mirror of
https://github.com/dawidd6/action-ansible-playbook.git
synced 2024-12-24 13:14:26 +00:00
641 lines
20 KiB
JavaScript
641 lines
20 KiB
JavaScript
'use strict'
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const { webidl } = require('../fetch/webidl')
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const { DOMException } = require('../fetch/constants')
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const { URLSerializer } = require('../fetch/dataURL')
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const { getGlobalOrigin } = require('../fetch/global')
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const { staticPropertyDescriptors, states, opcodes, emptyBuffer } = require('./constants')
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const {
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kWebSocketURL,
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kReadyState,
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kController,
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kBinaryType,
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kResponse,
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kSentClose,
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kByteParser
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} = require('./symbols')
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const { isEstablished, isClosing, isValidSubprotocol, failWebsocketConnection, fireEvent } = require('./util')
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const { establishWebSocketConnection } = require('./connection')
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const { WebsocketFrameSend } = require('./frame')
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const { ByteParser } = require('./receiver')
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const { kEnumerableProperty, isBlobLike } = require('../core/util')
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const { getGlobalDispatcher } = require('../global')
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const { types } = require('util')
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let experimentalWarned = false
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// https://websockets.spec.whatwg.org/#interface-definition
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class WebSocket extends EventTarget {
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#events = {
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open: null,
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error: null,
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close: null,
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message: null
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}
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#bufferedAmount = 0
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#protocol = ''
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#extensions = ''
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/**
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* @param {string} url
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* @param {string|string[]} protocols
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*/
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constructor (url, protocols = []) {
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super()
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webidl.argumentLengthCheck(arguments, 1, { header: 'WebSocket constructor' })
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if (!experimentalWarned) {
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experimentalWarned = true
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process.emitWarning('WebSockets are experimental, expect them to change at any time.', {
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code: 'UNDICI-WS'
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})
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}
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const options = webidl.converters['DOMString or sequence<DOMString> or WebSocketInit'](protocols)
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url = webidl.converters.USVString(url)
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protocols = options.protocols
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// 1. Let baseURL be this's relevant settings object's API base URL.
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const baseURL = getGlobalOrigin()
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// 1. Let urlRecord be the result of applying the URL parser to url with baseURL.
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let urlRecord
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try {
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urlRecord = new URL(url, baseURL)
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} catch (e) {
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// 3. If urlRecord is failure, then throw a "SyntaxError" DOMException.
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throw new DOMException(e, 'SyntaxError')
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}
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// 4. If urlRecord’s scheme is "http", then set urlRecord’s scheme to "ws".
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if (urlRecord.protocol === 'http:') {
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urlRecord.protocol = 'ws:'
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} else if (urlRecord.protocol === 'https:') {
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// 5. Otherwise, if urlRecord’s scheme is "https", set urlRecord’s scheme to "wss".
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urlRecord.protocol = 'wss:'
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}
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// 6. If urlRecord’s scheme is not "ws" or "wss", then throw a "SyntaxError" DOMException.
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if (urlRecord.protocol !== 'ws:' && urlRecord.protocol !== 'wss:') {
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throw new DOMException(
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`Expected a ws: or wss: protocol, got ${urlRecord.protocol}`,
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'SyntaxError'
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)
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}
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// 7. If urlRecord’s fragment is non-null, then throw a "SyntaxError"
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// DOMException.
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if (urlRecord.hash || urlRecord.href.endsWith('#')) {
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throw new DOMException('Got fragment', 'SyntaxError')
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}
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// 8. If protocols is a string, set protocols to a sequence consisting
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// of just that string.
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if (typeof protocols === 'string') {
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protocols = [protocols]
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}
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// 9. If any of the values in protocols occur more than once or otherwise
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// fail to match the requirements for elements that comprise the value
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// of `Sec-WebSocket-Protocol` fields as defined by The WebSocket
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// protocol, then throw a "SyntaxError" DOMException.
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if (protocols.length !== new Set(protocols.map(p => p.toLowerCase())).size) {
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throw new DOMException('Invalid Sec-WebSocket-Protocol value', 'SyntaxError')
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}
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if (protocols.length > 0 && !protocols.every(p => isValidSubprotocol(p))) {
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throw new DOMException('Invalid Sec-WebSocket-Protocol value', 'SyntaxError')
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}
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// 10. Set this's url to urlRecord.
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this[kWebSocketURL] = new URL(urlRecord.href)
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// 11. Let client be this's relevant settings object.
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// 12. Run this step in parallel:
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// 1. Establish a WebSocket connection given urlRecord, protocols,
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// and client.
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this[kController] = establishWebSocketConnection(
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urlRecord,
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protocols,
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this,
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(response) => this.#onConnectionEstablished(response),
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options
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)
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// Each WebSocket object has an associated ready state, which is a
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// number representing the state of the connection. Initially it must
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// be CONNECTING (0).
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this[kReadyState] = WebSocket.CONNECTING
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// The extensions attribute must initially return the empty string.
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// The protocol attribute must initially return the empty string.
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// Each WebSocket object has an associated binary type, which is a
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// BinaryType. Initially it must be "blob".
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this[kBinaryType] = 'blob'
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}
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/**
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* @see https://websockets.spec.whatwg.org/#dom-websocket-close
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* @param {number|undefined} code
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* @param {string|undefined} reason
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*/
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close (code = undefined, reason = undefined) {
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webidl.brandCheck(this, WebSocket)
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if (code !== undefined) {
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code = webidl.converters['unsigned short'](code, { clamp: true })
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}
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if (reason !== undefined) {
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reason = webidl.converters.USVString(reason)
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}
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// 1. If code is present, but is neither an integer equal to 1000 nor an
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// integer in the range 3000 to 4999, inclusive, throw an
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// "InvalidAccessError" DOMException.
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if (code !== undefined) {
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if (code !== 1000 && (code < 3000 || code > 4999)) {
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throw new DOMException('invalid code', 'InvalidAccessError')
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}
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}
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let reasonByteLength = 0
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// 2. If reason is present, then run these substeps:
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if (reason !== undefined) {
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// 1. Let reasonBytes be the result of encoding reason.
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// 2. If reasonBytes is longer than 123 bytes, then throw a
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// "SyntaxError" DOMException.
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reasonByteLength = Buffer.byteLength(reason)
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if (reasonByteLength > 123) {
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throw new DOMException(
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`Reason must be less than 123 bytes; received ${reasonByteLength}`,
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'SyntaxError'
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)
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}
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}
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// 3. Run the first matching steps from the following list:
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if (this[kReadyState] === WebSocket.CLOSING || this[kReadyState] === WebSocket.CLOSED) {
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// If this's ready state is CLOSING (2) or CLOSED (3)
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// Do nothing.
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} else if (!isEstablished(this)) {
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// If the WebSocket connection is not yet established
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// Fail the WebSocket connection and set this's ready state
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// to CLOSING (2).
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failWebsocketConnection(this, 'Connection was closed before it was established.')
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this[kReadyState] = WebSocket.CLOSING
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} else if (!isClosing(this)) {
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// If the WebSocket closing handshake has not yet been started
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// Start the WebSocket closing handshake and set this's ready
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// state to CLOSING (2).
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// - If neither code nor reason is present, the WebSocket Close
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// message must not have a body.
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// - If code is present, then the status code to use in the
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// WebSocket Close message must be the integer given by code.
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// - If reason is also present, then reasonBytes must be
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// provided in the Close message after the status code.
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const frame = new WebsocketFrameSend()
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// If neither code nor reason is present, the WebSocket Close
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// message must not have a body.
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// If code is present, then the status code to use in the
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// WebSocket Close message must be the integer given by code.
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if (code !== undefined && reason === undefined) {
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frame.frameData = Buffer.allocUnsafe(2)
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frame.frameData.writeUInt16BE(code, 0)
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} else if (code !== undefined && reason !== undefined) {
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// If reason is also present, then reasonBytes must be
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// provided in the Close message after the status code.
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frame.frameData = Buffer.allocUnsafe(2 + reasonByteLength)
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frame.frameData.writeUInt16BE(code, 0)
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// the body MAY contain UTF-8-encoded data with value /reason/
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frame.frameData.write(reason, 2, 'utf-8')
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} else {
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frame.frameData = emptyBuffer
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}
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/** @type {import('stream').Duplex} */
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const socket = this[kResponse].socket
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socket.write(frame.createFrame(opcodes.CLOSE), (err) => {
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if (!err) {
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this[kSentClose] = true
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}
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})
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// Upon either sending or receiving a Close control frame, it is said
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// that _The WebSocket Closing Handshake is Started_ and that the
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// WebSocket connection is in the CLOSING state.
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this[kReadyState] = states.CLOSING
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} else {
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// Otherwise
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// Set this's ready state to CLOSING (2).
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this[kReadyState] = WebSocket.CLOSING
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}
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}
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/**
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* @see https://websockets.spec.whatwg.org/#dom-websocket-send
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* @param {NodeJS.TypedArray|ArrayBuffer|Blob|string} data
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*/
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send (data) {
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webidl.brandCheck(this, WebSocket)
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webidl.argumentLengthCheck(arguments, 1, { header: 'WebSocket.send' })
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data = webidl.converters.WebSocketSendData(data)
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// 1. If this's ready state is CONNECTING, then throw an
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// "InvalidStateError" DOMException.
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if (this[kReadyState] === WebSocket.CONNECTING) {
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throw new DOMException('Sent before connected.', 'InvalidStateError')
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}
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// 2. Run the appropriate set of steps from the following list:
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// https://datatracker.ietf.org/doc/html/rfc6455#section-6.1
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// https://datatracker.ietf.org/doc/html/rfc6455#section-5.2
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if (!isEstablished(this) || isClosing(this)) {
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return
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}
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/** @type {import('stream').Duplex} */
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const socket = this[kResponse].socket
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// If data is a string
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if (typeof data === 'string') {
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// If the WebSocket connection is established and the WebSocket
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// closing handshake has not yet started, then the user agent
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// must send a WebSocket Message comprised of the data argument
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// using a text frame opcode; if the data cannot be sent, e.g.
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// because it would need to be buffered but the buffer is full,
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// the user agent must flag the WebSocket as full and then close
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// the WebSocket connection. Any invocation of this method with a
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// string argument that does not throw an exception must increase
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// the bufferedAmount attribute by the number of bytes needed to
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// express the argument as UTF-8.
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const value = Buffer.from(data)
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const frame = new WebsocketFrameSend(value)
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const buffer = frame.createFrame(opcodes.TEXT)
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this.#bufferedAmount += value.byteLength
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socket.write(buffer, () => {
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this.#bufferedAmount -= value.byteLength
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})
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} else if (types.isArrayBuffer(data)) {
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// If the WebSocket connection is established, and the WebSocket
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// closing handshake has not yet started, then the user agent must
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// send a WebSocket Message comprised of data using a binary frame
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// opcode; if the data cannot be sent, e.g. because it would need
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// to be buffered but the buffer is full, the user agent must flag
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// the WebSocket as full and then close the WebSocket connection.
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// The data to be sent is the data stored in the buffer described
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// by the ArrayBuffer object. Any invocation of this method with an
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// ArrayBuffer argument that does not throw an exception must
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// increase the bufferedAmount attribute by the length of the
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// ArrayBuffer in bytes.
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const value = Buffer.from(data)
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const frame = new WebsocketFrameSend(value)
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const buffer = frame.createFrame(opcodes.BINARY)
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this.#bufferedAmount += value.byteLength
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socket.write(buffer, () => {
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this.#bufferedAmount -= value.byteLength
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})
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} else if (ArrayBuffer.isView(data)) {
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// If the WebSocket connection is established, and the WebSocket
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// closing handshake has not yet started, then the user agent must
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// send a WebSocket Message comprised of data using a binary frame
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// opcode; if the data cannot be sent, e.g. because it would need to
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// be buffered but the buffer is full, the user agent must flag the
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// WebSocket as full and then close the WebSocket connection. The
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// data to be sent is the data stored in the section of the buffer
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// described by the ArrayBuffer object that data references. Any
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// invocation of this method with this kind of argument that does
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// not throw an exception must increase the bufferedAmount attribute
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// by the length of data’s buffer in bytes.
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const ab = Buffer.from(data, data.byteOffset, data.byteLength)
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const frame = new WebsocketFrameSend(ab)
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const buffer = frame.createFrame(opcodes.BINARY)
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this.#bufferedAmount += ab.byteLength
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socket.write(buffer, () => {
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this.#bufferedAmount -= ab.byteLength
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})
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} else if (isBlobLike(data)) {
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// If the WebSocket connection is established, and the WebSocket
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// closing handshake has not yet started, then the user agent must
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// send a WebSocket Message comprised of data using a binary frame
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// opcode; if the data cannot be sent, e.g. because it would need to
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// be buffered but the buffer is full, the user agent must flag the
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// WebSocket as full and then close the WebSocket connection. The data
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// to be sent is the raw data represented by the Blob object. Any
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// invocation of this method with a Blob argument that does not throw
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// an exception must increase the bufferedAmount attribute by the size
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// of the Blob object’s raw data, in bytes.
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const frame = new WebsocketFrameSend()
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data.arrayBuffer().then((ab) => {
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const value = Buffer.from(ab)
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frame.frameData = value
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const buffer = frame.createFrame(opcodes.BINARY)
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this.#bufferedAmount += value.byteLength
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socket.write(buffer, () => {
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this.#bufferedAmount -= value.byteLength
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})
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})
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}
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}
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get readyState () {
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webidl.brandCheck(this, WebSocket)
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// The readyState getter steps are to return this's ready state.
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return this[kReadyState]
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}
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get bufferedAmount () {
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webidl.brandCheck(this, WebSocket)
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return this.#bufferedAmount
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}
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get url () {
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webidl.brandCheck(this, WebSocket)
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// The url getter steps are to return this's url, serialized.
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return URLSerializer(this[kWebSocketURL])
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}
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get extensions () {
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webidl.brandCheck(this, WebSocket)
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return this.#extensions
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}
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get protocol () {
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webidl.brandCheck(this, WebSocket)
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return this.#protocol
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}
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get onopen () {
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webidl.brandCheck(this, WebSocket)
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return this.#events.open
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}
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set onopen (fn) {
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webidl.brandCheck(this, WebSocket)
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if (this.#events.open) {
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this.removeEventListener('open', this.#events.open)
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}
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if (typeof fn === 'function') {
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this.#events.open = fn
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this.addEventListener('open', fn)
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} else {
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this.#events.open = null
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}
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}
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get onerror () {
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webidl.brandCheck(this, WebSocket)
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return this.#events.error
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}
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set onerror (fn) {
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webidl.brandCheck(this, WebSocket)
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if (this.#events.error) {
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this.removeEventListener('error', this.#events.error)
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}
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if (typeof fn === 'function') {
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this.#events.error = fn
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this.addEventListener('error', fn)
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} else {
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this.#events.error = null
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}
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}
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get onclose () {
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webidl.brandCheck(this, WebSocket)
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return this.#events.close
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}
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set onclose (fn) {
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webidl.brandCheck(this, WebSocket)
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if (this.#events.close) {
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this.removeEventListener('close', this.#events.close)
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}
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if (typeof fn === 'function') {
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this.#events.close = fn
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this.addEventListener('close', fn)
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} else {
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this.#events.close = null
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}
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}
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get onmessage () {
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webidl.brandCheck(this, WebSocket)
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return this.#events.message
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}
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set onmessage (fn) {
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webidl.brandCheck(this, WebSocket)
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if (this.#events.message) {
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this.removeEventListener('message', this.#events.message)
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}
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if (typeof fn === 'function') {
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this.#events.message = fn
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this.addEventListener('message', fn)
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} else {
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this.#events.message = null
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}
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}
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get binaryType () {
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webidl.brandCheck(this, WebSocket)
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return this[kBinaryType]
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}
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set binaryType (type) {
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webidl.brandCheck(this, WebSocket)
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if (type !== 'blob' && type !== 'arraybuffer') {
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this[kBinaryType] = 'blob'
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} else {
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this[kBinaryType] = type
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}
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}
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/**
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* @see https://websockets.spec.whatwg.org/#feedback-from-the-protocol
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*/
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#onConnectionEstablished (response) {
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// processResponse is called when the "response’s header list has been received and initialized."
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// once this happens, the connection is open
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this[kResponse] = response
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const parser = new ByteParser(this)
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parser.on('drain', function onParserDrain () {
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this.ws[kResponse].socket.resume()
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})
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response.socket.ws = this
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this[kByteParser] = parser
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// 1. Change the ready state to OPEN (1).
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this[kReadyState] = states.OPEN
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// 2. Change the extensions attribute’s value to the extensions in use, if
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// it is not the null value.
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// https://datatracker.ietf.org/doc/html/rfc6455#section-9.1
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const extensions = response.headersList.get('sec-websocket-extensions')
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||
if (extensions !== null) {
|
||
this.#extensions = extensions
|
||
}
|
||
|
||
// 3. Change the protocol attribute’s value to the subprotocol in use, if
|
||
// it is not the null value.
|
||
// https://datatracker.ietf.org/doc/html/rfc6455#section-1.9
|
||
const protocol = response.headersList.get('sec-websocket-protocol')
|
||
|
||
if (protocol !== null) {
|
||
this.#protocol = protocol
|
||
}
|
||
|
||
// 4. Fire an event named open at the WebSocket object.
|
||
fireEvent('open', this)
|
||
}
|
||
}
|
||
|
||
// https://websockets.spec.whatwg.org/#dom-websocket-connecting
|
||
WebSocket.CONNECTING = WebSocket.prototype.CONNECTING = states.CONNECTING
|
||
// https://websockets.spec.whatwg.org/#dom-websocket-open
|
||
WebSocket.OPEN = WebSocket.prototype.OPEN = states.OPEN
|
||
// https://websockets.spec.whatwg.org/#dom-websocket-closing
|
||
WebSocket.CLOSING = WebSocket.prototype.CLOSING = states.CLOSING
|
||
// https://websockets.spec.whatwg.org/#dom-websocket-closed
|
||
WebSocket.CLOSED = WebSocket.prototype.CLOSED = states.CLOSED
|
||
|
||
Object.defineProperties(WebSocket.prototype, {
|
||
CONNECTING: staticPropertyDescriptors,
|
||
OPEN: staticPropertyDescriptors,
|
||
CLOSING: staticPropertyDescriptors,
|
||
CLOSED: staticPropertyDescriptors,
|
||
url: kEnumerableProperty,
|
||
readyState: kEnumerableProperty,
|
||
bufferedAmount: kEnumerableProperty,
|
||
onopen: kEnumerableProperty,
|
||
onerror: kEnumerableProperty,
|
||
onclose: kEnumerableProperty,
|
||
close: kEnumerableProperty,
|
||
onmessage: kEnumerableProperty,
|
||
binaryType: kEnumerableProperty,
|
||
send: kEnumerableProperty,
|
||
extensions: kEnumerableProperty,
|
||
protocol: kEnumerableProperty,
|
||
[Symbol.toStringTag]: {
|
||
value: 'WebSocket',
|
||
writable: false,
|
||
enumerable: false,
|
||
configurable: true
|
||
}
|
||
})
|
||
|
||
Object.defineProperties(WebSocket, {
|
||
CONNECTING: staticPropertyDescriptors,
|
||
OPEN: staticPropertyDescriptors,
|
||
CLOSING: staticPropertyDescriptors,
|
||
CLOSED: staticPropertyDescriptors
|
||
})
|
||
|
||
webidl.converters['sequence<DOMString>'] = webidl.sequenceConverter(
|
||
webidl.converters.DOMString
|
||
)
|
||
|
||
webidl.converters['DOMString or sequence<DOMString>'] = function (V) {
|
||
if (webidl.util.Type(V) === 'Object' && Symbol.iterator in V) {
|
||
return webidl.converters['sequence<DOMString>'](V)
|
||
}
|
||
|
||
return webidl.converters.DOMString(V)
|
||
}
|
||
|
||
// This implements the propsal made in https://github.com/whatwg/websockets/issues/42
|
||
webidl.converters.WebSocketInit = webidl.dictionaryConverter([
|
||
{
|
||
key: 'protocols',
|
||
converter: webidl.converters['DOMString or sequence<DOMString>'],
|
||
get defaultValue () {
|
||
return []
|
||
}
|
||
},
|
||
{
|
||
key: 'dispatcher',
|
||
converter: (V) => V,
|
||
get defaultValue () {
|
||
return getGlobalDispatcher()
|
||
}
|
||
},
|
||
{
|
||
key: 'headers',
|
||
converter: webidl.nullableConverter(webidl.converters.HeadersInit)
|
||
}
|
||
])
|
||
|
||
webidl.converters['DOMString or sequence<DOMString> or WebSocketInit'] = function (V) {
|
||
if (webidl.util.Type(V) === 'Object' && !(Symbol.iterator in V)) {
|
||
return webidl.converters.WebSocketInit(V)
|
||
}
|
||
|
||
return { protocols: webidl.converters['DOMString or sequence<DOMString>'](V) }
|
||
}
|
||
|
||
webidl.converters.WebSocketSendData = function (V) {
|
||
if (webidl.util.Type(V) === 'Object') {
|
||
if (isBlobLike(V)) {
|
||
return webidl.converters.Blob(V, { strict: false })
|
||
}
|
||
|
||
if (ArrayBuffer.isView(V) || types.isAnyArrayBuffer(V)) {
|
||
return webidl.converters.BufferSource(V)
|
||
}
|
||
}
|
||
|
||
return webidl.converters.USVString(V)
|
||
}
|
||
|
||
module.exports = {
|
||
WebSocket
|
||
}
|