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request.py
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Sun, Jul 6, 09:49

request.py
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from base64 import b64encode
from ..packages.six import b
ACCEPT_ENCODING = 'gzip,deflate'
def make_headers(keep_alive=None, accept_encoding=None, user_agent=None,
basic_auth=None, proxy_basic_auth=None, disable_cache=None):
"""
Shortcuts for generating request headers.
:param keep_alive:
If ``True``, adds 'connection: keep-alive' header.
:param accept_encoding:
Can be a boolean, list, or string.
``True`` translates to 'gzip,deflate'.
List will get joined by comma.
String will be used as provided.
:param user_agent:
String representing the user-agent you want, such as
"python-urllib3/0.6"
:param basic_auth:
Colon-separated username:password string for 'authorization: basic ...'
auth header.
:param proxy_basic_auth:
Colon-separated username:password string for 'proxy-authorization: basic ...'
auth header.
:param disable_cache:
If ``True``, adds 'cache-control: no-cache' header.
Example::
>>> make_headers(keep_alive=True, user_agent="Batman/1.0")
{'connection': 'keep-alive', 'user-agent': 'Batman/1.0'}
>>> make_headers(accept_encoding=True)
{'accept-encoding': 'gzip,deflate'}
"""
headers = {}
if accept_encoding:
if isinstance(accept_encoding, str):
pass
elif isinstance(accept_encoding, list):
accept_encoding = ','.join(accept_encoding)
else:
accept_encoding = ACCEPT_ENCODING
headers['accept-encoding'] = accept_encoding
if user_agent:
headers['user-agent'] = user_agent
if keep_alive:
headers['connection'] = 'keep-alive'
if basic_auth:
headers['authorization'] = 'Basic ' + \
b64encode(b(basic_auth)).decode('utf-8')
if proxy_basic_auth:
headers['proxy-authorization'] = 'Basic ' + \
b64encode(b(proxy_basic_auth)).decode('utf-8')
if disable_cache:
headers['cache-control'] = 'no-cache'
return headers

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