public async Task ProxyTest()
{
using var proxy = ProxyFactory.CreateProxy(ProxyType.Socks5, IPEndPoint.Parse(@"0.0.0.0:0"), IPEndPoint.Parse(@"127.0.0.1:10000"));
using var client = new StunClient5389UDP(@"stun.syncthing.net", 3478, new IPEndPoint(IPAddress.Any, 0), proxy);
var result = await client.QueryAsync();
Assert.AreEqual(result.BindingTestResult, BindingTestResult.Success);
Assert.IsNotNull(result.LocalEndPoint);
Assert.IsNotNull(result.PublicEndPoint);
Assert.IsNotNull(result.OtherEndPoint);
Assert.AreNotEqual(result.LocalEndPoint.Address, IPAddress.Any);
Assert.IsTrue(result.MappingBehavior == MappingBehavior.Direct ||
result.MappingBehavior == MappingBehavior.EndpointIndependent ||
result.MappingBehavior == MappingBehavior.AddressDependent ||
result.MappingBehavior == MappingBehavior.AddressAndPortDependent);
Assert.IsTrue(result.FilteringBehavior == FilteringBehavior.EndpointIndependent ||
result.FilteringBehavior == FilteringBehavior.AddressDependent ||
result.FilteringBehavior == FilteringBehavior.AddressAndPortDependent);
Console.WriteLine(result.BindingTestResult);
Console.WriteLine(result.MappingBehavior);
Console.WriteLine(result.FilteringBehavior);
Console.WriteLine(result.OtherEndPoint);
Console.WriteLine(result.LocalEndPoint);
Console.WriteLine(result.PublicEndPoint);
}
private async Task DiscoveryNatTypeImpl(CancellationToken token)
{
var server = new StunServer();
if (!server.Parse(_config.StunServer))
{
throw new Exception(@"Wrong STUN Server!");
}
using var proxy = ProxyFactory.CreateProxy(
_config.ProxyType,
Result5389.LocalEndPoint,
NetUtils.ParseEndpoint(_config.ProxyServer),
_config.ProxyUser, _config.ProxyPassword
);
using var client = new StunClient5389UDP(server.Hostname, server.Port, Result5389.LocalEndPoint, proxy);
Result5389 = client.Status;
await client.QueryAsync();
var cache = new StunResult5389();
cache.Clone(client.Status);
cache.LocalEndPoint = client.LocalEndPoint;
Result5389 = cache;
}
/// <summary>
/// stun.qq.com 3478 0.0.0.0:0
/// </summary>
private static async Task Main(string[] args)
{
var server = @"stun.syncthing.net";
ushort port = 3478;
IPEndPoint?local = null;
if (args.Length > 0 && (Uri.CheckHostName(args[0]) == UriHostNameType.Dns || IPAddress.TryParse(args[0], out _)))
{
server = args[0];
}
if (args.Length > 1)
{
ushort.TryParse(args[1], out port);
}
if (args.Length > 2)
{
local = NetUtils.ParseEndpoint(args[2]);
}
using var client = new StunClient5389UDP(server, port, local);
await client.QueryAsync();
var res = client.Status;
Console.WriteLine($@"Other address is {res.OtherEndPoint}");
Console.WriteLine($@"Binding test: {res.BindingTestResult}");
Console.WriteLine($@"Local address: {res.LocalEndPoint}");
Console.WriteLine($@"Mapped address: {res.PublicEndPoint}");
Console.WriteLine($@"Nat mapping behavior: {res.MappingBehavior}");
Console.WriteLine($@"Nat filtering behavior: {res.FilteringBehavior}");
}
public async Task BindingTest()
{
using var client = new StunClient5389UDP(@"stun.syncthing.net", 3478, new IPEndPoint(IPAddress.Any, 0));
var result = await client.BindingTestAsync();
Assert.AreEqual(result.BindingTestResult, BindingTestResult.Success);
Assert.IsNotNull(result.LocalEndPoint);
Assert.IsNotNull(result.PublicEndPoint);
Assert.IsNotNull(result.OtherEndPoint);
Assert.AreNotEqual(result.LocalEndPoint.Address, IPAddress.Any);
Assert.AreEqual(result.MappingBehavior, MappingBehavior.Unknown);
Assert.AreEqual(result.FilteringBehavior, FilteringBehavior.Unknown);
}
public static async Task <NatTypeTestResult> DiscoveryNatTypeAsync(Socks5Server socks5, CancellationToken ctx = default)
{
var stunServer = Global.Settings.STUN_Server;
var port = (ushort)Global.Settings.STUN_Server_Port;
var local = new IPEndPoint(IPAddress.Any, 0);
var socks5Option = new Socks5CreateOption
{
Address = await DnsUtils.LookupAsync(socks5.Hostname),
Port = socks5.Port,
UsernamePassword = new UsernamePassword
{
UserName = socks5.Username,
Password = socks5.Password
}
};
var ip = await DnsUtils.LookupAsync(stunServer);
if (ip == null)
{
return(new NatTypeTestResult {
Result = "Wrong STUN Server!"
});
}
using IUdpProxy proxy = ProxyFactory.CreateProxy(ProxyType.Socks5, new IPEndPoint(IPAddress.Loopback, 0), socks5Option);
using var client = new StunClient5389UDP(new IPEndPoint(ip, port), local, proxy);
await client.ConnectProxyAsync(ctx);
try
{
await client.QueryAsync(ctx);
}
finally
{
await client.CloseProxyAsync(ctx);
}
var res = client.State;
var result = GetSimpleResult(res);
return(new NatTypeTestResult
{
Result = result,
LocalEnd = res.LocalEndPoint?.ToString(),
PublicEnd = res.PublicEndPoint?.ToString()
});
}
public async Task FilteringBehaviorTest()
{
using var client = new StunClient5389UDP(@"stun.syncthing.net", 3478, new IPEndPoint(IPAddress.Any, 0));
await client.FilteringBehaviorTestAsync();
var result = client.Status;
Assert.AreEqual(result.BindingTestResult, BindingTestResult.Success);
Assert.IsNotNull(result.LocalEndPoint);
Assert.IsNotNull(result.PublicEndPoint);
Assert.IsNotNull(result.OtherEndPoint);
Assert.AreNotEqual(result.LocalEndPoint !.Address, IPAddress.Any);
Assert.AreEqual(result.MappingBehavior, MappingBehavior.Unknown);
Assert.IsTrue(result.FilteringBehavior is
FilteringBehavior.EndpointIndependent or
FilteringBehavior.AddressDependent or
FilteringBehavior.AddressAndPortDependent
);
}
public async Task CombiningTest()
{
using var client = new StunClient5389UDP(@"stun.syncthing.net", 3478, new IPEndPoint(IPAddress.Any, 0));
var result = await client.QueryAsync();
Assert.AreEqual(result.BindingTestResult, BindingTestResult.Success);
Assert.IsNotNull(result.LocalEndPoint);
Assert.IsNotNull(result.PublicEndPoint);
Assert.IsNotNull(result.OtherEndPoint);
Assert.AreNotEqual(result.LocalEndPoint.Address, IPAddress.Any);
Assert.IsTrue(result.MappingBehavior == MappingBehavior.Direct ||
result.MappingBehavior == MappingBehavior.EndpointIndependent ||
result.MappingBehavior == MappingBehavior.AddressDependent ||
result.MappingBehavior == MappingBehavior.AddressAndPortDependent
);
Assert.IsTrue(result.FilteringBehavior == FilteringBehavior.EndpointIndependent ||
result.FilteringBehavior == FilteringBehavior.AddressDependent ||
result.FilteringBehavior == FilteringBehavior.AddressAndPortDependent
);
}
/// <summary>
/// stun.qq.com 3478 0.0.0.0:0
/// </summary>
private static async Task Main(string[] args)
{
var server = @"stun.syncthing.net";
ushort port = 3478;
IPEndPoint?local = null;
if (args.Length > 0 &&
(Uri.CheckHostName(args[0]) == UriHostNameType.Dns || IPAddress.TryParse(args[0], out _)))
{
server = args[0];
}
if (args.Length > 1)
{
ushort.TryParse(args[1], out port);
}
if (args.Length > 2)
{
local = NetUtils.ParseEndpoint(args[2]);
}
using var client = new StunClient5389UDP(server, port, local);
await client.QueryAsync();
var res = client.Status;
Console.WriteLine($@"Other address is {res.OtherEndPoint}");
Console.WriteLine($@"Binding test: {res.BindingTestResult}");
Console.WriteLine($@"Local address: {res.LocalEndPoint}");
Console.WriteLine($@"Mapped address: {res.PublicEndPoint}");
Console.WriteLine($@"Nat mapping behavior: {res.MappingBehavior}");
Console.WriteLine($@"Nat filtering behavior: {res.FilteringBehavior}");
var result = "error";
switch (res.FilteringBehavior)
{
case STUN.Enums.FilteringBehavior.Unknown:
case STUN.Enums.FilteringBehavior.UnsupportedServer:
case STUN.Enums.FilteringBehavior.Fail:
result = res.FilteringBehavior.ToString();
break;
case STUN.Enums.FilteringBehavior.EndpointIndependent:
switch (res.MappingBehavior)
{
case STUN.Enums.MappingBehavior.EndpointIndependent:
result = "1";
break;
case STUN.Enums.MappingBehavior.AddressDependent:
case STUN.Enums.MappingBehavior.AddressAndPortDependent:
result = "2";
break;
}
break;
case STUN.Enums.FilteringBehavior.AddressDependent:
result = "3";
break;
case STUN.Enums.FilteringBehavior.AddressAndPortDependent:
result = "4";
break;
}
Console.WriteLine($@"result: {result}");
}
public static async Task <StunResult5389> NatBehaviorDiscovery(string server, ushort port, IPEndPoint local)
{
// proxy is not supported yet
using var client = new StunClient5389UDP(server, port, local);
return(await client.QueryAsync());
}