fixparser-plugin-messagestore-kdb
Version:
FIXParser KDB+ plugin
1,561 lines (1,554 loc) • 147 kB
JavaScript
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __require = /* @__PURE__ */ ((x) => typeof require !== "undefined" ? require : typeof Proxy !== "undefined" ? new Proxy(x, {
get: (a, b) => (typeof require !== "undefined" ? require : a)[b]
}) : x)(function(x) {
if (typeof require !== "undefined") return require.apply(this, arguments);
throw Error('Dynamic require of "' + x + '" is not supported');
});
var __commonJS = (cb, mod) => function __require2() {
return mod || (0, cb[__getOwnPropNames(cb)[0]])((mod = { exports: {} }).exports, mod), mod.exports;
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
// If the importer is in node compatibility mode or this is not an ESM
// file that has been converted to a CommonJS file using a Babel-
// compatible transform (i.e. "__esModule" has not been set), then set
// "default" to the CommonJS "module.exports" for node compatibility.
isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: true }) : target,
mod
));
// ../../node_modules/ws/lib/constants.js
var require_constants = __commonJS({
"../../node_modules/ws/lib/constants.js"(exports, module) {
"use strict";
var BINARY_TYPES = ["nodebuffer", "arraybuffer", "fragments"];
var hasBlob = typeof Blob !== "undefined";
if (hasBlob) BINARY_TYPES.push("blob");
module.exports = {
BINARY_TYPES,
EMPTY_BUFFER: Buffer.alloc(0),
GUID: "258EAFA5-E914-47DA-95CA-C5AB0DC85B11",
hasBlob,
kForOnEventAttribute: Symbol("kIsForOnEventAttribute"),
kListener: Symbol("kListener"),
kStatusCode: Symbol("status-code"),
kWebSocket: Symbol("websocket"),
NOOP: () => {
}
};
}
});
// ../../node_modules/ws/lib/buffer-util.js
var require_buffer_util = __commonJS({
"../../node_modules/ws/lib/buffer-util.js"(exports, module) {
"use strict";
var { EMPTY_BUFFER } = require_constants();
var FastBuffer = Buffer[Symbol.species];
function concat(list, totalLength) {
if (list.length === 0) return EMPTY_BUFFER;
if (list.length === 1) return list[0];
const target = Buffer.allocUnsafe(totalLength);
let offset = 0;
for (let i = 0; i < list.length; i++) {
const buf = list[i];
target.set(buf, offset);
offset += buf.length;
}
if (offset < totalLength) {
return new FastBuffer(target.buffer, target.byteOffset, offset);
}
return target;
}
function _mask(source, mask, output, offset, length) {
for (let i = 0; i < length; i++) {
output[offset + i] = source[i] ^ mask[i & 3];
}
}
function _unmask(buffer, mask) {
for (let i = 0; i < buffer.length; i++) {
buffer[i] ^= mask[i & 3];
}
}
function toArrayBuffer(buf) {
if (buf.length === buf.buffer.byteLength) {
return buf.buffer;
}
return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.length);
}
function toBuffer(data) {
toBuffer.readOnly = true;
if (Buffer.isBuffer(data)) return data;
let buf;
if (data instanceof ArrayBuffer) {
buf = new FastBuffer(data);
} else if (ArrayBuffer.isView(data)) {
buf = new FastBuffer(data.buffer, data.byteOffset, data.byteLength);
} else {
buf = Buffer.from(data);
toBuffer.readOnly = false;
}
return buf;
}
module.exports = {
concat,
mask: _mask,
toArrayBuffer,
toBuffer,
unmask: _unmask
};
if (!process.env.WS_NO_BUFFER_UTIL) {
try {
const bufferUtil = __require("bufferutil");
module.exports.mask = function(source, mask, output, offset, length) {
if (length < 48) _mask(source, mask, output, offset, length);
else bufferUtil.mask(source, mask, output, offset, length);
};
module.exports.unmask = function(buffer, mask) {
if (buffer.length < 32) _unmask(buffer, mask);
else bufferUtil.unmask(buffer, mask);
};
} catch (e) {
}
}
}
});
// ../../node_modules/ws/lib/limiter.js
var require_limiter = __commonJS({
"../../node_modules/ws/lib/limiter.js"(exports, module) {
"use strict";
var kDone = Symbol("kDone");
var kRun = Symbol("kRun");
var Limiter = class {
/**
* Creates a new `Limiter`.
*
* @param {Number} [concurrency=Infinity] The maximum number of jobs allowed
* to run concurrently
*/
constructor(concurrency) {
this[kDone] = () => {
this.pending--;
this[kRun]();
};
this.concurrency = concurrency || Infinity;
this.jobs = [];
this.pending = 0;
}
/**
* Adds a job to the queue.
*
* @param {Function} job The job to run
* @public
*/
add(job) {
this.jobs.push(job);
this[kRun]();
}
/**
* Removes a job from the queue and runs it if possible.
*
* @private
*/
[kRun]() {
if (this.pending === this.concurrency) return;
if (this.jobs.length) {
const job = this.jobs.shift();
this.pending++;
job(this[kDone]);
}
}
};
module.exports = Limiter;
}
});
// ../../node_modules/ws/lib/permessage-deflate.js
var require_permessage_deflate = __commonJS({
"../../node_modules/ws/lib/permessage-deflate.js"(exports, module) {
"use strict";
var zlib = __require("zlib");
var bufferUtil = require_buffer_util();
var Limiter = require_limiter();
var { kStatusCode } = require_constants();
var FastBuffer = Buffer[Symbol.species];
var TRAILER = Buffer.from([0, 0, 255, 255]);
var kPerMessageDeflate = Symbol("permessage-deflate");
var kTotalLength = Symbol("total-length");
var kCallback = Symbol("callback");
var kBuffers = Symbol("buffers");
var kError = Symbol("error");
var zlibLimiter;
var PerMessageDeflate = class {
/**
* Creates a PerMessageDeflate instance.
*
* @param {Object} [options] Configuration options
* @param {(Boolean|Number)} [options.clientMaxWindowBits] Advertise support
* for, or request, a custom client window size
* @param {Boolean} [options.clientNoContextTakeover=false] Advertise/
* acknowledge disabling of client context takeover
* @param {Number} [options.concurrencyLimit=10] The number of concurrent
* calls to zlib
* @param {(Boolean|Number)} [options.serverMaxWindowBits] Request/confirm the
* use of a custom server window size
* @param {Boolean} [options.serverNoContextTakeover=false] Request/accept
* disabling of server context takeover
* @param {Number} [options.threshold=1024] Size (in bytes) below which
* messages should not be compressed if context takeover is disabled
* @param {Object} [options.zlibDeflateOptions] Options to pass to zlib on
* deflate
* @param {Object} [options.zlibInflateOptions] Options to pass to zlib on
* inflate
* @param {Boolean} [isServer=false] Create the instance in either server or
* client mode
* @param {Number} [maxPayload=0] The maximum allowed message length
*/
constructor(options, isServer, maxPayload) {
this._maxPayload = maxPayload | 0;
this._options = options || {};
this._threshold = this._options.threshold !== void 0 ? this._options.threshold : 1024;
this._isServer = !!isServer;
this._deflate = null;
this._inflate = null;
this.params = null;
if (!zlibLimiter) {
const concurrency = this._options.concurrencyLimit !== void 0 ? this._options.concurrencyLimit : 10;
zlibLimiter = new Limiter(concurrency);
}
}
/**
* @type {String}
*/
static get extensionName() {
return "permessage-deflate";
}
/**
* Create an extension negotiation offer.
*
* @return {Object} Extension parameters
* @public
*/
offer() {
const params = {};
if (this._options.serverNoContextTakeover) {
params.server_no_context_takeover = true;
}
if (this._options.clientNoContextTakeover) {
params.client_no_context_takeover = true;
}
if (this._options.serverMaxWindowBits) {
params.server_max_window_bits = this._options.serverMaxWindowBits;
}
if (this._options.clientMaxWindowBits) {
params.client_max_window_bits = this._options.clientMaxWindowBits;
} else if (this._options.clientMaxWindowBits == null) {
params.client_max_window_bits = true;
}
return params;
}
/**
* Accept an extension negotiation offer/response.
*
* @param {Array} configurations The extension negotiation offers/reponse
* @return {Object} Accepted configuration
* @public
*/
accept(configurations) {
configurations = this.normalizeParams(configurations);
this.params = this._isServer ? this.acceptAsServer(configurations) : this.acceptAsClient(configurations);
return this.params;
}
/**
* Releases all resources used by the extension.
*
* @public
*/
cleanup() {
if (this._inflate) {
this._inflate.close();
this._inflate = null;
}
if (this._deflate) {
const callback = this._deflate[kCallback];
this._deflate.close();
this._deflate = null;
if (callback) {
callback(
new Error(
"The deflate stream was closed while data was being processed"
)
);
}
}
}
/**
* Accept an extension negotiation offer.
*
* @param {Array} offers The extension negotiation offers
* @return {Object} Accepted configuration
* @private
*/
acceptAsServer(offers) {
const opts = this._options;
const accepted = offers.find((params) => {
if (opts.serverNoContextTakeover === false && params.server_no_context_takeover || params.server_max_window_bits && (opts.serverMaxWindowBits === false || typeof opts.serverMaxWindowBits === "number" && opts.serverMaxWindowBits > params.server_max_window_bits) || typeof opts.clientMaxWindowBits === "number" && !params.client_max_window_bits) {
return false;
}
return true;
});
if (!accepted) {
throw new Error("None of the extension offers can be accepted");
}
if (opts.serverNoContextTakeover) {
accepted.server_no_context_takeover = true;
}
if (opts.clientNoContextTakeover) {
accepted.client_no_context_takeover = true;
}
if (typeof opts.serverMaxWindowBits === "number") {
accepted.server_max_window_bits = opts.serverMaxWindowBits;
}
if (typeof opts.clientMaxWindowBits === "number") {
accepted.client_max_window_bits = opts.clientMaxWindowBits;
} else if (accepted.client_max_window_bits === true || opts.clientMaxWindowBits === false) {
delete accepted.client_max_window_bits;
}
return accepted;
}
/**
* Accept the extension negotiation response.
*
* @param {Array} response The extension negotiation response
* @return {Object} Accepted configuration
* @private
*/
acceptAsClient(response) {
const params = response[0];
if (this._options.clientNoContextTakeover === false && params.client_no_context_takeover) {
throw new Error('Unexpected parameter "client_no_context_takeover"');
}
if (!params.client_max_window_bits) {
if (typeof this._options.clientMaxWindowBits === "number") {
params.client_max_window_bits = this._options.clientMaxWindowBits;
}
} else if (this._options.clientMaxWindowBits === false || typeof this._options.clientMaxWindowBits === "number" && params.client_max_window_bits > this._options.clientMaxWindowBits) {
throw new Error(
'Unexpected or invalid parameter "client_max_window_bits"'
);
}
return params;
}
/**
* Normalize parameters.
*
* @param {Array} configurations The extension negotiation offers/reponse
* @return {Array} The offers/response with normalized parameters
* @private
*/
normalizeParams(configurations) {
configurations.forEach((params) => {
Object.keys(params).forEach((key) => {
let value = params[key];
if (value.length > 1) {
throw new Error(`Parameter "${key}" must have only a single value`);
}
value = value[0];
if (key === "client_max_window_bits") {
if (value !== true) {
const num = +value;
if (!Number.isInteger(num) || num < 8 || num > 15) {
throw new TypeError(
`Invalid value for parameter "${key}": ${value}`
);
}
value = num;
} else if (!this._isServer) {
throw new TypeError(
`Invalid value for parameter "${key}": ${value}`
);
}
} else if (key === "server_max_window_bits") {
const num = +value;
if (!Number.isInteger(num) || num < 8 || num > 15) {
throw new TypeError(
`Invalid value for parameter "${key}": ${value}`
);
}
value = num;
} else if (key === "client_no_context_takeover" || key === "server_no_context_takeover") {
if (value !== true) {
throw new TypeError(
`Invalid value for parameter "${key}": ${value}`
);
}
} else {
throw new Error(`Unknown parameter "${key}"`);
}
params[key] = value;
});
});
return configurations;
}
/**
* Decompress data. Concurrency limited.
*
* @param {Buffer} data Compressed data
* @param {Boolean} fin Specifies whether or not this is the last fragment
* @param {Function} callback Callback
* @public
*/
decompress(data, fin, callback) {
zlibLimiter.add((done) => {
this._decompress(data, fin, (err, result) => {
done();
callback(err, result);
});
});
}
/**
* Compress data. Concurrency limited.
*
* @param {(Buffer|String)} data Data to compress
* @param {Boolean} fin Specifies whether or not this is the last fragment
* @param {Function} callback Callback
* @public
*/
compress(data, fin, callback) {
zlibLimiter.add((done) => {
this._compress(data, fin, (err, result) => {
done();
callback(err, result);
});
});
}
/**
* Decompress data.
*
* @param {Buffer} data Compressed data
* @param {Boolean} fin Specifies whether or not this is the last fragment
* @param {Function} callback Callback
* @private
*/
_decompress(data, fin, callback) {
const endpoint = this._isServer ? "client" : "server";
if (!this._inflate) {
const key = `${endpoint}_max_window_bits`;
const windowBits = typeof this.params[key] !== "number" ? zlib.Z_DEFAULT_WINDOWBITS : this.params[key];
this._inflate = zlib.createInflateRaw({
...this._options.zlibInflateOptions,
windowBits
});
this._inflate[kPerMessageDeflate] = this;
this._inflate[kTotalLength] = 0;
this._inflate[kBuffers] = [];
this._inflate.on("error", inflateOnError);
this._inflate.on("data", inflateOnData);
}
this._inflate[kCallback] = callback;
this._inflate.write(data);
if (fin) this._inflate.write(TRAILER);
this._inflate.flush(() => {
const err = this._inflate[kError];
if (err) {
this._inflate.close();
this._inflate = null;
callback(err);
return;
}
const data2 = bufferUtil.concat(
this._inflate[kBuffers],
this._inflate[kTotalLength]
);
if (this._inflate._readableState.endEmitted) {
this._inflate.close();
this._inflate = null;
} else {
this._inflate[kTotalLength] = 0;
this._inflate[kBuffers] = [];
if (fin && this.params[`${endpoint}_no_context_takeover`]) {
this._inflate.reset();
}
}
callback(null, data2);
});
}
/**
* Compress data.
*
* @param {(Buffer|String)} data Data to compress
* @param {Boolean} fin Specifies whether or not this is the last fragment
* @param {Function} callback Callback
* @private
*/
_compress(data, fin, callback) {
const endpoint = this._isServer ? "server" : "client";
if (!this._deflate) {
const key = `${endpoint}_max_window_bits`;
const windowBits = typeof this.params[key] !== "number" ? zlib.Z_DEFAULT_WINDOWBITS : this.params[key];
this._deflate = zlib.createDeflateRaw({
...this._options.zlibDeflateOptions,
windowBits
});
this._deflate[kTotalLength] = 0;
this._deflate[kBuffers] = [];
this._deflate.on("data", deflateOnData);
}
this._deflate[kCallback] = callback;
this._deflate.write(data);
this._deflate.flush(zlib.Z_SYNC_FLUSH, () => {
if (!this._deflate) {
return;
}
let data2 = bufferUtil.concat(
this._deflate[kBuffers],
this._deflate[kTotalLength]
);
if (fin) {
data2 = new FastBuffer(data2.buffer, data2.byteOffset, data2.length - 4);
}
this._deflate[kCallback] = null;
this._deflate[kTotalLength] = 0;
this._deflate[kBuffers] = [];
if (fin && this.params[`${endpoint}_no_context_takeover`]) {
this._deflate.reset();
}
callback(null, data2);
});
}
};
module.exports = PerMessageDeflate;
function deflateOnData(chunk) {
this[kBuffers].push(chunk);
this[kTotalLength] += chunk.length;
}
function inflateOnData(chunk) {
this[kTotalLength] += chunk.length;
if (this[kPerMessageDeflate]._maxPayload < 1 || this[kTotalLength] <= this[kPerMessageDeflate]._maxPayload) {
this[kBuffers].push(chunk);
return;
}
this[kError] = new RangeError("Max payload size exceeded");
this[kError].code = "WS_ERR_UNSUPPORTED_MESSAGE_LENGTH";
this[kError][kStatusCode] = 1009;
this.removeListener("data", inflateOnData);
this.reset();
}
function inflateOnError(err) {
this[kPerMessageDeflate]._inflate = null;
if (this[kError]) {
this[kCallback](this[kError]);
return;
}
err[kStatusCode] = 1007;
this[kCallback](err);
}
}
});
// ../../node_modules/ws/lib/validation.js
var require_validation = __commonJS({
"../../node_modules/ws/lib/validation.js"(exports, module) {
"use strict";
var { isUtf8 } = __require("buffer");
var { hasBlob } = require_constants();
var tokenChars = [
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
// 0 - 15
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
// 16 - 31
0,
1,
0,
1,
1,
1,
1,
1,
0,
0,
1,
1,
0,
1,
1,
0,
// 32 - 47
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0,
0,
0,
0,
0,
0,
// 48 - 63
0,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 64 - 79
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0,
0,
0,
1,
1,
// 80 - 95
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
// 96 - 111
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0,
1,
0,
1,
0
// 112 - 127
];
function isValidStatusCode(code) {
return code >= 1e3 && code <= 1014 && code !== 1004 && code !== 1005 && code !== 1006 || code >= 3e3 && code <= 4999;
}
function _isValidUTF8(buf) {
const len = buf.length;
let i = 0;
while (i < len) {
if ((buf[i] & 128) === 0) {
i++;
} else if ((buf[i] & 224) === 192) {
if (i + 1 === len || (buf[i + 1] & 192) !== 128 || (buf[i] & 254) === 192) {
return false;
}
i += 2;
} else if ((buf[i] & 240) === 224) {
if (i + 2 >= len || (buf[i + 1] & 192) !== 128 || (buf[i + 2] & 192) !== 128 || buf[i] === 224 && (buf[i + 1] & 224) === 128 || // Overlong
buf[i] === 237 && (buf[i + 1] & 224) === 160) {
return false;
}
i += 3;
} else if ((buf[i] & 248) === 240) {
if (i + 3 >= len || (buf[i + 1] & 192) !== 128 || (buf[i + 2] & 192) !== 128 || (buf[i + 3] & 192) !== 128 || buf[i] === 240 && (buf[i + 1] & 240) === 128 || // Overlong
buf[i] === 244 && buf[i + 1] > 143 || buf[i] > 244) {
return false;
}
i += 4;
} else {
return false;
}
}
return true;
}
function isBlob(value) {
return hasBlob && typeof value === "object" && typeof value.arrayBuffer === "function" && typeof value.type === "string" && typeof value.stream === "function" && (value[Symbol.toStringTag] === "Blob" || value[Symbol.toStringTag] === "File");
}
module.exports = {
isBlob,
isValidStatusCode,
isValidUTF8: _isValidUTF8,
tokenChars
};
if (isUtf8) {
module.exports.isValidUTF8 = function(buf) {
return buf.length < 24 ? _isValidUTF8(buf) : isUtf8(buf);
};
} else if (!process.env.WS_NO_UTF_8_VALIDATE) {
try {
const isValidUTF8 = __require("utf-8-validate");
module.exports.isValidUTF8 = function(buf) {
return buf.length < 32 ? _isValidUTF8(buf) : isValidUTF8(buf);
};
} catch (e) {
}
}
}
});
// ../../node_modules/ws/lib/receiver.js
var require_receiver = __commonJS({
"../../node_modules/ws/lib/receiver.js"(exports, module) {
"use strict";
var { Writable } = __require("stream");
var PerMessageDeflate = require_permessage_deflate();
var {
BINARY_TYPES,
EMPTY_BUFFER,
kStatusCode,
kWebSocket
} = require_constants();
var { concat, toArrayBuffer, unmask } = require_buffer_util();
var { isValidStatusCode, isValidUTF8 } = require_validation();
var FastBuffer = Buffer[Symbol.species];
var GET_INFO = 0;
var GET_PAYLOAD_LENGTH_16 = 1;
var GET_PAYLOAD_LENGTH_64 = 2;
var GET_MASK = 3;
var GET_DATA = 4;
var INFLATING = 5;
var DEFER_EVENT = 6;
var Receiver2 = class extends Writable {
/**
* Creates a Receiver instance.
*
* @param {Object} [options] Options object
* @param {Boolean} [options.allowSynchronousEvents=true] Specifies whether
* any of the `'message'`, `'ping'`, and `'pong'` events can be emitted
* multiple times in the same tick
* @param {String} [options.binaryType=nodebuffer] The type for binary data
* @param {Object} [options.extensions] An object containing the negotiated
* extensions
* @param {Boolean} [options.isServer=false] Specifies whether to operate in
* client or server mode
* @param {Number} [options.maxPayload=0] The maximum allowed message length
* @param {Boolean} [options.skipUTF8Validation=false] Specifies whether or
* not to skip UTF-8 validation for text and close messages
*/
constructor(options = {}) {
super();
this._allowSynchronousEvents = options.allowSynchronousEvents !== void 0 ? options.allowSynchronousEvents : true;
this._binaryType = options.binaryType || BINARY_TYPES[0];
this._extensions = options.extensions || {};
this._isServer = !!options.isServer;
this._maxPayload = options.maxPayload | 0;
this._skipUTF8Validation = !!options.skipUTF8Validation;
this[kWebSocket] = void 0;
this._bufferedBytes = 0;
this._buffers = [];
this._compressed = false;
this._payloadLength = 0;
this._mask = void 0;
this._fragmented = 0;
this._masked = false;
this._fin = false;
this._opcode = 0;
this._totalPayloadLength = 0;
this._messageLength = 0;
this._fragments = [];
this._errored = false;
this._loop = false;
this._state = GET_INFO;
}
/**
* Implements `Writable.prototype._write()`.
*
* @param {Buffer} chunk The chunk of data to write
* @param {String} encoding The character encoding of `chunk`
* @param {Function} cb Callback
* @private
*/
_write(chunk, encoding, cb) {
if (this._opcode === 8 && this._state == GET_INFO) return cb();
this._bufferedBytes += chunk.length;
this._buffers.push(chunk);
this.startLoop(cb);
}
/**
* Consumes `n` bytes from the buffered data.
*
* @param {Number} n The number of bytes to consume
* @return {Buffer} The consumed bytes
* @private
*/
consume(n) {
this._bufferedBytes -= n;
if (n === this._buffers[0].length) return this._buffers.shift();
if (n < this._buffers[0].length) {
const buf = this._buffers[0];
this._buffers[0] = new FastBuffer(
buf.buffer,
buf.byteOffset + n,
buf.length - n
);
return new FastBuffer(buf.buffer, buf.byteOffset, n);
}
const dst = Buffer.allocUnsafe(n);
do {
const buf = this._buffers[0];
const offset = dst.length - n;
if (n >= buf.length) {
dst.set(this._buffers.shift(), offset);
} else {
dst.set(new Uint8Array(buf.buffer, buf.byteOffset, n), offset);
this._buffers[0] = new FastBuffer(
buf.buffer,
buf.byteOffset + n,
buf.length - n
);
}
n -= buf.length;
} while (n > 0);
return dst;
}
/**
* Starts the parsing loop.
*
* @param {Function} cb Callback
* @private
*/
startLoop(cb) {
this._loop = true;
do {
switch (this._state) {
case GET_INFO:
this.getInfo(cb);
break;
case GET_PAYLOAD_LENGTH_16:
this.getPayloadLength16(cb);
break;
case GET_PAYLOAD_LENGTH_64:
this.getPayloadLength64(cb);
break;
case GET_MASK:
this.getMask();
break;
case GET_DATA:
this.getData(cb);
break;
case INFLATING:
case DEFER_EVENT:
this._loop = false;
return;
}
} while (this._loop);
if (!this._errored) cb();
}
/**
* Reads the first two bytes of a frame.
*
* @param {Function} cb Callback
* @private
*/
getInfo(cb) {
if (this._bufferedBytes < 2) {
this._loop = false;
return;
}
const buf = this.consume(2);
if ((buf[0] & 48) !== 0) {
const error = this.createError(
RangeError,
"RSV2 and RSV3 must be clear",
true,
1002,
"WS_ERR_UNEXPECTED_RSV_2_3"
);
cb(error);
return;
}
const compressed2 = (buf[0] & 64) === 64;
if (compressed2 && !this._extensions[PerMessageDeflate.extensionName]) {
const error = this.createError(
RangeError,
"RSV1 must be clear",
true,
1002,
"WS_ERR_UNEXPECTED_RSV_1"
);
cb(error);
return;
}
this._fin = (buf[0] & 128) === 128;
this._opcode = buf[0] & 15;
this._payloadLength = buf[1] & 127;
if (this._opcode === 0) {
if (compressed2) {
const error = this.createError(
RangeError,
"RSV1 must be clear",
true,
1002,
"WS_ERR_UNEXPECTED_RSV_1"
);
cb(error);
return;
}
if (!this._fragmented) {
const error = this.createError(
RangeError,
"invalid opcode 0",
true,
1002,
"WS_ERR_INVALID_OPCODE"
);
cb(error);
return;
}
this._opcode = this._fragmented;
} else if (this._opcode === 1 || this._opcode === 2) {
if (this._fragmented) {
const error = this.createError(
RangeError,
`invalid opcode ${this._opcode}`,
true,
1002,
"WS_ERR_INVALID_OPCODE"
);
cb(error);
return;
}
this._compressed = compressed2;
} else if (this._opcode > 7 && this._opcode < 11) {
if (!this._fin) {
const error = this.createError(
RangeError,
"FIN must be set",
true,
1002,
"WS_ERR_EXPECTED_FIN"
);
cb(error);
return;
}
if (compressed2) {
const error = this.createError(
RangeError,
"RSV1 must be clear",
true,
1002,
"WS_ERR_UNEXPECTED_RSV_1"
);
cb(error);
return;
}
if (this._payloadLength > 125 || this._opcode === 8 && this._payloadLength === 1) {
const error = this.createError(
RangeError,
`invalid payload length ${this._payloadLength}`,
true,
1002,
"WS_ERR_INVALID_CONTROL_PAYLOAD_LENGTH"
);
cb(error);
return;
}
} else {
const error = this.createError(
RangeError,
`invalid opcode ${this._opcode}`,
true,
1002,
"WS_ERR_INVALID_OPCODE"
);
cb(error);
return;
}
if (!this._fin && !this._fragmented) this._fragmented = this._opcode;
this._masked = (buf[1] & 128) === 128;
if (this._isServer) {
if (!this._masked) {
const error = this.createError(
RangeError,
"MASK must be set",
true,
1002,
"WS_ERR_EXPECTED_MASK"
);
cb(error);
return;
}
} else if (this._masked) {
const error = this.createError(
RangeError,
"MASK must be clear",
true,
1002,
"WS_ERR_UNEXPECTED_MASK"
);
cb(error);
return;
}
if (this._payloadLength === 126) this._state = GET_PAYLOAD_LENGTH_16;
else if (this._payloadLength === 127) this._state = GET_PAYLOAD_LENGTH_64;
else this.haveLength(cb);
}
/**
* Gets extended payload length (7+16).
*
* @param {Function} cb Callback
* @private
*/
getPayloadLength16(cb) {
if (this._bufferedBytes < 2) {
this._loop = false;
return;
}
this._payloadLength = this.consume(2).readUInt16BE(0);
this.haveLength(cb);
}
/**
* Gets extended payload length (7+64).
*
* @param {Function} cb Callback
* @private
*/
getPayloadLength64(cb) {
if (this._bufferedBytes < 8) {
this._loop = false;
return;
}
const buf = this.consume(8);
const num = buf.readUInt32BE(0);
if (num > Math.pow(2, 53 - 32) - 1) {
const error = this.createError(
RangeError,
"Unsupported WebSocket frame: payload length > 2^53 - 1",
false,
1009,
"WS_ERR_UNSUPPORTED_DATA_PAYLOAD_LENGTH"
);
cb(error);
return;
}
this._payloadLength = num * Math.pow(2, 32) + buf.readUInt32BE(4);
this.haveLength(cb);
}
/**
* Payload length has been read.
*
* @param {Function} cb Callback
* @private
*/
haveLength(cb) {
if (this._payloadLength && this._opcode < 8) {
this._totalPayloadLength += this._payloadLength;
if (this._totalPayloadLength > this._maxPayload && this._maxPayload > 0) {
const error = this.createError(
RangeError,
"Max payload size exceeded",
false,
1009,
"WS_ERR_UNSUPPORTED_MESSAGE_LENGTH"
);
cb(error);
return;
}
}
if (this._masked) this._state = GET_MASK;
else this._state = GET_DATA;
}
/**
* Reads mask bytes.
*
* @private
*/
getMask() {
if (this._bufferedBytes < 4) {
this._loop = false;
return;
}
this._mask = this.consume(4);
this._state = GET_DATA;
}
/**
* Reads data bytes.
*
* @param {Function} cb Callback
* @private
*/
getData(cb) {
let data = EMPTY_BUFFER;
if (this._payloadLength) {
if (this._bufferedBytes < this._payloadLength) {
this._loop = false;
return;
}
data = this.consume(this._payloadLength);
if (this._masked && (this._mask[0] | this._mask[1] | this._mask[2] | this._mask[3]) !== 0) {
unmask(data, this._mask);
}
}
if (this._opcode > 7) {
this.controlMessage(data, cb);
return;
}
if (this._compressed) {
this._state = INFLATING;
this.decompress(data, cb);
return;
}
if (data.length) {
this._messageLength = this._totalPayloadLength;
this._fragments.push(data);
}
this.dataMessage(cb);
}
/**
* Decompresses data.
*
* @param {Buffer} data Compressed data
* @param {Function} cb Callback
* @private
*/
decompress(data, cb) {
const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
perMessageDeflate.decompress(data, this._fin, (err, buf) => {
if (err) return cb(err);
if (buf.length) {
this._messageLength += buf.length;
if (this._messageLength > this._maxPayload && this._maxPayload > 0) {
const error = this.createError(
RangeError,
"Max payload size exceeded",
false,
1009,
"WS_ERR_UNSUPPORTED_MESSAGE_LENGTH"
);
cb(error);
return;
}
this._fragments.push(buf);
}
this.dataMessage(cb);
if (this._state === GET_INFO) this.startLoop(cb);
});
}
/**
* Handles a data message.
*
* @param {Function} cb Callback
* @private
*/
dataMessage(cb) {
if (!this._fin) {
this._state = GET_INFO;
return;
}
const messageLength = this._messageLength;
const fragments = this._fragments;
this._totalPayloadLength = 0;
this._messageLength = 0;
this._fragmented = 0;
this._fragments = [];
if (this._opcode === 2) {
let data;
if (this._binaryType === "nodebuffer") {
data = concat(fragments, messageLength);
} else if (this._binaryType === "arraybuffer") {
data = toArrayBuffer(concat(fragments, messageLength));
} else if (this._binaryType === "blob") {
data = new Blob(fragments);
} else {
data = fragments;
}
if (this._allowSynchronousEvents) {
this.emit("message", data, true);
this._state = GET_INFO;
} else {
this._state = DEFER_EVENT;
setImmediate(() => {
this.emit("message", data, true);
this._state = GET_INFO;
this.startLoop(cb);
});
}
} else {
const buf = concat(fragments, messageLength);
if (!this._skipUTF8Validation && !isValidUTF8(buf)) {
const error = this.createError(
Error,
"invalid UTF-8 sequence",
true,
1007,
"WS_ERR_INVALID_UTF8"
);
cb(error);
return;
}
if (this._state === INFLATING || this._allowSynchronousEvents) {
this.emit("message", buf, false);
this._state = GET_INFO;
} else {
this._state = DEFER_EVENT;
setImmediate(() => {
this.emit("message", buf, false);
this._state = GET_INFO;
this.startLoop(cb);
});
}
}
}
/**
* Handles a control message.
*
* @param {Buffer} data Data to handle
* @return {(Error|RangeError|undefined)} A possible error
* @private
*/
controlMessage(data, cb) {
if (this._opcode === 8) {
if (data.length === 0) {
this._loop = false;
this.emit("conclude", 1005, EMPTY_BUFFER);
this.end();
} else {
const code = data.readUInt16BE(0);
if (!isValidStatusCode(code)) {
const error = this.createError(
RangeError,
`invalid status code ${code}`,
true,
1002,
"WS_ERR_INVALID_CLOSE_CODE"
);
cb(error);
return;
}
const buf = new FastBuffer(
data.buffer,
data.byteOffset + 2,
data.length - 2
);
if (!this._skipUTF8Validation && !isValidUTF8(buf)) {
const error = this.createError(
Error,
"invalid UTF-8 sequence",
true,
1007,
"WS_ERR_INVALID_UTF8"
);
cb(error);
return;
}
this._loop = false;
this.emit("conclude", code, buf);
this.end();
}
this._state = GET_INFO;
return;
}
if (this._allowSynchronousEvents) {
this.emit(this._opcode === 9 ? "ping" : "pong", data);
this._state = GET_INFO;
} else {
this._state = DEFER_EVENT;
setImmediate(() => {
this.emit(this._opcode === 9 ? "ping" : "pong", data);
this._state = GET_INFO;
this.startLoop(cb);
});
}
}
/**
* Builds an error object.
*
* @param {function(new:Error|RangeError)} ErrorCtor The error constructor
* @param {String} message The error message
* @param {Boolean} prefix Specifies whether or not to add a default prefix to
* `message`
* @param {Number} statusCode The status code
* @param {String} errorCode The exposed error code
* @return {(Error|RangeError)} The error
* @private
*/
createError(ErrorCtor, message, prefix, statusCode, errorCode) {
this._loop = false;
this._errored = true;
const err = new ErrorCtor(
prefix ? `Invalid WebSocket frame: ${message}` : message
);
Error.captureStackTrace(err, this.createError);
err.code = errorCode;
err[kStatusCode] = statusCode;
return err;
}
};
module.exports = Receiver2;
}
});
// ../../node_modules/ws/lib/sender.js
var require_sender = __commonJS({
"../../node_modules/ws/lib/sender.js"(exports, module) {
"use strict";
var { Duplex } = __require("stream");
var { randomFillSync } = __require("crypto");
var PerMessageDeflate = require_permessage_deflate();
var { EMPTY_BUFFER, kWebSocket, NOOP } = require_constants();
var { isBlob, isValidStatusCode } = require_validation();
var { mask: applyMask, toBuffer } = require_buffer_util();
var kByteLength = Symbol("kByteLength");
var maskBuffer = Buffer.alloc(4);
var RANDOM_POOL_SIZE = 8 * 1024;
var randomPool;
var randomPoolPointer = RANDOM_POOL_SIZE;
var DEFAULT = 0;
var DEFLATING = 1;
var GET_BLOB_DATA = 2;
var Sender2 = class _Sender {
/**
* Creates a Sender instance.
*
* @param {Duplex} socket The connection socket
* @param {Object} [extensions] An object containing the negotiated extensions
* @param {Function} [generateMask] The function used to generate the masking
* key
*/
constructor(socket, extensions, generateMask) {
this._extensions = extensions || {};
if (generateMask) {
this._generateMask = generateMask;
this._maskBuffer = Buffer.alloc(4);
}
this._socket = socket;
this._firstFragment = true;
this._compress = false;
this._bufferedBytes = 0;
this._queue = [];
this._state = DEFAULT;
this.onerror = NOOP;
this[kWebSocket] = void 0;
}
/**
* Frames a piece of data according to the HyBi WebSocket protocol.
*
* @param {(Buffer|String)} data The data to frame
* @param {Object} options Options object
* @param {Boolean} [options.fin=false] Specifies whether or not to set the
* FIN bit
* @param {Function} [options.generateMask] The function used to generate the
* masking key
* @param {Boolean} [options.mask=false] Specifies whether or not to mask
* `data`
* @param {Buffer} [options.maskBuffer] The buffer used to store the masking
* key
* @param {Number} options.opcode The opcode
* @param {Boolean} [options.readOnly=false] Specifies whether `data` can be
* modified
* @param {Boolean} [options.rsv1=false] Specifies whether or not to set the
* RSV1 bit
* @return {(Buffer|String)[]} The framed data
* @public
*/
static frame(data, options) {
let mask;
let merge = false;
let offset = 2;
let skipMasking = false;
if (options.mask) {
mask = options.maskBuffer || maskBuffer;
if (options.generateMask) {
options.generateMask(mask);
} else {
if (randomPoolPointer === RANDOM_POOL_SIZE) {
if (randomPool === void 0) {
randomPool = Buffer.alloc(RANDOM_POOL_SIZE);
}
randomFillSync(randomPool, 0, RANDOM_POOL_SIZE);
randomPoolPointer = 0;
}
mask[0] = randomPool[randomPoolPointer++];
mask[1] = randomPool[randomPoolPointer++];
mask[2] = randomPool[randomPoolPointer++];
mask[3] = randomPool[randomPoolPointer++];
}
skipMasking = (mask[0] | mask[1] | mask[2] | mask[3]) === 0;
offset = 6;
}
let dataLength;
if (typeof data === "string") {
if ((!options.mask || skipMasking) && options[kByteLength] !== void 0) {
dataLength = options[kByteLength];
} else {
data = Buffer.from(data);
dataLength = data.length;
}
} else {
dataLength = data.length;
merge = options.mask && options.readOnly && !skipMasking;
}
let payloadLength = dataLength;
if (dataLength >= 65536) {
offset += 8;
payloadLength = 127;
} else if (dataLength > 125) {
offset += 2;
payloadLength = 126;
}
const target = Buffer.allocUnsafe(merge ? dataLength + offset : offset);
target[0] = options.fin ? options.opcode | 128 : options.opcode;
if (options.rsv1) target[0] |= 64;
target[1] = payloadLength;
if (payloadLength === 126) {
target.writeUInt16BE(dataLength, 2);
} else if (payloadLength === 127) {
target[2] = target[3] = 0;
target.writeUIntBE(dataLength, 4, 6);
}
if (!options.mask) return [target, data];
target[1] |= 128;
target[offset - 4] = mask[0];
target[offset - 3] = mask[1];
target[offset - 2] = mask[2];
target[offset - 1] = mask[3];
if (skipMasking) return [target, data];
if (merge) {
applyMask(data, mask, target, offset, dataLength);
return [target];
}
applyMask(data, mask, data, 0, dataLength);
return [target, data];
}
/**
* Sends a close message to the other peer.
*
* @param {Number} [code] The status code component of the body
* @param {(String|Buffer)} [data] The message component of the body
* @param {Boolean} [mask=false] Specifies whether or not to mask the message
* @param {Function} [cb] Callback
* @public
*/
close(code, data, mask, cb) {
let buf;
if (code === void 0) {
buf = EMPTY_BUFFER;
} else if (typeof code !== "number" || !isValidStatusCode(code)) {
throw new TypeError("First argument must be a valid error code number");
} else if (data === void 0 || !data.length) {
buf = Buffer.allocUnsafe(2);
buf.writeUInt16BE(code, 0);
} else {
const length = Buffer.byteLength(data);
if (length > 123) {
throw new RangeError("The message must not be greater than 123 bytes");
}
buf = Buffer.allocUnsafe(2 + length);
buf.writeUInt16BE(code, 0);
if (typeof data === "string") {
buf.write(data, 2);
} else {
buf.set(data, 2);
}
}
const options = {
[kByteLength]: buf.length,
fin: true,
generateMask: this._generateMask,
mask,
maskBuffer: this._maskBuffer,
opcode: 8,
readOnly: false,
rsv1: false
};
if (this._state !== DEFAULT) {
this.enqueue([this.dispatch, buf, false, options, cb]);
} else {
this.sendFrame(_Sender.frame(buf, options), cb);
}
}
/**
* Sends a ping message to the other peer.
*
* @param {*} data The message to send
* @param {Boolean} [mask=false] Specifies whether or not to mask `data`
* @param {Function} [cb] Callback
* @public
*/
ping(data, mask, cb) {
let byteLength;
let readOnly;
if (typeof data === "string") {
byteLength = Buffer.byteLength(data);
readOnly = false;
} else if (isBlob(data)) {
byteLength = data.size;
readOnly = false;
} else {
data = toBuffer(data);
byteLength = data.length;
readOnly = toBuffer.readOnly;
}
if (byteLength > 125) {
throw new RangeError("The data size must not be greater than 125 bytes");
}
const options = {
[kByteLength]: b