private IAsyncResult BeginSendFileInternal(string fileName, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags, AsyncCallback callback, object state)
{
FileStream fileStream = OpenFile(fileName);
TransmitFileAsyncResult asyncResult = new TransmitFileAsyncResult(this, state, callback);
asyncResult.StartPostingAsyncOp(false);
SocketError errorCode = SocketPal.SendFileAsync(_handle, fileStream, preBuffer, postBuffer, flags, asyncResult);
// Check for synchronous exception
if (errorCode != SocketError.Success)
{
SocketException socketException = new SocketException((int)errorCode);
UpdateStatusAfterSocketError(socketException);
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, socketException);
}
throw socketException;
}
asyncResult.FinishPostingAsyncOp(ref Caches.SendClosureCache);
return(asyncResult);
}
private IAsyncResult BeginSendFileInternal(string fileName, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags, AsyncCallback callback, object state)
{
FileStream fileStream = OpenFile(fileName);
TransmitFileAsyncResult asyncResult = new TransmitFileAsyncResult(this, state, callback);
asyncResult.StartPostingAsyncOp(false);
SocketError errorCode = SocketPal.SendFileAsync(_handle, fileStream, preBuffer, postBuffer, flags, asyncResult);
// Check for synchronous exception
if (!CheckErrorAndUpdateStatus(errorCode))
{
throw new SocketException((int)errorCode);
}
asyncResult.FinishPostingAsyncOp(ref Caches.SendClosureCache);
return(asyncResult);
}
private void EndSendFileInternal(IAsyncResult asyncResult)
{
TransmitFileAsyncResult castedAsyncResult = asyncResult as TransmitFileAsyncResult;
if (castedAsyncResult == null || castedAsyncResult.AsyncObject != this)
{
throw new ArgumentException(SR.net_io_invalidasyncresult, nameof(asyncResult));
}
if (castedAsyncResult.EndCalled)
{
throw new InvalidOperationException(SR.Format(SR.net_io_invalidendcall, "EndSendFile"));
}
castedAsyncResult.InternalWaitForCompletion();
castedAsyncResult.EndCalled = true;
// If the user passed the Disconnect and/or ReuseSocket flags, then TransmitFile disconnected the socket.
// Update our state to reflect this.
if (castedAsyncResult.DoDisconnect)
{
SetToDisconnected();
_remoteEndPoint = null;
}
if ((SocketError)castedAsyncResult.ErrorCode != SocketError.Success)
{
SocketException socketException = new SocketException(castedAsyncResult.ErrorCode);
UpdateStatusAfterSocketError(socketException);
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, socketException);
}
throw socketException;
}
}
public static unsafe SocketError SendFileAsync(SafeCloseSocket handle, FileStream fileStream, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags, TransmitFileAsyncResult asyncResult)
{
asyncResult.SetUnmanagedStructures(fileStream, preBuffer, postBuffer, (flags & (TransmitFileOptions.Disconnect | TransmitFileOptions.ReuseSocket)) != 0);
try
{
bool success = TransmitFileHelper(
handle,
fileStream?.SafeFileHandle,
asyncResult.OverlappedHandle,
preBuffer,
postBuffer,
flags);
return(asyncResult.ProcessOverlappedResult(success, 0));
}
catch
{
asyncResult.ReleaseUnmanagedStructures();
throw;
}
}
public static unsafe SocketError SendFileAsync(SafeCloseSocket handle, FileStream fileStream, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags, TransmitFileAsyncResult asyncResult)
{
asyncResult.SetUnmanagedStructures(fileStream, preBuffer, postBuffer, (flags & (TransmitFileOptions.Disconnect | TransmitFileOptions.ReuseSocket)) != 0);
SocketError errorCode = TransmitFileHelper(handle, fileStream?.SafeFileHandle, asyncResult.OverlappedHandle, preBuffer, postBuffer, flags);
// This will release resources if necessary
errorCode = asyncResult.CheckAsyncCallOverlappedResult(errorCode);
return errorCode;
}
public static unsafe SocketError SendFileAsync(SafeCloseSocket handle, FileStream fileStream, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags, TransmitFileAsyncResult asyncResult)
{
asyncResult.SetUnmanagedStructures(fileStream, preBuffer, postBuffer, (flags & (TransmitFileOptions.Disconnect | TransmitFileOptions.ReuseSocket)) != 0);
SocketError errorCode = TransmitFileHelper(handle, fileStream?.SafeFileHandle, asyncResult.OverlappedHandle, preBuffer, postBuffer, flags);
// This will release resources if necessary
errorCode = asyncResult.CheckAsyncCallOverlappedResult(errorCode);
return(errorCode);
}
private IAsyncResult BeginSendFileInternal(string fileName, byte[] preBuffer, byte[] postBuffer, TransmitFileOptions flags, AsyncCallback callback, object state)
{
FileStream fileStream = OpenFile(fileName);
TransmitFileAsyncResult asyncResult = new TransmitFileAsyncResult(this, state, callback);
asyncResult.StartPostingAsyncOp(false);
SocketError errorCode = SocketPal.SendFileAsync(_handle, fileStream, preBuffer, postBuffer, flags, asyncResult);
// Check for synchronous exception
if (errorCode != SocketError.Success)
{
SocketException socketException = new SocketException((int)errorCode);
UpdateStatusAfterSocketError(socketException);
if (NetEventSource.IsEnabled) NetEventSource.Error(this, socketException);
throw socketException;
}
asyncResult.FinishPostingAsyncOp(ref Caches.SendClosureCache);
return asyncResult;
}
