diff options
Diffstat (limited to 'g4f/Provider/npm/node_modules/undici/lib/websocket')
8 files changed, 1915 insertions, 0 deletions
diff --git a/g4f/Provider/npm/node_modules/undici/lib/websocket/connection.js b/g4f/Provider/npm/node_modules/undici/lib/websocket/connection.js new file mode 100644 index 00000000..e0fa6972 --- /dev/null +++ b/g4f/Provider/npm/node_modules/undici/lib/websocket/connection.js @@ -0,0 +1,291 @@ +'use strict' + +const diagnosticsChannel = require('diagnostics_channel') +const { uid, states } = require('./constants') +const { + kReadyState, + kSentClose, + kByteParser, + kReceivedClose +} = require('./symbols') +const { fireEvent, failWebsocketConnection } = require('./util') +const { CloseEvent } = require('./events') +const { makeRequest } = require('../fetch/request') +const { fetching } = require('../fetch/index') +const { Headers } = require('../fetch/headers') +const { getGlobalDispatcher } = require('../global') +const { kHeadersList } = require('../core/symbols') + +const channels = {} +channels.open = diagnosticsChannel.channel('undici:websocket:open') +channels.close = diagnosticsChannel.channel('undici:websocket:close') +channels.socketError = diagnosticsChannel.channel('undici:websocket:socket_error') + +/** @type {import('crypto')} */ +let crypto +try { + crypto = require('crypto') +} catch { + +} + +/** + * @see https://websockets.spec.whatwg.org/#concept-websocket-establish + * @param {URL} url + * @param {string|string[]} protocols + * @param {import('./websocket').WebSocket} ws + * @param {(response: any) => void} onEstablish + * @param {Partial<import('../../types/websocket').WebSocketInit>} options + */ +function establishWebSocketConnection (url, protocols, ws, onEstablish, options) { + // 1. Let requestURL be a copy of url, with its scheme set to "http", if url’s + // scheme is "ws", and to "https" otherwise. + const requestURL = url + + requestURL.protocol = url.protocol === 'ws:' ? 'http:' : 'https:' + + // 2. Let request be a new request, whose URL is requestURL, client is client, + // service-workers mode is "none", referrer is "no-referrer", mode is + // "websocket", credentials mode is "include", cache mode is "no-store" , + // and redirect mode is "error". + const request = makeRequest({ + urlList: [requestURL], + serviceWorkers: 'none', + referrer: 'no-referrer', + mode: 'websocket', + credentials: 'include', + cache: 'no-store', + redirect: 'error' + }) + + // Note: undici extension, allow setting custom headers. + if (options.headers) { + const headersList = new Headers(options.headers)[kHeadersList] + + request.headersList = headersList + } + + // 3. Append (`Upgrade`, `websocket`) to request’s header list. + // 4. Append (`Connection`, `Upgrade`) to request’s header list. + // Note: both of these are handled by undici currently. + // https://github.com/nodejs/undici/blob/68c269c4144c446f3f1220951338daef4a6b5ec4/lib/client.js#L1397 + + // 5. Let keyValue be a nonce consisting of a randomly selected + // 16-byte value that has been forgiving-base64-encoded and + // isomorphic encoded. + const keyValue = crypto.randomBytes(16).toString('base64') + + // 6. Append (`Sec-WebSocket-Key`, keyValue) to request’s + // header list. + request.headersList.append('sec-websocket-key', keyValue) + + // 7. Append (`Sec-WebSocket-Version`, `13`) to request’s + // header list. + request.headersList.append('sec-websocket-version', '13') + + // 8. For each protocol in protocols, combine + // (`Sec-WebSocket-Protocol`, protocol) in request’s header + // list. + for (const protocol of protocols) { + request.headersList.append('sec-websocket-protocol', protocol) + } + + // 9. Let permessageDeflate be a user-agent defined + // "permessage-deflate" extension header value. + // https://github.com/mozilla/gecko-dev/blob/ce78234f5e653a5d3916813ff990f053510227bc/netwerk/protocol/websocket/WebSocketChannel.cpp#L2673 + // TODO: enable once permessage-deflate is supported + const permessageDeflate = '' // 'permessage-deflate; 15' + + // 10. Append (`Sec-WebSocket-Extensions`, permessageDeflate) to + // request’s header list. + // request.headersList.append('sec-websocket-extensions', permessageDeflate) + + // 11. Fetch request with useParallelQueue set to true, and + // processResponse given response being these steps: + const controller = fetching({ + request, + useParallelQueue: true, + dispatcher: options.dispatcher ?? getGlobalDispatcher(), + processResponse (response) { + // 1. If response is a network error or its status is not 101, + // fail the WebSocket connection. + if (response.type === 'error' || response.status !== 101) { + failWebsocketConnection(ws, 'Received network error or non-101 status code.') + return + } + + // 2. If protocols is not the empty list and extracting header + // list values given `Sec-WebSocket-Protocol` and response’s + // header list results in null, failure, or the empty byte + // sequence, then fail the WebSocket connection. + if (protocols.length !== 0 && !response.headersList.get('Sec-WebSocket-Protocol')) { + failWebsocketConnection(ws, 'Server did not respond with sent protocols.') + return + } + + // 3. Follow the requirements stated step 2 to step 6, inclusive, + // of the last set of steps in section 4.1 of The WebSocket + // Protocol to validate response. This either results in fail + // the WebSocket connection or the WebSocket connection is + // established. + + // 2. If the response lacks an |Upgrade| header field or the |Upgrade| + // header field contains a value that is not an ASCII case- + // insensitive match for the value "websocket", the client MUST + // _Fail the WebSocket Connection_. + if (response.headersList.get('Upgrade')?.toLowerCase() !== 'websocket') { + failWebsocketConnection(ws, 'Server did not set Upgrade header to "websocket".') + return + } + + // 3. If the response lacks a |Connection| header field or the + // |Connection| header field doesn't contain a token that is an + // ASCII case-insensitive match for the value "Upgrade", the client + // MUST _Fail the WebSocket Connection_. + if (response.headersList.get('Connection')?.toLowerCase() !== 'upgrade') { + failWebsocketConnection(ws, 'Server did not set Connection header to "upgrade".') + return + } + + // 4. If the response lacks a |Sec-WebSocket-Accept| header field or + // the |Sec-WebSocket-Accept| contains a value other than the + // base64-encoded SHA-1 of the concatenation of the |Sec-WebSocket- + // Key| (as a string, not base64-decoded) with the string "258EAFA5- + // E914-47DA-95CA-C5AB0DC85B11" but ignoring any leading and + // trailing whitespace, the client MUST _Fail the WebSocket + // Connection_. + const secWSAccept = response.headersList.get('Sec-WebSocket-Accept') + const digest = crypto.createHash('sha1').update(keyValue + uid).digest('base64') + if (secWSAccept !== digest) { + failWebsocketConnection(ws, 'Incorrect hash received in Sec-WebSocket-Accept header.') + return + } + + // 5. If the response includes a |Sec-WebSocket-Extensions| header + // field and this header field indicates the use of an extension + // that was not present in the client's handshake (the server has + // indicated an extension not requested by the client), the client + // MUST _Fail the WebSocket Connection_. (The parsing of this + // header field to determine which extensions are requested is + // discussed in Section 9.1.) + const secExtension = response.headersList.get('Sec-WebSocket-Extensions') + + if (secExtension !== null && secExtension !== permessageDeflate) { + failWebsocketConnection(ws, 'Received different permessage-deflate than the one set.') + return + } + + // 6. If the response includes a |Sec-WebSocket-Protocol| header field + // and this header field indicates the use of a subprotocol that was + // not present in the client's handshake (the server has indicated a + // subprotocol not requested by the client), the client MUST _Fail + // the WebSocket Connection_. + const secProtocol = response.headersList.get('Sec-WebSocket-Protocol') + + if (secProtocol !== null && secProtocol !== request.headersList.get('Sec-WebSocket-Protocol')) { + failWebsocketConnection(ws, 'Protocol was not set in the opening handshake.') + return + } + + response.socket.on('data', onSocketData) + response.socket.on('close', onSocketClose) + response.socket.on('error', onSocketError) + + if (channels.open.hasSubscribers) { + channels.open.publish({ + address: response.socket.address(), + protocol: secProtocol, + extensions: secExtension + }) + } + + onEstablish(response) + } + }) + + return controller +} + +/** + * @param {Buffer} chunk + */ +function onSocketData (chunk) { + if (!this.ws[kByteParser].write(chunk)) { + this.pause() + } +} + +/** + * @see https://websockets.spec.whatwg.org/#feedback-from-the-protocol + * @see https://datatracker.ietf.org/doc/html/rfc6455#section-7.1.4 + */ +function onSocketClose () { + const { ws } = this + + // If the TCP connection was closed after the + // WebSocket closing handshake was completed, the WebSocket connection + // is said to have been closed _cleanly_. + const wasClean = ws[kSentClose] && ws[kReceivedClose] + + let code = 1005 + let reason = '' + + const result = ws[kByteParser].closingInfo + + if (result) { + code = result.code ?? 1005 + reason = result.reason + } else if (!ws[kSentClose]) { + // If _The WebSocket + // Connection is Closed_ and no Close control frame was received by the + // endpoint (such as could occur if the underlying transport connection + // is lost), _The WebSocket Connection Close Code_ is considered to be + // 1006. + code = 1006 + } + + // 1. Change the ready state to CLOSED (3). + ws[kReadyState] = states.CLOSED + + // 2. If the user agent was required to fail the WebSocket + // connection, or if the WebSocket connection was closed + // after being flagged as full, fire an event named error + // at the WebSocket object. + // TODO + + // 3. Fire an event named close at the WebSocket object, + // using CloseEvent, with the wasClean attribute + // initialized to true if the connection closed cleanly + // and false otherwise, the code attribute initialized to + // the WebSocket connection close code, and the reason + // attribute initialized to the result of applying UTF-8 + // decode without BOM to the WebSocket connection close + // reason. + fireEvent('close', ws, CloseEvent, { + wasClean, code, reason + }) + + if (channels.close.hasSubscribers) { + channels.close.publish({ + websocket: ws, + code, + reason + }) + } +} + +function onSocketError (error) { + const { ws } = this + + ws[kReadyState] = states.CLOSING + + if (channels.socketError.hasSubscribers) { + channels.socketError.publish(error) + } + + this.destroy() +} + +module.exports = { + establishWebSocketConnection +} diff --git a/g4f/Provider/npm/node_modules/undici/lib/websocket/constants.js b/g4f/Provider/npm/node_modules/undici/lib/websocket/constants.js new file mode 100644 index 00000000..406b8e3e --- /dev/null +++ b/g4f/Provider/npm/node_modules/undici/lib/websocket/constants.js @@ -0,0 +1,51 @@ +'use strict' + +// This is a Globally Unique Identifier unique used +// to validate that the endpoint accepts websocket +// connections. +// See https://www.rfc-editor.org/rfc/rfc6455.html#section-1.3 +const uid = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11' + +/** @type {PropertyDescriptor} */ +const staticPropertyDescriptors = { + enumerable: true, + writable: false, + configurable: false +} + +const states = { + CONNECTING: 0, + OPEN: 1, + CLOSING: 2, + CLOSED: 3 +} + +const opcodes = { + CONTINUATION: 0x0, + TEXT: 0x1, + BINARY: 0x2, + CLOSE: 0x8, + PING: 0x9, + PONG: 0xA +} + +const maxUnsigned16Bit = 2 ** 16 - 1 // 65535 + +const parserStates = { + INFO: 0, + PAYLOADLENGTH_16: 2, + PAYLOADLENGTH_64: 3, + READ_DATA: 4 +} + +const emptyBuffer = Buffer.allocUnsafe(0) + +module.exports = { + uid, + staticPropertyDescriptors, + states, + opcodes, + maxUnsigned16Bit, + parserStates, + emptyBuffer +} diff --git a/g4f/Provider/npm/node_modules/undici/lib/websocket/events.js b/g4f/Provider/npm/node_modules/undici/lib/websocket/events.js new file mode 100644 index 00000000..621a2263 --- /dev/null +++ b/g4f/Provider/npm/node_modules/undici/lib/websocket/events.js @@ -0,0 +1,303 @@ +'use strict' + +const { webidl } = require('../fetch/webidl') +const { kEnumerableProperty } = require('../core/util') +const { MessagePort } = require('worker_threads') + +/** + * @see https://html.spec.whatwg.org/multipage/comms.html#messageevent + */ +class MessageEvent extends Event { + #eventInit + + constructor (type, eventInitDict = {}) { + webidl.argumentLengthCheck(arguments, 1, { header: 'MessageEvent constructor' }) + + type = webidl.converters.DOMString(type) + eventInitDict = webidl.converters.MessageEventInit(eventInitDict) + + super(type, eventInitDict) + + this.#eventInit = eventInitDict + } + + get data () { + webidl.brandCheck(this, MessageEvent) + + return this.#eventInit.data + } + + get origin () { + webidl.brandCheck(this, MessageEvent) + + return this.#eventInit.origin + } + + get lastEventId () { + webidl.brandCheck(this, MessageEvent) + + return this.#eventInit.lastEventId + } + + get source () { + webidl.brandCheck(this, MessageEvent) + + return this.#eventInit.source + } + + get ports () { + webidl.brandCheck(this, MessageEvent) + + if (!Object.isFrozen(this.#eventInit.ports)) { + Object.freeze(this.#eventInit.ports) + } + + return this.#eventInit.ports + } + + initMessageEvent ( + type, + bubbles = false, + cancelable = false, + data = null, + origin = '', + lastEventId = '', + source = null, + ports = [] + ) { + webidl.brandCheck(this, MessageEvent) + + webidl.argumentLengthCheck(arguments, 1, { header: 'MessageEvent.initMessageEvent' }) + + return new MessageEvent(type, { + bubbles, cancelable, data, origin, lastEventId, source, ports + }) + } +} + +/** + * @see https://websockets.spec.whatwg.org/#the-closeevent-interface + */ +class CloseEvent extends Event { + #eventInit + + constructor (type, eventInitDict = {}) { + webidl.argumentLengthCheck(arguments, 1, { header: 'CloseEvent constructor' }) + + type = webidl.converters.DOMString(type) + eventInitDict = webidl.converters.CloseEventInit(eventInitDict) + + super(type, eventInitDict) + + this.#eventInit = eventInitDict + } + + get wasClean () { + webidl.brandCheck(this, CloseEvent) + + return this.#eventInit.wasClean + } + + get code () { + webidl.brandCheck(this, CloseEvent) + + return this.#eventInit.code + } + + get reason () { + webidl.brandCheck(this, CloseEvent) + + return this.#eventInit.reason + } +} + +// https://html.spec.whatwg.org/multipage/webappapis.html#the-errorevent-interface +class ErrorEvent extends Event { + #eventInit + + constructor (type, eventInitDict) { + webidl.argumentLengthCheck(arguments, 1, { header: 'ErrorEvent constructor' }) + + super(type, eventInitDict) + + type = webidl.converters.DOMString(type) + eventInitDict = webidl.converters.ErrorEventInit(eventInitDict ?? {}) + + this.#eventInit = eventInitDict + } + + get message () { + webidl.brandCheck(this, ErrorEvent) + + return this.#eventInit.message + } + + get filename () { + webidl.brandCheck(this, ErrorEvent) + + return this.#eventInit.filename + } + + get lineno () { + webidl.brandCheck(this, ErrorEvent) + + return this.#eventInit.lineno + } + + get colno () { + webidl.brandCheck(this, ErrorEvent) + + return this.#eventInit.colno + } + + get error () { + webidl.brandCheck(this, ErrorEvent) + + return this.#eventInit.error + } +} + +Object.defineProperties(MessageEvent.prototype, { + [Symbol.toStringTag]: { + value: 'MessageEvent', + configurable: true + }, + data: kEnumerableProperty, + origin: kEnumerableProperty, + lastEventId: kEnumerableProperty, + source: kEnumerableProperty, + ports: kEnumerableProperty, + initMessageEvent: kEnumerableProperty +}) + +Object.defineProperties(CloseEvent.prototype, { + [Symbol.toStringTag]: { + value: 'CloseEvent', + configurable: true + }, + reason: kEnumerableProperty, + code: kEnumerableProperty, + wasClean: kEnumerableProperty +}) + +Object.defineProperties(ErrorEvent.prototype, { + [Symbol.toStringTag]: { + value: 'ErrorEvent', + configurable: true + }, + message: kEnumerableProperty, + filename: kEnumerableProperty, + lineno: kEnumerableProperty, + colno: kEnumerableProperty, + error: kEnumerableProperty +}) + +webidl.converters.MessagePort = webidl.interfaceConverter(MessagePort) + +webidl.converters['sequence<MessagePort>'] = webidl.sequenceConverter( + webidl.converters.MessagePort +) + +const eventInit = [ + { + key: 'bubbles', + converter: webidl.converters.boolean, + defaultValue: false + }, + { + key: 'cancelable', + converter: webidl.converters.boolean, + defaultValue: false + }, + { + key: 'composed', + converter: webidl.converters.boolean, + defaultValue: false + } +] + +webidl.converters.MessageEventInit = webidl.dictionaryConverter([ + ...eventInit, + { + key: 'data', + converter: webidl.converters.any, + defaultValue: null + }, + { + key: 'origin', + converter: webidl.converters.USVString, + defaultValue: '' + }, + { + key: 'lastEventId', + converter: webidl.converters.DOMString, + defaultValue: '' + }, + { + key: 'source', + // Node doesn't implement WindowProxy or ServiceWorker, so the only + // valid value for source is a MessagePort. + converter: webidl.nullableConverter(webidl.converters.MessagePort), + defaultValue: null + }, + { + key: 'ports', + converter: webidl.converters['sequence<MessagePort>'], + get defaultValue () { + return [] + } + } +]) + +webidl.converters.CloseEventInit = webidl.dictionaryConverter([ + ...eventInit, + { + key: 'wasClean', + converter: webidl.converters.boolean, + defaultValue: false + }, + { + key: 'code', + converter: webidl.converters['unsigned short'], + defaultValue: 0 + }, + { + key: 'reason', + converter: webidl.converters.USVString, + defaultValue: '' + } +]) + +webidl.converters.ErrorEventInit = webidl.dictionaryConverter([ + ...eventInit, + { + key: 'message', + converter: webidl.converters.DOMString, + defaultValue: '' + }, + { + key: 'filename', + converter: webidl.converters.USVString, + defaultValue: '' + }, + { + key: 'lineno', + converter: webidl.converters['unsigned long'], + defaultValue: 0 + }, + { + key: 'colno', + converter: webidl.converters['unsigned long'], + defaultValue: 0 + }, + { + key: 'error', + converter: webidl.converters.any + } +]) + +module.exports = { + MessageEvent, + CloseEvent, + ErrorEvent +} diff --git a/g4f/Provider/npm/node_modules/undici/lib/websocket/frame.js b/g4f/Provider/npm/node_modules/undici/lib/websocket/frame.js new file mode 100644 index 00000000..d867ad11 --- /dev/null +++ b/g4f/Provider/npm/node_modules/undici/lib/websocket/frame.js @@ -0,0 +1,73 @@ +'use strict' + +const { maxUnsigned16Bit } = require('./constants') + +/** @type {import('crypto')} */ +let crypto +try { + crypto = require('crypto') +} catch { + +} + +class WebsocketFrameSend { + /** + * @param {Buffer|undefined} data + */ + constructor (data) { + this.frameData = data + this.maskKey = crypto.randomBytes(4) + } + + createFrame (opcode) { + const bodyLength = this.frameData?.byteLength ?? 0 + + /** @type {number} */ + let payloadLength = bodyLength // 0-125 + let offset = 6 + + if (bodyLength > maxUnsigned16Bit) { + offset += 8 // payload length is next 8 bytes + payloadLength = 127 + } else if (bodyLength > 125) { + offset += 2 // payload length is next 2 bytes + payloadLength = 126 + } + + const buffer = Buffer.allocUnsafe(bodyLength + offset) + + // Clear first 2 bytes, everything else is overwritten + buffer[0] = buffer[1] = 0 + buffer[0] |= 0x80 // FIN + buffer[0] = (buffer[0] & 0xF0) + opcode // opcode + + /*! ws. MIT License. Einar Otto Stangvik <einaros@gmail.com> */ + buffer[offset - 4] = this.maskKey[0] + buffer[offset - 3] = this.maskKey[1] + buffer[offset - 2] = this.maskKey[2] + buffer[offset - 1] = this.maskKey[3] + + buffer[1] = payloadLength + + if (payloadLength === 126) { + buffer.writeUInt16BE(bodyLength, 2) + } else if (payloadLength === 127) { + // Clear extended payload length + buffer[2] = buffer[3] = 0 + buffer.writeUIntBE(bodyLength, 4, 6) + } + + buffer[1] |= 0x80 // MASK + + // mask body + for (let i = 0; i < bodyLength; i++) { + buffer[offset + i] = this.frameData[i] ^ this.maskKey[i % 4] + } + + return buffer + } +} + +module.exports = { + WebsocketFrameSend +} diff --git a/g4f/Provider/npm/node_modules/undici/lib/websocket/receiver.js b/g4f/Provider/npm/node_modules/undici/lib/websocket/receiver.js new file mode 100644 index 00000000..bdd2031b --- /dev/null +++ b/g4f/Provider/npm/node_modules/undici/lib/websocket/receiver.js @@ -0,0 +1,344 @@ +'use strict' + +const { Writable } = require('stream') +const diagnosticsChannel = require('diagnostics_channel') +const { parserStates, opcodes, states, emptyBuffer } = require('./constants') +const { kReadyState, kSentClose, kResponse, kReceivedClose } = require('./symbols') +const { isValidStatusCode, failWebsocketConnection, websocketMessageReceived } = require('./util') +const { WebsocketFrameSend } = require('./frame') + +// This code was influenced by ws released under the MIT license. +// Copyright (c) 2011 Einar Otto Stangvik <einaros@gmail.com> +// Copyright (c) 2013 Arnout Kazemier and contributors +// Copyright (c) 2016 Luigi Pinca and contributors + +const channels = {} +channels.ping = diagnosticsChannel.channel('undici:websocket:ping') +channels.pong = diagnosticsChannel.channel('undici:websocket:pong') + +class ByteParser extends Writable { + #buffers = [] + #byteOffset = 0 + + #state = parserStates.INFO + + #info = {} + #fragments = [] + + constructor (ws) { + super() + + this.ws = ws + } + + /** + * @param {Buffer} chunk + * @param {() => void} callback + */ + _write (chunk, _, callback) { + this.#buffers.push(chunk) + this.#byteOffset += chunk.length + + this.run(callback) + } + + /** + * Runs whenever a new chunk is received. + * Callback is called whenever there are no more chunks buffering, + * or not enough bytes are buffered to parse. + */ + run (callback) { + while (true) { + if (this.#state === parserStates.INFO) { + // If there aren't enough bytes to parse the payload length, etc. + if (this.#byteOffset < 2) { + return callback() + } + + const buffer = this.consume(2) + + this.#info.fin = (buffer[0] & 0x80) !== 0 + this.#info.opcode = buffer[0] & 0x0F + + // If we receive a fragmented message, we use the type of the first + // frame to parse the full message as binary/text, when it's terminated + this.#info.originalOpcode ??= this.#info.opcode + + this.#info.fragmented = !this.#info.fin && this.#info.opcode !== opcodes.CONTINUATION + + if (this.#info.fragmented && this.#info.opcode !== opcodes.BINARY && this.#info.opcode !== opcodes.TEXT) { + // Only text and binary frames can be fragmented + failWebsocketConnection(this.ws, 'Invalid frame type was fragmented.') + return + } + + const payloadLength = buffer[1] & 0x7F + + if (payloadLength <= 125) { + this.#info.payloadLength = payloadLength + this.#state = parserStates.READ_DATA + } else if (payloadLength === 126) { + this.#state = parserStates.PAYLOADLENGTH_16 + } else if (payloadLength === 127) { + this.#state = parserStates.PAYLOADLENGTH_64 + } + + if (this.#info.fragmented && payloadLength > 125) { + // A fragmented frame can't be fragmented itself + failWebsocketConnection(this.ws, 'Fragmented frame exceeded 125 bytes.') + return + } else if ( + (this.#info.opcode === opcodes.PING || + this.#info.opcode === opcodes.PONG || + this.#info.opcode === opcodes.CLOSE) && + payloadLength > 125 + ) { + // Control frames can have a payload length of 125 bytes MAX + failWebsocketConnection(this.ws, 'Payload length for control frame exceeded 125 bytes.') + return + } else if (this.#info.opcode === opcodes.CLOSE) { + if (payloadLength === 1) { + failWebsocketConnection(this.ws, 'Received close frame with a 1-byte body.') + return + } + + const body = this.consume(payloadLength) + + this.#info.closeInfo = this.parseCloseBody(false, body) + + if (!this.ws[kSentClose]) { + // If an endpoint receives a Close frame and did not previously send a + // Close frame, the endpoint MUST send a Close frame in response. (When + // sending a Close frame in response, the endpoint typically echos the + // status code it received.) + const body = Buffer.allocUnsafe(2) + body.writeUInt16BE(this.#info.closeInfo.code, 0) + const closeFrame = new WebsocketFrameSend(body) + + this.ws[kResponse].socket.write( + closeFrame.createFrame(opcodes.CLOSE), + (err) => { + if (!err) { + this.ws[kSentClose] = true + } + } + ) + } + + // Upon either sending or receiving a Close control frame, it is said + // that _The WebSocket Closing Handshake is Started_ and that the + // WebSocket connection is in the CLOSING state. + this.ws[kReadyState] = states.CLOSING + this.ws[kReceivedClose] = true + + this.end() + + return + } else if (this.#info.opcode === opcodes.PING) { + // Upon receipt of a Ping frame, an endpoint MUST send a Pong frame in + // response, unless it already received a Close frame. + // A Pong frame sent in response to a Ping frame must have identical + // "Application data" + + const body = this.consume(payloadLength) + + if (!this.ws[kReceivedClose]) { + const frame = new WebsocketFrameSend(body) + + this.ws[kResponse].socket.write(frame.createFrame(opcodes.PONG)) + + if (channels.ping.hasSubscribers) { + channels.ping.publish({ + payload: body + }) + } + } + + this.#state = parserStates.INFO + + if (this.#byteOffset > 0) { + continue + } else { + callback() + return + } + } else if (this.#info.opcode === opcodes.PONG) { + // A Pong frame MAY be sent unsolicited. This serves as a + // unidirectional heartbeat. A response to an unsolicited Pong frame is + // not expected. + + const body = this.consume(payloadLength) + + if (channels.pong.hasSubscribers) { + channels.pong.publish({ + payload: body + }) + } + + if (this.#byteOffset > 0) { + continue + } else { + callback() + return + } + } + } else if (this.#state === parserStates.PAYLOADLENGTH_16) { + if (this.#byteOffset < 2) { + return callback() + } + + const buffer = this.consume(2) + + this.#info.payloadLength = buffer.readUInt16BE(0) + this.#state = parserStates.READ_DATA + } else if (this.#state === parserStates.PAYLOADLENGTH_64) { + if (this.#byteOffset < 8) { + return callback() + } + + const buffer = this.consume(8) + const upper = buffer.readUInt32BE(0) + + // 2^31 is the maxinimum bytes an arraybuffer can contain + // on 32-bit systems. Although, on 64-bit systems, this is + // 2^53-1 bytes. + // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Errors/Invalid_array_length + // https://source.chromium.org/chromium/chromium/src/+/main:v8/src/common/globals.h;drc=1946212ac0100668f14eb9e2843bdd846e510a1e;bpv=1;bpt=1;l=1275 + // https://source.chromium.org/chromium/chromium/src/+/main:v8/src/objects/js-array-buffer.h;l=34;drc=1946212ac0100668f14eb9e2843bdd846e510a1e + if (upper > 2 ** 31 - 1) { + failWebsocketConnection(this.ws, 'Received payload length > 2^31 bytes.') + return + } + + const lower = buffer.readUInt32BE(4) + + this.#info.payloadLength = (upper << 8) + lower + this.#state = parserStates.READ_DATA + } else if (this.#state === parserStates.READ_DATA) { + if (this.#byteOffset < this.#info.payloadLength) { + // If there is still more data in this chunk that needs to be read + return callback() + } else if (this.#byteOffset >= this.#info.payloadLength) { + // If the server sent multiple frames in a single chunk + + const body = this.consume(this.#info.payloadLength) + + this.#fragments.push(body) + + // If the frame is unfragmented, or a fragmented frame was terminated, + // a message was received + if (!this.#info.fragmented || (this.#info.fin && this.#info.opcode === opcodes.CONTINUATION)) { + const fullMessage = Buffer.concat(this.#fragments) + + websocketMessageReceived(this.ws, this.#info.originalOpcode, fullMessage) + + this.#info = {} + this.#fragments.length = 0 + } + + this.#state = parserStates.INFO + } + } + + if (this.#byteOffset > 0) { + continue + } else { + callback() + break + } + } + } + + /** + * Take n bytes from the buffered Buffers + * @param {number} n + * @returns {Buffer|null} + */ + consume (n) { + if (n > this.#byteOffset) { + return null + } else if (n === 0) { + return emptyBuffer + } + + if (this.#buffers[0].length === n) { + this.#byteOffset -= this.#buffers[0].length + return this.#buffers.shift() + } + + const buffer = Buffer.allocUnsafe(n) + let offset = 0 + + while (offset !== n) { + const next = this.#buffers[0] + const { length } = next + + if (length + offset === n) { + buffer.set(this.#buffers.shift(), offset) + break + } else if (length + offset > n) { + buffer.set(next.subarray(0, n - offset), offset) + this.#buffers[0] = next.subarray(n - offset) + break + } else { + buffer.set(this.#buffers.shift(), offset) + offset += next.length + } + } + + this.#byteOffset -= n + + return buffer + } + + parseCloseBody (onlyCode, data) { + // https://datatracker.ietf.org/doc/html/rfc6455#section-7.1.5 + /** @type {number|undefined} */ + let code + + if (data.length >= 2) { + // _The WebSocket Connection Close Code_ is + // defined as the status code (Section 7.4) contained in the first Close + // control frame received by the application + code = data.readUInt16BE(0) + } + + if (onlyCode) { + if (!isValidStatusCode(code)) { + return null + } + + return { code } + } + + // https://datatracker.ietf.org/doc/html/rfc6455#section-7.1.6 + /** @type {Buffer} */ + let reason = data.subarray(2) + + // Remove BOM + if (reason[0] === 0xEF && reason[1] === 0xBB && reason[2] === 0xBF) { + reason = reason.subarray(3) + } + + if (code !== undefined && !isValidStatusCode(code)) { + return null + } + + try { + // TODO: optimize this + reason = new TextDecoder('utf-8', { fatal: true }).decode(reason) + } catch { + return null + } + + return { code, reason } + } + + get closingInfo () { + return this.#info.closeInfo + } +} + +module.exports = { + ByteParser +} diff --git a/g4f/Provider/npm/node_modules/undici/lib/websocket/symbols.js b/g4f/Provider/npm/node_modules/undici/lib/websocket/symbols.js new file mode 100644 index 00000000..11d03e38 --- /dev/null +++ b/g4f/Provider/npm/node_modules/undici/lib/websocket/symbols.js @@ -0,0 +1,12 @@ +'use strict' + +module.exports = { + kWebSocketURL: Symbol('url'), + kReadyState: Symbol('ready state'), + kController: Symbol('controller'), + kResponse: Symbol('response'), + kBinaryType: Symbol('binary type'), + kSentClose: Symbol('sent close'), + kReceivedClose: Symbol('received close'), + kByteParser: Symbol('byte parser') +} diff --git a/g4f/Provider/npm/node_modules/undici/lib/websocket/util.js b/g4f/Provider/npm/node_modules/undici/lib/websocket/util.js new file mode 100644 index 00000000..6c59b2c2 --- /dev/null +++ b/g4f/Provider/npm/node_modules/undici/lib/websocket/util.js @@ -0,0 +1,200 @@ +'use strict' + +const { kReadyState, kController, kResponse, kBinaryType, kWebSocketURL } = require('./symbols') +const { states, opcodes } = require('./constants') +const { MessageEvent, ErrorEvent } = require('./events') + +/* globals Blob */ + +/** + * @param {import('./websocket').WebSocket} ws + */ +function isEstablished (ws) { + // If the server's response is validated as provided for above, it is + // said that _The WebSocket Connection is Established_ and that the + // WebSocket Connection is in the OPEN state. + return ws[kReadyState] === states.OPEN +} + +/** + * @param {import('./websocket').WebSocket} ws + */ +function isClosing (ws) { + // Upon either sending or receiving a Close control frame, it is said + // that _The WebSocket Closing Handshake is Started_ and that the + // WebSocket connection is in the CLOSING state. + return ws[kReadyState] === states.CLOSING +} + +/** + * @param {import('./websocket').WebSocket} ws + */ +function isClosed (ws) { + return ws[kReadyState] === states.CLOSED +} + +/** + * @see https://dom.spec.whatwg.org/#concept-event-fire + * @param {string} e + * @param {EventTarget} target + * @param {EventInit | undefined} eventInitDict + */ +function fireEvent (e, target, eventConstructor = Event, eventInitDict) { + // 1. If eventConstructor is not given, then let eventConstructor be Event. + + // 2. Let event be the result of creating an event given eventConstructor, + // in the relevant realm of target. + // 3. Initialize event’s type attribute to e. + const event = new eventConstructor(e, eventInitDict) // eslint-disable-line new-cap + + // 4. Initialize any other IDL attributes of event as described in the + // invocation of this algorithm. + + // 5. Return the result of dispatching event at target, with legacy target + // override flag set if set. + target.dispatchEvent(event) +} + +/** + * @see https://websockets.spec.whatwg.org/#feedback-from-the-protocol + * @param {import('./websocket').WebSocket} ws + * @param {number} type Opcode + * @param {Buffer} data application data + */ +function websocketMessageReceived (ws, type, data) { + // 1. If ready state is not OPEN (1), then return. + if (ws[kReadyState] !== states.OPEN) { + return + } + + // 2. Let dataForEvent be determined by switching on type and binary type: + let dataForEvent + + if (type === opcodes.TEXT) { + // -> type indicates that the data is Text + // a new DOMString containing data + try { + dataForEvent = new TextDecoder('utf-8', { fatal: true }).decode(data) + } catch { + failWebsocketConnection(ws, 'Received invalid UTF-8 in text frame.') + return + } + } else if (type === opcodes.BINARY) { + if (ws[kBinaryType] === 'blob') { + // -> type indicates that the data is Binary and binary type is "blob" + // a new Blob object, created in the relevant Realm of the WebSocket + // object, that represents data as its raw data + dataForEvent = new Blob([data]) + } else { + // -> type indicates that the data is Binary and binary type is "arraybuffer" + // a new ArrayBuffer object, created in the relevant Realm of the + // WebSocket object, whose contents are data + dataForEvent = new Uint8Array(data).buffer + } + } + + // 3. Fire an event named message at the WebSocket object, using MessageEvent, + // with the origin attribute initialized to the serialization of the WebSocket + // object’s url's origin, and the data attribute initialized to dataForEvent. + fireEvent('message', ws, MessageEvent, { + origin: ws[kWebSocketURL].origin, + data: dataForEvent + }) +} + +/** + * @see https://datatracker.ietf.org/doc/html/rfc6455 + * @see https://datatracker.ietf.org/doc/html/rfc2616 + * @see https://bugs.chromium.org/p/chromium/issues/detail?id=398407 + * @param {string} protocol + */ +function isValidSubprotocol (protocol) { + // If present, this value indicates one + // or more comma-separated subprotocol the client wishes to speak, + // ordered by preference. The elements that comprise this value + // MUST be non-empty strings with characters in the range U+0021 to + // U+007E not including separator characters as defined in + // [RFC2616] and MUST all be unique strings. + if (protocol.length === 0) { + return false + } + + for (const char of protocol) { + const code = char.charCodeAt(0) + + if ( + code < 0x21 || + code > 0x7E || + char === '(' || + char === ')' || + char === '<' || + char === '>' || + char === '@' || + char === ',' || + char === ';' || + char === ':' || + char === '\\' || + char === '"' || + char === '/' || + char === '[' || + char === ']' || + char === '?' || + char === '=' || + char === '{' || + char === '}' || + code === 32 || // SP + code === 9 // HT + ) { + return false + } + } + + return true +} + +/** + * @see https://datatracker.ietf.org/doc/html/rfc6455#section-7-4 + * @param {number} code + */ +function isValidStatusCode (code) { + if (code >= 1000 && code < 1015) { + return ( + code !== 1004 && // reserved + code !== 1005 && // "MUST NOT be set as a status code" + code !== 1006 // "MUST NOT be set as a status code" + ) + } + + return code >= 3000 && code <= 4999 +} + +/** + * @param {import('./websocket').WebSocket} ws + * @param {string|undefined} reason + */ +function failWebsocketConnection (ws, reason) { + const { [kController]: controller, [kResponse]: response } = ws + + controller.abort() + + if (response?.socket && !response.socket.destroyed) { + response.socket.destroy() + } + + if (reason) { + fireEvent('error', ws, ErrorEvent, { + error: new Error(reason) + }) + } +} + +module.exports = { + isEstablished, + isClosing, + isClosed, + fireEvent, + isValidSubprotocol, + isValidStatusCode, + failWebsocketConnection, + websocketMessageReceived +} diff --git a/g4f/Provider/npm/node_modules/undici/lib/websocket/websocket.js b/g4f/Provider/npm/node_modules/undici/lib/websocket/websocket.js new file mode 100644 index 00000000..e4aa58f5 --- /dev/null +++ b/g4f/Provider/npm/node_modules/undici/lib/websocket/websocket.js @@ -0,0 +1,641 @@ +'use strict' + +const { webidl } = require('../fetch/webidl') +const { DOMException } = require('../fetch/constants') +const { URLSerializer } = require('../fetch/dataURL') +const { getGlobalOrigin } = require('../fetch/global') +const { staticPropertyDescriptors, states, opcodes, emptyBuffer } = require('./constants') +const { + kWebSocketURL, + kReadyState, + kController, + kBinaryType, + kResponse, + kSentClose, + kByteParser +} = require('./symbols') +const { isEstablished, isClosing, isValidSubprotocol, failWebsocketConnection, fireEvent } = require('./util') +const { establishWebSocketConnection } = require('./connection') +const { WebsocketFrameSend } = require('./frame') +const { ByteParser } = require('./receiver') +const { kEnumerableProperty, isBlobLike } = require('../core/util') +const { getGlobalDispatcher } = require('../global') +const { types } = require('util') + +let experimentalWarned = false + +// https://websockets.spec.whatwg.org/#interface-definition +class WebSocket extends EventTarget { + #events = { + open: null, + error: null, + close: null, + message: null + } + + #bufferedAmount = 0 + #protocol = '' + #extensions = '' + + /** + * @param {string} url + * @param {string|string[]} protocols + */ + constructor (url, protocols = []) { + super() + + webidl.argumentLengthCheck(arguments, 1, { header: 'WebSocket constructor' }) + + if (!experimentalWarned) { + experimentalWarned = true + process.emitWarning('WebSockets are experimental, expect them to change at any time.', { + code: 'UNDICI-WS' + }) + } + + const options = webidl.converters['DOMString or sequence<DOMString> or WebSocketInit'](protocols) + + url = webidl.converters.USVString(url) + protocols = options.protocols + + // 1. Let baseURL be this's relevant settings object's API base URL. + const baseURL = getGlobalOrigin() + + // 1. Let urlRecord be the result of applying the URL parser to url with baseURL. + let urlRecord + + try { + urlRecord = new URL(url, baseURL) + } catch (e) { + // 3. If urlRecord is failure, then throw a "SyntaxError" DOMException. + throw new DOMException(e, 'SyntaxError') + } + + // 4. If urlRecord’s scheme is "http", then set urlRecord’s scheme to "ws". + if (urlRecord.protocol === 'http:') { + urlRecord.protocol = 'ws:' + } else if (urlRecord.protocol === 'https:') { + // 5. Otherwise, if urlRecord’s scheme is "https", set urlRecord’s scheme to "wss". + urlRecord.protocol = 'wss:' + } + + // 6. If urlRecord’s scheme is not "ws" or "wss", then throw a "SyntaxError" DOMException. + if (urlRecord.protocol !== 'ws:' && urlRecord.protocol !== 'wss:') { + throw new DOMException( + `Expected a ws: or wss: protocol, got ${urlRecord.protocol}`, + 'SyntaxError' + ) + } + + // 7. If urlRecord’s fragment is non-null, then throw a "SyntaxError" + // DOMException. + if (urlRecord.hash || urlRecord.href.endsWith('#')) { + throw new DOMException('Got fragment', 'SyntaxError') + } + + // 8. If protocols is a string, set protocols to a sequence consisting + // of just that string. + if (typeof protocols === 'string') { + protocols = [protocols] + } + + // 9. If any of the values in protocols occur more than once or otherwise + // fail to match the requirements for elements that comprise the value + // of `Sec-WebSocket-Protocol` fields as defined by The WebSocket + // protocol, then throw a "SyntaxError" DOMException. + if (protocols.length !== new Set(protocols.map(p => p.toLowerCase())).size) { + throw new DOMException('Invalid Sec-WebSocket-Protocol value', 'SyntaxError') + } + + if (protocols.length > 0 && !protocols.every(p => isValidSubprotocol(p))) { + throw new DOMException('Invalid Sec-WebSocket-Protocol value', 'SyntaxError') + } + + // 10. Set this's url to urlRecord. + this[kWebSocketURL] = new URL(urlRecord.href) + + // 11. Let client be this's relevant settings object. + + // 12. Run this step in parallel: + + // 1. Establish a WebSocket connection given urlRecord, protocols, + // and client. + this[kController] = establishWebSocketConnection( + urlRecord, + protocols, + this, + (response) => this.#onConnectionEstablished(response), + options + ) + + // Each WebSocket object has an associated ready state, which is a + // number representing the state of the connection. Initially it must + // be CONNECTING (0). + this[kReadyState] = WebSocket.CONNECTING + + // The extensions attribute must initially return the empty string. + + // The protocol attribute must initially return the empty string. + + // Each WebSocket object has an associated binary type, which is a + // BinaryType. Initially it must be "blob". + this[kBinaryType] = 'blob' + } + + /** + * @see https://websockets.spec.whatwg.org/#dom-websocket-close + * @param {number|undefined} code + * @param {string|undefined} reason + */ + close (code = undefined, reason = undefined) { + webidl.brandCheck(this, WebSocket) + + if (code !== undefined) { + code = webidl.converters['unsigned short'](code, { clamp: true }) + } + + if (reason !== undefined) { + reason = webidl.converters.USVString(reason) + } + + // 1. If code is present, but is neither an integer equal to 1000 nor an + // integer in the range 3000 to 4999, inclusive, throw an + // "InvalidAccessError" DOMException. + if (code !== undefined) { + if (code !== 1000 && (code < 3000 || code > 4999)) { + throw new DOMException('invalid code', 'InvalidAccessError') + } + } + + let reasonByteLength = 0 + + // 2. If reason is present, then run these substeps: + if (reason !== undefined) { + // 1. Let reasonBytes be the result of encoding reason. + // 2. If reasonBytes is longer than 123 bytes, then throw a + // "SyntaxError" DOMException. + reasonByteLength = Buffer.byteLength(reason) + + if (reasonByteLength > 123) { + throw new DOMException( + `Reason must be less than 123 bytes; received ${reasonByteLength}`, + 'SyntaxError' + ) + } + } + + // 3. Run the first matching steps from the following list: + if (this[kReadyState] === WebSocket.CLOSING || this[kReadyState] === WebSocket.CLOSED) { + // If this's ready state is CLOSING (2) or CLOSED (3) + // Do nothing. + } else if (!isEstablished(this)) { + // If the WebSocket connection is not yet established + // Fail the WebSocket connection and set this's ready state + // to CLOSING (2). + failWebsocketConnection(this, 'Connection was closed before it was established.') + this[kReadyState] = WebSocket.CLOSING + } else if (!isClosing(this)) { + // If the WebSocket closing handshake has not yet been started + // Start the WebSocket closing handshake and set this's ready + // state to CLOSING (2). + // - If neither code nor reason is present, the WebSocket Close + // message must not have a body. + // - If code is present, then the status code to use in the + // WebSocket Close message must be the integer given by code. + // - If reason is also present, then reasonBytes must be + // provided in the Close message after the status code. + + const frame = new WebsocketFrameSend() + + // If neither code nor reason is present, the WebSocket Close + // message must not have a body. + + // If code is present, then the status code to use in the + // WebSocket Close message must be the integer given by code. + if (code !== undefined && reason === undefined) { + frame.frameData = Buffer.allocUnsafe(2) + frame.frameData.writeUInt16BE(code, 0) + } else if (code !== undefined && reason !== undefined) { + // If reason is also present, then reasonBytes must be + // provided in the Close message after the status code. + frame.frameData = Buffer.allocUnsafe(2 + reasonByteLength) + frame.frameData.writeUInt16BE(code, 0) + // the body MAY contain UTF-8-encoded data with value /reason/ + frame.frameData.write(reason, 2, 'utf-8') + } else { + frame.frameData = emptyBuffer + } + + /** @type {import('stream').Duplex} */ + const socket = this[kResponse].socket + + socket.write(frame.createFrame(opcodes.CLOSE), (err) => { + if (!err) { + this[kSentClose] = true + } + }) + + // Upon either sending or receiving a Close control frame, it is said + // that _The WebSocket Closing Handshake is Started_ and that the + // WebSocket connection is in the CLOSING state. + this[kReadyState] = states.CLOSING + } else { + // Otherwise + // Set this's ready state to CLOSING (2). + this[kReadyState] = WebSocket.CLOSING + } + } + + /** + * @see https://websockets.spec.whatwg.org/#dom-websocket-send + * @param {NodeJS.TypedArray|ArrayBuffer|Blob|string} data + */ + send (data) { + webidl.brandCheck(this, WebSocket) + + webidl.argumentLengthCheck(arguments, 1, { header: 'WebSocket.send' }) + + data = webidl.converters.WebSocketSendData(data) + + // 1. If this's ready state is CONNECTING, then throw an + // "InvalidStateError" DOMException. + if (this[kReadyState] === WebSocket.CONNECTING) { + throw new DOMException('Sent before connected.', 'InvalidStateError') + } + + // 2. Run the appropriate set of steps from the following list: + // https://datatracker.ietf.org/doc/html/rfc6455#section-6.1 + // https://datatracker.ietf.org/doc/html/rfc6455#section-5.2 + + if (!isEstablished(this) || isClosing(this)) { + return + } + + /** @type {import('stream').Duplex} */ + const socket = this[kResponse].socket + + // If data is a string + if (typeof data === 'string') { + // If the WebSocket connection is established and the WebSocket + // closing handshake has not yet started, then the user agent + // must send a WebSocket Message comprised of the data argument + // using a text frame opcode; if the data cannot be sent, e.g. + // because it would need to be buffered but the buffer is full, + // the user agent must flag the WebSocket as full and then close + // the WebSocket connection. Any invocation of this method with a + // string argument that does not throw an exception must increase + // the bufferedAmount attribute by the number of bytes needed to + // express the argument as UTF-8. + + const value = Buffer.from(data) + const frame = new WebsocketFrameSend(value) + const buffer = frame.createFrame(opcodes.TEXT) + + this.#bufferedAmount += value.byteLength + socket.write(buffer, () => { + this.#bufferedAmount -= value.byteLength + }) + } else if (types.isArrayBuffer(data)) { + // If the WebSocket connection is established, and the WebSocket + // closing handshake has not yet started, then the user agent must + // send a WebSocket Message comprised of data using a binary frame + // opcode; if the data cannot be sent, e.g. because it would need + // to be buffered but the buffer is full, the user agent must flag + // the WebSocket as full and then close the WebSocket connection. + // The data to be sent is the data stored in the buffer described + // by the ArrayBuffer object. Any invocation of this method with an + // ArrayBuffer argument that does not throw an exception must + // increase the bufferedAmount attribute by the length of the + // ArrayBuffer in bytes. + + const value = Buffer.from(data) + const frame = new WebsocketFrameSend(value) + const buffer = frame.createFrame(opcodes.BINARY) + + this.#bufferedAmount += value.byteLength + socket.write(buffer, () => { + this.#bufferedAmount -= value.byteLength + }) + } else if (ArrayBuffer.isView(data)) { + // If the WebSocket connection is established, and the WebSocket + // closing handshake has not yet started, then the user agent must + // send a WebSocket Message comprised of data using a binary frame + // opcode; if the data cannot be sent, e.g. because it would need to + // be buffered but the buffer is full, the user agent must flag the + // WebSocket as full and then close the WebSocket connection. The + // data to be sent is the data stored in the section of the buffer + // described by the ArrayBuffer object that data references. Any + // invocation of this method with this kind of argument that does + // not throw an exception must increase the bufferedAmount attribute + // by the length of data’s buffer in bytes. + + const ab = Buffer.from(data, data.byteOffset, data.byteLength) + + const frame = new WebsocketFrameSend(ab) + const buffer = frame.createFrame(opcodes.BINARY) + + this.#bufferedAmount += ab.byteLength + socket.write(buffer, () => { + this.#bufferedAmount -= ab.byteLength + }) + } else if (isBlobLike(data)) { + // If the WebSocket connection is established, and the WebSocket + // closing handshake has not yet started, then the user agent must + // send a WebSocket Message comprised of data using a binary frame + // opcode; if the data cannot be sent, e.g. because it would need to + // be buffered but the buffer is full, the user agent must flag the + // WebSocket as full and then close the WebSocket connection. The data + // to be sent is the raw data represented by the Blob object. Any + // invocation of this method with a Blob argument that does not throw + // an exception must increase the bufferedAmount attribute by the size + // of the Blob object’s raw data, in bytes. + + const frame = new WebsocketFrameSend() + + data.arrayBuffer().then((ab) => { + const value = Buffer.from(ab) + frame.frameData = value + const buffer = frame.createFrame(opcodes.BINARY) + + this.#bufferedAmount += value.byteLength + socket.write(buffer, () => { + this.#bufferedAmount -= value.byteLength + }) + }) + } + } + + get readyState () { + webidl.brandCheck(this, WebSocket) + + // The readyState getter steps are to return this's ready state. + return this[kReadyState] + } + + get bufferedAmount () { + webidl.brandCheck(this, WebSocket) + + return this.#bufferedAmount + } + + get url () { + webidl.brandCheck(this, WebSocket) + + // The url getter steps are to return this's url, serialized. + return URLSerializer(this[kWebSocketURL]) + } + + get extensions () { + webidl.brandCheck(this, WebSocket) + + return this.#extensions + } + + get protocol () { + webidl.brandCheck(this, WebSocket) + + return this.#protocol + } + + get onopen () { + webidl.brandCheck(this, WebSocket) + + return this.#events.open + } + + set onopen (fn) { + webidl.brandCheck(this, WebSocket) + + if (this.#events.open) { + this.removeEventListener('open', this.#events.open) + } + + if (typeof fn === 'function') { + this.#events.open = fn + this.addEventListener('open', fn) + } else { + this.#events.open = null + } + } + + get onerror () { + webidl.brandCheck(this, WebSocket) + + return this.#events.error + } + + set onerror (fn) { + webidl.brandCheck(this, WebSocket) + + if (this.#events.error) { + this.removeEventListener('error', this.#events.error) + } + + if (typeof fn === 'function') { + this.#events.error = fn + this.addEventListener('error', fn) + } else { + this.#events.error = null + } + } + + get onclose () { + webidl.brandCheck(this, WebSocket) + + return this.#events.close + } + + set onclose (fn) { + webidl.brandCheck(this, WebSocket) + + if (this.#events.close) { + this.removeEventListener('close', this.#events.close) + } + + if (typeof fn === 'function') { + this.#events.close = fn + this.addEventListener('close', fn) + } else { + this.#events.close = null + } + } + + get onmessage () { + webidl.brandCheck(this, WebSocket) + + return this.#events.message + } + + set onmessage (fn) { + webidl.brandCheck(this, WebSocket) + + if (this.#events.message) { + this.removeEventListener('message', this.#events.message) + } + + if (typeof fn === 'function') { + this.#events.message = fn + this.addEventListener('message', fn) + } else { + this.#events.message = null + } + } + + get binaryType () { + webidl.brandCheck(this, WebSocket) + + return this[kBinaryType] + } + + set binaryType (type) { + webidl.brandCheck(this, WebSocket) + + if (type !== 'blob' && type !== 'arraybuffer') { + this[kBinaryType] = 'blob' + } else { + this[kBinaryType] = type + } + } + + /** + * @see https://websockets.spec.whatwg.org/#feedback-from-the-protocol + */ + #onConnectionEstablished (response) { + // processResponse is called when the "response’s header list has been received and initialized." + // once this happens, the connection is open + this[kResponse] = response + + const parser = new ByteParser(this) + parser.on('drain', function onParserDrain () { + this.ws[kResponse].socket.resume() + }) + + response.socket.ws = this + this[kByteParser] = parser + + // 1. Change the ready state to OPEN (1). + this[kReadyState] = states.OPEN + + // 2. Change the extensions attribute’s value to the extensions in use, if + // it is not the null value. + // https://datatracker.ietf.org/doc/html/rfc6455#section-9.1 + const extensions = response.headersList.get('sec-websocket-extensions') + + 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 +} |