Connection fails when the first host in the list is down

[jplana]

Connection fails when the first host in the list is down

[lavagetto]

Can you add a sample code that would reproduce this?

I'm not sure the problem is where you are thinking it is.

[cyap13]

Ok the bug occurs when you have an incorrect port.
host_list = (
('host1', 4000), # incorrect port
('host2', 4001), # never gets here because TimeoutError not caught and handled
)
c = Client(host=host_list, read_timeout=5, allow_reconnect=True, allow_redirect=True)

[lavagetto]

So... if you have an incorrect configuration you get an exception. Not that strange, but I'll try to handle that gracefully - it's not easy, as a TimeoutError can happen also because you reached the urllib request timeout.

[lavagetto]

Also, trying to reproduce your bug, I get a different (as expected) error - urllib3.exceptions.MaxRetryError just when I try to instantiate etcd.Client

>>> host_list = ( ('127.0.0.1', 4000), ('127.0.0.1', 4001) )
>>> c = etcd.Client(host=host_list, read_timeout=5, allow_reconnect=True, allow_redirect=True)
[CUT]
urllib3.exceptions.MaxRetryError: HTTPConnectionPool(host='127.0.0.1', port=4000): Max retries exceeded with url: /v2/machines (Caused by ProtocolError('Connection aborted.', error(111, 'Connection refused')))

Which is a perfectly fine way to fail in my opinion, but I can handle that gracefully I guess.

Still, this is not the problem you reported, so...