Intermittent connection failures

[nhanda03]

• Pip version: 8.1.2
• Python version: 2.7
• Operating System: centos 7

~]$ pip --version
pip 8.1.2 from /usr/lib/python2.7/site-packages (python 2.7)

~]$ uname -a
Linux host1.tom.com 3.10.0-327.28.2.el7.x86_64 #1 SMP Wed Aug 3 11:11:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Description:

Following error is seen intermittently while doing setuptools upgrade via pip

~]$ pip install -U setuptools
Exception:
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/usr/lib/python2.7/site-packages/pip/commands/install.py", line 299, in run
    requirement_set.prepare_files(finder)
  File "/usr/lib/python2.7/site-packages/pip/req/req_set.py", line 370, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "/usr/lib/python2.7/site-packages/pip/req/req_set.py", line 458, in _prepare_file
    req_to_install, finder)
  File "/usr/lib/python2.7/site-packages/pip/req/req_set.py", line 407, in _check_skip_installed
    finder.find_requirement(req_to_install, self.upgrade)
  File "/usr/lib/python2.7/site-packages/pip/index.py", line 442, in find_requirement
    all_candidates = self.find_all_candidates(req.name)
  File "/usr/lib/python2.7/site-packages/pip/index.py", line 400, in find_all_candidates
    for page in self._get_pages(url_locations, project_name):
  File "/usr/lib/python2.7/site-packages/pip/index.py", line 545, in _get_pages
    page = self._get_page(location)
  File "/usr/lib/python2.7/site-packages/pip/index.py", line 648, in _get_page
    return HTMLPage.get_page(link, session=self.session)
  File "/usr/lib/python2.7/site-packages/pip/index.py", line 757, in get_page
    "Cache-Control": "max-age=600",
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/sessions.py", line 487, in get
    return self.request('GET', url, **kwargs)
  File "/usr/lib/python2.7/site-packages/pip/download.py", line 378, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/sessions.py", line 475, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/sessions.py", line 617, in send
    r.content
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/models.py", line 741, in content
    self._content = bytes().join(self.iter_content(CONTENT_CHUNK_SIZE)) or bytes()
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/models.py", line 667, in generate
    raise ChunkedEncodingError(e)
ChunkedEncodingError: ("Connection broken: error(104, 'Connection reset by peer')", error(104, 'Connection reset by peer'))

[nhanda03]

Looks like an issue on my networking side.