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Program.cs
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using System.IO;
using System;
using System.Net.Sockets;
using System.Collections.Generic;
using System.Net;
using UdtSharp;
namespace p2pcopy
{
class Program
{
static void Main(string[] args)
{
CommandLineArguments cla = CommandLineArguments.Parse(args);
if (cla == null || (!cla.Sender && !cla.Receiver))
{
CommandLineArguments.ShowUsage();
Environment.Exit(1);
return;
}
else if (cla.Sender && String.IsNullOrEmpty(cla.File))
{
CommandLineArguments.ShowUsage();
Environment.Exit(1);
return;
}
if (cla.File != null && (!(File.Exists(cla.File))))
{
Console.Error.WriteLine($"File {cla.File} does not exist");
Environment.Exit(2);
return;
}
string remoteIp;
int remotePort;
Socket socket = new Socket(
AddressFamily.InterNetwork,
SocketType.Dgram, ProtocolType.Udp);
try
{
if (cla.LocalPort != -1)
{
Console.WriteLine("Using local port: {0}", cla.LocalPort);
}
else
{
cla.LocalPort = 0;
}
socket.Bind(new IPEndPoint(IPAddress.Any, cla.LocalPort));
P2pEndPoint p2pEndPoint = GetExternalEndPoint(socket);
if (p2pEndPoint == null)
return;
Console.WriteLine("Tell this to your peer: {0}", p2pEndPoint.External.ToString());
TextCopy.ClipboardService.SetText(p2pEndPoint.External.ToString());
Console.WriteLine();
Console.WriteLine();
Console.Write("Enter the ip:port of your peer: ");
string peer = Console.ReadLine();
if (string.IsNullOrEmpty(peer))
{
Console.WriteLine("Invalid ip:port entered");
return;
}
// try again to connect to external to "reopen" port
GetExternalEndPoint(socket);
ParseRemoteAddr(peer, out remoteIp, out remotePort);
UdtSocket connection = PeerConnect(socket, remoteIp, remotePort);
if (connection == null)
{
Console.Error.WriteLine("Failed to establish P2P conn to {0}", remoteIp);
Environment.Exit(3);
return;
}
try
{
if (cla.Sender)
{
Sender.Run(connection, cla.File, cla.Verbose);
return;
}
Receiver.Run(connection);
}
finally
{
connection.Close();
}
}
finally
{
socket.Close();
}
}
class CommandLineArguments
{
internal bool Sender = false;
internal bool Receiver = false;
internal string File;
internal int LocalPort = -1;
internal bool Verbose = false;
static internal CommandLineArguments Parse(string[] args)
{
CommandLineArguments result = new CommandLineArguments();
int i = 0;
while (i < args.Length)
{
string arg = args[i++];
switch (arg)
{
case "sender":
result.Sender = true;
break;
case "receiver":
result.Receiver = true;
break;
case "--verbose":
result.Verbose = true;
break;
case "--file":
if (args.Length == i) return null;
result.File = args[i++];
break;
case "--localport":
if (args.Length == i) return null;
result.LocalPort = int.Parse(args[i++]);
break;
case "help":
return null;
}
}
return result;
}
static internal void ShowUsage()
{
Console.WriteLine("p2pcopy [receiver|sender --file file_to_send]");
}
}
static void ParseRemoteAddr(string addr, out string remoteIp, out int port)
{
string[] split = addr.Split(':');
remoteIp = split[0];
port = int.Parse(split[1]);
}
class P2pEndPoint
{
internal IPEndPoint External;
internal IPEndPoint Internal;
}
static P2pEndPoint GetExternalEndPoint(Socket socket)
{
// https://gist.github.com/zziuni/3741933
List<Tuple<string, int>> stunServers = new List<Tuple<string, int>>();
stunServers.Add(new Tuple<string, int>("stun.l.google.com", 19302));
stunServers.Add(new Tuple<string, int>("iphone-stun.strato-iphone.de", 3478));
stunServers.Add(new Tuple<string, int>("numb.viagenie.ca", 3478));
stunServers.Add(new Tuple<string, int>("s1.taraba.net", 3478));
stunServers.Add(new Tuple<string, int>("s2.taraba.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.12connect.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.12voip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.1und1.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.2talk.co.nz", 3478));
stunServers.Add(new Tuple<string, int>("stun.2talk.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.3clogic.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.3cx.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.a-mm.tv", 3478));
stunServers.Add(new Tuple<string, int>("stun.aa.net.uk", 3478));
stunServers.Add(new Tuple<string, int>("stun.acrobits.cz", 3478));
stunServers.Add(new Tuple<string, int>("stun.actionvoip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.advfn.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.aeta-audio.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.aeta.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.alltel.com.au", 3478));
stunServers.Add(new Tuple<string, int>("stun.altar.com.pl", 3478));
stunServers.Add(new Tuple<string, int>("stun.annatel.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.antisip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.arbuz.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.avigora.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.avigora.fr", 3478));
stunServers.Add(new Tuple<string, int>("stun.awa-shima.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.awt.be", 3478));
stunServers.Add(new Tuple<string, int>("stun.b2b2c.ca", 3478));
stunServers.Add(new Tuple<string, int>("stun.bahnhof.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.barracuda.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.bluesip.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.bmwgs.cz", 3478));
stunServers.Add(new Tuple<string, int>("stun.botonakis.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.budgetphone.nl", 3478));
stunServers.Add(new Tuple<string, int>("stun.budgetsip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.cablenet-as.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.callromania.ro", 3478));
stunServers.Add(new Tuple<string, int>("stun.callwithus.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.cbsys.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.chathelp.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.cheapvoip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.ciktel.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.cloopen.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.colouredlines.com.au", 3478));
stunServers.Add(new Tuple<string, int>("stun.comfi.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.commpeak.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.comtube.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.comtube.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.cope.es", 3478));
stunServers.Add(new Tuple<string, int>("stun.counterpath.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.counterpath.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.cryptonit.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.darioflaccovio.it", 3478));
stunServers.Add(new Tuple<string, int>("stun.datamanagement.it", 3478));
stunServers.Add(new Tuple<string, int>("stun.dcalling.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.decanet.fr", 3478));
stunServers.Add(new Tuple<string, int>("stun.demos.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.develz.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.dingaling.ca", 3478));
stunServers.Add(new Tuple<string, int>("stun.doublerobotics.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.drogon.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.duocom.es", 3478));
stunServers.Add(new Tuple<string, int>("stun.dus.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.e-fon.ch", 3478));
stunServers.Add(new Tuple<string, int>("stun.easybell.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.easycall.pl", 3478));
stunServers.Add(new Tuple<string, int>("stun.easyvoip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.efficace-factory.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.einsundeins.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.einsundeins.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.ekiga.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.epygi.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.etoilediese.fr", 3478));
stunServers.Add(new Tuple<string, int>("stun.eyeball.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.faktortel.com.au", 3478));
stunServers.Add(new Tuple<string, int>("stun.freecall.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.freeswitch.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.freevoipdeal.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.fuzemeeting.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.gmx.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.gmx.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.gradwell.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.halonet.pl", 3478));
stunServers.Add(new Tuple<string, int>("stun.hellonanu.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.hoiio.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.hosteurope.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.ideasip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.imesh.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.infra.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.internetcalls.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.intervoip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.ipcomms.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.ipfire.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.ippi.fr", 3478));
stunServers.Add(new Tuple<string, int>("stun.ipshka.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.iptel.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.irian.at", 3478));
stunServers.Add(new Tuple<string, int>("stun.it1.hr", 3478));
stunServers.Add(new Tuple<string, int>("stun.ivao.aero", 3478));
stunServers.Add(new Tuple<string, int>("stun.jappix.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.jumblo.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.justvoip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.kanet.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.kiwilink.co.nz", 3478));
stunServers.Add(new Tuple<string, int>("stun.kundenserver.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.linea7.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.linphone.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.liveo.fr", 3478));
stunServers.Add(new Tuple<string, int>("stun.lowratevoip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.lugosoft.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.lundimatin.fr", 3478));
stunServers.Add(new Tuple<string, int>("stun.magnet.ie", 3478));
stunServers.Add(new Tuple<string, int>("stun.manle.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.mgn.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.mit.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.mitake.com.tw", 3478));
stunServers.Add(new Tuple<string, int>("stun.miwifi.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.modulus.gr", 3478));
stunServers.Add(new Tuple<string, int>("stun.mozcom.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.myvoiptraffic.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.mywatson.it", 3478));
stunServers.Add(new Tuple<string, int>("stun.nas.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.neotel.co.za", 3478));
stunServers.Add(new Tuple<string, int>("stun.netappel.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.netappel.fr", 3478));
stunServers.Add(new Tuple<string, int>("stun.netgsm.com.tr", 3478));
stunServers.Add(new Tuple<string, int>("stun.nfon.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.noblogs.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.noc.ams-ix.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.node4.co.uk", 3478));
stunServers.Add(new Tuple<string, int>("stun.nonoh.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.nottingham.ac.uk", 3478));
stunServers.Add(new Tuple<string, int>("stun.nova.is", 3478));
stunServers.Add(new Tuple<string, int>("stun.nventure.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.on.net.mk", 3478));
stunServers.Add(new Tuple<string, int>("stun.ooma.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.ooonet.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.oriontelekom.rs", 3478));
stunServers.Add(new Tuple<string, int>("stun.outland-net.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.ozekiphone.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.patlive.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.personal-voip.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.petcube.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.phone.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.phoneserve.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.pjsip.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.poivy.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.powerpbx.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.powervoip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.ppdi.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.prizee.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.qq.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.qvod.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.rackco.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.rapidnet.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.rb-net.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.refint.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.remote-learner.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.rixtelecom.se", 3478));
stunServers.Add(new Tuple<string, int>("stun.rockenstein.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.rolmail.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.rounds.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.rynga.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.samsungsmartcam.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.schlund.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.services.mozilla.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.sigmavoip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.sip.us", 3478));
stunServers.Add(new Tuple<string, int>("stun.sipdiscount.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.sipgate.net", 10000));
stunServers.Add(new Tuple<string, int>("stun.sipgate.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.siplogin.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.sipnet.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.sipnet.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.siportal.it", 3478));
stunServers.Add(new Tuple<string, int>("stun.sippeer.dk", 3478));
stunServers.Add(new Tuple<string, int>("stun.siptraffic.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.skylink.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.sma.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.smartvoip.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.smsdiscount.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.snafu.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.softjoys.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.solcon.nl", 3478));
stunServers.Add(new Tuple<string, int>("stun.solnet.ch", 3478));
stunServers.Add(new Tuple<string, int>("stun.sonetel.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.sonetel.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.sovtest.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.speedy.com.ar", 3478));
stunServers.Add(new Tuple<string, int>("stun.spokn.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.srce.hr", 3478));
stunServers.Add(new Tuple<string, int>("stun.ssl7.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.stunprotocol.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.symform.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.symplicity.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.sysadminman.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.t-online.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.tagan.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.tatneft.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.teachercreated.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.tel.lu", 3478));
stunServers.Add(new Tuple<string, int>("stun.telbo.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.telefacil.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.tis-dialog.ru", 3478));
stunServers.Add(new Tuple<string, int>("stun.tng.de", 3478));
stunServers.Add(new Tuple<string, int>("stun.twt.it", 3478));
stunServers.Add(new Tuple<string, int>("stun.u-blox.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.ucallweconn.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.ucsb.edu", 3478));
stunServers.Add(new Tuple<string, int>("stun.ucw.cz", 3478));
stunServers.Add(new Tuple<string, int>("stun.uls.co.za", 3478));
stunServers.Add(new Tuple<string, int>("stun.unseen.is", 3478));
stunServers.Add(new Tuple<string, int>("stun.usfamily.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.veoh.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.vidyo.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.vipgroup.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.virtual-call.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.viva.gr", 3478));
stunServers.Add(new Tuple<string, int>("stun.vivox.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.vline.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.vo.lu", 3478));
stunServers.Add(new Tuple<string, int>("stun.vodafone.ro", 3478));
stunServers.Add(new Tuple<string, int>("stun.voicetrading.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voip.aebc.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voip.blackberry.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voip.eutelia.it", 3478));
stunServers.Add(new Tuple<string, int>("stun.voiparound.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipblast.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipbuster.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipbusterpro.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipcheap.co.uk", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipcheap.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipfibre.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipgain.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipgate.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipinfocenter.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipplanet.nl", 3478));
stunServers.Add(new Tuple<string, int>("stun.voippro.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipraider.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipstunt.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipwise.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voipzoom.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.vopium.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voxgratia.org", 3478));
stunServers.Add(new Tuple<string, int>("stun.voxox.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.voys.nl", 3478));
stunServers.Add(new Tuple<string, int>("stun.voztele.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.vyke.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.webcalldirect.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.whoi.edu", 3478));
stunServers.Add(new Tuple<string, int>("stun.wifirst.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.wwdl.net", 3478));
stunServers.Add(new Tuple<string, int>("stun.xs4all.nl", 3478));
stunServers.Add(new Tuple<string, int>("stun.xtratelecom.es", 3478));
stunServers.Add(new Tuple<string, int>("stun.yesss.at", 3478));
stunServers.Add(new Tuple<string, int>("stun.zadarma.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.zadv.com", 3478));
stunServers.Add(new Tuple<string, int>("stun.zoiper.com", 3478));
stunServers.Add(new Tuple<string, int>("stun1.faktortel.com.au", 3478));
stunServers.Add(new Tuple<string, int>("stun1.l.google.com", 19302));
stunServers.Add(new Tuple<string, int>("stun1.voiceeclipse.net", 3478));
stunServers.Add(new Tuple<string, int>("stun2.l.google.com", 19302));
stunServers.Add(new Tuple<string, int>("stun3.l.google.com", 19302));
stunServers.Add(new Tuple<string, int>("stun4.l.google.com", 19302));
stunServers.Add(new Tuple<string, int>("stunserver.org", 3478));
Console.WriteLine("Contacting STUN servers to obtain your IP");
foreach (Tuple<string, int> server in stunServers)
{
string host = server.Item1;
int port = server.Item2;
StunResult externalEndPoint = StunClient.Query(host, port, socket);
if (externalEndPoint.NetType == StunNetType.UdpBlocked)
{
continue;
}
Console.WriteLine("Your firewall is {0}", externalEndPoint.NetType.ToString());
return new P2pEndPoint()
{
External = externalEndPoint.PublicEndPoint,
Internal = (socket.LocalEndPoint as IPEndPoint)
};
}
Console.WriteLine("Could not find a working STUN server");
return null;
}
static int SleepTime(DateTime now)
{
List<int> seconds = new List<int>() {10, 20, 30, 40, 50, 60};
int next = seconds.Find(x => x > now.Second);
return next - now.Second;
}
static UdtSocket PeerConnect(Socket socket, string remoteAddr, int remotePort)
{
bool bConnected = false;
int retry = 0;
UdtSocket client = null;
while (!bConnected)
{
try
{
DateTime now = InternetTime.Get();
int sleepTimeToSync = SleepTime(now);
Console.WriteLine("[{0}] - Waiting {1} sec to sync with other peer",
now.ToLongTimeString(),
sleepTimeToSync);
System.Threading.Thread.Sleep(sleepTimeToSync * 1000);
GetExternalEndPoint(socket);
if (client != null)
client.Close();
client = new UdtSocket(socket.AddressFamily, socket.SocketType);
client.Bind(socket);
Console.Write("\r{0} - Trying to connect to {1}:{2}. ",
retry++, remoteAddr, remotePort);
client.Connect(new IPEndPoint(IPAddress.Parse(remoteAddr), remotePort));
Console.WriteLine("Connected successfully to {0}:{1}",
remoteAddr, remotePort);
bConnected = true;
}
catch (Exception e)
{
Console.Write(e.Message.Replace(Environment.NewLine, ". "));
}
}
return client;
}
}
}