function proxyPort(srcport,destServer,destport)
{
var server = net.createServer(function(c) { //'connection' listener

c.on('end',function() {
    console.log('src disconnected');
});
var client = net.connect({port: destport,host:destServer},function() { //'connect' listener
     console.log('ok....');
     c.on('data',function(data) {
         console.log(data.length);
       client.write(data);
     });
});
client.on('error',function(err) {
 console.log("dest=" + err);
 c.destroy();
});
c.on('error',function(err) {
 console.log("src" + err);
 client.destroy();
});
client.on('data',function(data) {
 c.write(data);
});
client.on('end',function() {
 console.log('dest disconnected ');
});

});
server.listen(srcport,function() { //'listening' listener
console.log('server bound' + srcport);
});
}

var params = process.argv;
if(params.length != 5){
console.log("node port.js srcport destserver destport ");
return;
}

proxyPort(params[2],params[3],params[4]);

console.log(process.argv);