78 lines
9.9 KiB
JavaScript
78 lines
9.9 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.sendInParallel = sendInParallel;
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exports.sendMessage = sendMessage;
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var _dgram = _interopRequireDefault(require("dgram"));
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var _net = _interopRequireDefault(require("net"));
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var _nodeUrl = _interopRequireDefault(require("node:url"));
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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async function sendInParallel(addresses, port, request, signal) {
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signal.throwIfAborted();
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return await new Promise((resolve, reject) => {
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const sockets = [];
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let errorCount = 0;
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const onError = err => {
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errorCount++;
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if (errorCount === addresses.length) {
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signal.removeEventListener('abort', onAbort);
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clearSockets();
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reject(err);
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}
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};
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const onMessage = message => {
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signal.removeEventListener('abort', onAbort);
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clearSockets();
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resolve(message);
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};
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const onAbort = () => {
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clearSockets();
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reject(signal.reason);
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};
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const clearSockets = () => {
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for (const socket of sockets) {
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socket.removeListener('error', onError);
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socket.removeListener('message', onMessage);
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socket.close();
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}
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};
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signal.addEventListener('abort', onAbort, {
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once: true
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});
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for (let j = 0; j < addresses.length; j++) {
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const udpType = addresses[j].family === 6 ? 'udp6' : 'udp4';
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const socket = _dgram.default.createSocket(udpType);
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sockets.push(socket);
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socket.on('error', onError);
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socket.on('message', onMessage);
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socket.send(request, 0, request.length, port, addresses[j].address);
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}
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});
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}
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async function sendMessage(host, port, lookup, signal, request) {
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signal.throwIfAborted();
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let addresses;
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if (_net.default.isIP(host)) {
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addresses = [{
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address: host,
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family: _net.default.isIPv6(host) ? 6 : 4
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}];
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} else {
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addresses = await new Promise((resolve, reject) => {
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const onAbort = () => {
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reject(signal.reason);
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};
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const domainInASCII = _nodeUrl.default.domainToASCII(host);
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lookup(domainInASCII === '' ? host : domainInASCII, {
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all: true
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}, (err, addresses) => {
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signal.removeEventListener('abort', onAbort);
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err ? reject(err) : resolve(addresses);
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});
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});
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}
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return await sendInParallel(addresses, port, request, signal);
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}
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