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 async Task SendFileInternalAsync(FileStream?fileStream, byte[]?preBuffer, byte[]?postBuffer)
{
SocketError errorCode = SocketError.Success;
using (fileStream)
{
// Send the preBuffer, if any
// This will throw on error
if (preBuffer != null && preBuffer.Length > 0)
{
// Using "this." makes the extension method kick in
await this.SendAsync(new ArraySegment <byte>(preBuffer), SocketFlags.None).ConfigureAwait(false);
}
// Send the file, if any
if (fileStream != null)
{
var tcs = new TaskCompletionSource <SocketError>();
errorCode = SocketPal.SendFileAsync(_handle, fileStream, (_, socketError) => tcs.SetResult(socketError));
if (errorCode == SocketError.IOPending)
{
errorCode = await tcs.Task.ConfigureAwait(false);
}
}
}
if (errorCode != SocketError.Success)
{
UpdateSendSocketErrorForDisposed(ref errorCode);
UpdateStatusAfterSocketErrorAndThrowException(errorCode);
}
// Send the postBuffer, if any
// This will throw on error
if (postBuffer != null && postBuffer.Length > 0)
{
// Using "this." makes the extension method kick in
await this.SendAsync(new ArraySegment <byte>(postBuffer), SocketFlags.None).ConfigureAwait(false);
}
}
private async Task SendFileInternalAsync(FileStream fileStream, byte[] preBuffer, byte[] postBuffer)
{
SocketError errorCode = SocketError.Success;
using (fileStream)
{
// Send the preBuffer, if any
// This will throw on error
if (preBuffer != null && preBuffer.Length > 0)
{
// Using "this." makes the extension method kick in
await this.SendAsync(new ArraySegment <byte>(preBuffer), SocketFlags.None).ConfigureAwait(false);
}
// Send the file, if any
if (fileStream != null)
{
var tcs = new TaskCompletionSource <bool>();
// This can throw ObjectDisposedException.
errorCode = SocketPal.SendFileAsync(_handle, fileStream, (bytesTransferred, socketError) =>
{
if (socketError != SocketError.Success)
{
// Synchronous exception from SendFileAsync
SocketException socketException = new SocketException((int)errorCode);
UpdateStatusAfterSocketError(socketException);
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, socketException);
}
tcs.SetException(socketException);
}
tcs.SetResult(true);
});
await tcs.Task.ConfigureAwait(false);
}
}
if (errorCode != SocketError.Success)
{
// Synchronous exception from SendFileAsync
SocketException socketException = new SocketException((int)errorCode);
UpdateStatusAfterSocketError(socketException);
if (NetEventSource.IsEnabled)
{
NetEventSource.Error(this, socketException);
}
throw socketException;
}
// Send the postBuffer, if any
// This will throw on error
if (postBuffer != null && postBuffer.Length > 0)
{
// Using "this." makes the extension method kick in
await this.SendAsync(new ArraySegment <byte>(postBuffer), SocketFlags.None).ConfigureAwait(false);
}
}
