Little working example for `navigator.mozTCPSocket.listen`

FxOSHTTPServer.js

/*
PS: 
1. you need simulator > 2.2
2. manifest.app must include:
  "type": "privileged",
  "permissions": {
    "tcp-socket" : {
      "description" : "Create TCP sockets and communicate over them."
    }
*/

function startListen(){
    console.log("Initializing server");
    var socketServer = navigator.mozTCPSocket.listen(8080);
  
    socketServer.onconnect = function(conn){
        console.log("connected", conn);
        conn.send("Ok. Got client on: ", conn.port);
        conn.ondata = function(ev){
            console.log("Got request: ", ev);   
        };
        conn.onclose = function(ev){
            console.log("Client left:", ev);
        }
        conn.close(); //get request and leave; HTTP thingy
    };
    socketServer.onerror = function(ev){
        console.log("Failed to start: ", ev);
    };
  
}

startListen();