@reclaimprotocol/tls/lib/scripts/handshake.js

WebCrypto Based Cross Platform TLS

import { Socket } from 'net';
import { pino } from 'pino';
import { makeTLSClient, uint8ArrayToStr } from "../index.js";
const LOGGER = pino();
LOGGER.level = process.env.LOG_LEVEL || 'info';
const host = readArg('--host');
if (!host) {
    console.error('Please provide a host to connect to using --host <hostname>');
    process.exit(1);
}
const port = Number(readArg('--port') || 443);
const socket = new Socket();
await new Promise((resolve, reject) => {
    const tls = makeTLSClient({
        host,
        verifyServerCertificate: true,
        logger: LOGGER,
        // write raw bytes to the socket
        async write({ header, content }) {
            socket.write(header);
            socket.write(content);
        },
        async onHandshake() {
            console.log('handshake completed successfully');
            await tls.end();
            socket.end();
        },
        onApplicationData(plaintext) {
            const str = uint8ArrayToStr(plaintext);
            console.log('received application data: ', str);
        },
        onTlsEnd(error) {
            if (error) {
                reject(error);
                return;
            }
            resolve();
            console.error('TLS connect ended: ', error);
        }
    });
    socket.on('data', tls.handleReceivedBytes);
    // start handshake as soon as the socket connects
    socket.on('connect', () => tls.startHandshake());
    socket.once('error', (err) => reject(err));
    // use the TCP socket to connect to the server
    socket.connect({ host, port });
});
console.log(`Connected to ${host} successfully`);
function readArg(arg) {
    const index = process.argv.indexOf(arg);
    if (index === -1) {
        return undefined;
    }
    return process.argv[index + 1] || '';
}