Log connection error in remote manager

For an unknown reason, I cannot connect the Conan server on my LAN from a Windows 7 machine. It was working before but now I get the following error when installing:

WARN: Unable to connect to myconan=http://myconan/

My others machine are still able to connect to the server.

Looking in the code, I found the message is printed when a ConnectionError is raised in remote_manager.py but there is no details about the error.

It could be nice if the error was logged. At least I hope it could help me to understand why the connection is not possible anymore.

[osechet]

I’m now able to reproduce the error on any OS with any conan server.

• On Windows, in the control panel, set a proxy to a fake ip.
• On Linux, export the http_proxy and https_proxy variables (i.e. export http_proxy=http://not.a.proxy:8080; export https_proxy=http://not.a.proxy:8080)

Then call conan search -r conan.io. Since conan cannot go through the given proxy, it raises a ConnectionError. I tried from the sources and logged the error and I get: ERROR :remote_manager.py[154]: HTTPSConnectionPool(host='server.conan.io', port=443): Max retries exceeded with url: /v1/conans/search (Caused by ProxyError('Cannot connect to proxy.', NewConnectionError('<requests.packages.urllib3.connection.VerifiedHTTPSConnection object at 0x7fdc96cb2610>: Failed to establish a new connection: [Errno -2] Name or service not known',))) [2016-11-23 11:07:31,995]

It’s quite verbose but I can see that the error is caused by a ProxyError. With such a log, I would have found my mistake faster.

[memsharded]

Released in 0.16.