Get SRTM various network errors (Cannot reach OpenTopography web service)

[domlysz]

If you encounter one of the following error log message, please do not open a new issue.

Typical error messages

[WinError 10061] No connection could be made because the target machine actively refused it

TimeoutError: [WinError 10060] A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond

RuntimeError: Error: Unable to open raster

AttributeError: 'URLError' object has no attribute 'code'

ConnectionResetError: [Errno 104] Connection reset by peer

Explanation :

The Get SRTM operator rely on third party web services that provides API to request SRTM data. Taking this into consideration, this function can be broken at any time (server closed, in maintenance or overloaded). It also rely on your internet connexion and can fails due to any network issue (no internet, instable connexion, proxy of firewall missconfiguration).

More infos about the get SRTM operator : https://github.com/domlysz/BlenderGIS/wiki/SRTM

Workarounds

It just means that the service is down for the moment and it will likely be restored in the coming days, so just be patient. Meanwhile, as mentioned in the wiki, there is another provider for SRTM data, users can select it in the addon preferences if the first one fails.

Also, keep in mind BlenderGIS can import any kind of Digital Elevation Model in Geotiff format. The Get SRTM button is just a nice shortcut to import the really common, worldwide and free SRTM elevation datasource, but the core functionnality of the plug-in is to add the ability to import commons spatial data formats, not to provides datasource.

SRTM data can be downloaded in geotiff format from NASA / USGS web site and then imported into Blender with the import Georaster DEM operator of BlenderGIS. Others available elevation datasources depend on your location (some country provides national DEM in opendata) and certainly on the price you're willing to pay.