[gdal-dev] Re: Rasterlite / WSGI problem

[Even Rouault]

> I have tried to set error message with CPLError and return CE_Failure,
> but the error message set here is lost and mapserver gets something
> like "error reading block 0 0 ..".

Yes, the generic raster layer will also reports an error as soon CE_Failure is
returned, so mapserver will just get the last one that has been emitted, unless
stderr is logged and you watch the logs.