"schannel: failed to retrieve ALPN result" when running on Windows 7

[attibalazs]

I`m running into issues on Windows 7, did anyone else encounter this problem ?

  File "C:\Users\myuser\AppData\Local\Continuum\Anaconda3\lib\site-packages\homura.py", line 167, in curl
    c.perform()
pycurl.error: (35, 'schannel: failed to retrieve ALPN result')

Might be an issue related to curl:
curl/curl#840

Looks like this is fixed in the latest version of curl 7.50:
curl/curl@34855fe

[raunilillemets]

I have the same problem on Windows 7. Same script works on Windows 10. I am using Sentinelsat module version 0.7.1, which uses pycurl version 7.43.0.

Trace:
File "C:\Anaconda3\lib\site-packages\homura.py", line 274, in download hm.start() File "C:\Anaconda3\lib\site-packages\homura.py", line 196, in start raise e File "C:\Anaconda3\lib\site-packages\homura.py", line 179, in start self.curl() File "C:\Anaconda3\lib\site-packages\homura.py", line 167, in curl c.perform() pycurl.error: (35, 'schannel: failed to retrieve ALPN result')

@attibalazs Sorry for ignorance: I do not know how pycurl and curl versions are related. Does Your comment mean that pycurl should internally use a newer version of curl?

[attibalazs]

@raunilillemets i think pycurl wraps curl/libcurl, but double check please, it`s been a while since i looked int o this.

I did log a workaround here for sentinelsat https://github.com/ibamacsr/sentinelsat/issues/58
nothing fancy, i just went in and change the code to use requests instead of homura, which uses pycurl

[p]

This simply needs a pycurl rebuild against a recent libcurl.

[p]

New release is out.