id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking
372	mapfile raster layer won't open local network shared tiff images	alvinleelwz	Jeff McKenna	"Hi, there. I am not sure this is a defect or what.
In the map file, turning the `DEBUG ON` for LAYER and `DEBUG 5` for MAP, the ms_error.txt reports the following:
{{{
[Sat Feb 26 10:41:48 2022].874000 msDrawRasterLayerLow(image): entering.
[Sat Feb 26 10:41:48 2022].874000 msDrawRasterLayerLow(image): Filename is: //192.168.210.150/some/shared_dir/a_float_type_image.tif
[Sat Feb 26 10:41:48 2022].885000 msDrawRasterLayerLow(image): Path is: //192.168.210.150/some/shared_dir/a_float_type_image.tif
[Sat Feb 26 10:41:48 2022].923000 Corrupt, empty or missing file '//192.168.210.150/some/shared_dir/a_float_type_image.tif' for layer 'image' ... ignoring this missing data.  
[Sat Feb 26 10:41:48 2022].923000 msDrawMap(): Layer 0 (image), 0.054s
}}}
However placing the tif image in the shape data dir, openlayers show correctly in the browser.

Also, `gdalinfo.exe //192.168.210.150/some/shared_dir/a_float_type_image.tif` reports no error, as well as  `gdal.Open('//192.168.210.150/some/shared_dir/a_float_type_image.tif')` in python.

My guessing, somehow, in mapraster.c line: 650, `GDALOpenEx` returned NULL for path like `//192.168.210.150/some/shared_dir/a_float_type_image.tif`."	defect	closed	major	5.0.0 release	MS4W - Base	4.0.5	invalid