| private InternalShutdown ( SocketShutdown how ) : void | ||
| how | SocketShutdown | |
| return | void | |
// Disposes the Tcp connection.
protected virtual void Dispose(bool disposing)
{
if (Interlocked.CompareExchange(ref _disposed, 1, 0) == 0)
{
if (disposing)
{
IDisposable?dataStream = _dataStream;
if (dataStream != null)
{
dataStream.Dispose();
}
else
{
// If the NetworkStream wasn't created, the Socket might
// still be there and needs to be closed. In the case in which
// we are bound to a local IPEndPoint this will remove the
// binding and free up the IPEndPoint for later uses.
Socket chkClientSocket = Volatile.Read(ref _clientSocket);
if (chkClientSocket != null)
{
try
{
chkClientSocket.InternalShutdown(SocketShutdown.Both);
}
finally
{
chkClientSocket.Close();
}
}
}
GC.SuppressFinalize(this);
}
}
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
if (NetEventSource.IsEnabled)
{
NetEventSource.Info(this);
}
// The only resource we need to free is the network stream, since this
// is based on the client socket, closing the stream will cause us
// to flush the data to the network, close the stream and (in the
// NetoworkStream code) close the socket as well.
if (_disposed)
{
return;
}
Socket chkClientSocket = _clientSocket;
if (chkClientSocket != null)
{
// If the NetworkStream wasn't retrieved, the Socket might
// still be there and needs to be closed to release the effect
// of the Bind() call and free the bound IPEndPoint.
chkClientSocket.InternalShutdown(SocketShutdown.Both);
chkClientSocket.Dispose();
_clientSocket = null !;
}
_disposed = true;
GC.SuppressFinalize(this);
}
}
protected override void Dispose(bool disposing)
{
if (Interlocked.Exchange(ref _disposed, 1) != 0)
{
return;
}
if (disposing)
{
// The only resource we need to free is the network stream, since this
// is based on the client socket, closing the stream will cause us
// to flush the data to the network, close the stream and (in the
// NetoworkStream code) close the socket as well.
_readable = false;
_writeable = false;
if (_ownsSocket)
{
// If we own the Socket (false by default), close it
// ignoring possible exceptions (eg: the user told us
// that we own the Socket but it closed at some point of time,
// here we would get an ObjectDisposedException)
_streamSocket.InternalShutdown(SocketShutdown.Both);
_streamSocket.Close(_closeTimeout);
}
}
base.Dispose(disposing);
}
private void FreeResources()
{
//
// only resource we need to free is the network stream, since this
// is based on the client socket, closing the stream will cause us
// to flush the data to the network, close the stream and (in the
// NetoworkStream code) close the socket as well.
//
if (m_CleanedUp)
{
return;
}
Socket chkClientSocket = Client;
if (chkClientSocket != null)
{
//
// if the NetworkStream wasn't retrieved, the Socket might
// still be there and needs to be closed to release the effect
// of the Bind() call and free the bound IPEndPoint.
//
chkClientSocket.InternalShutdown(SocketShutdown.Both);
chkClientSocket.Close();
Client = null;
}
m_CleanedUp = true;
}
protected override void Dispose(bool disposing)
{
#if DEBUG
using (DebugThreadTracking.SetThreadKind(ThreadKinds.User))
{
#endif
// Mark this as disposed before changing anything else.
bool cleanedUp = _cleanedUp;
_cleanedUp = true;
if (!cleanedUp && disposing)
{
// The only resource we need to free is the network stream, since this
// is based on the client socket, closing the stream will cause us
// to flush the data to the network, close the stream and (in the
// NetoworkStream code) close the socket as well.
_readable = false;
_writeable = false;
if (_ownsSocket)
{
// If we own the Socket (false by default), close it
// ignoring possible exceptions (eg: the user told us
// that we own the Socket but it closed at some point of time,
// here we would get an ObjectDisposedException)
_streamSocket.InternalShutdown(SocketShutdown.Both);
_streamSocket.Close(_closeTimeout);
}
}
#if DEBUG
}
#endif
base.Dispose(disposing);
}
// Disposes the Tcp connection.
protected virtual void Dispose(bool disposing)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Enter(NetEventSource.ComponentType.Socket, this, nameof(Dispose), "");
}
if (_cleanedUp)
{
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Exit(NetEventSource.ComponentType.Socket, this, nameof(Dispose), "");
}
return;
}
if (disposing)
{
IDisposable dataStream = _dataStream;
if (dataStream != null)
{
dataStream.Dispose();
}
else
{
// If the NetworkStream wasn't created, the Socket might
// still be there and needs to be closed. In the case in which
// we are bound to a local IPEndPoint this will remove the
// binding and free up the IPEndPoint for later uses.
Socket chkClientSocket = _clientSocket;
if (chkClientSocket != null)
{
try
{
chkClientSocket.InternalShutdown(SocketShutdown.Both);
}
finally
{
chkClientSocket.Dispose();
_clientSocket = null;
}
}
}
DisposeCore(); // platform-specific disposal work
GC.SuppressFinalize(this);
}
_cleanedUp = true;
if (NetEventSource.Log.IsEnabled())
{
NetEventSource.Exit(NetEventSource.ComponentType.Socket, this, nameof(Dispose), "");
}
}
// Disposes the Tcp connection.
protected virtual void Dispose(bool disposing)
{
if (Logging.On)
{
Logging.Enter(Logging.Sockets, this, "Dispose", "");
}
if (_cleanedUp)
{
if (Logging.On)
{
Logging.Exit(Logging.Sockets, this, "Dispose", "");
}
return;
}
if (disposing)
{
IDisposable dataStream = _dataStream;
if (dataStream != null)
{
dataStream.Dispose();
}
else
{
// If the NetworkStream wasn't created, the Socket might
// still be there and needs to be closed. In the case in which
// we are bound to a local IPEndPoint this will remove the
// binding and free up the IPEndPoint for later uses.
Socket chkClientSocket = Client;
if (chkClientSocket != null)
{
try
{
chkClientSocket.InternalShutdown(SocketShutdown.Both);
}
finally
{
chkClientSocket.Dispose();
Client = null;
}
}
}
GC.SuppressFinalize(this);
}
_cleanedUp = true;
if (Logging.On)
{
Logging.Exit(Logging.Sockets, this, "Dispose", "");
}
}
private void FreeResources()
{
if (!this.m_CleanedUp)
{
Socket client = this.Client;
if (client != null)
{
client.InternalShutdown(SocketShutdown.Both);
client.Close();
this.Client = null;
}
this.m_CleanedUp = true;
}
}
protected virtual void Dispose(bool disposing)
{
if (Logging.On)
{
Logging.Enter(Logging.Sockets, this, "Dispose", "");
}
if (this.m_CleanedUp)
{
if (Logging.On)
{
Logging.Exit(Logging.Sockets, this, "Dispose", "");
}
}
else
{
if (disposing)
{
IDisposable dataStream = this.m_DataStream;
if (dataStream != null)
{
dataStream.Dispose();
}
else
{
Socket client = this.Client;
if (client != null)
{
try
{
client.InternalShutdown(SocketShutdown.Both);
}
finally
{
client.Close();
this.Client = null;
}
}
}
GC.SuppressFinalize(this);
}
this.m_CleanedUp = true;
if (Logging.On)
{
Logging.Exit(Logging.Sockets, this, "Dispose", "");
}
}
}
/// <include file='doc\NetworkStream.uex' path='docs/doc[@for="NetworkStream.Dispose"]/*' />
protected virtual void Dispose(bool disposing)
{
if (m_CleanedUp)
{
return;
}
if (disposing)
{
//no managed objects to cleanup
}
//
// only resource we need to free is the network stream, since this
// is based on the client socket, closing the stream will cause us
// to flush the data to the network, close the stream and (in the
// NetoworkStream code) close the socket as well.
//
if (m_StreamSocket != null)
{
m_Readable = false;
m_Writeable = false;
if (m_OwnsSocket)
{
//
// if we own the Socket (false by default), close it
// swallowing possible exceptions (eg: the user told us
// that we own the Socket but it closed at some point of time,
// here we would get an ObjectDisposedException)
//
Socket chkStreamSocket = m_StreamSocket;
if (chkStreamSocket != null)
{
chkStreamSocket.InternalShutdown(SocketShutdown.Both);
chkStreamSocket.Close();
}
}
//
// at this point dereference the Socket anyway
//
m_StreamSocket = null;
}
m_CleanedUp = true;
}
protected override void Dispose(bool disposing)
{
#if DEBUG
using (GlobalLog.SetThreadKind(ThreadKinds.User)) {
#endif
if (!m_CleanedUp && disposing)
{
//
// only resource we need to free is the network stream, since this
// is based on the client socket, closing the stream will cause us
// to flush the data to the network, close the stream and (in the
// NetoworkStream code) close the socket as well.
//
if (m_StreamSocket != null)
{
m_Readable = false;
m_Writeable = false;
if (m_OwnsSocket)
{
//
// if we own the Socket (false by default), close it
// swallowing possible exceptions (eg: the user told us
// that we own the Socket but it closed at some point of time,
// here we would get an ObjectDisposedException)
//
Socket chkStreamSocket = m_StreamSocket;
if (chkStreamSocket != null)
{
chkStreamSocket.InternalShutdown(SocketShutdown.Both);
chkStreamSocket.Close(m_CloseTimeout);
}
}
}
}
m_CleanedUp = true;
#if DEBUG
}
#endif
base.Dispose(disposing);
}
/// <devdoc>
/// <para>
/// Establishes a connection to the specified port on the
/// specified host.
/// </para>
/// </devdoc>
public void Connect(string hostname, int port)
{
//
// parameter validation
//
if (m_CleanedUp)
{
throw new ObjectDisposedException(this.GetType().FullName);
}
if (!ValidationHelper.ValidateTcpPort(port))
{
throw new ArgumentOutOfRangeException("port");
}
//
// IPv6 Changes: instead of just using the first address in the list,
// we must now look for addresses that use a compatible
// address family to the client socket.
// However, in the case of the <hostname,port> constructor
// we will have deferred creating the socket and will
// do that here instead.
// In addition, the redundant CheckForBroadcast call was
// removed here since it is called from Connect().
//
IPAddress[] addresses = Dns.GetHostAddresses(hostname);
foreach (IPAddress address in addresses)
{
if (m_ClientSocket == null)
{
//
// We came via the <hostname,port> constructor. Set the
// address family appropriately, create the socket and
// try to connect.
//
m_Family = address.AddressFamily;
createClientSocket();
try
{
//
// Attempt to connect to the host
//
Connect(new IPEndPoint(address, port));
break;
}
catch (SocketException)
{
//
// Destroy the client socket here for retry with
// the next address.
//
try{
m_ClientSocket.InternalShutdown(SocketShutdown.Both);
}
finally{
m_ClientSocket.Close();
}
}
}
else if (address.AddressFamily == m_Family)
{
//
// Only use addresses with a matching family
//
try
{
//
// Attempt to connect to the host
//
Connect(new IPEndPoint(address, port));
break;
}
catch (SocketException)
{
//
// Intentionally empty - all set to retry the next address
//
}
}
}
//
// m_Active tells us whether we managed to connect
//
if (!m_Active)
{
throw new SocketException(SocketError.NotConnected);
}
}