Apparently this check fails
if (_deflatedStream.CanSeek)
_deflatedStream.Seek(6, SeekOrigin.Current);
Even though the stream claims it supports seek, it actually does not, resulting in NotImplementedException being thrown.
I suspect it has something to do with the different implementation of streams in background agents, since the streams in the main assembly work as expected.
As a workaround, I removed CanSeek check and always do 6 byte reads and it seems to work even for background agents.
Apparently this check fails
Even though the stream claims it supports seek, it actually does not, resulting in NotImplementedException being thrown.
I suspect it has something to do with the different implementation of streams in background agents, since the streams in the main assembly work as expected.
As a workaround, I removed CanSeek check and always do 6 byte reads and it seems to work even for background agents.