worker.js

// Import the SHA1 library
importScripts(`hashes.js`);

// Execute on message from the main script
onmessage = (event) => {
    // Gets the data from the event.data variable
    const [username, rigid, workerVer, miningkey] = event.data;

    // Create a connection to the server
    const socket = new WebSocket(`wss://magi.duinocoin.com:8443/`);

    // Execute on message from the server
    socket.onmessage = (event) => {
        // If the server sends it's version, it's ready to send a job
        if (event.data.startsWith(`3.`)) {
            // Show the server version in console
            console.log(
                `CPU${workerVer}: The server is on version ${event.data}`,
            );
            // Show in the console that we're requesting a job
            console.log(`CPU${workerVer}: Requesting a job...\n`);
            // Asks for a job
            socket.send(`JOB,${username},LOW${miningkey !== null ? `,` + miningkey : ``}`);
        }
        // If our share is correct
        else if (event.data === `GOOD\n`) {
            // Show in the console that the share was correct
            console.log(`CPU${workerVer}: and the share was correct!\n`);
            // Show in the console that we're requesting a new job
            console.log(`CPU${workerVer}: Requesting a new job...\n`);
            // Ask for a new job
            socket.send(`JOB,${username},LOW${miningkey !== null ? `,` + miningkey : ``}`);
        }
        // If our share is incorrect
        else if (event.data === `BAD\n`) {
            // Show in the console that the share was wrong
            console.log(`CPU${workerVer}: and the share was wrong...\n`);
            // Show in the console that we're requesting a new job
            console.log(`CPU${workerVer}: Requesting a new job...\n`);
            // Ask for a new job
            socket.send(`JOB,${username},LOW${miningkey !== null ? `,` + miningkey : ``}`);
        }
        // If the server sends a job
        else {
            // Show in console that we recieved a new job, and shows the contents
            console.log(
                `CPU${workerVer}: New job recieved! It contains: ${event.data}`,
            );
            // Get the job from the server message
            const job = event.data.split(`,`);
            // Get the start time in milliseconds
            const startingTime = performance.now();
            // Start mining
            for (let result = 0; result < 100 * job[2] + 1; result++) {
                // A possibly correct SHA1 hash for job[0] + the result
                ducos1 = new Hashes.SHA1().hex(job[0] + result);
                // If the hash is correct
                if (job[1] === ducos1) {
                    // The time it took to generate the correct hash, then convert it from milliseconds to seconds
                    const timeDifference =
                        (performance.now() - startingTime) / 1000;
                    // Calulate the hashrate
                    const hashrate = (result / timeDifference).toFixed(2);
                    // Print the hashrate in the console
                    console.log(
                        `CPU${workerVer}: The hashrate is ${hashrate} H/s. Sending the result back to the server...`,
                    );
                    // Send the result back to the server
                    socket.send(
                        `${result},${hashrate},Duino-JS v4.1 by sys-256,${rigid}`,
                    );
                    // Break the script so it stops calculating the other possible hashes
                    break;
                }
            }
        }
    };
};