[gradsusr] Accessing geos-5 servers using GrADS and curl

[Jennifer M Adams]

Can you share the output from ‘q config’ on your linux GrADS build? Also the output from ‘ldd grads’ (to see which libraries are linked with your build). Can you do an ‘ncdump’ on the URL? 
—Jennifer



> On Sep 28, 2019, at 3:34 PM, avi kojokro <kojokroavi at gmail.com> wrote:
> 
> Hi,
> I was trying to connect to this site and it asked for login details. I have such details and I enter them correctly I am able to access the site. However, I couldn't access the same site using GrADS, probably because GrADS doesn't have the needed login details and consequently fails to authenticate. 
> 
> I talked with James Potemra about it and he suggested to try this. However, in step 5 I get the following error in grads:
> Scanning self-describing file:  https://goldsmr4.gesdisc.eosdis.nasa.gov/dods/M2TMNXSLV
> syntax error, unexpected WORD_WORD, expecting SCAN_ATTR or SCAN_DATASET or SCAN_ERROR
> context: HTTP^ Basic: Access denied.
> sdfdeflev: nc_get_vara_double failed to read coordinate axis values
>  NetCDF: Authorization failure
> gadsdf: Failed to define X coordinate values.
> 
>  I get it when trying on both windows and a linux VM. 
> 
> The .netrc file contains the following:
> 
> machine urs.earthdata.nasa.gov
> login xxxxxx
> password yyyyyy
> machine goldsmr4.gesdisc.eosdis.nasa.gov
> login xxxxxx 
> password  yyyyyy
>  
> The .dodsrc file contains the following, on windows. (James wrote it needs to contain "remote OPeNDAP server access information". If that is the cause of the issue, what is the format?):
> 
> #HTTP.NETRC="C:\Users\OWNER\_netrc"
> #HTTP.COOKIEJAR="C:\Users\OWNER\_urs_cookies"
>  
> The cookie file, after curl is run, contains the following (on windows, the base64 was modified for this email): 
> # Netscape HTTP Cookie File
> # https://curl.haxx.se/docs/http-cookies.html
> # This file was generated by libcurl! Edit at your own risk.
> 
> .earthdata.nasa.gov	TRUE	/	FALSE	1568399835	urs_user_already_logged	yes
> #HttpOnly_urs.earthdata.nasa.gov	FALSE	/	FALSE	1568399835	_urs-gui_session	c5ad3b0da8eac8c3994ccda5c32a9fde
> .nasa.gov	TRUE	/	FALSE	0	nasa_gesdisc_data_archive eaweafpPJ2eERpdaefeOMyf5dsdafeaJVtEIEWSDFefwaMuPFD36eaeadHYuzievmLDSFWSF1XoXHTnXB8duM3+gshSDESTUmExUadCqWy0SEOxKdafeP9f6bs51XC48BhZaMuqMfLbARWEFDS342MA==
>  
> Has anyone encountered this issue and knows how to fix it? 
>  Avi
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--
Jennifer Miletta Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
George Mason University