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pythonurllib3

Why HTTPSConnectionPool doesn't work when PoolManager does?

I have tested a 'POST' request with both PoolManager and HTTPSConnectionPool. The first one works, the other throw me a :

urllib3.exceptions.MaxRetryError: 
HTTPSConnectionPool(host='https://some.url.com', port=443): 
Max retries exceeded with url: /some-api (Caused by <class 'socket.gaierror'>:
[Errno -2] Name or service not known)

Here's my code for PoolManager:

import urllib3

HOST = 'https://some.url.com'
PORT = 443
PATH = '/some-api'
xml_request = '<some xml tree/>'

manager = urllib3.PoolManager()
res = manager.request('POST', HOST+PATH, {'req':xml_request})

and for HTTPSConnectonPool:

manager = urllib3.HTTPSConnectionPool(HOST, port=PORT)
res = manager.request('POST', PATH, {'req':xml_request})
Solution

  • https://some.url.com is not a hostname or IP address, it's a URL. So you're feeding the wrong information to HTTPSConnectionPool.

    Furthermore, PoolManager and HTTPSConnectionPool are not at the same abstraction level. PoolManager manages ConnectionPool instances for you.