internal void ReceiveKerberos(Object threadContext)
{
try
{
_AuthStream.BeginRead(_buff, 0, _buff.Length, myReceiveKerberosCallback, _AuthStream);
}
catch
{
StreamIsConnected = false;
Stop();
if (_rbr2 != null)
{
_rbr2.Close();
}
if (_rbr2 != null)
{
_rbr2 = null;
}
if (_rms2 != null)
{
_rms2.Dispose();
}
if (_buff != null)
{
_buff = null;
}
}
}
public static void AuthenticateClient(TcpClient client)
{
var networkStream = client.GetStream();
// Create the NegotiateStream.
var negotiateStream = new NegotiateStream(networkStream, false);
// Combine client and NegotiateStream instance into ClientState.
var clientState = new ClientState(negotiateStream, client);
// Listen for the client authentication request.
negotiateStream.BeginAuthenticateAsServer(
EndAuthenticateCallback,
clientState
);
// Wait until the authentication completes.
clientState.Waiter.WaitOne();
clientState.Waiter.Reset();
// Receive encoded message sent by client.
negotiateStream.BeginRead(
clientState.Buffer,
0,
clientState.Buffer.Length,
EndReadCallback,
clientState);
clientState.Waiter.WaitOne();
// Close stream and client.
negotiateStream.Close();
client.Close();
}
//<snippet1>
public static void AuthenticateClient(TcpClient clientRequest)
{
NetworkStream stream = clientRequest.GetStream();
// Create the NegotiateStream.
NegotiateStream authStream = new NegotiateStream(stream, false);
// Save the current client and NegotiateStream instance
// in a ClientState object.
ClientState cState = new ClientState(authStream, clientRequest);
// Listen for the client authentication request.
authStream.BeginAuthenticateAsServer(
new AsyncCallback(EndAuthenticateCallback),
cState
);
// Wait until the authentication completes.
cState.Waiter.WaitOne();
cState.Waiter.Reset();
authStream.BeginRead(cState.Buffer, 0, cState.Buffer.Length,
new AsyncCallback(EndReadCallback),
cState);
cState.Waiter.WaitOne();
// Finished with the current client.
authStream.Close();
clientRequest.Close();
}
/// <summary>
/// Extends BeginRead so that when a state object is not needed, null does not need to be passed.
/// <example>
/// negotiatestream.BeginRead(buffer, offset, count, asyncCallback);
/// </example>
/// </summary>
public static IAsyncResult BeginRead(this NegotiateStream negotiatestream, Byte[] buffer, Int32 offset, Int32 count, AsyncCallback asyncCallback)
{
if (negotiatestream == null)
{
throw new ArgumentNullException("negotiatestream");
}
return(negotiatestream.BeginRead(buffer, offset, count, asyncCallback, null));
}
/// <summary>
/// Extends BeginRead so that buffer offset of 0 and call to Array.Length are not needed.
/// <example>
/// negotiatestream.BeginRead(buffer, asyncCallback);
/// </example>
/// </summary>
public static IAsyncResult BeginRead(this NegotiateStream negotiatestream, Byte[] buffer, AsyncCallback asyncCallback)
{
if (negotiatestream == null)
{
throw new ArgumentNullException("negotiatestream");
}
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
return(negotiatestream.BeginRead(buffer, 0, buffer.Length, asyncCallback));
}
public async Task NegotiateStream_ConcurrentAsyncReadOrWrite_ThrowsNotSupportedException()
{
byte[] recvBuf = new byte[s_sampleMsg.Length];
var network = new VirtualNetwork();
using (var clientStream = new VirtualNetworkStream(network, isServer: false))
using (var serverStream = new VirtualNetworkStream(network, isServer: true))
using (var client = new NegotiateStream(clientStream))
using (var server = new NegotiateStream(serverStream))
{
await TestConfiguration.WhenAllOrAnyFailedWithTimeout(
client.AuthenticateAsClientAsync(CredentialCache.DefaultNetworkCredentials, string.Empty),
server.AuthenticateAsServerAsync());
// Custom EndWrite/Read will not reset the variable which monitors concurrent write/read.
await TestConfiguration.WhenAllOrAnyFailedWithTimeout(
Task.Factory.FromAsync(client.BeginWrite, (ar) => { Assert.NotNull(ar); }, s_sampleMsg, 0, s_sampleMsg.Length, client),
Task.Factory.FromAsync(server.BeginRead, (ar) => { Assert.NotNull(ar); }, recvBuf, 0, s_sampleMsg.Length, server));
Assert.Throws <NotSupportedException>(() => client.BeginWrite(s_sampleMsg, 0, s_sampleMsg.Length, (ar) => { Assert.Null(ar); }, null));
Assert.Throws <NotSupportedException>(() => server.BeginRead(recvBuf, 0, s_sampleMsg.Length, (ar) => { Assert.Null(ar); }, null));
}
}
//</snippet2>
//<snippet3>
public static void EndReadCallback(IAsyncResult ar)
{
// Get the saved data.
ClientState cState = (ClientState)ar.AsyncState;
TcpClient clientRequest = cState.Client;
NegotiateStream authStream = (NegotiateStream)cState.AuthenticatedStream;
// Get the buffer that stores the message sent by the client.
int bytes = -1;
// Read the client message.
try
{
bytes = authStream.EndRead(ar);
cState.Message.Append(Encoding.UTF8.GetChars(cState.Buffer, 0, bytes));
if (bytes != 0)
{
authStream.BeginRead(cState.Buffer, 0, cState.Buffer.Length,
new AsyncCallback(EndReadCallback),
cState);
return;
}
}
catch (Exception e)
{
// A real application should do something
// useful here, such as logging the failure.
Console.WriteLine("Client message exception:");
Console.WriteLine(e);
cState.Waiter.Set();
return;
}
IIdentity id = authStream.RemoteIdentity;
Console.WriteLine("{0} says {1}", id.Name, cState.Message.ToString());
cState.Waiter.Set();
}