Download of lyon dataset fails

[elemoine]

The downloading of the lyon dataset fails for me:

$ lopocs demo --sample lyon --work-dir . --cesium         
[2017-06-23 09:41:48] Using sample data lyon: lyon.laz ... ok                                            
{'Access-Control-Allow-Origin': '*', 'Content-Encoding': 'gzip', 'Last-Modified': 'Mon, 22 May 2017 14:56:13 GMT', 'Content-Type': 'application/octet-stream', 'Connection': 'keep-alive', 'Server': 'nginx/1.6.2', 'Transfer-Encoding': 'chunked', 'Date': 'Fri, 23 Jun 2017 07:41:49 GMT'}                                
Traceback (most recent call last):                  
  File "/home/elemoine/.virtualenvs/lopocs/bin/lopocs", line 11, in <module>                             
    load_entry_point('lopocs', 'console_scripts', 'lopocs')()                                            
  File "/home/elemoine/.virtualenvs/lopocs/lib/python3.5/site-packages/click/core.py", line 722, in __call__                                                                                                       
    return self.main(*args, **kwargs)               
  File "/home/elemoine/.virtualenvs/lopocs/lib/python3.5/site-packages/click/core.py", line 697, in main 
    rv = self.invoke(ctx)                           
  File "/home/elemoine/.virtualenvs/lopocs/lib/python3.5/site-packages/click/core.py", line 1066, in invoke                                                                                                        
    return _process_result(sub_ctx.command.invoke(sub_ctx))                                              
  File "/home/elemoine/.virtualenvs/lopocs/lib/python3.5/site-packages/click/core.py", line 895, in invoke                                                                                                         
    return ctx.invoke(self.callback, **ctx.params)  
  File "/home/elemoine/.virtualenvs/lopocs/lib/python3.5/site-packages/click/core.py", line 535, in invoke                                                                                                         
    return callback(*args, **kwargs)                
  File "/home/elemoine/src/lopocs/lopocs/cli.py", line 489, in demo                                      
    download('Downloading sample', download_link, dest)                                                  
  File "/home/elemoine/src/lopocs/lopocs/cli.py", line 104, in download                                  
    length = int(r.headers['content-length'])       
  File "/home/elemoine/.virtualenvs/lopocs/lib/python3.5/site-packages/requests/structures.py", line 54, in __getitem__                                                                                            
    return self._store[key.lower()][1]              
KeyError: 'content-length'

The issue is related to the response not having a content-length header. For some reason, this header is no longer present.

@ldgeo any idea?

[ldgeo]

Due to the gzip module used in our download server that rewrites headers, should be ok now.