protected override bool Read(IntPtr dataOut, int bytesToRead, out int bytesRead, CefResourceReadCallback callback)
{
// Backwards compatibility. ReadResponse will be called.
callback.Dispose();
bytesRead = -1;
return(false);
}
protected override bool Read(IntPtr dataOut, int bytesToRead, out int bytesRead, CefResourceReadCallback callback)
{
bytesRead = 0;
//We don't need the callback, as it's an unmanaged resource we should dispose it (could wrap it in a using statement).
callback.Dispose();
if (Stream is null)
{
return(false);
}
//Data out represents an underlying unmanaged buffer (typically 64kb in size).
//We reuse a temp buffer where possible
if (tempBuffer is null || tempBuffer.Length < bytesToRead)
{
tempBuffer = new byte[bytesToRead];
}
//Only read the number of bytes that can be written to dataOut
bytesRead = Stream.Read(tempBuffer, 0, bytesToRead);
// To indicate response completion set bytesRead to 0 and return false
if (bytesRead == 0)
{
return(false);
}
using (var safeBuffer = new CefSafeBuffer(dataOut, (ulong)bytesRead))
using (var dataOutStream = new UnmanagedMemoryStream(safeBuffer, 0, bytesRead, FileAccess.Write))
{
//We need to use bytesRead instead of tempbuffer.Length otherwise
//garbage from the previous copy would be written to dataOut
dataOutStream.Write(tempBuffer, 0, bytesRead);
}
return(bytesRead > 0);
}