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Description of problem:
Each request inside WBEMConnection opens new TCP connection to CIMOM, which includes TLS handshake (if enabled). This slows down whole communication a lot.

Version-Release number of selected component (if applicable):
pywbem-0.7.0-16.20130827svn625.el7.noarch

How reproducible:
always

Steps to Reproduce:

import pywbem
c = pywbem.WBEMConnection("https://localhost", ("root", "opensesame"))
while True:
    c.EnumerateInstanceNames('LMI_Identity')

Actual results:
in wireshark, I see lot of separate TCP connections

Expected results:
One TCP connection with HTTP keep-alive enabled.

Created attachment 818282 [details]
Highly experimental patch

Using Connection: Keep-Alive did not have any significant performance improvements, I'm closing the bug for now.