % 128
start = hasMask ? 6 : 2
if (this.buffer.length < start + len) {
// Not enough data in the buffer
return
}
// Get the actual payload length
if (len === 126) {
len = this.buffer.readUInt16BE(2)
start += 2
} else if (len === 127) {
// Warning: JS can only store up to 2^53 in its number format
len = this.buffer.readUInt32BE(2) * Math.pow(2, 32) + this.buffer.readUInt32BE(6)
start += 8
}
if (this.buffer.length < start + len) {
return
}
// Extract the payload
payload = this.buffer.slice(start, start + len)
if (hasMask) {
// Decode with the given mask
mask = this.buffer.slice(start - 4, start)
for (i = 0; i < payload.length; i++) {
payload[i] ^= mask[i % 4]
}
}
this.buffer = this.buffer.slice(start + len)
// Proceeds to frame processing
return this.processFrame(fin, opcode, payload)
}
/**
* Process a given frame received
* @param {boolean} fin
* @param {number} opcode
* @param {Buffer} payload
* @returns {boolean} false if any error occurs, true otherwise
* @fires text
* @fires binary
* @private
*/
Connection.prototype.processFrame = function (fin, opcode, payload) {
if (opcode === 8) {
// Close frame
if (this.readyState === this.CLOSING) {
this.socket.end()
} else if (this.readyState === this.OPEN) {
this.processCloseFrame(payload)
}
return true
} else if (opcode === 9) {
// Ping frame
if (this.readyState === this.OPEN) {
this.socket.write(frame.createPongFrame(payload.toString(), !this.server))
}
return true
} else if (opcode === 10) {
// Pong frame
this.emit('pong', payload.toString())
return true
}
if (this.readyState !== this.OPEN) {
// Ignores if the connection isn't opened anymore
return true
}
if (opcode === 0 && this.frameBuffer === null) {
// Unexpected continuation frame
return false
} else if (opcode !== 0 && this.frameBuffer !== null) {
// Last sequence didn't finished correctly
return false
}
if (!opcode) {
// Get the current opcode for fragmented frames
opcode = typeof this.frameBuffer === 'string' ? 1 : 2
}
if (opcode === 1) {
// Save text frame
payload = payload.toString()
this.frameBuffer = this.frameBuffer ? this.frameBuffer + payload : payload
if (fin) {
// Emits 'text' event
this.emit('text', this.frameBuffer)
this.frameBuffer = null
}
} else {
// Sends the buffer for InStream object
if (!this.frameBuffer) {
// Emits the 'binary' event
this.frameBuffer = new InStream
this.emit('binary', this.frameBuffer)
}
this.frameBuffer.addData(payload)
if (fin) {
// Emits 'end' event
this.frameBuffer.end()
this.frameBuffer = null
}
}
return true
}
/**
* Process a close frame, emitting the close event and sending back the frame
* @param {Buffer} payload
* @fires close
* @private
*/
Connection.prototype.processCloseFrame = function (payload) {
var code, reason
if (payload.length >= 2) {
code = payload.readUInt16BE(0)
reason = payload.slice(2).toString()
} else {
code = 1005
reason = ''
}
this.socket.write(frame.createCloseFrame(code, reason, !this.server))
this.readyState = this.CLOSED
this.emit('close', code, reason)
}
/**
* Build the header string
* @param {string} requestLine
* @param {Object<string>} headers
* @returns {string}
* @private
*/
Connection.prototype.buildRequest = function (requestLine, headers) {
var headerString = requestLine + '\r\n',
headerName
for (headerName in headers) {
headerString += headerName + ': ' + headers[headerName] + '\r\n'
}
return headerString + '\r\n'
}

16
node_modules/nodejs-websocket/HISTORY.md generated vendored
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@ -1,16 +0,0 @@
# 1.6.0
* Added: `Server#close` as a short hand for `Server#socket.close`
# 1.5.0
* Added: `Connection#send` as a short hand for `Connection#sendText` or `Connection#sendBinary`, depending on the data type (string or Buffer)
# 1.4.1
* Added: example to README
# 1.4.0
* Added: `extraHeaders` option in `ws.connect(URL, [options], [callback])` to let one add custom headers to the HTTP handshake request
# 1.3.0
* Added: `Connection#sendPing([data=''])`
* Added: `pong(data)` event

44
node_modules/nodejs-websocket/InStream.js generated vendored
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@ -1,44 +0,0 @@
/**
* @file Simple wrapper for stream.Readable, used for receiving binary data
*/
'use strict'
var util = require('util'),
stream = require('stream')
/**
* Represents the readable stream for binary frames
* @class
* @event readable
* @event end
*/
function InStream() {
stream.Readable.call(this)
}
module.exports = InStream
util.inherits(InStream, stream.Readable)
/**
* No logic here, the pushs are made outside _read
* @private
*/
InStream.prototype._read = function () {}
/**
* Add more data to the stream and fires "readable" event
* @param {Buffer} data
* @private
*/
InStream.prototype.addData = function (data) {
this.push(data)
}
/**
* Indicates there is no more data to add to the stream
* @private
*/
InStream.prototype.end = function () {
this.push(null)
}

59
node_modules/nodejs-websocket/OutStream.js generated vendored
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@ -1,59 +0,0 @@
/**
* @file Simple wrapper for stream.Writable, used for sending binary data
*/
'use strict'
var util = require('util'),
stream = require('stream'),
frame = require('./frame')
/**
* @class Represents the writable stream for binary frames
* @param {Connection} connection
* @param {number} minSize
*/
function OutStream(connection, minSize) {
var that = this
this.connection = connection
this.minSize = minSize
this.buffer = new Buffer(0)
this.hasSent = false // Indicates if any frame has been sent yet
stream.Writable.call(this)
this.on('finish', function () {
if (that.connection.readyState === that.connection.OPEN) {
// Ignore if not connected anymore
that.connection.socket.write(frame.createBinaryFrame(that.buffer, !that.connection.server, !that.hasSent, true))
}
that.connection.outStream = null
})
}
module.exports = OutStream
util.inherits(OutStream, stream.Writable)
/**
* @param {Buffer} chunk
* @param {string} encoding
* @param {Function} callback
* @private
*/
OutStream.prototype._write = function (chunk, encoding, callback) {
var frameBuffer
this.buffer = Buffer.concat([this.buffer, chunk], this.buffer.length + chunk.length)
if (this.buffer.length >= this.minSize) {
if (this.connection.readyState === this.connection.OPEN) {
// Ignore if not connected anymore
frameBuffer = frame.createBinaryFrame(this.buffer, !this.connection.server, !this.hasSent, false)
this.connection.socket.write(frameBuffer, encoding, callback)
}
this.buffer = new Buffer(0)
this.hasSent = true
if (this.connection.readyState !== this.connection.OPEN) {
callback()
}
} else {
callback()
}
}

192
node_modules/nodejs-websocket/README.md generated vendored
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@ -1,192 +0,0 @@
# Nodejs Websocket
[![Build Status](https://travis-ci.org/sitegui/nodejs-websocket.svg?branch=master)](https://travis-ci.org/sitegui/nodejs-websocket)
[![Inline docs](https://inch-ci.org/github/sitegui/nodejs-websocket.svg?branch=master)](https://inch-ci.org/github/sitegui/nodejs-websocket)
[![Dependency Status](https://david-dm.org/sitegui/nodejs-websocket.svg)](https://david-dm.org/sitegui/nodejs-websocket)
A nodejs module for websocket server and client
# How to use it
Install with `npm install nodejs-websocket` or put all files in a folder called "nodejs-websocket", and:
```javascript
var ws = require("nodejs-websocket")
// Scream server example: "hi" -> "HI!!!"
var server = ws.createServer(function (conn) {
console.log("New connection")
conn.on("text", function (str) {
console.log("Received "+str)
conn.sendText(str.toUpperCase()+"!!!")
})
conn.on("close", function (code, reason) {
console.log("Connection closed")
})
}).listen(8001)
```
Se other examples inside the folder samples
# ws
The main object, returned by `require("nodejs-websocket")`.
## ws.createServer([options], [callback])
Returns a new `Server` object.
The `options` is an optional object that will be handed to net.createServer() to create an ordinary socket.
If it has a property called "secure" with value `true`, tls.createServer() will be used instead.
The `callback` is a function which is automatically added to the `"connection"` event.
## ws.connect(URL, [options], [callback])
Returns a new `Connection` object, representing a websocket client connection
`URL` is a string with the format "ws://localhost:8000/chat" (the port can be omitted)
`options` is an object that will be passed to net.connect() (or tls.connect() if the protocol is "wss:").
The properties "host" and "port" will be read from the `URL`.
The property `extraHeaders` will be used to add more headers to the HTTP handshake request.
`callback` will be added as "connect" listener
## ws.setBinaryFragmentation(bytes)
Sets the minimum size of a pack of binary data to send in a single frame (default: 512kiB)
## ws.setMaxBufferLength(bytes)
Set the maximum size the internal Buffer can grow (default: 2MiB)
If at any time it stays bigger than this, the connection will be closed with code 1009
This is a security measure, to avoid memory attacks
# Server
The class that represents a websocket server, much like a HTTP server
## server.listen(port, [host], [callback])
Starts accepting connections on a given `port` and `host`.
If the `host` is omitted, the server will accept connections directed to any IPv4 address (INADDR_ANY).
A `port` value of zero will assign a random port.
`callback` will be added as an listener for the `'listening'` event.
## server.close([callback])
Stops the server from accepting new connections and keeps existing connections. This function is asynchronous, the server is finally closed when all connections are ended and the server emits a 'close' event. The optional callback will be called once the 'close' event occurs.
## server.socket
The underlying socket, returned by net.createServer or tls.createServer
## server.connections
An Array with all connected clients. It's useful for broadcasting a message:
```javascript
function broadcast(server, msg) {
server.connections.forEach(function (conn) {
conn.sendText(msg)
})
}
```
## Event: 'listening()'
Emitted when the server has been bound after calling server.listen
## Event: 'close()'
Emitted when the server closes. Note that if connections exist, this event is not emitted until all connections are completely ended.
## Event: 'error(errObj)'
Emitted when an error occurs. The 'close' event will be called directly following this event.
## Event: 'connection(conn)'
Emitted when a new connection is made successfully (after the handshake have been completed). conn is an instance of Connection
# Connection
The class that represents a connection, either a client-created (accepted by a nodejs ws server) or client connection.
The websocket protocol has two types of data frames: text and binary.
Text frames are implemented as simple send function and receive event.
Binary frames are implemented as streams: when you receive binary data, you get a ReadableStream; to send binary data, you must ask for a WritableStream and write into it.
The binary data will be divided into frames and be sent over the socket.
You cannot send text data while sending binary data. If you try to do so, the connection will emit an "error" event
## connection.sendText(str, [callback])
Sends a given string to the other side. You can't send text data in the middle of a binary transmission.
`callback` will be added as a listener to write operation over the socket
## connection.beginBinary()
Asks the connection to begin transmitting binary data. Returns a WritableStream.
The binary transmission will end when the WritableStream finishes (like when you call .end on it)
## connection.sendBinary(data, [callback])
Sends a single chunk of binary data (like calling connection.beginBinary().end(data))
`callback` will be added as a listener to write operation over the socket
## connection.send(data, [callback])
Sends a given string or Buffer to the other side. This is simply an alias for `sendText()` if data is a string or `sendBinary()` if the data is a Buffer.
`callback` will be added as a listener to write operation over the socket
## connection.sendPing([data=''])
Sends a [ping](http://tools.ietf.org/html/rfc6455#section-5.5.2) with optional payload
## connection.close([code, [reason]])
Starts the closing handshake (sends a close frame)
## connection.socket
The underlying net or tls socket
## connection.server
If the connection was accepted by a nodejs server, a reference to it will be saved here. null otherwise
## connection.readyState
One of these constants, representing the current state of the connection. Only an open connection can be used to send/receive data.
* connection.CONNECTING (waiting for handshake completion)
* connection.OPEN
* connection.CLOSING (waiting for the answer to a close frame)
* connection.CLOSED
## connection.outStream
Stores the OutStream object returned by connection.beginBinary(). null if there is no current binary data beeing sent.
## connection.path
For a connection accepted by a server, it is a string representing the path to which the connection was made (example: "/chat"). null otherwise
## connection.headers
Read only map of header names and values. Header names are lower-cased
## Event: 'close(code, reason)'
Emitted when the connection is closed by any side
## Event: 'error(err)'
Emitted in case of error (like trying to send text data while still sending binary data)
## Event: 'text(str)'
Emitted when a text is received. `str` is a string
## Event: 'binary(inStream)'
Emitted when the beginning of binary data is received. `inStream` is a [ReadableStream](https://nodejs.org/api/stream.html#stream_class_stream_readable):
```javascript
var server = ws.createServer(function (conn) {
console.log("New connection")
conn.on("binary", function (inStream) {
// Empty buffer for collecting binary data
var data = new Buffer(0)
// Read chunks of binary data and add to the buffer
inStream.on("readable", function () {
var newData = inStream.read()
if (newData)
data = Buffer.concat([data, newData], data.length+newData.length)
})
inStream.on("end", function () {
console.log("Received " + data.length + " bytes of binary data")
process_my_data(data)
})
})
conn.on("close", function (code, reason) {
console.log("Connection closed")
})
}).listen(8001)
```
## Event: 'connect()'
Emitted when the connection is fully established (after the handshake)
## Event: 'pong(data)'
Emitted when a [pong](http://tools.ietf.org/html/rfc6455#section-5.5.3) is received, usually after a ping was sent. `data` is the pong payload, as a string

113
node_modules/nodejs-websocket/Server.js generated vendored
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@ -1,113 +0,0 @@
/**
* @file Represents a websocket server
*/
'use strict'
function nop() {}
var util = require('util'),
net = require('net'),
tls = require('tls'),
events = require('events'),
Connection
/**
* Creates a new ws server and starts listening for new connections
* @class
* @param {boolean} secure indicates if it should use tls
* @param {Object} [options] will be passed to net.createServer() or tls.createServer()
* @param {Function} [callback] will be added as "connection" listener
* @inherits EventEmitter
* @event listening
* @event close
* @event error an error object is passed
* @event connection a Connection object is passed
*/
function Server(secure, options, callback) {
var that = this
if (typeof options === 'function') {
callback = options
options = undefined
}
var onConnection = function (socket) {
var conn = new Connection(socket, that, function () {
that.connections.push(conn)
conn.removeListener('error', nop)
that.emit('connection', conn)
})
conn.on('close', function () {
var pos = that.connections.indexOf(conn)
if (pos !== -1) {
that.connections.splice(pos, 1)
}
})
// Ignore errors before the connection is established
conn.on('error', nop)
}
if (secure) {
this.socket = tls.createServer(options, onConnection)
} else {
this.socket = net.createServer(options, onConnection)
}
this.socket.on('close', function () {
that.emit('close')
})
this.socket.on('error', function (err) {
that.emit('error', err)
})
this.connections = []
// super constructor
events.EventEmitter.call(this)
if (callback) {
this.on('connection', callback)
}
}
util.inherits(Server, events.EventEmitter)
module.exports = Server
Connection = require('./Connection')
/**
* Start listening for connections
* @param {number} port
* @param {string} [host]
* @param {Function} [callback] will be added as "connection" listener
*/
Server.prototype.listen = function (port, host, callback) {
var that = this
if (typeof host === 'function') {
callback = host
host = undefined
}
if (callback) {
this.on('listening', callback)
}
this.socket.listen(port, host, function () {
that.emit('listening')
})
return this
}
/**
* Stops the server from accepting new connections and keeps existing connections.
* This function is asynchronous, the server is finally closed when all connections are ended and the server emits a 'close' event.
* The optional callback will be called once the 'close' event occurs.
* @param {function()} [callback]
*/
Server.prototype.close = function (callback) {
if (callback) {
this.once('close', callback)
}
this.socket.close()
}

152
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@ -1,152 +0,0 @@
/**
* @file Utility functions for creating frames
*/
'use strict'
/**
* Creates a text frame
* @param {string} data
* @param {boolean} [masked=false] if the frame should be masked
* @returns {Buffer}
* @private
*/
exports.createTextFrame = function (data, masked) {
var payload, meta
payload = new Buffer(data)
meta = generateMetaData(true, 1, masked === undefined ? false : masked, payload)
return Buffer.concat([meta, payload], meta.length + payload.length)
}
/**
* Create a binary frame
* @param {Buffer} data
* @param {boolean} [masked=false] if the frame should be masked
* @param {boolean} [first=true] if this is the first frame in a sequence
* @param {boolean} [fin=true] if this is the final frame in a sequence
* @returns {Buffer}
* @private
*/
exports.createBinaryFrame = function (data, masked, first, fin) {
var payload, meta
first = first === undefined ? true : first
masked = masked === undefined ? false : masked
if (masked) {
payload = new Buffer(data.length)
data.copy(payload)
} else {
payload = data
}
meta = generateMetaData(fin === undefined ? true : fin, first ? 2 : 0, masked, payload)
return Buffer.concat([meta, payload], meta.length + payload.length)
}
/**
* Create a close frame
* @param {number} code
* @param {string} [reason='']
* @param {boolean} [masked=false] if the frame should be masked
* @returns {Buffer}
* @private
*/
exports.createCloseFrame = function (code, reason, masked) {
var payload, meta
if (code !== undefined && code !== 1005) {
payload = new Buffer(reason === undefined ? '--' : '--' + reason)
payload.writeUInt16BE(code, 0)
} else {
payload = new Buffer(0)
}
meta = generateMetaData(true, 8, masked === undefined ? false : masked, payload)
return Buffer.concat([meta, payload], meta.length + payload.length)
}
/**
* Create a ping frame
* @param {string} data
* @param {boolean} [masked=false] if the frame should be masked
* @returns {Buffer}
* @private
*/
exports.createPingFrame = function (data, masked) {
var payload, meta
payload = new Buffer(data)
meta = generateMetaData(true, 9, masked === undefined ? false : masked, payload)
return Buffer.concat([meta, payload], meta.length + payload.length)
}
/**
* Create a pong frame
* @param {string} data
* @param {boolean} [masked=false] if the frame should be masked
* @returns {Buffer}
* @private
*/
exports.createPongFrame = function (data, masked) {
var payload, meta
payload = new Buffer(data)
meta = generateMetaData(true, 10, masked === undefined ? false : masked, payload)
return Buffer.concat([meta, payload], meta.length + payload.length)
}
/**
* Creates the meta-data portion of the frame
* If the frame is masked, the payload is altered accordingly
* @param {boolean} fin
* @param {number} opcode
* @param {boolean} masked
* @param {Buffer} payload
* @returns {Buffer}
* @private
*/
function generateMetaData(fin, opcode, masked, payload) {
var len, meta, start, mask, i
len = payload.length
// Creates the buffer for meta-data
meta = new Buffer(2 + (len < 126 ? 0 : (len < 65536 ? 2 : 8)) + (masked ? 4 : 0))
// Sets fin and opcode
meta[0] = (fin ? 128 : 0) + opcode
// Sets the mask and length
meta[1] = masked ? 128 : 0
start = 2
if (len < 126) {
meta[1] += len
} else if (len < 65536) {
meta[1] += 126
meta.writeUInt16BE(len, 2)
start += 2
} else {
// Warning: JS doesn't support integers greater than 2^53
meta[1] += 127
meta.writeUInt32BE(Math.floor(len / Math.pow(2, 32)), 2)
meta.writeUInt32BE(len % Math.pow(2, 32), 6)
start += 8
}
// Set the mask-key
if (masked) {
mask = new Buffer(4)
for (i = 0; i < 4; i++) {
meta[start + i] = mask[i] = Math.floor(Math.random() * 256)
}
for (i = 0; i < payload.length; i++) {
payload[i] ^= mask[i % 4]
}
start += 4
}
return meta
}

100
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@ -1,100 +0,0 @@
'use strict'
var Server = require('./Server'),
Connection = require('./Connection'),
net = require('net'),
tls = require('tls'),
url = require('url')
/**
* Create a WebSocket server
* @param {Object} [options] will be passed to net.createServer() or tls.createServer(), with the additional property 'secure' (a boolean)
* @param {Function} callback will be added as 'connection' listener
* @returns {Server}
*/
exports.createServer = function (options, callback) {
if (typeof options === 'function' || !arguments.length) {
return new Server(false, options)
}
return new Server(Boolean(options.secure), options, callback)
}
/**
* Create a WebSocket client
* @param {string} URL with the format 'ws://localhost:8000/chat' (the port can be ommited)
* @param {Object} [options] will be passed to net.connect() or tls.connect()
* @param {Function} callback will be added as 'connect' listener
* @returns {Connection}
*/
exports.connect = function (URL, options, callback) {
var socket
if (typeof options === 'function') {
callback = options
options = undefined
}
options = options || {}
URL = parseWSURL(URL)
options.port = URL.port
options.host = URL.host
if (options.hasOwnProperty('extraHeaders')) {
URL.extraHeaders = options.extraHeaders
}
if (URL.secure) {
socket = tls.connect(options)
} else {
socket = net.connect(options)
}
return new Connection(socket, URL, callback)
}
/**
* Set the minimum size of a pack of binary data to send in a single frame
* @param {number} bytes
*/
exports.setBinaryFragmentation = function (bytes) {
Connection.binaryFragmentation = bytes
}
/**
* Set the maximum size the internal Buffer can grow, to avoid memory attacks
* @param {number} bytes
*/
exports.setMaxBufferLength = function (bytes) {
Connection.maxBufferLength = bytes
}
/**
* Parse the WebSocket URL
* @param {string} URL
* @returns {Object}
* @private
*/
function parseWSURL(URL) {
var parts, secure
parts = url.parse(URL)
parts.protocol = parts.protocol || 'ws:'
if (parts.protocol === 'ws:') {
secure = false
} else if (parts.protocol === 'wss:') {
secure = true
} else {
throw new Error('Invalid protocol ' + parts.protocol + '. It must be ws or wss')
}
parts.port = parts.port || (secure ? 443 : 80)
parts.path = parts.path || '/'
return {
path: parts.path,
port: parts.port,
secure: secure,
host: parts.hostname
}
}

60
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@ -1,60 +0,0 @@
{
"name": "nodejs-websocket",
"version": "1.6.0",
"author": {
"name": "Sitegui",
"email": "sitegui@sitegui.com.br"
},
"description": "Basic server&client approach to websocket (text and binary frames)",
"main": "./index.js",
"repository": {
"type": "git",
"url": "git+https://github.com/sitegui/nodejs-websocket.git"
},
"keywords": [
"websocket",
"websocket-server",
"websocket-client"
],
"license": "MIT",
"engines": {
"node": ">=0.10"
},
"scripts": {
"test": "mocha -R spec -b"
},
"devDependencies": {
"mocha": "^2.4.5",
"should": "^8.3.1"
},
"gitHead": "7398f57a6054724418ccaa0829daddc5ff62c908",
"bugs": {
"url": "https://github.com/sitegui/nodejs-websocket/issues"
},
"homepage": "https://github.com/sitegui/nodejs-websocket#readme",
"_id": "nodejs-websocket@1.6.0",
"_shasum": "e6db8d2e5af9e730bf70818bfd189783fe02797a",
"_from": "nodejs-websocket@*",
"_npmVersion": "2.14.20",
"_nodeVersion": "4.4.0",
"_npmUser": {
"name": "sitegui",
"email": "sitegui@sitegui.com.br"
},
"dist": {
"shasum": "e6db8d2e5af9e730bf70818bfd189783fe02797a",
"tarball": "https://registry.npmjs.org/nodejs-websocket/-/nodejs-websocket-1.6.0.tgz"
},
"maintainers": [
{
"name": "sitegui",
"email": "sitegui@sitegui.com.br"
}
],
"_npmOperationalInternal": {
"host": "packages-16-east.internal.npmjs.com",
"tmp": "tmp/nodejs-websocket-1.6.0.tgz_1462798103164_0.4242532418575138"
},
"directories": {},
"_resolved": "https://registry.npmjs.org/nodejs-websocket/-/nodejs-websocket-1.6.0.tgz"
}

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@ -0,0 +1,7 @@
language: node_js
node_js:
- 'node'
- '5'
- '4'
- '0.12'
- '0.10'

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@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) Feross Aboukhadijeh
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

581
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@ -0,0 +1,581 @@
# safe-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][npm-url]
#### Safer Node.js Buffer API
**Use the new Node.js v6 Buffer APIs (`Buffer.from`, `Buffer.alloc`,
`Buffer.allocUnsafe`, `Buffer.allocUnsafeSlow`) in Node.js v0.10, v0.12, v4.x, and v5.x.**
**Uses the built-in implementations when available.**
[travis-image]: https://img.shields.io/travis/feross/safe-buffer.svg
[travis-url]: https://travis-ci.org/feross/safe-buffer
[npm-image]: https://img.shields.io/npm/v/safe-buffer.svg
[npm-url]: https://npmjs.org/package/safe-buffer
[downloads-image]: https://img.shields.io/npm/dm/safe-buffer.svg
## install
```
npm install safe-buffer
```
## usage
The goal of this package is to provide a safe replacement for the node.js `Buffer`.
It's a drop-in replacement for `Buffer`. You can use it by adding one `require` line to
the top of your node.js modules:
```js
var Buffer = require('safe-buffer').Buffer
// Existing buffer code will continue to work without issues:
new Buffer('hey', 'utf8')
new Buffer([1, 2, 3], 'utf8')
new Buffer(obj)
new Buffer(16) // create an uninitialized buffer (potentially unsafe)
// But you can use these new explicit APIs to make clear what you want:
Buffer.from('hey', 'utf8') // convert from many types to a Buffer
Buffer.alloc(16) // create a zero-filled buffer (safe)
Buffer.allocUnsafe(16) // create an uninitialized buffer (potentially unsafe)
```
## api
### Class Method: Buffer.from(array)
<!-- YAML
added: v3.0.0
-->
* `array` {Array}
Allocates a new `Buffer` using an `array` of octets.
```js
const buf = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]);
// creates a new Buffer containing ASCII bytes
// ['b','u','f','f','e','r']
```
A `TypeError` will be thrown if `array` is not an `Array`.
### Class Method: Buffer.from(arrayBuffer[, byteOffset[, length]])
<!-- YAML
added: v5.10.0
-->
* `arrayBuffer` {ArrayBuffer} The `.buffer` property of a `TypedArray` or
a `new ArrayBuffer()`
* `byteOffset` {Number} Default: `0`
* `length` {Number} Default: `arrayBuffer.length - byteOffset`
When passed a reference to the `.buffer` property of a `TypedArray` instance,
the newly created `Buffer` will share the same allocated memory as the
TypedArray.
```js
const arr = new Uint16Array(2);
arr[0] = 5000;
arr[1] = 4000;
const buf = Buffer.from(arr.buffer); // shares the memory with arr;
console.log(buf);
// Prints: <Buffer 88 13 a0 0f>
// changing the TypedArray changes the Buffer also
arr[1] = 6000;
console.log(buf);
// Prints: <Buffer 88 13 70 17>
```
The optional `byteOffset` and `length` arguments specify a memory range within
the `arrayBuffer` that will be shared by the `Buffer`.
```js
const ab = new ArrayBuffer(10);
const buf = Buffer.from(ab, 0, 2);
console.log(buf.length);
// Prints: 2
```
A `TypeError` will be thrown if `arrayBuffer` is not an `ArrayBuffer`.
### Class Method: Buffer.from(buffer)
<!-- YAML
added: v3.0.0
-->
* `buffer` {Buffer}
Copies the passed `buffer` data onto a new `Buffer` instance.
```js
const buf1 = Buffer.from('buffer');
const buf2 = Buffer.from(buf1);
buf1[0] = 0x61;
console.log(buf1.toString());
// 'auffer'
console.log(buf2.toString());
// 'buffer' (copy is not changed)
```
A `TypeError` will be thrown if `buffer` is not a `Buffer`.
### Class Method: Buffer.from(str[, encoding])
<!-- YAML
added: v5.10.0
-->
* `str` {String} String to encode.
* `encoding` {String} Encoding to use, Default: `'utf8'`
Creates a new `Buffer` containing the given JavaScript string `str`. If
provided, the `encoding` parameter identifies the character encoding.
If not provided, `encoding` defaults to `'utf8'`.
```js
const buf1 = Buffer.from('this is a tést');
console.log(buf1.toString());
// prints: this is a tést
console.log(buf1.toString('ascii'));
// prints: this is a tC)st
const buf2 = Buffer.from('7468697320697320612074c3a97374', 'hex');
console.log(buf2.toString());
// prints: this is a tést
```
A `TypeError` will be thrown if `str` is not a string.
### Class Method: Buffer.alloc(size[, fill[, encoding]])
<!-- YAML
added: v5.10.0
-->
* `size` {Number}
* `fill` {Value} Default: `undefined`
* `encoding` {String} Default: `utf8`
Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the
`Buffer` will be *zero-filled*.
```js
const buf = Buffer.alloc(5);
console.log(buf);
// <Buffer 00 00 00 00 00>
```
The `size` must be less than or equal to the value of
`require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is
`(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will
be created if a `size` less than or equal to 0 is specified.
If `fill` is specified, the allocated `Buffer` will be initialized by calling
`buf.fill(fill)`. See [`buf.fill()`][] for more information.
```js
const buf = Buffer.alloc(5, 'a');
console.log(buf);
// <Buffer 61 61 61 61 61>
```
If both `fill` and `encoding` are specified, the allocated `Buffer` will be
initialized by calling `buf.fill(fill, encoding)`. For example:
```js
const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64');
console.log(buf);
// <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64>
```
Calling `Buffer.alloc(size)` can be significantly slower than the alternative
`Buffer.allocUnsafe(size)` but ensures that the newly created `Buffer` instance
contents will *never contain sensitive data*.
A `TypeError` will be thrown if `size` is not a number.
### Class Method: Buffer.allocUnsafe(size)
<!-- YAML
added: v5.10.0
-->
* `size` {Number}
Allocates a new *non-zero-filled* `Buffer` of `size` bytes. The `size` must
be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit
architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is
thrown. A zero-length Buffer will be created if a `size` less than or equal to
0 is specified.
The underlying memory for `Buffer` instances created in this way is *not
initialized*. The contents of the newly created `Buffer` are unknown and
*may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such
`Buffer` instances to zeroes.
```js
const buf = Buffer.allocUnsafe(5);
console.log(buf);
// <Buffer 78 e0 82 02 01>
// (octets will be different, every time)
buf.fill(0);
console.log(buf);
// <Buffer 00 00 00 00 00>
```
A `TypeError` will be thrown if `size` is not a number.
Note that the `Buffer` module pre-allocates an internal `Buffer` instance of
size `Buffer.poolSize` that is used as a pool for the fast allocation of new
`Buffer` instances created using `Buffer.allocUnsafe(size)` (and the deprecated
`new Buffer(size)` constructor) only when `size` is less than or equal to
`Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two). The default
value of `Buffer.poolSize` is `8192` but can be modified.
Use of this pre-allocated internal memory pool is a key difference between
calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`.
Specifically, `Buffer.alloc(size, fill)` will *never* use the internal Buffer
pool, while `Buffer.allocUnsafe(size).fill(fill)` *will* use the internal
Buffer pool if `size` is less than or equal to half `Buffer.poolSize`. The
difference is subtle but can be important when an application requires the
additional performance that `Buffer.allocUnsafe(size)` provides.
### Class Method: Buffer.allocUnsafeSlow(size)
<!-- YAML
added: v5.10.0
-->
* `size` {Number}
Allocates a new *non-zero-filled* and non-pooled `Buffer` of `size` bytes. The
`size` must be less than or equal to the value of
`require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is
`(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will
be created if a `size` less than or equal to 0 is specified.
The underlying memory for `Buffer` instances created in this way is *not
initialized*. The contents of the newly created `Buffer` are unknown and
*may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such
`Buffer` instances to zeroes.
When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances,
allocations under 4KB are, by default, sliced from a single pre-allocated
`Buffer`. This allows applications to avoid the garbage collection overhead of
creating many individually allocated Buffers. This approach improves both
performance and memory usage by eliminating the need to track and cleanup as
many `Persistent` objects.
However, in the case where a developer may need to retain a small chunk of
memory from a pool for an indeterminate amount of time, it may be appropriate
to create an un-pooled Buffer instance using `Buffer.allocUnsafeSlow()` then
copy out the relevant bits.
```js
// need to keep around a few small chunks of memory
const store = [];
socket.on('readable', () => {
const data = socket.read();
// allocate for retained data
const sb = Buffer.allocUnsafeSlow(10);
// copy the data into the new allocation
data.copy(sb, 0, 0, 10);
store.push(sb);
});
```
Use of `Buffer.allocUnsafeSlow()` should be used only as a last resort *after*
a developer has observed undue memory retention in their applications.
A `TypeError` will be thrown if `size` is not a number.
### All the Rest
The rest of the `Buffer` API is exactly the same as in node.js.
[See the docs](https://nodejs.org/api/buffer.html).
## Related links
- [Node.js issue: Buffer(number) is unsafe](https://github.com/nodejs/node/issues/4660)
- [Node.js Enhancement Proposal: Buffer.from/Buffer.alloc/Buffer.zalloc/Buffer() soft-deprecate](https://github.com/nodejs/node-eps/pull/4)
## Why is `Buffer` unsafe?
Today, the node.js `Buffer` constructor is overloaded to handle many different argument
types like `String`, `Array`, `Object`, `TypedArrayView` (`Uint8Array`, etc.),
`ArrayBuffer`, and also `Number`.
The API is optimized for convenience: you can throw any type at it, and it will try to do
what you want.
Because the Buffer constructor is so powerful, you often see code like this:
```js
// Convert UTF-8 strings to hex
function toHex (str) {
return new Buffer(str).toString('hex')
}
```
***But what happens if `toHex` is called with a `Number` argument?***
### Remote Memory Disclosure
If an attacker can make your program call the `Buffer` constructor with a `Number`
argument, then they can make it allocate uninitialized memory from the node.js process.
This could potentially disclose TLS private keys, user data, or database passwords.
When the `Buffer` constructor is passed a `Number` argument, it returns an
**UNINITIALIZED** block of memory of the specified `size`. When you create a `Buffer` like
this, you **MUST** overwrite the contents before returning it to the user.
From the [node.js docs](https://nodejs.org/api/buffer.html#buffer_new_buffer_size):
> `new Buffer(size)`
>
> - `size` Number
>
> The underlying memory for `Buffer` instances created in this way is not initialized.
> **The contents of a newly created `Buffer` are unknown and could contain sensitive
> data.** Use `buf.fill(0)` to initialize a Buffer to zeroes.
(Emphasis our own.)
Whenever the programmer intended to create an uninitialized `Buffer` you often see code
like this:
```js
var buf = new Buffer(16)
// Immediately overwrite the uninitialized buffer with data from another buffer
for (var i = 0; i < buf.length; i++) {
buf[i] = otherBuf[i]
}
```
### Would this ever be a problem in real code?
Yes. It's surprisingly common to forget to check the type of your variables in a
dynamically-typed language like JavaScript.
Usually the consequences of assuming the wrong type is that your program crashes with an
uncaught exception. But the failure mode for forgetting to check the type of arguments to
the `Buffer` constructor is more catastrophic.
Here's an example of a vulnerable service that takes a JSON payload and converts it to
hex:
```js
// Take a JSON payload {str: "some string"} and convert it to hex
var server = http.createServer(function (req, res) {
var data = ''
req.setEncoding('utf8')
req.on('data', function (chunk) {
data += chunk
})
req.on('end', function () {
var body = JSON.parse(data)
res.end(new Buffer(body.str).toString('hex'))
})
})
server.listen(8080)
```
In this example, an http client just has to send:
```json
{
"str": 1000
}
```
and it will get back 1,000 bytes of uninitialized memory from the server.
This is a very serious bug. It's similar in severity to the
[the Heartbleed bug](http://heartbleed.com/) that allowed disclosure of OpenSSL process
memory by remote attackers.
### Which real-world packages were vulnerable?
#### [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht)
[Mathias Buus](https://github.com/mafintosh) and I
([Feross Aboukhadijeh](http://feross.org/)) found this issue in one of our own packages,
[`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht). The bug would allow
anyone on the internet to send a series of messages to a user of `bittorrent-dht` and get
them to reveal 20 bytes at a time of uninitialized memory from the node.js process.
Here's
[the commit](https://github.com/feross/bittorrent-dht/commit/6c7da04025d5633699800a99ec3fbadf70ad35b8)
that fixed it. We released a new fixed version, created a
[Node Security Project disclosure](https://nodesecurity.io/advisories/68), and deprecated all
vulnerable versions on npm so users will get a warning to upgrade to a newer version.
#### [`ws`](https://www.npmjs.com/package/ws)
That got us wondering if there were other vulnerable packages. Sure enough, within a short
period of time, we found the same issue in [`ws`](https://www.npmjs.com/package/ws), the
most popular WebSocket implementation in node.js.
If certain APIs were called with `Number` parameters instead of `String` or `Buffer` as
expected, then uninitialized server memory would be disclosed to the remote peer.
These were the vulnerable methods:
```js
socket.send(number)
socket.ping(number)
socket.pong(number)
```
Here's a vulnerable socket server with some echo functionality:
```js
server.on('connection', function (socket) {
socket.on('message', function (message) {
message = JSON.parse(message)
if (message.type === 'echo') {
socket.send(message.data) // send back the user's message
}
})
})
```
`socket.send(number)` called on the server, will disclose server memory.
Here's [the release](https://github.com/websockets/ws/releases/tag/1.0.1) where the issue
was fixed, with a more detailed explanation. Props to
[Arnout Kazemier](https://github.com/3rd-Eden) for the quick fix. Here's the
[Node Security Project disclosure](https://nodesecurity.io/advisories/67).
### What's the solution?
It's important that node.js offers a fast way to get memory otherwise performance-critical
applications would needlessly get a lot slower.
But we need a better way to *signal our intent* as programmers. **When we want
uninitialized memory, we should request it explicitly.**
Sensitive functionality should not be packed into a developer-friendly API that loosely
accepts many different types. This type of API encourages the lazy practice of passing
variables in without checking the type very carefully.
#### A new API: `Buffer.allocUnsafe(number)`
The functionality of creating buffers with uninitialized memory should be part of another
API. We propose `Buffer.allocUnsafe(number)`. This way, it's not part of an API that
frequently gets user input of all sorts of different types passed into it.
```js
var buf = Buffer.allocUnsafe(16) // careful, uninitialized memory!
// Immediately overwrite the uninitialized buffer with data from another buffer
for (var i = 0; i < buf.length; i++) {
buf[i] = otherBuf[i]
}
```
### How do we fix node.js core?
We sent [a PR to node.js core](https://github.com/nodejs/node/pull/4514) (merged as
`semver-major`) which defends against one case:
```js
var str = 16
new Buffer(str, 'utf8')
```
In this situation, it's implied that the programmer intended the first argument to be a
string, since they passed an encoding as a second argument. Today, node.js will allocate
uninitialized memory in the case of `new Buffer(number, encoding)`, which is probably not
what the programmer intended.
But this is only a partial solution, since if the programmer does `new Buffer(variable)`
(without an `encoding` parameter) there's no way to know what they intended. If `variable`
is sometimes a number, then uninitialized memory will sometimes be returned.
### What's the real long-term fix?
We could deprecate and remove `new Buffer(number)` and use `Buffer.allocUnsafe(number)` when
we need uninitialized memory. But that would break 1000s of packages.
~~We believe the best solution is to:~~
~~1. Change `new Buffer(number)` to return safe, zeroed-out memory~~
~~2. Create a new API for creating uninitialized Buffers. We propose: `Buffer.allocUnsafe(number)`~~
#### Update
We now support adding three new APIs:
- `Buffer.from(value)` - convert from any type to a buffer
- `Buffer.alloc(size)` - create a zero-filled buffer
- `Buffer.allocUnsafe(size)` - create an uninitialized buffer with given size
This solves the core problem that affected `ws` and `bittorrent-dht` which is
`Buffer(variable)` getting tricked into taking a number argument.
This way, existing code continues working and the impact on the npm ecosystem will be
minimal. Over time, npm maintainers can migrate performance-critical code to use
`Buffer.allocUnsafe(number)` instead of `new Buffer(number)`.
### Conclusion
We think there's a serious design issue with the `Buffer` API as it exists today. It
promotes insecure software by putting high-risk functionality into a convenient API
with friendly "developer ergonomics".
This wasn't merely a theoretical exercise because we found the issue in some of the
most popular npm packages.
Fortunately, there's an easy fix that can be applied today. Use `safe-buffer` in place of
`buffer`.
```js
var Buffer = require('safe-buffer').Buffer
```
Eventually, we hope that node.js core can switch to this new, safer behavior. We believe
the impact on the ecosystem would be minimal since it's not a breaking change.
Well-maintained, popular packages would be updated to use `Buffer.alloc` quickly, while
older, insecure packages would magically become safe from this attack vector.
## links
- [Node.js PR: buffer: throw if both length and enc are passed](https://github.com/nodejs/node/pull/4514)
- [Node Security Project disclosure for `ws`](https://nodesecurity.io/advisories/67)
- [Node Security Project disclosure for`bittorrent-dht`](https://nodesecurity.io/advisories/68)
## credit
The original issues in `bittorrent-dht`
([disclosure](https://nodesecurity.io/advisories/68)) and
`ws` ([disclosure](https://nodesecurity.io/advisories/67)) were discovered by
[Mathias Buus](https://github.com/mafintosh) and
[Feross Aboukhadijeh](http://feross.org/).
Thanks to [Adam Baldwin](https://github.com/evilpacket) for helping disclose these issues
and for his work running the [Node Security Project](https://nodesecurity.io/).
Thanks to [John Hiesey](https://github.com/jhiesey) for proofreading this README and
auditing the code.
## license
MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org)

1
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module.exports = require('buffer')

58
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@ -0,0 +1,58 @@
var buffer = require('buffer')
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
module.exports = buffer
} else {
// Copy properties from require('buffer')
Object.keys(buffer).forEach(function (prop) {
exports[prop] = buffer[prop]
})
exports.Buffer = SafeBuffer
}
function SafeBuffer (arg, encodingOrOffset, length) {
return Buffer(arg, encodingOrOffset, length)
}
// Copy static methods from Buffer
Object.keys(Buffer).forEach(function (prop) {
SafeBuffer[prop] = Buffer[prop]
})
SafeBuffer.from = function (arg, encodingOrOffset, length) {
if (typeof arg === 'number') {
throw new TypeError('Argument must not be a number')
}
return Buffer(arg, encodingOrOffset, length)
}
SafeBuffer.alloc = function (size, fill, encoding) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
var buf = Buffer(size)
if (fill !== undefined) {
if (typeof encoding === 'string') {
buf.fill(fill, encoding)
} else {
buf.fill(fill)
}
} else {
buf.fill(0)
}
return buf
}
SafeBuffer.allocUnsafe = function (size) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
return Buffer(size)
}
SafeBuffer.allocUnsafeSlow = function (size) {
if (typeof size !== 'number') {
throw new TypeError('Argument must be a number')
}
return buffer.SlowBuffer(size)
}

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{
"_args": [
[
{
"raw": "safe-buffer@~5.0.1",
"scope": null,
"escapedName": "safe-buffer",
"name": "safe-buffer",
"rawSpec": "~5.0.1",
"spec": ">=5.0.1 <5.1.0",
"type": "range"
},
"/Users/gerrit/Documents/node.js-Projects/tinkerforge/node_modules/ws"
]
],
"_from": "safe-buffer@>=5.0.1 <5.1.0",
"_id": "safe-buffer@5.0.1",
"_inCache": true,
"_location": "/safe-buffer",
"_nodeVersion": "4.4.5",
"_npmOperationalInternal": {
"host": "packages-12-west.internal.npmjs.com",
"tmp": "tmp/safe-buffer-5.0.1.tgz_1464588482081_0.8112505874596536"
},
"_npmUser": {
"name": "feross",
"email": "feross@feross.org"
},
"_npmVersion": "2.15.5",
"_phantomChildren": {},
"_requested": {
"raw": "safe-buffer@~5.0.1",
"scope": null,
"escapedName": "safe-buffer",
"name": "safe-buffer",
"rawSpec": "~5.0.1",
"spec": ">=5.0.1 <5.1.0",
"type": "range"
},
"_requiredBy": [
"/ws"
],
"_resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.0.1.tgz",
"_shasum": "d263ca54696cd8a306b5ca6551e92de57918fbe7",
"_shrinkwrap": null,
"_spec": "safe-buffer@~5.0.1",
"_where": "/Users/gerrit/Documents/node.js-Projects/tinkerforge/node_modules/ws",
"author": {
"name": "Feross Aboukhadijeh",
"email": "feross@feross.org",
"url": "http://feross.org"
},
"browser": "./browser.js",
"bugs": {
"url": "https://github.com/feross/safe-buffer/issues"
},
"dependencies": {},
"description": "Safer Node.js Buffer API",
"devDependencies": {
"standard": "^7.0.0",
"tape": "^4.0.0",
"zuul": "^3.0.0"
},
"directories": {},
"dist": {
"shasum": "d263ca54696cd8a306b5ca6551e92de57918fbe7",
"tarball": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.0.1.tgz"
},
"gitHead": "1e371a367da962afae2bebc527b50271c739d28c",
"homepage": "https://github.com/feross/safe-buffer",
"keywords": [
"buffer",
"buffer allocate",
"node security",
"safe",
"safe-buffer",
"security",
"uninitialized"
],
"license": "MIT",
"main": "index.js",
"maintainers": [
{
"name": "feross",
"email": "feross@feross.org"
},
{
"name": "mafintosh",
"email": "mathiasbuus@gmail.com"
}
],
"name": "safe-buffer",
"optionalDependencies": {},
"readme": "ERROR: No README data found!",
"repository": {
"type": "git",
"url": "git://github.com/feross/safe-buffer.git"
},
"scripts": {
"test": "standard && tape test.js"
},
"version": "5.0.1"
}

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var test = require('tape')
var SafeBuffer = require('./').Buffer
test('new SafeBuffer(value) works just like Buffer', function (t) {
t.deepEqual(new SafeBuffer('hey'), new Buffer('hey'))
t.deepEqual(new SafeBuffer('hey', 'utf8'), new Buffer('hey', 'utf8'))
t.deepEqual(new SafeBuffer('686579', 'hex'), new Buffer('686579', 'hex'))
t.deepEqual(new SafeBuffer([1, 2, 3]), new Buffer([1, 2, 3]))
t.deepEqual(new SafeBuffer(new Uint8Array([1, 2, 3])), new Buffer(new Uint8Array([1, 2, 3])))
t.equal(typeof SafeBuffer.isBuffer, 'function')
t.equal(SafeBuffer.isBuffer(new SafeBuffer('hey')), true)
t.equal(Buffer.isBuffer(new SafeBuffer('hey')), true)
t.notOk(SafeBuffer.isBuffer({}))
t.end()
})
test('SafeBuffer.from(value) converts to a Buffer', function (t) {
t.deepEqual(SafeBuffer.from('hey'), new Buffer('hey'))
t.deepEqual(SafeBuffer.from('hey', 'utf8'), new Buffer('hey', 'utf8'))
t.deepEqual(SafeBuffer.from('686579', 'hex'), new Buffer('686579', 'hex'))
t.deepEqual(SafeBuffer.from([1, 2, 3]), new Buffer([1, 2, 3]))
t.deepEqual(SafeBuffer.from(new Uint8Array([1, 2, 3])), new Buffer(new Uint8Array([1, 2, 3])))
t.end()
})
test('SafeBuffer.alloc(number) returns zeroed-out memory', function (t) {
for (var i = 0; i < 10; i++) {
var expected1 = new Buffer(1000)
expected1.fill(0)
t.deepEqual(SafeBuffer.alloc(1000), expected1)
var expected2 = new Buffer(1000 * 1000)
expected2.fill(0)
t.deepEqual(SafeBuffer.alloc(1000 * 1000), expected2)
}
t.end()
})
test('SafeBuffer.allocUnsafe(number)', function (t) {
var buf = SafeBuffer.allocUnsafe(100) // unitialized memory
t.equal(buf.length, 100)
t.equal(SafeBuffer.isBuffer(buf), true)
t.equal(Buffer.isBuffer(buf), true)
t.end()
})
test('SafeBuffer.from() throws with number types', function (t) {
t.plan(5)
t.throws(function () {
SafeBuffer.from(0)
})
t.throws(function () {
SafeBuffer.from(-1)
})
t.throws(function () {
SafeBuffer.from(NaN)
})
t.throws(function () {
SafeBuffer.from(Infinity)
})
t.throws(function () {
SafeBuffer.from(99)
})
})
test('SafeBuffer.allocUnsafe() throws with non-number types', function (t) {
t.plan(4)
t.throws(function () {
SafeBuffer.allocUnsafe('hey')
})
t.throws(function () {
SafeBuffer.allocUnsafe('hey', 'utf8')
})
t.throws(function () {
SafeBuffer.allocUnsafe([1, 2, 3])
})
t.throws(function () {
SafeBuffer.allocUnsafe({})
})
})
test('SafeBuffer.alloc() throws with non-number types', function (t) {
t.plan(4)
t.throws(function () {
SafeBuffer.alloc('hey')
})
t.throws(function () {
SafeBuffer.alloc('hey', 'utf8')
})
t.throws(function () {
SafeBuffer.alloc([1, 2, 3])
})
t.throws(function () {
SafeBuffer.alloc({})
})
})

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The MIT License (MIT)
Copyright (c) 2015 Unshift.io, Arnout Kazemier, the Contributors.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

138
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'use strict';
var has = Object.prototype.hasOwnProperty;
/**
* An auto incrementing id which we can use to create "unique" Ultron instances
* so we can track the event emitters that are added through the Ultron
* interface.
*
* @type {Number}
* @private
*/
var id = 0;
/**
* Ultron is high-intelligence robot. It gathers intelligence so it can start improving
* upon his rudimentary design. It will learn from your EventEmitting patterns
* and exterminate them.
*
* @constructor
* @param {EventEmitter} ee EventEmitter instance we need to wrap.
* @api public
*/
function Ultron(ee) {
if (!(this instanceof Ultron)) return new Ultron(ee);
this.id = id++;
this.ee = ee;
}
/**
* Register a new EventListener for the given event.
*
* @param {String} event Name of the event.
* @param {Functon} fn Callback function.
* @param {Mixed} context The context of the function.
* @returns {Ultron}
* @api public
*/
Ultron.prototype.on = function on(event, fn, context) {
fn.__ultron = this.id;
this.ee.on(event, fn, context);
return this;
};
/**
* Add an EventListener that's only called once.
*
* @param {String} event Name of the event.
* @param {Function} fn Callback function.
* @param {Mixed} context The context of the function.
* @returns {Ultron}
* @api public
*/
Ultron.prototype.once = function once(event, fn, context) {
fn.__ultron = this.id;
this.ee.once(event, fn, context);
return this;
};
/**
* Remove the listeners we assigned for the given event.
*
* @returns {Ultron}
* @api public
*/
Ultron.prototype.remove = function remove() {
var args = arguments
, ee = this.ee
, event;
//
// When no event names are provided we assume that we need to clear all the
// events that were assigned through us.
//
if (args.length === 1 && 'string' === typeof args[0]) {
args = args[0].split(/[, ]+/);
} else if (!args.length) {
if (ee.eventNames) {
args = ee.eventNames();
} else if (ee._events) {
args = [];
for (event in ee._events) {
if (has.call(ee._events, event)) args.push(event);
}
if (Object.getOwnPropertySymbols) {
args = args.concat(Object.getOwnPropertySymbols(ee._events));
}
}
}
for (var i = 0; i < args.length; i++) {
var listeners = ee.listeners(args[i]);
for (var j = 0; j < listeners.length; j++) {
event = listeners[j];
//
// Once listeners have a `listener` property that stores the real listener
// in the EventEmitter that ships with Node.js.
//
if (event.listener) {
if (event.listener.__ultron !== this.id) continue;
delete event.listener.__ultron;
} else {
if (event.__ultron !== this.id) continue;
delete event.__ultron;
}
ee.removeListener(args[i], event);
}
}
return this;
};
/**
* Destroy the Ultron instance, remove all listeners and release all references.
*
* @returns {Boolean}
* @api public
*/
Ultron.prototype.destroy = function destroy() {
if (!this.ee) return false;
this.remove();
this.ee = null;
return true;
};
//
// Expose the module.
//
module.exports = Ultron;

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{
"_args": [
[
{
"raw": "ultron@~1.1.0",
"scope": null,
"escapedName": "ultron",
"name": "ultron",
"rawSpec": "~1.1.0",
"spec": ">=1.1.0 <1.2.0",
"type": "range"
},
"/Users/gerrit/Documents/node.js-Projects/tinkerforge/node_modules/ws"
]
],
"_from": "ultron@>=1.1.0 <1.2.0",
"_id": "ultron@1.1.0",
"_inCache": true,
"_location": "/ultron",
"_nodeVersion": "6.2.1",
"_npmOperationalInternal": {
"host": "packages-12-west.internal.npmjs.com",
"tmp": "tmp/ultron-1.1.0.tgz_1483969751660_0.8877595944795758"
},
"_npmUser": {
"name": "3rdeden",
"email": "npm@3rd-Eden.com"
},
"_npmVersion": "3.9.3",
"_phantomChildren": {},
"_requested": {
"raw": "ultron@~1.1.0",
"scope": null,
"escapedName": "ultron",
"name": "ultron",
"rawSpec": "~1.1.0",
"spec": ">=1.1.0 <1.2.0",
"type": "range"
},
"_requiredBy": [
"/ws"
],
"_resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.0.tgz",
"_shasum": "b07a2e6a541a815fc6a34ccd4533baec307ca864",
"_shrinkwrap": null,
"_spec": "ultron@~1.1.0",
"_where": "/Users/gerrit/Documents/node.js-Projects/tinkerforge/node_modules/ws",
"author": {
"name": "Arnout Kazemier"
},
"bugs": {
"url": "https://github.com/unshiftio/ultron/issues"
},
"dependencies": {},
"description": "Ultron is high-intelligence robot. It gathers intel so it can start improving upon his rudimentary design",
"devDependencies": {
"assume": "1.4.x",
"eventemitter3": "2.0.x",
"istanbul": "0.4.x",
"mocha": "~3.2.0",
"pre-commit": "~1.2.0"
},
"directories": {},
"dist": {
"shasum": "b07a2e6a541a815fc6a34ccd4533baec307ca864",
"tarball": "https://registry.npmjs.org/ultron/-/ultron-1.1.0.tgz"
},
"gitHead": "6eb97b74402978aebda4a9d497cb6243ec80c9f1",
"homepage": "https://github.com/unshiftio/ultron",
"keywords": [
"Ultron",
"robot",
"gather",
"intelligence",
"event",
"events",
"eventemitter",
"emitter",
"cleanup"
],
"license": "MIT",
"main": "index.js",
"maintainers": [
{
"name": "unshift",
"email": "npm@unshift.io"
},
{
"name": "v1",
"email": "info@3rd-Eden.com"
},
{
"name": "3rdeden",
"email": "npm@3rd-Eden.com"
}
],
"name": "ultron",
"optionalDependencies": {},
"readme": "ERROR: No README data found!",
"repository": {
"type": "git",
"url": "git+https://github.com/unshiftio/ultron.git"
},
"scripts": {
"100%": "istanbul check-coverage --statements 100 --functions 100 --lines 100 --branches 100",
"coverage": "istanbul cover _mocha -- test.js",
"test": "mocha test.js",
"test-travis": "istanbul cover _mocha --report lcovonly -- test.js",
"watch": "mocha --watch test.js"
},
"version": "1.1.0"
}

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@ -1,6 +1,6 @@
The MIT License (MIT)
Copyright (c) 2014 Guilherme Souza
Copyright (c) 2011 Einar Otto Stangvik <einaros@gmail.com>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal

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# ws: a Node.js WebSocket library
[![Version npm](https://img.shields.io/npm/v/ws.svg)](https://www.npmjs.com/package/ws)
[![Linux Build](https://img.shields.io/travis/websockets/ws/master.svg)](https://travis-ci.org/websockets/ws)
[![Windows Build](https://ci.appveyor.com/api/projects/status/github/websockets/ws?branch=master&svg=true)](https://ci.appveyor.com/project/lpinca/ws)
[![Coverage Status](https://img.shields.io/coveralls/websockets/ws/master.svg)](https://coveralls.io/r/websockets/ws?branch=master)
`ws` is a simple to use, blazing fast, and thoroughly tested WebSocket client
and server implementation.
Passes the quite extensive Autobahn test suite. See http://websockets.github.io/ws/
for the full reports.
**Note**: This module does not work in the browser. The client in the docs is a
reference to a back end with the role of a client in the WebSocket
communication. Browser clients must use the native
[`WebSocket`](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket) object.
## Protocol support
* **HyBi drafts 07-12** (Use the option `protocolVersion: 8`)
* **HyBi drafts 13-17** (Current default, alternatively option `protocolVersion: 13`)
## Installing
```
npm install --save ws
```
### Opt-in for performance and spec compliance
There are 2 optional modules that can be installed along side with the `ws`
module. These modules are binary addons which improve certain operations.
Prebuilt binaries are available for the most popular platforms so you don't
necessarily need to have a C++ compiler installed on your machine.
- `npm install --save-optional bufferutil`: Allows to efficiently perform
operations such as masking and unmasking the data payload of the WebSocket
frames.
- `npm install --save-optional utf-8-validate`: Allows to efficiently check
if a message contains valid UTF-8 as required by the spec.
## API Docs
See [`/doc/ws.md`](https://github.com/websockets/ws/blob/master/doc/ws.md)
for Node.js-like docs for the ws classes.
## WebSocket compression
`ws` supports the [permessage-deflate extension][permessage-deflate] which
enables the client and server to negotiate a compression algorithm and its
parameters, and then selectively apply it to the data payloads of each
WebSocket message.
The extension is enabled by default but adds a significant overhead in terms of
performance and memory comsumption. We suggest to use WebSocket compression
only if it is really needed.
To disable the extension you can set the `perMessageDeflate` option to `false`.
On the server:
```js
const WebSocket = require('ws');
const wss = new WebSocket.Server({
perMessageDeflate: false,
port: 8080
});
```
On the client:
```js
const WebSocket = require('ws');
const ws = new WebSocket('ws://www.host.com/path', {
perMessageDeflate: false
});
```
## Usage examples
### Sending and receiving text data
```js
const WebSocket = require('ws');
const ws = new WebSocket('ws://www.host.com/path');
ws.on('open', function open() {
ws.send('something');
});
ws.on('message', function incoming(data, flags) {
// flags.binary will be set if a binary data is received.
// flags.masked will be set if the data was masked.
});
```
### Sending binary data
```js
const WebSocket = require('ws');
const ws = new WebSocket('ws://www.host.com/path');
ws.on('open', function open() {
const array = new Float32Array(5);
for (var i = 0; i < array.length; ++i) {
array[i] = i / 2;
}
ws.send(array);
});
```
### Server example
```js
const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 8080 });
wss.on('connection', function connection(ws) {
ws.on('message', function incoming(message) {
console.log('received: %s', message);
});
ws.send('something');
});
```
### Broadcast example
```js
const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 8080 });
// Broadcast to all.
wss.broadcast = function broadcast(data) {
wss.clients.forEach(function each(client) {
if (client.readyState === WebSocket.OPEN) {
client.send(data);
}
});
};
wss.on('connection', function connection(ws) {
ws.on('message', function incoming(data) {
// Broadcast to everyone else.
wss.clients.forEach(function each(client) {
if (client !== ws && client.readyState === WebSocket.OPEN) {
client.send(data);
}
});
});
});
```
### ExpressJS example
```js
const express = require('express');
const http = require('http');
const url = require('url');
const WebSocket = require('ws');
const app = express();
app.use(function (req, res) {
res.send({ msg: "hello" });
});
const server = http.createServer(app);
const wss = new WebSocket.Server({ server });
wss.on('connection', function connection(ws) {
const location = url.parse(ws.upgradeReq.url, true);
// You might use location.query.access_token to authenticate or share sessions
// or ws.upgradeReq.headers.cookie (see http://stackoverflow.com/a/16395220/151312)
ws.on('message', function incoming(message) {
console.log('received: %s', message);
});
ws.send('something');
});
server.listen(8080, function listening() {
console.log('Listening on %d', server.address().port);
});
```
### echo.websocket.org demo
```js
const WebSocket = require('ws');
const ws = new WebSocket('wss://echo.websocket.org/', {
origin: 'https://websocket.org'
});
ws.on('open', function open() {
console.log('connected');
ws.send(Date.now());
});
ws.on('close', function close() {
console.log('disconnected');
});
ws.on('message', function incoming(data, flags) {
console.log(`Roundtrip time: ${Date.now() - data} ms`, flags);
setTimeout(function timeout() {
ws.send(Date.now());
}, 500);
});
```
### Other examples
For a full example with a browser client communicating with a ws server, see the
examples folder.
Otherwise, see the test cases.
## Error handling best practices
```js
// If the WebSocket is closed before the following send is attempted
ws.send('something');
// Errors (both immediate and async write errors) can be detected in an optional
// callback. The callback is also the only way of being notified that data has
// actually been sent.
ws.send('something', function ack(error) {
// If error is not defined, the send has been completed, otherwise the error
// object will indicate what failed.
});
// Immediate errors can also be handled with `try...catch`, but **note** that
// since sends are inherently asynchronous, socket write failures will *not* be
// captured when this technique is used.
try { ws.send('something'); }
catch (e) { /* handle error */ }
```
## Changelog
We're using the GitHub [`releases`](https://github.com/websockets/ws/releases)
for changelog entries.
## License
[MIT](LICENSE)
[permessage-deflate]: https://tools.ietf.org/html/rfc7692

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
'use strict';
const WebSocket = require('./lib/WebSocket');
WebSocket.Server = require('./lib/WebSocketServer');
WebSocket.Receiver = require('./lib/Receiver');
WebSocket.Sender = require('./lib/Sender');
module.exports = WebSocket;

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
'use strict';
const safeBuffer = require('safe-buffer');
const Buffer = safeBuffer.Buffer;
/**
* Merges an array of buffers into a new buffer.
*
* @param {Buffer[]} list The array of buffers to concat
* @param {Number} totalLength The total length of buffers in the list
* @return {Buffer} The resulting buffer
* @public
*/
const concat = (list, totalLength) => {
const target = Buffer.allocUnsafe(totalLength);
var offset = 0;
for (var i = 0; i < list.length; i++) {
const buf = list[i];
buf.copy(target, offset);
offset += buf.length;
}
return target;
};
try {
const bufferUtil = require('bufferutil');
module.exports = Object.assign({ concat }, bufferUtil.BufferUtil || bufferUtil);
} catch (e) /* istanbul ignore next */ {
/**
* Masks a buffer using the given mask.
*
* @param {Buffer} source The buffer to mask
* @param {Buffer} mask The mask to use
* @param {Buffer} output The buffer where to store the result
* @param {Number} offset The offset at which to start writing
* @param {Number} length The number of bytes to mask.
* @public
*/
const mask = (source, mask, output, offset, length) => {
for (var i = 0; i < length; i++) {
output[offset + i] = source[i] ^ mask[i & 3];
}
};
/**
* Unmasks a buffer using the given mask.
*
* @param {Buffer} buffer The buffer to unmask
* @param {Buffer} mask The mask to use
* @public
*/
const unmask = (buffer, mask) => {
// Required until https://github.com/nodejs/node/issues/9006 is resolved.
const length = buffer.length;
for (var i = 0; i < length; i++) {
buffer[i] ^= mask[i & 3];
}
};
module.exports = { concat, mask, unmask };
}

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'use strict';
const safeBuffer = require('safe-buffer');
const Buffer = safeBuffer.Buffer;
exports.BINARY_TYPES = ['nodebuffer', 'arraybuffer', 'fragments'];
exports.GUID = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
exports.EMPTY_BUFFER = Buffer.alloc(0);
exports.NOOP = () => {};

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
'use strict';
module.exports = {
isValidErrorCode: function (code) {
return (code >= 1000 && code <= 1013 && code !== 1004 && code !== 1005 && code !== 1006) ||
(code >= 3000 && code <= 4999);
},
1000: 'normal',
1001: 'going away',
1002: 'protocol error',
1003: 'unsupported data',
1004: 'reserved',
1005: 'reserved for extensions',
1006: 'reserved for extensions',
1007: 'inconsistent or invalid data',
1008: 'policy violation',
1009: 'message too big',
1010: 'extension handshake missing',
1011: 'an unexpected condition prevented the request from being fulfilled',
1012: 'service restart',
1013: 'try again later'
};

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'use strict';
/**
* Class representing an event.
*
* @private
*/
class Event {
/**
* Create a new `Event`.
*
* @param {String} type The name of the event
* @param {Object} target A reference to the target to which the event was dispatched
*/
constructor (type, target) {
this.target = target;
this.type = type;
}
}
/**
* Class representing a message event.
*
* @extends Event
* @private
*/
class MessageEvent extends Event {
/**
* Create a new `MessageEvent`.
*
* @param {(String|Buffer|ArrayBuffer|Buffer[])} data The received data
* @param {Boolean} isBinary Specifies if `data` is binary
* @param {WebSocket} target A reference to the target to which the event was dispatched
*/
constructor (data, isBinary, target) {
super('message', target);
this.binary = isBinary; // non-standard.
this.data = data;
}
}
/**
* Class representing a close event.
*
* @extends Event
* @private
*/
class CloseEvent extends Event {
/**
* Create a new `CloseEvent`.
*
* @param {Number} code The status code explaining why the connection is being closed
* @param {String} reason A human-readable string explaining why the connection is closing
* @param {WebSocket} target A reference to the target to which the event was dispatched
*/
constructor (code, reason, target) {
super('close', target);
this.wasClean = code === undefined || code === 1000;
this.reason = reason;
this.target = target;
this.type = 'close';
this.code = code;
}
}
/**
* Class representing an open event.
*
* @extends Event
* @private
*/
class OpenEvent extends Event {
/**
* Create a new `OpenEvent`.
*
* @param {WebSocket} target A reference to the target to which the event was dispatched
*/
constructor (target) {
super('open', target);
}
}
/**
* This provides methods for emulating the `EventTarget` interface. It's not
* meant to be used directly.
*
* @mixin
*/
const EventTarget = {
/**
* Register an event listener.
*
* @param {String} method A string representing the event type to listen for
* @param {Function} listener The listener to add
* @public
*/
addEventListener (method, listener) {
if (typeof listener !== 'function') return;
function onMessage (data, flags) {
listener.call(this, new MessageEvent(data, !!flags.binary, this));
}
function onClose (code, message) {
listener.call(this, new CloseEvent(code, message, this));
}
function onError (event) {
event.type = 'error';
event.target = this;
listener.call(this, event);
}
function onOpen () {
listener.call(this, new OpenEvent(this));
}
if (method === 'message') {
onMessage._listener = listener;
this.on(method, onMessage);
} else if (method === 'close') {
onClose._listener = listener;
this.on(method, onClose);
} else if (method === 'error') {
onError._listener = listener;
this.on(method, onError);
} else if (method === 'open') {
onOpen._listener = listener;
this.on(method, onOpen);
} else {
this.on(method, listener);
}
},
/**
* Remove an event listener.
*
* @param {String} method A string representing the event type to remove
* @param {Function} listener The listener to remove
* @public
*/
removeEventListener (method, listener) {
const listeners = this.listeners(method);
for (var i = 0; i < listeners.length; i++) {
if (listeners[i] === listener || listeners[i]._listener === listener) {
this.removeListener(method, listeners[i]);
}
}
}
};
module.exports = EventTarget;

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'use strict';
/**
* Parse the `Sec-WebSocket-Extensions` header into an object.
*
* @param {String} value field value of the header
* @return {Object} The parsed object
* @public
*/
const parse = (value) => {
value = value || '';
const extensions = {};
value.split(',').forEach((v) => {
const params = v.split(';');
const token = params.shift().trim();
const paramsList = extensions[token] = extensions[token] || [];
const parsedParams = {};
params.forEach((param) => {
const parts = param.trim().split('=');
const key = parts[0];
var value = parts[1];
if (value === undefined) {
value = true;
} else {
// unquote value
if (value[0] === '"') {
value = value.slice(1);
}
if (value[value.length - 1] === '"') {
value = value.slice(0, value.length - 1);
}
}
(parsedParams[key] = parsedParams[key] || []).push(value);
});
paramsList.push(parsedParams);
});
return extensions;
};
/**
* Serialize a parsed `Sec-WebSocket-Extensions` header to a string.
*
* @param {Object} value The object to format
* @return {String} A string representing the given value
* @public
*/
const format = (value) => {
return Object.keys(value).map((token) => {
var paramsList = value[token];
if (!Array.isArray(paramsList)) paramsList = [paramsList];
return paramsList.map((params) => {
return [token].concat(Object.keys(params).map((k) => {
var p = params[k];
if (!Array.isArray(p)) p = [p];
return p.map((v) => v === true ? k : `${k}=${v}`).join('; ');
})).join('; ');
}).join(', ');
}).join(', ');
};
module.exports = { format, parse };

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'use strict';
const safeBuffer = require('safe-buffer');
const zlib = require('zlib');
const bufferUtil = require('./BufferUtil');
const Buffer = safeBuffer.Buffer;
const AVAILABLE_WINDOW_BITS = [8, 9, 10, 11, 12, 13, 14, 15];
const TRAILER = Buffer.from([0x00, 0x00, 0xff, 0xff]);
const EMPTY_BLOCK = Buffer.from([0x00]);
const DEFAULT_WINDOW_BITS = 15;
const DEFAULT_MEM_LEVEL = 8;
/**
* Per-message Deflate implementation.
*/
class PerMessageDeflate {
constructor (options, isServer, maxPayload) {
this._options = options || {};
this._isServer = !!isServer;
this._inflate = null;
this._deflate = null;
this.params = null;
this._maxPayload = maxPayload || 0;
this.threshold = this._options.threshold === undefined ? 1024 : this._options.threshold;
}
static get extensionName () {
return 'permessage-deflate';
}
/**
* Create extension parameters offer.
*
* @return {Object} Extension parameters
* @public
*/
offer () {
const params = {};
if (this._options.serverNoContextTakeover) {
params.server_no_context_takeover = true;
}
if (this._options.clientNoContextTakeover) {
params.client_no_context_takeover = true;
}
if (this._options.serverMaxWindowBits) {
params.server_max_window_bits = this._options.serverMaxWindowBits;
}
if (this._options.clientMaxWindowBits) {
params.client_max_window_bits = this._options.clientMaxWindowBits;
} else if (this._options.clientMaxWindowBits == null) {
params.client_max_window_bits = true;
}
return params;
}
/**
* Accept extension offer.
*
* @param {Array} paramsList Extension parameters
* @return {Object} Accepted configuration
* @public
*/
accept (paramsList) {
paramsList = this.normalizeParams(paramsList);
var params;
if (this._isServer) {
params = this.acceptAsServer(paramsList);
} else {
params = this.acceptAsClient(paramsList);
}
this.params = params;
return params;
}
/**
* Releases all resources used by the extension.
*
* @public
*/
cleanup () {
if (this._inflate) {
if (this._inflate.writeInProgress) {
this._inflate.pendingClose = true;
} else {
this._inflate.close();
this._inflate = null;
}
}
if (this._deflate) {
if (this._deflate.writeInProgress) {
this._deflate.pendingClose = true;
} else {
this._deflate.close();
this._deflate = null;
}
}
}
/**
* Accept extension offer from client.
*
* @param {Array} paramsList Extension parameters
* @return {Object} Accepted configuration
* @private
*/
acceptAsServer (paramsList) {
const accepted = {};
const result = paramsList.some((params) => {
if ((
this._options.serverNoContextTakeover === false &&
params.server_no_context_takeover
) || (
this._options.serverMaxWindowBits === false &&
params.server_max_window_bits
) || (
typeof this._options.serverMaxWindowBits === 'number' &&
typeof params.server_max_window_bits === 'number' &&
this._options.serverMaxWindowBits > params.server_max_window_bits
) || (
typeof this._options.clientMaxWindowBits === 'number' &&
!params.client_max_window_bits
)) {
return;
}
if (
this._options.serverNoContextTakeover ||
params.server_no_context_takeover
) {
accepted.server_no_context_takeover = true;
}
if (this._options.clientNoContextTakeover) {
accepted.client_no_context_takeover = true;
}
if (
this._options.clientNoContextTakeover !== false &&
params.client_no_context_takeover
) {
accepted.client_no_context_takeover = true;
}
if (typeof this._options.serverMaxWindowBits === 'number') {
accepted.server_max_window_bits = this._options.serverMaxWindowBits;
} else if (typeof params.server_max_window_bits === 'number') {
accepted.server_max_window_bits = params.server_max_window_bits;
}
if (typeof this._options.clientMaxWindowBits === 'number') {
accepted.client_max_window_bits = this._options.clientMaxWindowBits;
} else if (
this._options.clientMaxWindowBits !== false &&
typeof params.client_max_window_bits === 'number'
) {
accepted.client_max_window_bits = params.client_max_window_bits;
}
return true;
});
if (!result) throw new Error(`Doesn't support the offered configuration`);
return accepted;
}
/**
* Accept extension response from server.
*
* @param {Array} paramsList Extension parameters
* @return {Object} Accepted configuration
* @private
*/
acceptAsClient (paramsList) {
const params = paramsList[0];
if (this._options.clientNoContextTakeover != null) {
if (
this._options.clientNoContextTakeover === false &&
params.client_no_context_takeover
) {
throw new Error('Invalid value for "client_no_context_takeover"');
}
}
if (this._options.clientMaxWindowBits != null) {
if (
this._options.clientMaxWindowBits === false &&
params.client_max_window_bits
) {
throw new Error('Invalid value for "client_max_window_bits"');
}
if (
typeof this._options.clientMaxWindowBits === 'number' && (
!params.client_max_window_bits ||
params.client_max_window_bits > this._options.clientMaxWindowBits
)) {
throw new Error('Invalid value for "client_max_window_bits"');
}
}
return params;
}
/**
* Normalize extensions parameters.
*
* @param {Array} paramsList Extension parameters
* @return {Array} Normalized extensions parameters
* @private
*/
normalizeParams (paramsList) {
return paramsList.map((params) => {
Object.keys(params).forEach((key) => {
var value = params[key];
if (value.length > 1) {
throw new Error(`Multiple extension parameters for ${key}`);
}
value = value[0];
switch (key) {
case 'server_no_context_takeover':
case 'client_no_context_takeover':
if (value !== true) {
throw new Error(`invalid extension parameter value for ${key} (${value})`);
}
params[key] = true;
break;
case 'server_max_window_bits':
case 'client_max_window_bits':
if (typeof value === 'string') {
value = parseInt(value, 10);
if (!~AVAILABLE_WINDOW_BITS.indexOf(value)) {
throw new Error(`invalid extension parameter value for ${key} (${value})`);
}
}
if (!this._isServer && value === true) {
throw new Error(`Missing extension parameter value for ${key}`);
}
params[key] = value;
break;
default:
throw new Error(`Not defined extension parameter (${key})`);
}
});
return params;
});
}
/**
* Decompress data.
*
* @param {Buffer} data Compressed data
* @param {Boolean} fin Specifies whether or not this is the last fragment
* @param {Function} callback Callback
* @public
*/
decompress (data, fin, callback) {
const endpoint = this._isServer ? 'client' : 'server';
if (!this._inflate) {
const maxWindowBits = this.params[`${endpoint}_max_window_bits`];
this._inflate = zlib.createInflateRaw({
windowBits: typeof maxWindowBits === 'number' ? maxWindowBits : DEFAULT_WINDOW_BITS
});
}
this._inflate.writeInProgress = true;
var totalLength = 0;
const buffers = [];
var err;
const onData = (data) => {
totalLength += data.length;
if (this._maxPayload < 1 || totalLength <= this._maxPayload) {
return buffers.push(data);
}
err = new Error('max payload size exceeded');
err.closeCode = 1009;
this._inflate.reset();
};
const onError = (err) => {
cleanup();
callback(err);
};
const cleanup = () => {
if (!this._inflate) return;
this._inflate.removeListener('error', onError);
this._inflate.removeListener('data', onData);
this._inflate.writeInProgress = false;
if (
(fin && this.params[`${endpoint}_no_context_takeover`]) ||
this._inflate.pendingClose
) {
this._inflate.close();
this._inflate = null;
}
};
this._inflate.on('error', onError).on('data', onData);
this._inflate.write(data);
if (fin) this._inflate.write(TRAILER);
this._inflate.flush(() => {
cleanup();
if (err) callback(err);
else callback(null, bufferUtil.concat(buffers, totalLength));
});
}
/**
* Compress data.
*
* @param {Buffer} data Data to compress
* @param {Boolean} fin Specifies whether or not this is the last fragment
* @param {Function} callback Callback
* @public
*/
compress (data, fin, callback) {
if (!data || data.length === 0) {
process.nextTick(callback, null, EMPTY_BLOCK);
return;
}
const endpoint = this._isServer ? 'server' : 'client';
if (!this._deflate) {
const maxWindowBits = this.params[`${endpoint}_max_window_bits`];
this._deflate = zlib.createDeflateRaw({
flush: zlib.Z_SYNC_FLUSH,
windowBits: typeof maxWindowBits === 'number' ? maxWindowBits : DEFAULT_WINDOW_BITS,
memLevel: this._options.memLevel || DEFAULT_MEM_LEVEL
});
}
this._deflate.writeInProgress = true;
var totalLength = 0;
const buffers = [];
const onData = (data) => {
totalLength += data.length;
buffers.push(data);
};
const onError = (err) => {
cleanup();
callback(err);
};
const cleanup = () => {
if (!this._deflate) return;
this._deflate.removeListener('error', onError);
this._deflate.removeListener('data', onData);
this._deflate.writeInProgress = false;
if (
(fin && this.params[`${endpoint}_no_context_takeover`]) ||
this._deflate.pendingClose
) {
this._deflate.close();
this._deflate = null;
}
};
this._deflate.on('error', onError).on('data', onData);
this._deflate.write(data);
this._deflate.flush(zlib.Z_SYNC_FLUSH, () => {
cleanup();
var data = bufferUtil.concat(buffers, totalLength);
if (fin) data = data.slice(0, data.length - 4);
callback(null, data);
});
}
}
module.exports = PerMessageDeflate;

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
'use strict';
const safeBuffer = require('safe-buffer');
const PerMessageDeflate = require('./PerMessageDeflate');
const isValidUTF8 = require('./Validation');
const bufferUtil = require('./BufferUtil');
const ErrorCodes = require('./ErrorCodes');
const constants = require('./Constants');
const Buffer = safeBuffer.Buffer;
const GET_INFO = 0;
const GET_PAYLOAD_LENGTH_16 = 1;
const GET_PAYLOAD_LENGTH_64 = 2;
const GET_MASK = 3;
const GET_DATA = 4;
const INFLATING = 5;
/**
* HyBi Receiver implementation.
*/
class Receiver {
/**
* Creates a Receiver instance.
*
* @param {Object} extensions An object containing the negotiated extensions
* @param {Number} maxPayload The maximum allowed message length
* @param {String} binaryType The type for binary data
*/
constructor (extensions, maxPayload, binaryType) {
this.binaryType = binaryType || constants.BINARY_TYPES[0];
this.extensions = extensions || {};
this.maxPayload = maxPayload | 0;
this.bufferedBytes = 0;
this.buffers = [];
this.compressed = false;
this.payloadLength = 0;
this.fragmented = 0;
this.masked = false;
this.fin = false;
this.mask = null;
this.opcode = 0;
this.totalPayloadLength = 0;
this.messageLength = 0;
this.fragments = [];
this.cleanupCallback = null;
this.hadError = false;
this.dead = false;
this.loop = false;
this.onmessage = null;
this.onclose = null;
this.onerror = null;
this.onping = null;
this.onpong = null;
this.state = GET_INFO;
}
/**
* Consumes bytes from the available buffered data.
*
* @param {Number} bytes The number of bytes to consume
* @return {Buffer} Consumed bytes
* @private
*/
readBuffer (bytes) {
var offset = 0;
var dst;
var l;
this.bufferedBytes -= bytes;
if (bytes === this.buffers[0].length) return this.buffers.shift();
if (bytes < this.buffers[0].length) {
dst = this.buffers[0].slice(0, bytes);
this.buffers[0] = this.buffers[0].slice(bytes);
return dst;
}
dst = Buffer.allocUnsafe(bytes);
while (bytes > 0) {
l = this.buffers[0].length;
if (bytes >= l) {
this.buffers[0].copy(dst, offset);
offset += l;
this.buffers.shift();
} else {
this.buffers[0].copy(dst, offset, 0, bytes);
this.buffers[0] = this.buffers[0].slice(bytes);
}
bytes -= l;
}
return dst;
}
/**
* Checks if the number of buffered bytes is bigger or equal than `n` and
* calls `cleanup` if necessary.
*
* @param {Number} n The number of bytes to check against
* @return {Boolean} `true` if `bufferedBytes >= n`, else `false`
* @private
*/
hasBufferedBytes (n) {
if (this.bufferedBytes >= n) return true;
this.loop = false;
if (this.dead) this.cleanup(this.cleanupCallback);
return false;
}
/**
* Adds new data to the parser.
*
* @public
*/
add (data) {
if (this.dead) return;
this.bufferedBytes += data.length;
this.buffers.push(data);
this.startLoop();
}
/**
* Starts the parsing loop.
*
* @private
*/
startLoop () {
this.loop = true;
while (this.loop) {
switch (this.state) {
case GET_INFO:
this.getInfo();
break;
case GET_PAYLOAD_LENGTH_16:
this.getPayloadLength16();
break;
case GET_PAYLOAD_LENGTH_64:
this.getPayloadLength64();
break;
case GET_MASK:
this.getMask();
break;
case GET_DATA:
this.getData();
break;
default: // `INFLATING`
this.loop = false;
}
}
}
/**
* Reads the first two bytes of a frame.
*
* @private
*/
getInfo () {
if (!this.hasBufferedBytes(2)) return;
const buf = this.readBuffer(2);
if ((buf[0] & 0x30) !== 0x00) {
this.error(new Error('RSV2 and RSV3 must be clear'), 1002);
return;
}
const compressed = (buf[0] & 0x40) === 0x40;
if (compressed && !this.extensions[PerMessageDeflate.extensionName]) {
this.error(new Error('RSV1 must be clear'), 1002);
return;
}
this.fin = (buf[0] & 0x80) === 0x80;
this.opcode = buf[0] & 0x0f;
this.payloadLength = buf[1] & 0x7f;
if (this.opcode === 0x00) {
if (compressed) {
this.error(new Error('RSV1 must be clear'), 1002);
return;
}
if (!this.fragmented) {
this.error(new Error(`invalid opcode: ${this.opcode}`), 1002);
return;
} else {
this.opcode = this.fragmented;
}
} else if (this.opcode === 0x01 || this.opcode === 0x02) {
if (this.fragmented) {
this.error(new Error(`invalid opcode: ${this.opcode}`), 1002);
return;
}
this.compressed = compressed;
} else if (this.opcode > 0x07 && this.opcode < 0x0b) {
if (!this.fin) {
this.error(new Error('FIN must be set'), 1002);
return;
}
if (compressed) {
this.error(new Error('RSV1 must be clear'), 1002);
return;
}
if (this.payloadLength > 0x7d) {
this.error(new Error('invalid payload length'), 1002);
return;
}
} else {
this.error(new Error(`invalid opcode: ${this.opcode}`), 1002);
return;
}
if (!this.fin && !this.fragmented) this.fragmented = this.opcode;
this.masked = (buf[1] & 0x80) === 0x80;
if (this.payloadLength === 126) this.state = GET_PAYLOAD_LENGTH_16;
else if (this.payloadLength === 127) this.state = GET_PAYLOAD_LENGTH_64;
else this.haveLength();
}
/**
* Gets extended payload length (7+16).
*
* @private
*/
getPayloadLength16 () {
if (!this.hasBufferedBytes(2)) return;
this.payloadLength = this.readBuffer(2).readUInt16BE(0, true);
this.haveLength();
}
/**
* Gets extended payload length (7+64).
*
* @private
*/
getPayloadLength64 () {
if (!this.hasBufferedBytes(8)) return;
const buf = this.readBuffer(8);
const num = buf.readUInt32BE(0, true);
//
// The maximum safe integer in JavaScript is 2^53 - 1. An error is returned
// if payload length is greater than this number.
//
if (num > Math.pow(2, 53 - 32) - 1) {
this.error(new Error('max payload size exceeded'), 1009);
return;
}
this.payloadLength = (num * Math.pow(2, 32)) + buf.readUInt32BE(4, true);
this.haveLength();
}
/**
* Payload length has been read.
*
* @private
*/
haveLength () {
if (this.opcode < 0x08 && this.maxPayloadExceeded(this.payloadLength)) {
return;
}
if (this.masked) this.state = GET_MASK;
else this.state = GET_DATA;
}
/**
* Reads mask bytes.
*
* @private
*/
getMask () {
if (!this.hasBufferedBytes(4)) return;
this.mask = this.readBuffer(4);
this.state = GET_DATA;
}
/**
* Reads data bytes.
*
* @private
*/
getData () {
var data = constants.EMPTY_BUFFER;
if (this.payloadLength) {
if (!this.hasBufferedBytes(this.payloadLength)) return;
data = this.readBuffer(this.payloadLength);
if (this.masked) bufferUtil.unmask(data, this.mask);
}
if (this.opcode > 0x07) {
this.controlMessage(data);
} else if (this.compressed) {
this.state = INFLATING;
this.decompress(data);
} else if (this.pushFragment(data)) {
this.dataMessage();
}
}
/**
* Decompresses data.
*
* @param {Buffer} data Compressed data
* @private
*/
decompress (data) {
const extension = this.extensions[PerMessageDeflate.extensionName];
extension.decompress(data, this.fin, (err, buf) => {
if (err) {
this.error(err, err.closeCode === 1009 ? 1009 : 1007);
return;
}
if (this.pushFragment(buf)) this.dataMessage();
this.startLoop();
});
}
/**
* Handles a data message.
*
* @private
*/
dataMessage () {
if (this.fin) {
const messageLength = this.messageLength;
const fragments = this.fragments;
this.totalPayloadLength = 0;
this.messageLength = 0;
this.fragmented = 0;
this.fragments = [];
if (this.opcode === 2) {
var data;
if (this.binaryType === 'nodebuffer') {
data = toBuffer(fragments, messageLength);
} else if (this.binaryType === 'arraybuffer') {
data = toArrayBuffer(toBuffer(fragments, messageLength));
} else {
data = fragments;
}
this.onmessage(data, { masked: this.masked, binary: true });
} else {
const buf = toBuffer(fragments, messageLength);
if (!isValidUTF8(buf)) {
this.error(new Error('invalid utf8 sequence'), 1007);
return;
}
this.onmessage(buf.toString(), { masked: this.masked });
}
}
this.state = GET_INFO;
}
/**
* Handles a control message.
*
* @param {Buffer} data Data to handle
* @private
*/
controlMessage (data) {
if (this.opcode === 0x08) {
if (data.length === 0) {
this.onclose(1000, '', { masked: this.masked });
this.loop = false;
this.cleanup(this.cleanupCallback);
} else if (data.length === 1) {
this.error(new Error('invalid payload length'), 1002);
} else {
const code = data.readUInt16BE(0, true);
if (!ErrorCodes.isValidErrorCode(code)) {
this.error(new Error(`invalid status code: ${code}`), 1002);
return;
}
const buf = data.slice(2);
if (!isValidUTF8(buf)) {
this.error(new Error('invalid utf8 sequence'), 1007);
return;
}
this.onclose(code, buf.toString(), { masked: this.masked });
this.loop = false;
this.cleanup(this.cleanupCallback);
}
return;
}
const flags = { masked: this.masked, binary: true };
if (this.opcode === 0x09) this.onping(data, flags);
else this.onpong(data, flags);
this.state = GET_INFO;
}
/**
* Handles an error.
*
* @param {Error} err The error
* @param {Number} code Close code
* @private
*/
error (err, code) {
this.onerror(err, code);
this.hadError = true;
this.loop = false;
this.cleanup(this.cleanupCallback);
}
/**
* Checks payload size, disconnects socket when it exceeds `maxPayload`.
*
* @param {Number} length Payload length
* @private
*/
maxPayloadExceeded (length) {
if (length === 0 || this.maxPayload < 1) return false;
const fullLength = this.totalPayloadLength + length;
if (fullLength <= this.maxPayload) {
this.totalPayloadLength = fullLength;
return false;
}
this.error(new Error('max payload size exceeded'), 1009);
return true;
}
/**
* Appends a fragment in the fragments array after checking that the sum of
* fragment lengths does not exceed `maxPayload`.
*
* @param {Buffer} fragment The fragment to add
* @return {Boolean} `true` if `maxPayload` is not exceeded, else `false`
* @private
*/
pushFragment (fragment) {
if (fragment.length === 0) return true;
const totalLength = this.messageLength + fragment.length;
if (this.maxPayload < 1 || totalLength <= this.maxPayload) {
this.messageLength = totalLength;
this.fragments.push(fragment);
return true;
}
this.error(new Error('max payload size exceeded'), 1009);
return false;
}
/**
* Releases resources used by the receiver.
*
* @param {Function} cb Callback
* @public
*/
cleanup (cb) {
this.dead = true;
if (!this.hadError && (this.loop || this.state === INFLATING)) {
this.cleanupCallback = cb;
} else {
this.extensions = null;
this.fragments = null;
this.buffers = null;
this.mask = null;
this.cleanupCallback = null;
this.onmessage = null;
this.onclose = null;
this.onerror = null;
this.onping = null;
this.onpong = null;
if (cb) cb();
}
}
}
module.exports = Receiver;
/**
* Makes a buffer from a list of fragments.
*
* @param {Buffer[]} fragments The list of fragments composing the message
* @param {Number} messageLength The length of the message
* @return {Buffer}
* @private
*/
function toBuffer (fragments, messageLength) {
if (fragments.length === 1) return fragments[0];
if (fragments.length > 1) return bufferUtil.concat(fragments, messageLength);
return constants.EMPTY_BUFFER;
}
/**
* Converts a buffer to an `ArrayBuffer`.
*
* @param {Buffer} The buffer to convert
* @return {ArrayBuffer} Converted buffer
*/
function toArrayBuffer (buf) {
if (buf.byteOffset === 0 && buf.byteLength === buf.buffer.byteLength) {
return buf.buffer;
}
return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
}

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
'use strict';
const safeBuffer = require('safe-buffer');
const crypto = require('crypto');
const PerMessageDeflate = require('./PerMessageDeflate');
const bufferUtil = require('./BufferUtil');
const ErrorCodes = require('./ErrorCodes');
const Buffer = safeBuffer.Buffer;
/**
* HyBi Sender implementation.
*/
class Sender {
/**
* Creates a Sender instance.
*
* @param {net.Socket} socket The connection socket
* @param {Object} extensions An object containing the negotiated extensions
*/
constructor (socket, extensions) {
this.perMessageDeflate = (extensions || {})[PerMessageDeflate.extensionName];
this._socket = socket;
this.firstFragment = true;
this.compress = false;
this.bufferedBytes = 0;
this.deflating = false;
this.queue = [];
this.onerror = null;
}
/**
* Frames a piece of data according to the HyBi WebSocket protocol.
*
* @param {Buffer} data The data to frame
* @param {Object} options Options object
* @param {Number} options.opcode The opcode
* @param {Boolean} options.readOnly Specifies whether `data` can be modified
* @param {Boolean} options.fin Specifies whether or not to set the FIN bit
* @param {Boolean} options.mask Specifies whether or not to mask `data`
* @param {Boolean} options.rsv1 Specifies whether or not to set the RSV1 bit
* @return {Buffer[]} The framed data as a list of `Buffer` instances
* @public
*/
static frame (data, options) {
const merge = data.length < 1024 || (options.mask && options.readOnly);
var offset = options.mask ? 6 : 2;
var payloadLength = data.length;
if (data.length >= 65536) {
offset += 8;
payloadLength = 127;
} else if (data.length > 125) {
offset += 2;
payloadLength = 126;
}
const target = Buffer.allocUnsafe(merge ? data.length + offset : offset);
target[0] = options.fin ? options.opcode | 0x80 : options.opcode;
if (options.rsv1) target[0] |= 0x40;
if (payloadLength === 126) {
target.writeUInt16BE(data.length, 2, true);
} else if (payloadLength === 127) {
target.writeUInt32BE(0, 2, true);
target.writeUInt32BE(data.length, 6, true);
}
if (!options.mask) {
target[1] = payloadLength;
if (merge) {
data.copy(target, offset);
return [target];
}
return [target, data];
}
const mask = crypto.randomBytes(4);
target[1] = payloadLength | 0x80;
target[offset - 4] = mask[0];
target[offset - 3] = mask[1];
target[offset - 2] = mask[2];
target[offset - 1] = mask[3];
if (merge) {
bufferUtil.mask(data, mask, target, offset, data.length);
return [target];
}
bufferUtil.mask(data, mask, data, 0, data.length);
return [target, data];
}
/**
* Sends a close message to the other peer.
*
* @param {(Number|undefined)} code The status code component of the body
* @param {String} data The message component of the body
* @param {Boolean} mask Specifies whether or not to mask the message
* @param {Function} cb Callback
* @public
*/
close (code, data, mask, cb) {
if (code !== undefined && (typeof code !== 'number' || !ErrorCodes.isValidErrorCode(code))) {
throw new Error('first argument must be a valid error code number');
}
const buf = Buffer.allocUnsafe(2 + (data ? Buffer.byteLength(data) : 0));
buf.writeUInt16BE(code || 1000, 0, true);
if (buf.length > 2) buf.write(data, 2);
if (this.deflating) {
this.enqueue([this.doClose, buf, mask, cb]);
} else {
this.doClose(buf, mask, cb);
}
}
/**
* Frames and sends a close message.
*
* @param {Buffer} data The message to send
* @param {Boolean} mask Specifies whether or not to mask `data`
* @param {Function} cb Callback
* @private
*/
doClose (data, mask, cb) {
this.sendFrame(Sender.frame(data, {
fin: true,
rsv1: false,
opcode: 0x08,
mask,
readOnly: false
}), cb);
}
/**
* Sends a ping message to the other peer.
*
* @param {*} data The message to send
* @param {Boolean} mask Specifies whether or not to mask `data`
* @public
*/
ping (data, mask) {
var readOnly = true;
if (!Buffer.isBuffer(data)) {
if (data instanceof ArrayBuffer) {
data = Buffer.from(data);
} else if (ArrayBuffer.isView(data)) {
data = viewToBuffer(data);
} else {
data = Buffer.from(data);
readOnly = false;
}
}
if (this.deflating) {
this.enqueue([this.doPing, data, mask, readOnly]);
} else {
this.doPing(data, mask, readOnly);
}
}
/**
* Frames and sends a ping message.
*
* @param {*} data The message to send
* @param {Boolean} mask Specifies whether or not to mask `data`
* @param {Boolean} readOnly Specifies whether `data` can be modified
* @private
*/
doPing (data, mask, readOnly) {
this.sendFrame(Sender.frame(data, {
fin: true,
rsv1: false,
opcode: 0x09,
mask,
readOnly
}));
}
/**
* Sends a pong message to the other peer.
*
* @param {*} data The message to send
* @param {Boolean} mask Specifies whether or not to mask `data`
* @public
*/
pong (data, mask) {
var readOnly = true;
if (!Buffer.isBuffer(data)) {
if (data instanceof ArrayBuffer) {
data = Buffer.from(data);
} else if (ArrayBuffer.isView(data)) {
data = viewToBuffer(data);
} else {
data = Buffer.from(data);
readOnly = false;
}
}
if (this.deflating) {
this.enqueue([this.doPong, data, mask, readOnly]);
} else {
this.doPong(data, mask, readOnly);
}
}
/**
* Frames and sends a pong message.
*
* @param {*} data The message to send
* @param {Boolean} mask Specifies whether or not to mask `data`
* @param {Boolean} readOnly Specifies whether `data` can be modified
* @private
*/
doPong (data, mask, readOnly) {
this.sendFrame(Sender.frame(data, {
fin: true,
rsv1: false,
opcode: 0x0a,
mask,
readOnly
}));
}
/**
* Sends a data message to the other peer.
*
* @param {*} data The message to send
* @param {Object} options Options object
* @param {Boolean} options.compress Specifies whether or not to compress `data`
* @param {Boolean} options.binary Specifies whether `data` is binary or text
* @param {Boolean} options.fin Specifies whether the fragment is the last one
* @param {Boolean} options.mask Specifies whether or not to mask `data`
* @param {Function} cb Callback
* @public
*/
send (data, options, cb) {
var opcode = options.binary ? 2 : 1;
var rsv1 = options.compress;
var readOnly = true;
if (!Buffer.isBuffer(data)) {
if (data instanceof ArrayBuffer) {
data = Buffer.from(data);
} else if (ArrayBuffer.isView(data)) {
data = viewToBuffer(data);
} else {
data = Buffer.from(data);
readOnly = false;
}
}
if (this.firstFragment) {
this.firstFragment = false;
if (rsv1 && this.perMessageDeflate) {
rsv1 = data.length >= this.perMessageDeflate.threshold;
}
this.compress = rsv1;
} else {
rsv1 = false;
opcode = 0;
}
if (options.fin) this.firstFragment = true;
if (this.perMessageDeflate) {
const opts = {
fin: options.fin,
rsv1,
opcode,
mask: options.mask,
readOnly
};
if (this.deflating) {
this.enqueue([this.dispatch, data, this.compress, opts, cb]);
} else {
this.dispatch(data, this.compress, opts, cb);
}
} else {
this.sendFrame(Sender.frame(data, {
fin: options.fin,
rsv1: false,
opcode,
mask: options.mask,
readOnly
}), cb);
}
}
/**
* Dispatches a data message.
*
* @param {Buffer} data The message to send
* @param {Boolean} compress Specifies whether or not to compress `data`
* @param {Object} options Options object
* @param {Number} options.opcode The opcode
* @param {Boolean} options.readOnly Specifies whether `data` can be modified
* @param {Boolean} options.fin Specifies whether or not to set the FIN bit
* @param {Boolean} options.mask Specifies whether or not to mask `data`
* @param {Boolean} options.rsv1 Specifies whether or not to set the RSV1 bit
* @param {Function} cb Callback
* @private
*/
dispatch (data, compress, options, cb) {
if (!compress) {
this.sendFrame(Sender.frame(data, options), cb);
return;
}
this.deflating = true;
this.perMessageDeflate.compress(data, options.fin, (err, buf) => {
if (err) {
if (cb) cb(err);
else this.onerror(err);
return;
}
options.readOnly = false;
this.sendFrame(Sender.frame(buf, options), cb);
this.deflating = false;
this.dequeue();
});
}
/**
* Executes queued send operations.
*
* @private
*/
dequeue () {
while (!this.deflating && this.queue.length) {
const params = this.queue.shift();
this.bufferedBytes -= params[1].length;
params[0].apply(this, params.slice(1));
}
}
/**
* Enqueues a send operation.
*
* @param {Array} params Send operation parameters.
* @private
*/
enqueue (params) {
this.bufferedBytes += params[1].length;
this.queue.push(params);
}
/**
* Sends a frame.
*
* @param {Buffer[]} list The frame to send
* @param {Function} cb Callback
* @private
*/
sendFrame (list, cb) {
if (list.length === 2) {
this._socket.write(list[0]);
this._socket.write(list[1], cb);
} else {
this._socket.write(list[0], cb);
}
}
}
module.exports = Sender;
/**
* Converts an `ArrayBuffer` view into a buffer.
*
* @param {(DataView|TypedArray)} view The view to convert
* @return {Buffer} Converted view
* @private
*/
function viewToBuffer (view) {
const buf = Buffer.from(view.buffer);
if (view.byteLength !== view.buffer.byteLength) {
return buf.slice(view.byteOffset, view.byteOffset + view.byteLength);
}
return buf;
}

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
'use strict';
try {
const isValidUTF8 = require('utf-8-validate');
module.exports = typeof isValidUTF8 === 'object'
? isValidUTF8.Validation.isValidUTF8 // utf-8-validate@<3.0.0
: isValidUTF8;
} catch (e) /* istanbul ignore next */ {
module.exports = () => true;
}

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
'use strict';
const EventEmitter = require('events');
const crypto = require('crypto');
const Ultron = require('ultron');
const https = require('https');
const http = require('http');
const url = require('url');
const PerMessageDeflate = require('./PerMessageDeflate');
const EventTarget = require('./EventTarget');
const Extensions = require('./Extensions');
const constants = require('./Constants');
const Receiver = require('./Receiver');
const Sender = require('./Sender');
const protocolVersions = [8, 13];
const closeTimeout = 30 * 1000; // Allow 30 seconds to terminate the connection cleanly.
/**
* Class representing a WebSocket.
*
* @extends EventEmitter
*/
class WebSocket extends EventEmitter {
/**
* Create a new `WebSocket`.
*
* @param {String} address The URL to which to connect
* @param {(String|String[])} protocols The subprotocols
* @param {Object} options Connection options
*/
constructor (address, protocols, options) {
super();
if (!protocols) {
protocols = [];
} else if (typeof protocols === 'string') {
protocols = [protocols];
} else if (!Array.isArray(protocols)) {
options = protocols;
protocols = [];
}
this.readyState = WebSocket.CONNECTING;
this.bytesReceived = 0;
this.extensions = {};
this.protocol = '';
this._binaryType = constants.BINARY_TYPES[0];
this._finalize = this.finalize.bind(this);
this._finalizeCalled = false;
this._closeMessage = null;
this._closeTimer = null;
this._closeCode = null;
this._receiver = null;
this._sender = null;
this._socket = null;
this._ultron = null;
if (Array.isArray(address)) {
initAsServerClient.call(this, address[0], address[1], address[2], options);
} else {
initAsClient.call(this, address, protocols, options);
}
}
get CONNECTING () { return WebSocket.CONNECTING; }
get CLOSING () { return WebSocket.CLOSING; }
get CLOSED () { return WebSocket.CLOSED; }
get OPEN () { return WebSocket.OPEN; }
/**
* @type {Number}
*/
get bufferedAmount () {
var amount = 0;
if (this._socket) {
amount = this._socket.bufferSize + this._sender.bufferedBytes;
}
return amount;
}
/**
* This deviates from the WHATWG interface since ws doesn't support the required
* default "blob" type (instead we define a custom "nodebuffer" type).
*
* @type {String}
*/
get binaryType () {
return this._binaryType;
}
set binaryType (type) {
if (constants.BINARY_TYPES.indexOf(type) < 0) return;
this._binaryType = type;
//
// Allow to change `binaryType` on the fly.
//
if (this._receiver) this._receiver.binaryType = type;
}
/**
* Set up the socket and the internal resources.
*
* @param {net.Socket} socket The network socket between the server and client
* @param {Buffer} head The first packet of the upgraded stream
* @private
*/
setSocket (socket, head) {
socket.setTimeout(0);
socket.setNoDelay();
this._receiver = new Receiver(this.extensions, this.maxPayload, this.binaryType);
this._sender = new Sender(socket, this.extensions);
this._ultron = new Ultron(socket);
this._socket = socket;
// socket cleanup handlers
this._ultron.on('close', this._finalize);
this._ultron.on('error', this._finalize);
this._ultron.on('end', this._finalize);
// ensure that the head is added to the receiver
if (head && head.length > 0) {
socket.unshift(head);
head = null;
}
// subsequent packets are pushed to the receiver
this._ultron.on('data', (data) => {
this.bytesReceived += data.length;
this._receiver.add(data);
});
// receiver event handlers
this._receiver.onmessage = (data, flags) => this.emit('message', data, flags);
this._receiver.onping = (data, flags) => {
this.pong(data, !this._isServer, true);
this.emit('ping', data, flags);
};
this._receiver.onpong = (data, flags) => this.emit('pong', data, flags);
this._receiver.onclose = (code, reason) => {
this._closeMessage = reason;
this._closeCode = code;
this.close(code, reason);
};
this._receiver.onerror = (error, code) => {
// close the connection when the receiver reports a HyBi error code
this.close(code, '');
this.emit('error', error);
};
// sender event handlers
this._sender.onerror = (error) => {
this.close(1002, '');
this.emit('error', error);
};
this.readyState = WebSocket.OPEN;
this.emit('open');
}
/**
* Clean up and release internal resources.
*
* @param {(Boolean|Error)} Indicates whether or not an error occurred
* @private
*/
finalize (error) {
if (this._finalizeCalled) return;
this.readyState = WebSocket.CLOSING;
this._finalizeCalled = true;
clearTimeout(this._closeTimer);
this._closeTimer = null;
//
// If the connection was closed abnormally (with an error), or if the close
// control frame was malformed or not received then the close code must be
// 1006.
//
if (error) this._closeCode = 1006;
if (this._socket) {
this._ultron.destroy();
this._socket.on('error', function onerror () {
this.destroy();
});
if (!error) this._socket.end();
else this._socket.destroy();
this._socket = null;
this._ultron = null;
}
if (this._sender) {
this._sender = this._sender.onerror = null;
}
if (this._receiver) {
this._receiver.cleanup(() => this.emitClose());
this._receiver = null;
} else {
this.emitClose();
}
}
/**
* Emit the `close` event.
*
* @private
*/
emitClose () {
this.readyState = WebSocket.CLOSED;
this.emit('close', this._closeCode || 1006, this._closeMessage || '');
if (this.extensions[PerMessageDeflate.extensionName]) {
this.extensions[PerMessageDeflate.extensionName].cleanup();
}
this.extensions = null;
this.removeAllListeners();
this.on('error', constants.NOOP); // Catch all errors after this.
}
/**
* Pause the socket stream.
*
* @public
*/
pause () {
if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
this._socket.pause();
}
/**
* Resume the socket stream
*
* @public
*/
resume () {
if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
this._socket.resume();
}
/**
* Start a closing handshake.
*
* @param {Number} code Status code explaining why the connection is closing
* @param {String} data A string explaining why the connection is closing
* @public
*/
close (code, data) {
if (this.readyState === WebSocket.CLOSED) return;
if (this.readyState === WebSocket.CONNECTING) {
if (this._req && !this._req.aborted) {
this._req.abort();
this.emit('error', new Error('closed before the connection is established'));
this.finalize(true);
}
return;
}
if (this.readyState === WebSocket.CLOSING) {
if (this._closeCode && this._socket) this._socket.end();
return;
}
this.readyState = WebSocket.CLOSING;
this._sender.close(code, data, !this._isServer, (err) => {
if (err) this.emit('error', err);
if (this._socket) {
if (this._closeCode) this._socket.end();
//
// Ensure that the connection is cleaned up even when the closing
// handshake fails.
//
clearTimeout(this._closeTimer);
this._closeTimer = setTimeout(this._finalize, closeTimeout, true);
}
});
}
/**
* Send a ping message.
*
* @param {*} data The message to send
* @param {Boolean} mask Indicates whether or not to mask `data`
* @param {Boolean} failSilently Indicates whether or not to throw if `readyState` isn't `OPEN`
* @public
*/
ping (data, mask, failSilently) {
if (this.readyState !== WebSocket.OPEN) {
if (failSilently) return;
throw new Error('not opened');
}
if (typeof data === 'number') data = data.toString();
if (mask === undefined) mask = !this._isServer;
this._sender.ping(data || constants.EMPTY_BUFFER, mask);
}
/**
* Send a pong message.
*
* @param {*} data The message to send
* @param {Boolean} mask Indicates whether or not to mask `data`
* @param {Boolean} failSilently Indicates whether or not to throw if `readyState` isn't `OPEN`
* @public
*/
pong (data, mask, failSilently) {
if (this.readyState !== WebSocket.OPEN) {
if (failSilently) return;
throw new Error('not opened');
}
if (typeof data === 'number') data = data.toString();
if (mask === undefined) mask = !this._isServer;
this._sender.pong(data || constants.EMPTY_BUFFER, mask);
}
/**
* Send a data message.
*
* @param {*} data The message to send
* @param {Object} options Options object
* @param {Boolean} options.compress Specifies whether or not to compress `data`
* @param {Boolean} options.binary Specifies whether `data` is binary or text
* @param {Boolean} options.fin Specifies whether the fragment is the last one
* @param {Boolean} options.mask Specifies whether or not to mask `data`
* @param {Function} cb Callback which is executed when data is written out
* @public
*/
send (data, options, cb) {
if (typeof options === 'function') {
cb = options;
options = {};
}
if (this.readyState !== WebSocket.OPEN) {
if (cb) cb(new Error('not opened'));
else throw new Error('not opened');
return;
}
if (typeof data === 'number') data = data.toString();
const opts = Object.assign({
binary: typeof data !== 'string',
mask: !this._isServer,
compress: true,
fin: true
}, options);
if (!this.extensions[PerMessageDeflate.extensionName]) {
opts.compress = false;
}
this._sender.send(data || constants.EMPTY_BUFFER, opts, cb);
}
/**
* Forcibly close the connection.
*
* @public
*/
terminate () {
if (this.readyState === WebSocket.CLOSED) return;
if (this.readyState === WebSocket.CONNECTING) {
if (this._req && !this._req.aborted) {
this._req.abort();
this.emit('error', new Error('closed before the connection is established'));
this.finalize(true);
}
return;
}
this.finalize(true);
}
}
WebSocket.CONNECTING = 0;
WebSocket.OPEN = 1;
WebSocket.CLOSING = 2;
WebSocket.CLOSED = 3;
//
// Add the `onopen`, `onerror`, `onclose`, and `onmessage` attributes.
// See https://html.spec.whatwg.org/multipage/comms.html#the-websocket-interface
//
['open', 'error', 'close', 'message'].forEach((method) => {
Object.defineProperty(WebSocket.prototype, `on${method}`, {
/**
* Return the listener of the event.
*
* @return {(Function|undefined)} The event listener or `undefined`
* @public
*/
get () {
const listeners = this.listeners(method);
for (var i = 0; i < listeners.length; i++) {
if (listeners[i]._listener) return listeners[i]._listener;
}
},
/**
* Add a listener for the event.
*
* @param {Function} listener The listener to add
* @public
*/
set (listener) {
const listeners = this.listeners(method);
for (var i = 0; i < listeners.length; i++) {
//
// Remove only the listeners added via `addEventListener`.
//
if (listeners[i]._listener) this.removeListener(method, listeners[i]);
}
this.addEventListener(method, listener);
}
});
});
WebSocket.prototype.addEventListener = EventTarget.addEventListener;
WebSocket.prototype.removeEventListener = EventTarget.removeEventListener;
module.exports = WebSocket;
/**
* Initialize a WebSocket server client.
*
* @param {http.IncomingMessage} req The request object
* @param {net.Socket} socket The network socket between the server and client
* @param {Buffer} head The first packet of the upgraded stream
* @param {Object} options WebSocket attributes
* @param {Number} options.protocolVersion The WebSocket protocol version
* @param {Object} options.extensions The negotiated extensions
* @param {Number} options.maxPayload The maximum allowed message size
* @param {String} options.protocol The chosen subprotocol
* @private
*/
function initAsServerClient (req, socket, head, options) {
this.protocolVersion = options.protocolVersion;
this.extensions = options.extensions;
this.maxPayload = options.maxPayload;
this.protocol = options.protocol;
this.upgradeReq = req;
this._isServer = true;
this.setSocket(socket, head);
}
/**
* Initialize a WebSocket client.
*
* @param {String} address The URL to which to connect
* @param {String[]} protocols The list of subprotocols
* @param {Object} options Connection options
* @param {String} options.protocol Value of the `Sec-WebSocket-Protocol` header
* @param {(Boolean|Object)} options.perMessageDeflate Enable/disable permessage-deflate
* @param {String} options.localAddress Local interface to bind for network connections
* @param {Number} options.protocolVersion Value of the `Sec-WebSocket-Version` header
* @param {Object} options.headers An object containing request headers
* @param {String} options.origin Value of the `Origin` or `Sec-WebSocket-Origin` header
* @param {http.Agent} options.agent Use the specified Agent
* @param {String} options.host Value of the `Host` header
* @param {Number} options.family IP address family to use during hostname lookup (4 or 6).
* @param {Function} options.checkServerIdentity A function to validate the server hostname
* @param {Boolean} options.rejectUnauthorized Verify or not the server certificate
* @param {String} options.passphrase The passphrase for the private key or pfx
* @param {String} options.ciphers The ciphers to use or exclude
* @param {(String|String[]|Buffer|Buffer[])} options.cert The certificate key
* @param {(String|String[]|Buffer|Buffer[])} options.key The private key
* @param {(String|Buffer)} options.pfx The private key, certificate, and CA certs
* @param {(String|String[]|Buffer|Buffer[])} options.ca Trusted certificates
* @private
*/
function initAsClient (address, protocols, options) {
options = Object.assign({
protocolVersion: protocolVersions[1],
protocol: protocols.join(','),
perMessageDeflate: true,
localAddress: null,
headers: null,
family: null,
origin: null,
agent: null,
host: null,
//
// SSL options.
//
checkServerIdentity: null,
rejectUnauthorized: null,
passphrase: null,
ciphers: null,
cert: null,
key: null,
pfx: null,
ca: null
}, options);
if (protocolVersions.indexOf(options.protocolVersion) === -1) {
throw new Error(
`unsupported protocol version: ${options.protocolVersion} ` +
`(supported versions: ${protocolVersions.join(', ')})`
);
}
this.protocolVersion = options.protocolVersion;
this._isServer = false;
this.url = address;
const serverUrl = url.parse(address);
const isUnixSocket = serverUrl.protocol === 'ws+unix:';
if (!serverUrl.host && (!isUnixSocket || !serverUrl.path)) {
throw new Error('invalid url');
}
const isSecure = serverUrl.protocol === 'wss:' || serverUrl.protocol === 'https:';
const key = crypto.randomBytes(16).toString('base64');
const httpObj = isSecure ? https : http;
//
// Prepare extensions.
//
const extensionsOffer = {};
var perMessageDeflate;
if (options.perMessageDeflate) {
perMessageDeflate = new PerMessageDeflate(
options.perMessageDeflate !== true ? options.perMessageDeflate : {},
false
);
extensionsOffer[PerMessageDeflate.extensionName] = perMessageDeflate.offer();
}
const requestOptions = {
port: serverUrl.port || (isSecure ? 443 : 80),
host: serverUrl.hostname,
path: '/',
headers: {
'Sec-WebSocket-Version': options.protocolVersion,
'Sec-WebSocket-Key': key,
'Connection': 'Upgrade',
'Upgrade': 'websocket'
}
};
if (options.headers) Object.assign(requestOptions.headers, options.headers);
if (Object.keys(extensionsOffer).length) {
requestOptions.headers['Sec-WebSocket-Extensions'] = Extensions.format(extensionsOffer);
}
if (options.protocol) {
requestOptions.headers['Sec-WebSocket-Protocol'] = options.protocol;
}
if (options.origin) {
if (options.protocolVersion < 13) {
requestOptions.headers['Sec-WebSocket-Origin'] = options.origin;
} else {
requestOptions.headers.Origin = options.origin;
}
}
if (options.host) requestOptions.headers.Host = options.host;
if (serverUrl.auth) requestOptions.auth = serverUrl.auth;
if (options.localAddress) requestOptions.localAddress = options.localAddress;
if (options.family) requestOptions.family = options.family;
if (isUnixSocket) {
const parts = serverUrl.path.split(':');
requestOptions.socketPath = parts[0];
requestOptions.path = parts[1];
} else if (serverUrl.path) {
//
// Make sure that path starts with `/`.
//
if (serverUrl.path.charAt(0) !== '/') {
requestOptions.path = `/${serverUrl.path}`;
} else {
requestOptions.path = serverUrl.path;
}
}
var agent = options.agent;
//
// A custom agent is required for these options.
//
if (
options.rejectUnauthorized != null ||
options.checkServerIdentity ||
options.passphrase ||
options.ciphers ||
options.cert ||
options.key ||
options.pfx ||
options.ca
) {
if (options.passphrase) requestOptions.passphrase = options.passphrase;
if (options.ciphers) requestOptions.ciphers = options.ciphers;
if (options.cert) requestOptions.cert = options.cert;
if (options.key) requestOptions.key = options.key;
if (options.pfx) requestOptions.pfx = options.pfx;
if (options.ca) requestOptions.ca = options.ca;
if (options.checkServerIdentity) {
requestOptions.checkServerIdentity = options.checkServerIdentity;
}
if (options.rejectUnauthorized != null) {
requestOptions.rejectUnauthorized = options.rejectUnauthorized;
}
if (!agent) agent = new httpObj.Agent(requestOptions);
}
if (agent) requestOptions.agent = agent;
this._req = httpObj.get(requestOptions);
this._req.on('error', (error) => {
if (this._req.aborted) return;
this._req = null;
this.emit('error', error);
this.finalize(true);
});
this._req.on('response', (res) => {
if (!this.emit('unexpected-response', this._req, res)) {
this._req.abort();
this.emit('error', new Error(`unexpected server response (${res.statusCode})`));
this.finalize(true);
}
});
this._req.on('upgrade', (res, socket, head) => {
this.emit('headers', res.headers, res);
//
// The user may have closed the connection from a listener of the `headers`
// event.
//
if (this.readyState !== WebSocket.CONNECTING) return;
this._req = null;
const digest = crypto.createHash('sha1')
.update(key + constants.GUID, 'binary')
.digest('base64');
if (res.headers['sec-websocket-accept'] !== digest) {
socket.destroy();
this.emit('error', new Error('invalid server key'));
return this.finalize(true);
}
const serverProt = res.headers['sec-websocket-protocol'];
const protList = (options.protocol || '').split(/, */);
var protError;
if (!options.protocol && serverProt) {
protError = 'server sent a subprotocol even though none requested';
} else if (options.protocol && !serverProt) {
protError = 'server sent no subprotocol even though requested';
} else if (serverProt && protList.indexOf(serverProt) === -1) {
protError = 'server responded with an invalid protocol';
}
if (protError) {
socket.destroy();
this.emit('error', new Error(protError));
return this.finalize(true);
}
if (serverProt) this.protocol = serverProt;
const serverExtensions = Extensions.parse(res.headers['sec-websocket-extensions']);
if (perMessageDeflate && serverExtensions[PerMessageDeflate.extensionName]) {
try {
perMessageDeflate.accept(serverExtensions[PerMessageDeflate.extensionName]);
} catch (err) {
socket.destroy();
this.emit('error', new Error('invalid extension parameter'));
return this.finalize(true);
}
this.extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
}
this.setSocket(socket, head);
});
}

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
'use strict';
const safeBuffer = require('safe-buffer');
const EventEmitter = require('events');
const crypto = require('crypto');
const Ultron = require('ultron');
const http = require('http');
const url = require('url');
const PerMessageDeflate = require('./PerMessageDeflate');
const Extensions = require('./Extensions');
const constants = require('./Constants');
const WebSocket = require('./WebSocket');
const Buffer = safeBuffer.Buffer;
/**
* Class representing a WebSocket server.
*
* @extends EventEmitter
*/
class WebSocketServer extends EventEmitter {
/**
* Create a `WebSocketServer` instance.
*
* @param {Object} options Configuration options
* @param {String} options.host The hostname where to bind the server
* @param {Number} options.port The port where to bind the server
* @param {http.Server} options.server A pre-created HTTP/S server to use
* @param {Function} options.verifyClient An hook to reject connections
* @param {Function} options.handleProtocols An hook to handle protocols
* @param {String} options.path Accept only connections matching this path
* @param {Boolean} options.noServer Enable no server mode
* @param {Boolean} options.clientTracking Specifies whether or not to track clients
* @param {(Boolean|Object)} options.perMessageDeflate Enable/disable permessage-deflate
* @param {Number} options.maxPayload The maximum allowed message size
* @param {Function} callback A listener for the `listening` event
*/
constructor (options, callback) {
super();
options = Object.assign({
maxPayload: 100 * 1024 * 1024,
perMessageDeflate: true,
handleProtocols: null,
clientTracking: true,
verifyClient: null,
noServer: false,
backlog: null, // use default (511 as implemented in net.js)
server: null,
host: null,
path: null,
port: null
}, options);
if (options.port == null && !options.server && !options.noServer) {
throw new TypeError('missing or invalid options');
}
if (options.port != null) {
this._server = http.createServer((req, res) => {
const body = http.STATUS_CODES[426];
res.writeHead(426, {
'Content-Length': body.length,
'Content-Type': 'text/plain'
});
res.end(body);
});
this._server.allowHalfOpen = false;
this._server.listen(options.port, options.host, options.backlog, callback);
} else if (options.server) {
this._server = options.server;
}
if (this._server) {
this._ultron = new Ultron(this._server);
this._ultron.on('listening', () => this.emit('listening'));
this._ultron.on('error', (err) => this.emit('error', err));
this._ultron.on('upgrade', (req, socket, head) => {
this.handleUpgrade(req, socket, head, (client) => {
this.emit(`connection${req.url}`, client);
this.emit('connection', client);
});
});
}
if (options.clientTracking) this.clients = new Set();
this.options = options;
this.path = options.path;
}
/**
* Close the server.
*
* @param {Function} cb Callback
* @public
*/
close (cb) {
//
// Terminate all associated clients.
//
if (this.clients) {
for (const client of this.clients) client.terminate();
}
const server = this._server;
if (server) {
this._ultron.destroy();
this._ultron = this._server = null;
//
// Close the http server if it was internally created.
//
if (this.options.port != null) return server.close(cb);
}
if (cb) cb();
}
/**
* See if a given request should be handled by this server instance.
*
* @param {http.IncomingMessage} req Request object to inspect
* @return {Boolean} `true` if the request is valid, else `false`
* @public
*/
shouldHandle (req) {
if (this.options.path && url.parse(req.url).pathname !== this.options.path) {
return false;
}
return true;
}
/**
* Handle a HTTP Upgrade request.
*
* @param {http.IncomingMessage} req The request object
* @param {net.Socket} socket The network socket between the server and client
* @param {Buffer} head The first packet of the upgraded stream
* @param {Function} cb Callback
* @public
*/
handleUpgrade (req, socket, head, cb) {
socket.on('error', socketError);
const version = +req.headers['sec-websocket-version'];
if (
req.method !== 'GET' || req.headers.upgrade.toLowerCase() !== 'websocket' ||
!req.headers['sec-websocket-key'] || (version !== 8 && version !== 13) ||
!this.shouldHandle(req)
) {
return abortConnection(socket, 400);
}
var protocol = (req.headers['sec-websocket-protocol'] || '').split(/, */);
//
// Optionally call external protocol selection handler.
//
if (this.options.handleProtocols) {
protocol = this.options.handleProtocols(protocol, req);
if (protocol === false) return abortConnection(socket, 401);
} else {
protocol = protocol[0];
}
//
// Optionally call external client verification handler.
//
if (this.options.verifyClient) {
const info = {
origin: req.headers[`${version === 8 ? 'sec-websocket-origin' : 'origin'}`],
secure: !!(req.connection.authorized || req.connection.encrypted),
req
};
if (this.options.verifyClient.length === 2) {
this.options.verifyClient(info, (verified, code, message) => {
if (!verified) return abortConnection(socket, code || 401, message);
this.completeUpgrade(protocol, version, req, socket, head, cb);
});
return;
} else if (!this.options.verifyClient(info)) {
return abortConnection(socket, 401);
}
}
this.completeUpgrade(protocol, version, req, socket, head, cb);
}
/**
* Upgrade the connection to WebSocket.
*
* @param {String} protocol The chosen subprotocol
* @param {Number} version The WebSocket protocol version
* @param {http.IncomingMessage} req The request object
* @param {net.Socket} socket The network socket between the server and client
* @param {Buffer} head The first packet of the upgraded stream
* @param {Function} cb Callback
* @private
*/
completeUpgrade (protocol, version, req, socket, head, cb) {
//
// Destroy the socket if the client has already sent a FIN packet.
//
if (!socket.readable || !socket.writable) return socket.destroy();
const key = crypto.createHash('sha1')
.update(req.headers['sec-websocket-key'] + constants.GUID, 'binary')
.digest('base64');
const headers = [
'HTTP/1.1 101 Switching Protocols',
'Upgrade: websocket',
'Connection: Upgrade',
`Sec-WebSocket-Accept: ${key}`
];
if (protocol) headers.push(`Sec-WebSocket-Protocol: ${protocol}`);
const offer = Extensions.parse(req.headers['sec-websocket-extensions']);
var extensions;
try {
extensions = acceptExtensions(this.options, offer);
} catch (err) {
return abortConnection(socket, 400);
}
const props = Object.keys(extensions);
if (props.length) {
const serverExtensions = props.reduce((obj, key) => {
obj[key] = [extensions[key].params];
return obj;
}, {});
headers.push(`Sec-WebSocket-Extensions: ${Extensions.format(serverExtensions)}`);
}
//
// Allow external modification/inspection of handshake headers.
//
this.emit('headers', headers, req);
socket.write(headers.concat('', '').join('\r\n'));
const client = new WebSocket([req, socket, head], null, {
maxPayload: this.options.maxPayload,
protocolVersion: version,
extensions,
protocol
});
if (this.clients) {
this.clients.add(client);
client.on('close', () => this.clients.delete(client));
}
socket.removeListener('error', socketError);
cb(client);
}
}
module.exports = WebSocketServer;
/**
* Handle premature socket errors.
*
* @private
*/
function socketError () {
this.destroy();
}
/**
* Accept WebSocket extensions.
*
* @param {Object} options The `WebSocketServer` configuration options
* @param {Object} offer The parsed value of the `sec-websocket-extensions` header
* @return {Object} Accepted extensions
* @private
*/
function acceptExtensions (options, offer) {
const pmd = options.perMessageDeflate;
const extensions = {};
if (pmd && offer[PerMessageDeflate.extensionName]) {
const perMessageDeflate = new PerMessageDeflate(
pmd !== true ? pmd : {},
true,
options.maxPayload
);
perMessageDeflate.accept(offer[PerMessageDeflate.extensionName]);
extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
}
return extensions;
}
/**
* Close the connection when preconditions are not fulfilled.
*
* @param {net.Socket} socket The socket of the upgrade request
* @param {Number} code The HTTP response status code
* @param {String} [message] The HTTP response body
* @private
*/
function abortConnection (socket, code, message) {
if (socket.writable) {
message = message || http.STATUS_CODES[code];
socket.write(
`HTTP/1.1 ${code} ${http.STATUS_CODES[code]}\r\n` +
'Connection: close\r\n' +
'Content-type: text/html\r\n' +
`Content-Length: ${Buffer.byteLength(message)}\r\n` +
'\r\n' +
message
);
}
socket.removeListener('error', socketError);
socket.destroy();
}

126
node_modules/ws/package.json generated vendored Normal file
View File

@ -0,0 +1,126 @@
{
"_args": [
[
{
"raw": "ws@*",
"scope": null,
"escapedName": "ws",
"name": "ws",
"rawSpec": "*",
"spec": "*",
"type": "range"
},
"/Users/gerrit/Documents/node.js-Projects/tinkerforge"
]
],
"_from": "ws@*",
"_id": "ws@2.3.1",
"_inCache": true,
"_location": "/ws",
"_nodeVersion": "7.9.0",
"_npmOperationalInternal": {
"host": "packages-12-west.internal.npmjs.com",
"tmp": "tmp/ws-2.3.1.tgz_1492711201097_0.04034068179316819"
},
"_npmUser": {
"name": "lpinca",
"email": "luigipinca@gmail.com"
},
"_npmVersion": "4.2.0",
"_phantomChildren": {},
"_requested": {
"raw": "ws@*",
"scope": null,
"escapedName": "ws",
"name": "ws",
"rawSpec": "*",
"spec": "*",
"type": "range"
},
"_requiredBy": [
"/"
],
"_resolved": "https://registry.npmjs.org/ws/-/ws-2.3.1.tgz",
"_shasum": "6b94b3e447cb6a363f785eaf94af6359e8e81c80",
"_shrinkwrap": null,
"_spec": "ws@*",
"_where": "/Users/gerrit/Documents/node.js-Projects/tinkerforge",
"author": {
"name": "Einar Otto Stangvik",
"email": "einaros@gmail.com",
"url": "http://2x.io"
},
"bugs": {
"url": "https://github.com/websockets/ws/issues"
},
"dependencies": {
"safe-buffer": "~5.0.1",
"ultron": "~1.1.0"
},
"description": "Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js",
"devDependencies": {
"benchmark": "~2.1.2",
"bufferutil": "~3.0.0",
"eslint": "~3.19.0",
"eslint-config-standard": "~10.2.0",
"eslint-plugin-import": "~2.2.0",
"eslint-plugin-node": "~4.2.0",
"eslint-plugin-promise": "~3.5.0",
"eslint-plugin-standard": "~3.0.0",
"mocha": "~3.2.0",
"nyc": "~10.2.0",
"utf-8-validate": "~3.0.0"
},
"directories": {},
"dist": {
"shasum": "6b94b3e447cb6a363f785eaf94af6359e8e81c80",
"tarball": "https://registry.npmjs.org/ws/-/ws-2.3.1.tgz"
},
"files": [
"index.js",
"lib"
],
"gitHead": "732aaf06b76700f104eeff2740e1896be4e88199",
"homepage": "https://github.com/websockets/ws",
"keywords": [
"HyBi",
"Push",
"RFC-6455",
"WebSocket",
"WebSockets",
"real-time"
],
"license": "MIT",
"main": "index.js",
"maintainers": [
{
"name": "3rdeden",
"email": "npm@3rd-Eden.com"
},
{
"name": "einaros",
"email": "einaros@gmail.com"
},
{
"name": "lpinca",
"email": "luigipinca@gmail.com"
},
{
"name": "v1",
"email": "npm@3rd-Eden.com"
}
],
"name": "ws",
"optionalDependencies": {},
"readme": "ERROR: No README data found!",
"repository": {
"type": "git",
"url": "git+https://github.com/websockets/ws.git"
},
"scripts": {
"integration": "eslint . && mocha test/*.integration.js",
"lint": "eslint .",
"test": "eslint . && nyc --reporter=html --reporter=text mocha test/*.test.js"
},
"version": "2.3.1"
}

2
package.json
View File

@ -10,6 +10,6 @@
"urlencode": "*",
"dateformat": "*",
"byline": "*",
"nodejs-websocket": "*"
"ws": "*"
}
}