public static unsafe SocketError SendToAsync(SafeCloseSocket handle, byte[] buffer, int offset, int count, SocketFlags socketFlags, Internals.SocketAddress socketAddress, OverlappedAsyncResult asyncResult)
{
// Set up asyncResult for overlapped WSASendTo.
asyncResult.SetUnmanagedStructures(buffer, offset, count, socketAddress, false /* don't pin RemoteEP*/);
try
{
int bytesTransferred;
SocketError errorCode = Interop.Winsock.WSASendTo(
handle,
ref asyncResult._singleBuffer,
1, // There is only ever 1 buffer being sent.
out bytesTransferred,
socketFlags,
asyncResult.GetSocketAddressPtr(),
asyncResult.SocketAddress.Size,
asyncResult.OverlappedHandle,
IntPtr.Zero);
return(asyncResult.ProcessOverlappedResult(errorCode == SocketError.Success, bytesTransferred));
}
catch
{
asyncResult.ReleaseUnmanagedStructures();
throw;
}
}
public static unsafe SocketError ReceiveAsync(SafeCloseSocket handle, byte[] buffer, int offset, int count, SocketFlags socketFlags, OverlappedAsyncResult asyncResult)
{
// Set up asyncResult for overlapped WSARecv.
asyncResult.SetUnmanagedStructures(buffer, offset, count, null, false /* don't pin null RemoteEP*/);
try
{
// This can throw ObjectDisposedException.
int bytesTransferred;
SocketError errorCode = Interop.Winsock.WSARecv(
handle,
ref asyncResult._singleBuffer,
1,
out bytesTransferred,
ref socketFlags,
asyncResult.OverlappedHandle,
IntPtr.Zero);
return(asyncResult.ProcessOverlappedResult(errorCode == SocketError.Success, bytesTransferred));
}
catch
{
asyncResult.ReleaseUnmanagedStructures();
throw;
}
}
public static unsafe SocketError SendAsync(SafeCloseSocket handle, IList <ArraySegment <byte> > buffers, SocketFlags socketFlags, OverlappedAsyncResult asyncResult)
{
// Set up asyncResult for overlapped WSASend.
asyncResult.SetUnmanagedStructures(buffers);
try
{
// This can throw ObjectDisposedException.
int bytesTransferred;
SocketError errorCode = Interop.Winsock.WSASend(
handle,
asyncResult._wsaBuffers,
asyncResult._wsaBuffers.Length,
out bytesTransferred,
socketFlags,
asyncResult.OverlappedHandle,
IntPtr.Zero);
return(asyncResult.ProcessOverlappedResult(errorCode == SocketError.Success, bytesTransferred));
}
catch
{
asyncResult.ReleaseUnmanagedStructures();
throw;
}
}
public static unsafe SocketError ReceiveFromAsync(SafeCloseSocket handle, byte[] buffer, int offset, int count, SocketFlags socketFlags, Internals.SocketAddress socketAddress, OverlappedAsyncResult asyncResult)
{
// Set up asyncResult for overlapped WSARecvFrom.
asyncResult.SetUnmanagedStructures(buffer, offset, count, socketAddress, true);
try
{
int bytesTransferred;
SocketError errorCode = Interop.Winsock.WSARecvFrom(
handle,
ref asyncResult._singleBuffer,
1,
out bytesTransferred,
ref socketFlags,
asyncResult.GetSocketAddressPtr(),
asyncResult.GetSocketAddressSizePtr(),
asyncResult.OverlappedHandle,
IntPtr.Zero);
return(asyncResult.ProcessOverlappedResult(errorCode == SocketError.Success, bytesTransferred));
}
catch
{
asyncResult.ReleaseUnmanagedStructures();
throw;
}
}
public static unsafe SocketError ReceiveAsync(SafeCloseSocket handle, byte[] buffer, int offset, int count, SocketFlags socketFlags, OverlappedAsyncResult asyncResult)
{
// Set up asyncResult for overlapped WSARecv.
asyncResult.SetUnmanagedStructures(buffer, offset, count, null);
try
{
int bytesTransferred;
SocketError errorCode = Interop.Winsock.WSARecv(
handle.DangerousGetHandle(), // to minimize chances of handle recycling from misuse, this should use DangerousAddRef/Release, but it adds too much overhead
ref asyncResult._singleBuffer,
1,
out bytesTransferred,
ref socketFlags,
asyncResult.DangerousOverlappedPointer, // SafeHandle was just created in SetUnmanagedStructures
IntPtr.Zero);
GC.KeepAlive(handle); // small extra safe guard against handle getting collected/finalized while P/Invoke in progress
return(asyncResult.ProcessOverlappedResult(errorCode == SocketError.Success, bytesTransferred));
}
catch
{
asyncResult.ReleaseUnmanagedStructures();
throw;
}
}
public static unsafe SocketError SendAsync(SafeCloseSocket handle, IList <ArraySegment <byte> > buffers, SocketFlags socketFlags, OverlappedAsyncResult asyncResult)
{
// Set up asyncResult for overlapped WSASend.
asyncResult.SetUnmanagedStructures(buffers);
try
{
int bytesTransferred;
SocketError errorCode = Interop.Winsock.WSASend(
handle.DangerousGetHandle(), // to minimize chances of handle recycling from misuse, this should use DangerousAddRef/Release, but it adds too much overhead
asyncResult._wsaBuffers,
asyncResult._wsaBuffers.Length,
out bytesTransferred,
socketFlags,
asyncResult.DangerousOverlappedPointer, // SafeHandle was just created in SetUnmanagedStructures
IntPtr.Zero);
GC.KeepAlive(handle); // small extra safe guard against handle getting collected/finalized while P/Invoke in progress
return(asyncResult.ProcessOverlappedResult(errorCode == SocketError.Success, bytesTransferred));
}
catch
{
asyncResult.ReleaseUnmanagedStructures();
throw;
}
}
public static unsafe SocketError SendAsync(SafeCloseSocket handle, byte[] buffer, int offset, int count, SocketFlags socketFlags, OverlappedAsyncResult asyncResult)
{
// Set up unmanaged structures for overlapped WSASend.
asyncResult.SetUnmanagedStructures(buffer, offset, count, null);
try
{
// This can throw ObjectDisposedException.
int bytesTransferred;
SocketError errorCode = Interop.Winsock.WSASend(
handle,
ref asyncResult._singleBuffer,
1, // There is only ever 1 buffer being sent.
out bytesTransferred,
socketFlags,
asyncResult.OverlappedHandle,
IntPtr.Zero);
return(asyncResult.ProcessOverlappedResult(errorCode == SocketError.Success, bytesTransferred));
}
catch
{
asyncResult.ReleaseUnmanagedStructures();
throw;
}
}
