public async Task Ipv6()
{
var commandReply = new CommandReply(
CommandReplyType.Succeeded,
new IPEndPoint(IPAddress.Parse("2001:db8:85a3:8d3:1319:8a2e:370:7348"), 65534));
var stream = new MemoryWriteOnlyStream();
await commandReply.WriteToAsync(stream, this._bufferPool).ConfigureAwait(true);
stream.ToArray().Should().Equal(
5,
(byte)CommandReplyType.Succeeded,
0,
(byte)AddressType.Ipv6,
32,
1,
13,
184,
133,
163,
8,
211,
19,
25,
138,
46,
3,
112,
115,
72,
255,
254);
}
public async Task Domain()
{
var commandReply = new CommandReply(CommandReplyType.Succeeded, new DnsEndPoint("google.com", 65534));
var stream = new MemoryWriteOnlyStream();
await commandReply.WriteToAsync(stream, this._bufferPool).ConfigureAwait(true);
stream.ToArray().Should().Equal(
5,
(byte)CommandReplyType.Succeeded,
0,
(byte)AddressType.DomainName,
10,
103,
111,
111,
103,
108,
101,
46,
99,
111,
109,
255,
254);
}
async Task RunProxyAsync(CancellationToken cancellationToken)
{
IProxy proxy;
try
{
var command = await Command.ReadFromAsync(this._clientStream, this._bufferPool).ConfigureAwait(false);
switch (command.CommandType)
{
case CommandType.Connect:
proxy = this._proxyFactory.CreateTcpProxy(
this._clientStream,
command.EndPoint,
this._bufferPool);
break;
case CommandType.UdpAssociate:
proxy = this._proxyFactory.CreateUdpProxy(this._clientStream, this._bufferPool);
break;
default:
throw new ProtocolException(CommandReplyType.CommandNotSupported);
}
}
catch (Exception ex)
{
var commandReplyType = CommandReplyType.GeneralFailure;
switch (ex)
{
case ProtocolException socksEx:
this._log.LogError(socksEx, "Protocol error");
commandReplyType = socksEx.ErrorCode;
break;
case IOException _:
case SocketException _:
this._log.LogError("Network error: {0}", ex.Message);
break;
default:
this._log.LogError("Connection error.", ex);
break;
}
await new CommandReply(commandReplyType, s_EmptyEndPoint)
.WriteToAsync(this._clientStream, this._bufferPool)
.ConfigureAwait(false);
return;
}
var reply = new CommandReply(CommandReplyType.Succeeded, proxy.BindEndPoint);
await reply.WriteToAsync(this._clientStream, this._bufferPool).ConfigureAwait(false);
using (proxy)
{
await proxy.RunAsync(cancellationToken).ConfigureAwait(false);
}
}
public async Task Ipv4()
{
var commandReply = new CommandReply(
CommandReplyType.Succeeded,
new IPEndPoint(IPAddress.Parse("1.2.3.4"), 65534));
var stream = new MemoryWriteOnlyStream();
await commandReply.WriteToAsync(stream, this._bufferPool).ConfigureAwait(true);
stream.ToArray().Should().Equal(
5,
(byte)CommandReplyType.Succeeded,
0,
(byte)AddressType.Ipv4,
1,
2,
3,
4,
255,
254);
}