I'm trying to enable bigwig support in Galaxy. Besides the sniff section which is probably not working, I'm trying to enable at least the visualization on a UCSC mirror. I see that galaxy link to display includes this hgt.customText

which contains the track definition:

track type=bigWig name="Pu1_100219.bw" bigDataUrl=http://host001.instruments.ifom-ieo-campus.it:8080/display_application/e00d4fc8bba8b6c5/ucsc_bigWig/campus/a3e0990f3de110b5/data/galaxy_e00d4fc8bba8b6c5.bw db=hg18

Unfortunately the genome browser (a local mirror) says:

Error udc couldn't read 4 bytes from http://host001.instruments.ifom-ieo-campus.it:8080/display_application/e00d4fc8bba8b6c5/ucsc_bigWig/campus/a3e0990f3de110b5/data/galaxy_e00d4fc8bba8b6c5.bw, did read 0

I've tried to fetch the bigwig file in bigDataUrl link with wget and I'm able to reach it.

Needless to say, the bigwig file is a proper one, I've tried to load it from another location and it can be displayed.

At this point I don't know how to debug it... 

@UCSC people: when am I supposed to get that error? Which conditions raise it?

@Galaxy people: since the link is valid, why I cannot present it to UCSC?

Thanks

d