boinc informs me that it's having trouble downloading a WU (7447_largescale_large_fullatom_relax_dec7447_1_01_1.pdb_422_12_0)

in the message log boinc just says "error 500", now we all know it just says 500 for a veriety of things, and that's a seperate issue, however because i've never had this problem with rosetta before i thought i'd look into it, and did a capture with Ethereal, which revealed that the server is returning "HTTP 416 Requested Range Not Satisfiable"

i'm using a standard client, and i can email the ethereal capture to anyone who's interested in looking, incase they might be able to find out why the server is returning a 416 (i guess there's something wrong with the request BOINC is sending)

i just thought i'd bring this to the attention of the admins especially, however i'm not sure if this is a rosetta problem or a boinc problem

like i said, anyone who's interested in the capture (for 2 files with the same error) please send an email to leec100@hotmail.com with a subject of "BOINC HTTP 416"
anything else will be filtered as spam


if an admin/moderator would like to make comment if this should go in the Miscellaneous Work Unit Errors thread then i'd be happy to repost there

feedback from anyone else is welcome

i've not changed anything except for increasing my "connect to network" setting recently, i normally use a proxy server, but i tried without and just got the same error (boinc saying 500, ethereal saying 416 for both files)

incase it helps/matters, the URLs for the files are:
https://boinc.bakerlab.org/rosetta/download/114/boinc_bb_3mer_paths.txt
https://boinc.bakerlab.org/rosetta/download/6d/dec7447_1_01_1.loopfile.gz

oh, i'm able to download other rosetta WUs just fine, and have no problems with other projects

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boinc informs me that it's having trouble downloading a WU (7447_largescale_large_fullatom_relax_dec7447_1_01_1.pdb_422_12_0)

in the message log boinc just says "error 500", now we all know it just says 500 for a veriety of things, and that's a seperate issue, however because i've never had this problem with rosetta before i thought i'd look into it, and did a capture with Ethereal, which revealed that the server is returning "HTTP 416 Requested Range Not Satisfiable"

That's a BOINC problem, rather than one specific to Rosetta.

By any chance, are you behind an HTTP proxy?

If so, there's a bug report in the BOINC Bugzilla database that relates to this problem.

If you dig through the Ethereal trace, you should be able to extract the name of the file that's failing to download. Go into the Boinc/projects/boinc.bakerlab.org_rosetta directory, look for the file in question, and if it's there, delete it. Then try the download again, and see what happens.

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That's a BOINC problem, rather than one specific to Rosetta.

thought as much, just that i've never had this happened with any project before, so thought it might have been a configuration issue specific to rosetta (telling boinc to request data the wrong way prehaps, from what i saw in the capture, boinc was requesting the data as bytes, but i think the server wanted to deliver the files in gzip format, i could be wrong though)

By any chance, are you behind an HTTP proxy?

as stated yes, i normally use an HTTP proxy, but i did try without (i only use a proxy for performance reasons, but have a direct connection to the net available if needed) however a direct connection returned exactly the same response

Go into the Boinc/projects/boinc.bakerlab.org_rosetta directory, look for the file in question, and if it's there, delete it. Then try the download again, and see what happens.

surprisingly this worked, the files were present, i stopped the client and appended .bak to the end of each (just incase i needed them back later) restarted boinc and it happily started downloading the files (with the option to use a proxy enabled as well), quite odd

i guess boinc was rather confused about something if a file/disk issue causes it to have networking trouble preventing it from downloading a file lol
i fail to see how removing the files caused to to request the file with the correct headers, but then i'm not a programmer

but thanks anyway, the WU is in my queue ready to crunch now, i'll post back if i have any further issues with this


on a slightly seperate issue, as you seem to know about the innards of BOINC
i've got a working socks proxy on my network, other apps are able to use it, however when i tried to use it with boinc (after checking that i was using the correct settings) it didn't want to co-operate, is this also a known issue (prehaps a socks version issue, as v4 and v5 are quite different)

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By any chance, are you behind an HTTP proxy?

as stated yes, i normally use an HTTP proxy, but i did try without (i only use a proxy for performance reasons, but have a direct connection to the net available if needed) however a direct connection returned exactly the same response

Lee, in the case of BOINC projects, I believe using a proxy (if you have the alternative of connecting directly, as in your case) is counter-productive (unless you have say 50 BOINC PCs, some of which may eventually download the same data files). Even then, most proxies don't even cache files over some size, e.g. 200K, so you don't gain anything anyway (if you use the default config of a proxy like Squid).

On the other hand, a socks-gateway is almost as good as going directly. Apparently BOINC-Unix supports both socks v4/v5 (see http://boinc.berkeley.edu/client_unix.php, I've no idea about the Win though.

IMO proxies/socks are a thing of the past, unless we're talking 1000+ PCs browsing over the same link, or for some sort of "anonymiser". Also, some ISPs in small countries with slow/pricey international links implement such transparent proxies too.

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