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1039113959 I_kwDOAMm_X849757n 5913 Invalid characters in OpenDAP URL pmartineauGit 57886986 closed 0     5 2021-10-29T02:54:14Z 2024-04-28T20:55:17Z 2024-04-28T20:55:17Z NONE      

Hello,

I have successfully opened an OpenDAP URL with ds = xarray.open_dataset(url) However, after selecting a subset with ds = ds.isel(time=0) and attempting to load the data with ds.load(), I get the following error:

HTTP Status 400 – Bad Request: Invalid character found in the request

target. The valid characters are defined in RFC 7230 and RFC 3986

I suspect the reason is that square brackets are passed in the URL when attempting to load: ...zg_6hrPlevPt_MIROC6_historical_r1i1p1f1_gn_185001010600-185101010000.nc.dods?zg.zg[0][0:6][0:127][0:255]] because of the index selection with .isel()

In fact, some servers do forbid square brackets: https://www.unidata.ucar.edu/mailing_lists/archives/thredds/2020/msg00056.html

Would it be possible to provide an option to encode URLs? ( [ becomes %5B, and ] becomes %5D )

Or, instead of loading directly with ds.load(), is there a way for me to retrieve the URL with offending brackets that is generated automatically by xarray, encode it myself, and then use ds2 = xarray.load_dataset(encoded_url) to load?

Thank you for your help!

 
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   not_planned xarray 13221727 issue

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