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[IDV #MLC-476049]: Inability to access NOAA ESRL thredds server in IDV 5.3 - self signed certificate problem?



Hi Walter,

First off, the certificate at https://www.esrl.noaa.gov/gsd/thredds/catalog.html
is not self-signed, it has been issued by DigiCert. As far as I can tell it is a
valid certificate from a Certificate Authority.

However, I am getting a 502 Bad Gateway error when trying to access that URL.

Patrick, is there a problem with the THREDDS server at that URL?

Best,

Unidata IDV Support


> Inability to access NOAA ESRL thredds server in IDV 5.3 - self signed 
> certificate problem?
> 
> Can't connect... How does IDV handle a self signed certificate?
> 
> In IDV I changed my catalog entry for the esrl server to:
> 
> https://esrl.noaa.gov/gsd/thredds/catalog.xml
> 
> It connects and gives me catalog entries, but fails to retrieve a
> particular data set. While exploring the error I saw this after
> selecting a particular hrrr model native grid model run:
> 
> https://137.75.133.18:8443/gsd/thredds/dodsC/hrrr/conus/wrfnat/1701300001400
> 
> Pasted it into firefox browser and got a warning about an unsigned
> certificate. I told firefox to accept it anyway and received:
> 
> Error {
> code = 400;
> message = "Unrecognized request";
> };
> 
> which I assume means firefox doesn't know how to talk like a thredds
> server, but at least the site was connected to.
> 
> Looks like IDV v5.3 on Windows 7 can't talk to this thredds server. How
> does IDV handle a self signed certificate?
> 
> On Jan 9th, I couldn't even get into their thredds server, but Patrick
> Hildreth from ESRL/GSD/ITS/DSG was working on the server. He replied:
> 
> "On 1/9/2017 2:26 PM, Patrick Hildreth - NOAA Affiliate wrote:
> > Hi Walter,
> >
> > We've been required to update the thredds server to use https only and
> > that work required some configuration changes which completed earlier
> > today. You should be able to access the service presently though you may
> > get a warning about the self-signed certificate the server uses for
> > authentication.
> >
> > Are you still having problems accessing the thredds server?
> >
> > regards,
> > Patrick Hildreth
> > ESRL/GSD/ITS/DSG "
> 
> 


Ticket Details
===================
Ticket ID: MLC-476049
Department: Support IDV
Priority: Normal
Status: Open
===================
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NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.