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Mack Baczynski

Mack Baczynski

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  1. Open a chrome web browser

  2. Open the inspector (right-click>inspect)

  3. Choose the ‘Console’ tab

  4. paste in this block of code

    Code Block
    const iceServers = [
    {
        urls: 'stun:stun.l.google.com:19302?transport=udp'
    },
];

const pc = new RTCPeerConnection({
	iceServers
});

pc.onicecandidate = (e) => {
    if (!e.candidate) return;

    // Display candidate string e.g
    // candidate:842163049 1 udp 1677729535 XXX.XXX.XX.XXXX 58481 typ srflx raddr 0.0.0.0 rport 0 generation 0 ufrag sXP5 network-cost 999
    console.log(e.candidate.candidate);

    if(e.candidate.type == "srflx"){
        console.log("The STUN server is reachable!");
        console.log(`   Your Public IP Address is: ${e.candidate.address}`);
    }
};

// Log errors:
// Remember that in most of the cases, even if its working, you will find a STUN host lookup received error
// Chrome tried to look up the IPv6 DNS record for server and got an error in that process. However, it may still be accessible through the IPv4 address
pc.onicecandidateerror = (e) => {
    console.error(e);
};

pc.createDataChannel('stun-test');
pc.createOffer().then(offer => pc.setLocalDescription(offer));

  5. Press enter

  6. Observe the response

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