requests.exceptions.ConnectionError: ('Connection aborted.', ResponseNotReady('Request-sent',))

[giantryansaul]

I wanted to offer this up not as an issue, but as a solution to one that I found today.

I had a test that when run on a specific server would always fail with this unhelpful message:
requests.exceptions.ConnectionError: ('Connection aborted.', ResponseNotReady('Request-sent',))

The test had multiple requests to the same client within a single task and a colleague suspected it was something to do with the connection from the first request not being properly closed.

After a lot of playing around with timeouts and attempting to close out the first connection before the next one was sent (both of which did not solve the issue), I found a stackoverflow article with the same issue:
http://stackoverflow.com/questions/30033516/single-session-multiple-post-get-in-python-requests

The quick and dirty solution was to update to requests 2.7.0. At the time of getting this error I was on 2.6.2. I also noticed that the default version for locust is on 2.4. If you are experiencing this issue, simply update to 2.7 and you should be good!

[Horcrux]

Huh, I had this same error in my own program. I simply followed this guide on updating to 2.7.0. Thanks for the tip!

Hi @giantryansaul

Would the pip request dependency be dependant on the version of python? A 'pip install locustio' on python 2.7.10 seems to give me 'python-requests/2.7.0'. I say this, as I have been logging request headers.

'User-Agent': 'python-requests/2.7.0 CPython/2.7.10 Linux/3.10.0-229.el7.x86_64'

[giantryansaul]

@aidylewis Looking at the fix from @cgoldberg the library requirements are specified as requests>=2.4.1 and not requests=2.4.1, so your pip request may have simply found 2.7.0 as the best match with python 2.7.10. That is about the extent of my pip knowledge though.