public async Task Connect(EndPoint destination, IDuplexPipe client, IDuplexPipe server)
{
var addrMem = server.Output.GetMemory(512);
var addrLen = Socks5Message.SerializeAddress(addrMem, destination);
server.Output.Advance(addrLen);
await DuplexPipe.CopyDuplexPipe(client, server);
}
public async Task Connect(EndPoint destination, IDuplexPipe client, IDuplexPipe server)
{
var pmp = new ProtocolMessagePipe(server);
await pmp.WriteAsync(new Socks5VersionIdentifierMessage
{
Auth = _credential == null ? new [] { Socks5Message.AuthNone } : new [] { Socks5Message.AuthNone, Socks5Message.AuthUserPass }
});
var msm = await pmp.ReadAsync <Socks5MethodSelectionMessage>();
switch (msm.SelectedAuth)
{
case Socks5Message.AuthNone:
break;
case Socks5Message.AuthUserPass:
Debug.Assert(_credential != null);
var name = _credential.UserName;
var password = _credential.Password;
await pmp.WriteAsync(new Socks5UserPasswordRequestMessage
{
User = Encoding.UTF8.GetBytes(name),
Password = Encoding.UTF8.GetBytes(password),
});
var upResp = await pmp.ReadAsync <Socks5UserPasswordResponseMessage>();
if (!upResp.Success)
{
throw new UnauthorizedAccessException("Wrong username / password");
}
break;
default:
throw new NotSupportedException("Server not support our authencation method");
}
await pmp.WriteAsync(new Socks5RequestMessage
{
Command = Socks5Message.CmdConnect,
EndPoint = destination,
});
var reply = await pmp.ReadAsync <Socks5ReplyMessage>();
if (reply.Reply != Socks5Message.ReplySucceed)
{
throw new Exception();
}
await DuplexPipe.CopyDuplexPipe(client, server);
}
