public ConnectAsyncResult(Uri uri, TimeSpan timeout, AsyncCallback callback, object state) : base(callback, state)
{
this.uri = uri;
this.addresses = SocketConnectionInitiator.GetIPAddresses(uri);
this.port = uri.Port;
if (this.port == -1)
{
this.port = 0x328;
}
this.currentIndex = 0;
this.timeout = timeout;
this.timeoutHelper = new TimeoutHelper(timeout);
if (Thread.CurrentThread.IsThreadPoolThread)
{
if (this.StartConnect())
{
base.Complete(true);
}
}
else
{
if (startConnectCallback == null)
{
startConnectCallback = new Action <object>(SocketConnectionInitiator.ConnectAsyncResult.StartConnectCallback);
}
ActionItem.Schedule(startConnectCallback, this);
}
}
public async Task <IConnection> ConnectAsync(Uri uri, TimeSpan timeout)
{
int port = uri.Port;
IPAddress[] addresses = await SocketConnectionInitiator.GetIPAddressesAsync(uri);
IConnection socketConnection = null;
SocketException lastException = null;
if (port == -1)
{
port = TcpUri.DefaultPort;
}
int invalidAddressCount = 0;
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
for (int i = 0; i < addresses.Length; i++)
{
if (timeoutHelper.RemainingTime() == TimeSpan.Zero)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
CreateTimeoutException(uri, timeoutHelper.OriginalTimeout, addresses, invalidAddressCount, lastException));
}
DateTime connectStartTime = DateTime.UtcNow;
try
{
socketConnection = await CreateConnectionAsync(addresses[i], port);
lastException = null;
break;
}
catch (SocketException socketException)
{
invalidAddressCount++;
lastException = socketException;
}
}
if (socketConnection == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
new EndpointNotFoundException(SR.Format(SR.NoIPEndpointsFoundForHost, uri.Host)));
}
if (lastException != null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(
SocketConnectionInitiator.ConvertConnectException(lastException, uri,
timeoutHelper.ElapsedTime(), lastException));
}
return(socketConnection);
}
internal override IConnectionInitiator GetConnectionInitiator()
{
IConnectionInitiator socketConnectionInitiator = new SocketConnectionInitiator(
ConnectionBufferSize);
#if CONNECTIONDUMP
socketConnectionInitiator = new ConnectionDumpInitiator(socketConnectionInitiator);
#endif
return(new BufferedConnectionInitiator(socketConnectionInitiator,
MaxOutputDelay, ConnectionBufferSize));
}
private bool StartConnect()
{
while (this.currentIndex < this.addresses.Length)
{
if (this.timeoutHelper.RemainingTime() == TimeSpan.Zero)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(SocketConnectionInitiator.CreateTimeoutException(this.uri, this.timeoutHelper.OriginalTimeout, this.addresses, this.invalidAddressCount, this.lastException));
}
AddressFamily addressFamily = this.addresses[this.currentIndex].AddressFamily;
if ((addressFamily == AddressFamily.InterNetworkV6) && !Socket.OSSupportsIPv6)
{
this.addresses[this.currentIndex++] = null;
}
else
{
this.connectStartTime = DateTime.UtcNow;
try
{
IPEndPoint remoteEP = new IPEndPoint(this.addresses[this.currentIndex], this.port);
this.socket = new Socket(addressFamily, SocketType.Stream, ProtocolType.Tcp);
IAsyncResult asyncResult = this.socket.BeginConnect(remoteEP, onConnect, this);
if (!asyncResult.CompletedSynchronously)
{
return(false);
}
this.socket.EndConnect(asyncResult);
return(true);
}
catch (SocketException exception)
{
this.invalidAddressCount++;
this.TraceConnectFailure(exception);
this.lastException = exception;
this.currentIndex++;
continue;
}
}
}
if (this.socket == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new EndpointNotFoundException(System.ServiceModel.SR.GetString("NoIPEndpointsFoundForHost", new object[] { this.uri.Host })));
}
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(SocketConnectionInitiator.ConvertConnectException(this.lastException, this.uri, this.timeoutHelper.ElapsedTime(), this.lastException));
}
public static Exception CreateRequestWebException(WebException webException, HttpWebRequest request, HttpAbortReason abortReason)
{
Exception exception = ConvertWebException(webException, request, abortReason);
if (webException.Response != null)
{
webException.Response.Close();
}
if (exception != null)
{
return(exception);
}
if (webException.InnerException is IOException)
{
return(CreateRequestIOException((IOException)webException.InnerException, request, webException));
}
if (webException.InnerException is SocketException)
{
return(SocketConnectionInitiator.ConvertConnectException((SocketException)webException.InnerException, request.RequestUri, TimeSpan.MaxValue, webException));
}
return(new EndpointNotFoundException(System.ServiceModel.SR.GetString("EndpointNotFound", new object[] { request.RequestUri.AbsoluteUri }), webException));
}
private void TraceConnectFailure(SocketException exception)
{
SocketConnectionInitiator.TraceConnectFailure(this.socket, exception, this.uri, (TimeSpan)(DateTime.UtcNow - this.connectStartTime));
this.socket.Close();
}
