view mercurial/policy.py @ 29599:e3dc96834126

url: drop support for proxying HTTP (not HTTPS) over CONNECT tunneling

It's been broken since cca59ef27e60, which made ui argument mandatory. I've
tried several combinations of HTTP/HTTPS proxying on old/new Python versions,
but I couldn't figure out how to reach this code path. Also, wrapping HTTP
connection by SSLSocket seems wrong. My understanding is that self.realhostport
is set by _generic_start_transaction() if HTTPS connection is tunneled.

This patch removes proxy tunneling from httpconnection.connect() assuming
that it was dead code from the beginning. Note that HTTPS over tunneling
should be handled by httpsconnection class.

# policy.py - module policy logic for Mercurial.
#
# Copyright 2015 Gregory Szorc <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from __future__ import absolute_import

import os
import sys

# Rules for how modules can be loaded. Values are:
#
#    c - require C extensions
#    allow - allow pure Python implementation when C loading fails
#    cffi - required cffi versions (implemented within pure module)
#    cffi-allow - allow pure Python implementation if cffi version is missing
#    py - only load pure Python modules
#
# By default, require the C extensions for performance reasons.
policy = 'c'
policynoc = ('cffi', 'cffi-allow', 'py')
policynocffi = ('c', 'py')

try:
    from . import __modulepolicy__
    policy = __modulepolicy__.modulepolicy
except ImportError:
    pass

# PyPy doesn't load C extensions.
#
# The canonical way to do this is to test platform.python_implementation().
# But we don't import platform and don't bloat for it here.
if '__pypy__' in sys.builtin_module_names:
    policy = 'cffi'

# Our C extensions aren't yet compatible with Python 3. So use pure Python
# on Python 3 for now.
if sys.version_info[0] >= 3:
    policy = 'py'

# Environment variable can always force settings.
policy = os.environ.get('HGMODULEPOLICY', policy)