// block api
public void Connect()
{
if (Connected)
return;
Log.Info("BeginReceive sysSocket.Connect(hostIp, hostPort);");
try
{
sysSocket.Connect(hostIp, hostPort);
}
catch (Exception e)
{
Log.Error("ClientNetwork BeginReceive throw exp:{0}", e);
defferedConnected = new ConnectAsyncResult()
{
Ex = e,
};
return;
}
defferedConnected = new ConnectAsyncResult()
{
Conn = new Connector(sysSocket, 0),
};
}
public override IAsyncResult BeginConnect(System.Net.EndPoint endPoint, AsyncCallback callback, Object state)
{
ConnectAsyncResult lWrapper = new ConnectAsyncResult(callback, state);
this.fInnerConnection.BeginConnect(endPoint, lWrapper.ConnectionConnect, this);
return lWrapper;
}
internal IAsyncResult UnsafeBeginConnect(EndPoint remoteEP, AsyncCallback callback, object state)
{
if (CanUseConnectEx(remoteEP))
{
return BeginConnectEx(remoteEP, false, callback, state);
}
EndPoint endPointSnapshot = remoteEP;
SocketAddress socketAddress = SnapshotAndSerialize(ref endPointSnapshot);
// No context flow here. Can use Lazy.
ConnectAsyncResult asyncResult = new ConnectAsyncResult(this, endPointSnapshot, state, callback);
DoBeginConnect(endPointSnapshot, socketAddress, asyncResult);
return asyncResult;
}
public void Poll()
{
try
{
if (defferedConnected != null)
{
connector = defferedConnected.Conn;
connector.BeginReceive();
// notify
if (ConnectorConnected != null)
{
ConnectorConnected(defferedConnected.Conn, defferedConnected.Ex);
}
defferedConnected = null;
}
RefreshMessageQueue();
RefreshClient();
}
catch (Exception e)
{
Log.Error(e);
}
}
//
// Async Winsock Support, the following functions use either
// the Async Winsock support to do overlapped I/O WSASend/WSARecv
// or a WSAEventSelect call to enable selection and non-blocking mode
// of otherwise normal Winsock calls.
//
// Currently the following Async Socket calls are supported:
// Send, Recv, SendTo, RecvFrom, Connect, Accept
//
/*++
Routine Description:
BeginConnect - Does a async winsock connect, by calling
WSAEventSelect to enable Connect Events to signal an event and
wake up a callback which involkes a callback.
So note: This routine may go pending at which time,
but any case the callback Delegate will be called upon completion
Arguments:
remoteEP - status line that we wish to parse
Callback - Async Callback Delegate that is called upon Async Completion
State - State used to track callback, set by caller, not required
Return Value:
IAsyncResult - Async result used to retreive result
--*/
/// <include file='doc\Socket.uex' path='docs/doc[@for="Socket.BeginConnect"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public IAsyncResult BeginConnect(EndPoint remoteEP, AsyncCallback callback, Object state) {
if (CleanedUp) {
throw new ObjectDisposedException(this.GetType().FullName);
}
//
// parameter validation
//
if (remoteEP==null) {
throw new ArgumentNullException("remoteEP");
}
GlobalLog.Print("Socket#" + ValidationHelper.HashString(this) + "::BeginConnect() remoteEP:" + remoteEP.ToString());
//
// ask the EndPoint to generate a SocketAddress that we
// can pass down to winsock
//
EndPoint endPointSnapshot = remoteEP;
if (remoteEP.GetType()==typeof(IPEndPoint)) {
endPointSnapshot = new IPEndPoint(((IPEndPoint)remoteEP).Address, ((IPEndPoint)remoteEP).Port);
}
SocketAddress socketAddress = endPointSnapshot.Serialize();
// This will check the permissions for connect.
CheckCacheRemote(socketAddress, endPointSnapshot, true);
// get async going
SetAsyncEventSelect(AsyncEventBits.FdConnect);
ConnectAsyncResult asyncResult = new ConnectAsyncResult(this, state, callback);
int errorCode =
UnsafeNclNativeMethods.OSSOCK.connect(
m_Handle,
socketAddress.m_Buffer,
socketAddress.m_Size );
if (errorCode!=SocketErrors.Success) {
errorCode = Marshal.GetLastWin32Error();
}
GlobalLog.Print("Socket#" + ValidationHelper.HashString(this) + "::BeginConnect() UnsafeNclNativeMethods.OSSOCK.connect returns:" + errorCode.ToString());
if (errorCode==SocketErrors.Success) {
SetToConnected();
}
asyncResult.CheckAsyncCallResult(errorCode);
//
// if the asynchronous native call fails synchronously
// we'll throw a SocketException
//
if (asyncResult.ErrorCode!=SocketErrors.Success) {
//
// update our internal state after this socket error and throw
//
UpdateStatusAfterSocketError();
throw new SocketException(asyncResult.ErrorCode);
}
if (m_RightEndPoint==null) {
//
// save a copy of the EndPoint so we can use it for Create()
//
m_RightEndPoint = endPointSnapshot;
}
GlobalLog.Print( "BeginConnect() to:" + endPointSnapshot.ToString() + " returning AsyncResult:" + ValidationHelper.HashString(asyncResult));
return asyncResult;
}
public IAsyncResult BeginConnect(EndPoint remoteEP, AsyncCallback callback, object state)
{
//
// parameter validation
//
if(s_LoggingEnabled)Logging.Enter(Logging.Sockets, this, "BeginConnect", remoteEP);
if (CleanedUp) {
throw new ObjectDisposedException(this.GetType().FullName);
}
if (remoteEP==null) {
throw new ArgumentNullException("remoteEP");
}
if (isListening)
{
throw new InvalidOperationException(SR.GetString(SR.net_sockets_mustnotlisten));
}
DnsEndPoint dnsEP = remoteEP as DnsEndPoint;
if (dnsEP != null)
{
if (dnsEP.AddressFamily != AddressFamily.Unspecified && !CanTryAddressFamily(dnsEP.AddressFamily))
{
throw new NotSupportedException(SR.GetString(SR.net_invalidversion));
}
return BeginConnect(dnsEP.Host, dnsEP.Port, callback, state);
}
if (CanUseConnectEx(remoteEP))
{
return BeginConnectEx(remoteEP, true, callback, state);
}
// This will check the permissions for connect.
EndPoint endPointSnapshot = remoteEP;
SocketAddress socketAddress = CheckCacheRemote(ref endPointSnapshot, true);
// Flow the context. No need to lock it since we don't use it until the callback.
ConnectAsyncResult asyncResult = new ConnectAsyncResult(this, endPointSnapshot, state, callback);
asyncResult.StartPostingAsyncOp(false);
// Post the connect.
DoBeginConnect(endPointSnapshot, socketAddress, asyncResult);
// We didn't throw, so finish the posting op. This will call the callback if the operation already completed.
asyncResult.FinishPostingAsyncOp(ref Caches.ConnectClosureCache);
if(s_LoggingEnabled)Logging.Exit(Logging.Sockets, this, "BeginConnect", asyncResult);
return asyncResult;
}
public IAsyncResult BeginConnect(EndPoint remoteEP, AsyncCallback callback, object state)
{
if (Socket.s_LoggingEnabled)
Logging.Enter(Logging.Sockets, (object) this, "BeginConnect", (object) remoteEP);
if (this.CleanedUp)
throw new ObjectDisposedException(this.GetType().FullName);
if (remoteEP == null)
throw new ArgumentNullException("remoteEP");
if (this.isListening)
throw new InvalidOperationException(SR.GetString("net_sockets_mustnotlisten"));
DnsEndPoint dnsEndPoint = remoteEP as DnsEndPoint;
if (dnsEndPoint != null)
{
if (dnsEndPoint.AddressFamily != AddressFamily.Unspecified && !this.CanTryAddressFamily(dnsEndPoint.AddressFamily))
throw new NotSupportedException(SR.GetString("net_invalidversion"));
else
return this.BeginConnect(dnsEndPoint.Host, dnsEndPoint.Port, callback, state);
}
else
{
if (this.CanUseConnectEx(remoteEP))
return this.BeginConnectEx(remoteEP, true, callback, state);
EndPoint remoteEP1 = remoteEP;
SocketAddress socketAddress = this.CheckCacheRemote(ref remoteEP1, true);
ConnectAsyncResult connectAsyncResult = new ConnectAsyncResult((object) this, remoteEP1, state, callback);
connectAsyncResult.StartPostingAsyncOp(false);
this.DoBeginConnect(remoteEP1, socketAddress, (LazyAsyncResult) connectAsyncResult);
connectAsyncResult.FinishPostingAsyncOp(ref this.Caches.ConnectClosureCache);
if (Socket.s_LoggingEnabled)
Logging.Exit(Logging.Sockets, (object) this, "BeginConnect", (object) connectAsyncResult);
return (IAsyncResult) connectAsyncResult;
}
}
internal IAsyncResult UnsafeBeginConnect(EndPoint remoteEP, AsyncCallback callback, object state)
{
if (this.CanUseConnectEx(remoteEP))
return this.BeginConnectEx(remoteEP, false, callback, state);
EndPoint remoteEP1 = remoteEP;
SocketAddress socketAddress = this.SnapshotAndSerialize(ref remoteEP1);
ConnectAsyncResult connectAsyncResult = new ConnectAsyncResult((object) this, remoteEP1, state, callback);
this.DoBeginConnect(remoteEP1, socketAddress, (LazyAsyncResult) connectAsyncResult);
return (IAsyncResult) connectAsyncResult;
}
internal IAsyncResult UnsafeBeginConnect(IPEndPoint remoteEP, AsyncCallback callback, object state)
{
if (CanUseConnectEx(remoteEP))
{
return BeginConnectEx(remoteEP, false, callback, state);
}
EndPoint endPointSnapshot = remoteEP;
var asyncResult = new ConnectAsyncResult(this, endPointSnapshot, state, callback);
// For connectionless protocols, Connect is not an I/O call.
Connect(remoteEP);
asyncResult.FinishPostingAsyncOp();
// Synchronously complete the I/O and call the user's callback.
asyncResult.InvokeCallback();
return asyncResult;
}
//
// This is the static internal callback that will be called when
// the IO we issued for the user to winsock has completed, either
// synchronously (Signaled=false) or asynchronously (Signaled=true)
// when this function gets called it must:
// 1) update the AsyncResult object with the results of the completed IO
// 2) signal events that the user might be waiting on
// 3) cal the callback function that the user might have specified
//
internal static void ConnectCallback(object stateObject, bool Signaled)
{
ConnectAsyncResult asyncResult = stateObject as ConnectAsyncResult;
Socket socket = asyncResult.AsyncObject as Socket;
GlobalLog.Enter("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback", "Signaled:" + Signaled.ToString());
GlobalLog.Assert(!asyncResult.IsCompleted, "Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() asyncResult.IsCompleted", "");
//
// we now need to get the status of the async completion, we had an easy implementation
// that uses GetSocketOption(), but VadimE suggested not to use this 'cause it may be
// buggy on some platforms, so we use WSAEnumNetworkEvents() instead:
//
// The best way to do this is to call WSAEnumNetworkEvents and use the error code iError
// array corresponding to FD_CONNECT. getsockopt (SO_ERROR) may return NO_ERROR under
// stress even in case of error at least on Winnt4.0 (I don't remember whether I fixed
// it on Win2000 or WinXP).
//
//
// get async completion
//
/*
* int errorCode = (int)socket.GetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Error);
* GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() GetSocketOption() returns errorCode:" + errorCode.ToString());
*/
NetworkEvents networkEvents = new NetworkEvents();
networkEvents.Events = AsyncEventBits.FdConnect;
AutoResetEvent chkAsyncEvent = socket.m_AsyncEvent;
int errorCode = SocketErrors.WSAENOTSOCK;
if (chkAsyncEvent != null)
{
errorCode =
UnsafeNclNativeMethods.OSSOCK.WSAEnumNetworkEvents(
socket.m_Handle,
chkAsyncEvent.Handle,
ref networkEvents);
if (errorCode != SocketErrors.Success)
{
errorCode = Marshal.GetLastWin32Error();
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() WSAEnumNetworkEvents() failed with errorCode:" + errorCode.ToString());
}
else
{
errorCode = networkEvents.ErrorCodes[(int)AsyncEventBitsPos.FdConnectBit];
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() ErrorCodes(FdConnect) got errorCode:" + errorCode.ToString());
}
}
try {
//
// cancel async event
//
socket.SetAsyncEventSelect(AsyncEventBits.FdNone);
//
// go back to blocking mode
//
socket.InternalSetBlocking(true);
}
catch (Exception exception) {
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() caught exception::" + exception.Message);
asyncResult.Result = exception;
}
//
// if the native non-blocking call failed we'll throw a SocketException in EndConnect()
//
if (errorCode != SocketErrors.Success)
{
//
// just save the error code, the SocketException will be thrown in EndConnect()
//
asyncResult.ErrorCode = errorCode;
}
else
{
//
// the Socket is connected, update our state and performance counter
//
socket.SetToConnected();
}
//
// call the user's callback now, if there is one.
//
asyncResult.InvokeCallback(false);
GlobalLog.Leave("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback", errorCode.ToString());
}
//
// This is the static internal callback that will be called when
// the IO we issued for the user to winsock has completed, either
// synchronously (Signaled=false) or asynchronously (Signaled=true)
// when this function gets called it must:
// 1) update the AsyncResult object with the results of the completed IO
// 2) signal events that the user might be waiting on
// 3) cal the callback function that the user might have specified
//
internal static void ConnectCallback(object stateObject, bool Signaled)
{
ConnectAsyncResult asyncResult = stateObject as ConnectAsyncResult;
Socket socket = asyncResult.AsyncObject as Socket;
GlobalLog.Enter("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback", "Signaled:" + Signaled.ToString());
GlobalLog.Assert(!asyncResult.IsCompleted, "Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() asyncResult.IsCompleted", "");
//
//
// get async completion
//
/*
* int errorCode = (int)socket.GetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Error);
* GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() GetSocketOption() returns errorCode:" + errorCode.ToString());
*/
NetworkEvents networkEvents = new NetworkEvents();
networkEvents.Events = AsyncEventBits.FdConnect;
AutoResetEvent chkAsyncEvent = socket.m_AsyncEvent;
int errorCode = SocketErrors.WSAENOTSOCK;
if (chkAsyncEvent != null)
{
errorCode =
UnsafeNclNativeMethods.OSSOCK.WSAEnumNetworkEvents(
socket.m_Handle,
chkAsyncEvent.Handle,
ref networkEvents);
if (errorCode != SocketErrors.Success)
{
errorCode = Marshal.GetLastWin32Error();
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() WSAEnumNetworkEvents() failed with errorCode:" + errorCode.ToString());
}
else
{
errorCode = networkEvents.ErrorCodes[(int)AsyncEventBitsPos.FdConnectBit];
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() ErrorCodes(FdConnect) got errorCode:" + errorCode.ToString());
}
}
try {
//
// cancel async event
//
socket.SetAsyncEventSelect(AsyncEventBits.FdNone);
//
// go back to blocking mode
//
socket.InternalSetBlocking(true);
}
catch (Exception exception) {
GlobalLog.Print("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback() caught exception::" + exception.Message);
asyncResult.Result = exception;
}
//
// if the native non-blocking call failed we'll throw a SocketException in EndConnect()
//
if (errorCode != SocketErrors.Success)
{
//
// just save the error code, the SocketException will be thrown in EndConnect()
//
asyncResult.ErrorCode = errorCode;
}
else
{
//
// the Socket is connected, update our state and performance counter
//
socket.SetToConnected();
}
//
// call the user's callback now, if there is one.
//
asyncResult.InvokeCallback(false);
GlobalLog.Leave("Socket#" + ValidationHelper.HashString(socket) + "::ConnectCallback", errorCode.ToString());
}
internal IAsyncResult UnsafeBeginConnect(EndPoint remoteEP, AsyncCallback callback, object state)
{
if (this.CanUseConnectEx(remoteEP))
{
return this.BeginConnectEx(remoteEP, false, callback, state);
}
EndPoint point = remoteEP;
SocketAddress socketAddress = this.SnapshotAndSerialize(ref point);
ConnectAsyncResult asyncResult = new ConnectAsyncResult(this, point, state, callback);
this.DoBeginConnect(point, socketAddress, asyncResult);
return asyncResult;
}
public IAsyncResult BeginConnect(EndPoint remoteEP, AsyncCallback callback, object state)
{
if (s_LoggingEnabled)
{
Logging.Enter(Logging.Sockets, this, "BeginConnect", remoteEP);
}
if (this.CleanedUp)
{
throw new ObjectDisposedException(base.GetType().FullName);
}
if (remoteEP == null)
{
throw new ArgumentNullException("remoteEP");
}
if (this.isListening)
{
throw new InvalidOperationException(SR.GetString("net_sockets_mustnotlisten"));
}
DnsEndPoint point = remoteEP as DnsEndPoint;
if (point != null)
{
if ((point.AddressFamily != System.Net.Sockets.AddressFamily.Unspecified) && (point.AddressFamily != this.addressFamily))
{
throw new NotSupportedException(SR.GetString("net_invalidversion"));
}
return this.BeginConnect(point.Host, point.Port, callback, state);
}
if (this.CanUseConnectEx(remoteEP))
{
return this.BeginConnectEx(remoteEP, true, callback, state);
}
EndPoint point2 = remoteEP;
SocketAddress socketAddress = this.CheckCacheRemote(ref point2, true);
ConnectAsyncResult asyncResult = new ConnectAsyncResult(this, point2, state, callback);
asyncResult.StartPostingAsyncOp(false);
this.DoBeginConnect(point2, socketAddress, asyncResult);
asyncResult.FinishPostingAsyncOp(ref this.Caches.ConnectClosureCache);
if (s_LoggingEnabled)
{
Logging.Exit(Logging.Sockets, this, "BeginConnect", asyncResult);
}
return asyncResult;
}
