/// <summary>
/// Starts the synchronous authentication process.
/// </summary>
/// <exception cref="ProxyException">Authentication with the proxy server failed.</exception>
/// <exception cref="ProtocolViolationException">The proxy server uses an invalid protocol.</exception>
/// <exception cref="SocketException">An operating system error occurs while accessing the Socket.</exception>
/// <exception cref="ObjectDisposedException">The Socket has been closed.</exception>
private void Authenticate()
{
Server.Send(new byte [] { 5, 2, 0, 2 });
byte[] buffer = ReadBytes(2);
if (buffer[1] == 255)
{
throw new ProxyException("No authentication method accepted.");
}
AuthMethod authenticate;
switch (buffer[1])
{
case 0:
authenticate = new AuthNone(Server);
break;
case 2:
authenticate = new AuthUserPass(Server, Username, Password);
break;
default:
throw new ProtocolViolationException();
}
authenticate.Authenticate();
}
/// <summary>
/// Starts the synchronous authentication process.
/// </summary>
/// <exception cref="ProxyException">Authentication with the proxy server failed.</exception>
/// <exception cref="ProtocolViolationException">The proxy server uses an invalid protocol.</exception>
/// <exception cref="SocketException">An operating system error occurs while accessing the Socket.</exception>
/// <exception cref="ObjectDisposedException">The Socket has been closed.</exception>
private void Authenticate(byte[] buffer)
{
buffer[0] = 5;
buffer[1] = 2;
buffer[2] = 0;
buffer[3] = 2;
if (Server.Send(buffer, 0, 4, SocketFlags.None) < 4)
{
throw new SocketException(10054);
}
ReadBytes(buffer, 2);
if (buffer[1] == 255)
{
throw new ProxyException("No authentication method accepted.");
}
AuthMethod authenticate;
switch (buffer[1])
{
case 0:
authenticate = new AuthNone(Server);
break;
case 2:
authenticate = new AuthUserPass(Server, Username, Password);
break;
default:
throw new ProtocolViolationException();
}
authenticate.Authenticate();
}
