private void PerformGreeting()
{
ByteBuilder builder = new ByteBuilder();
using (BinaryReader reader = new BinaryReader(this.stream, Encoding.UTF8))
{
byte[] values = reader.ReadBytes(2);
builder.Append(values);
builder.Append(reader.ReadBytes(values[1]));
}
if (!ClientGreeting.Deserialize(builder.ToArray()).Methods.Contains <AuthMethod>(AuthMethod.None))
{
this.Dispose();
throw new Socks5Exception("Client requires authentication.");
}
byte[] buffer2 = new ServerGreeting(AuthMethod.None).Serialize();
this.stream.Write(buffer2, 0, buffer2.Length);
}
/// <summary>
/// Performs the initial greeting.
/// </summary>
/// <exception cref="Socks5Exception">The client sent invalid data, or
/// requires authentication.</exception>
/// <exception cref="IOException">The stream could not be read, or the
/// operation timed out.</exception>
void PerformGreeting()
{
ByteBuilder b = new ByteBuilder();
using (var r = new BinaryReader(stream, Encoding.UTF8, true)) {
byte[] bytes = r.ReadBytes(2);
b.Append(bytes);
// The number of method-bytes following is contained in the second byte.
b.Append(r.ReadBytes(bytes[1]));
}
ClientGreeting greeting = ClientGreeting.Deserialize(b.ToArray());
// We only accept an authentication method of 'none'.
if (!greeting.Methods.Contains(AuthMethod.None))
{
Dispose();
throw new Socks5Exception("Client requires authentication.");
}
// Send back our greeting response.
var response = new ServerGreeting(AuthMethod.None).Serialize();
stream.Write(response, 0, response.Length);
}