mirror of
https://github.com/rembo10/headphones.git
synced 2026-07-14 13:04:00 +01:00
Adding Requests library
This commit is contained in:
@@ -0,0 +1,884 @@
|
||||
# -*- coding: utf-8 -*-
|
||||
|
||||
"""
|
||||
requests.models
|
||||
~~~~~~~~~~~~~~~
|
||||
|
||||
This module contains the primary objects that power Requests.
|
||||
"""
|
||||
|
||||
import os
|
||||
import socket
|
||||
from datetime import datetime
|
||||
from io import BytesIO
|
||||
|
||||
from .hooks import dispatch_hook, HOOKS
|
||||
from .structures import CaseInsensitiveDict
|
||||
from .status_codes import codes
|
||||
|
||||
from .auth import HTTPBasicAuth, HTTPProxyAuth
|
||||
from .cookies import cookiejar_from_dict, extract_cookies_to_jar, get_cookie_header
|
||||
from .packages.urllib3.exceptions import MaxRetryError, LocationParseError
|
||||
from .packages.urllib3.exceptions import TimeoutError
|
||||
from .packages.urllib3.exceptions import SSLError as _SSLError
|
||||
from .packages.urllib3.exceptions import HTTPError as _HTTPError
|
||||
from .packages.urllib3 import connectionpool, poolmanager
|
||||
from .packages.urllib3.filepost import encode_multipart_formdata
|
||||
from .defaults import SCHEMAS
|
||||
from .exceptions import (
|
||||
ConnectionError, HTTPError, RequestException, Timeout, TooManyRedirects,
|
||||
URLRequired, SSLError, MissingSchema, InvalidSchema, InvalidURL)
|
||||
from .utils import (
|
||||
get_encoding_from_headers, stream_untransfer, guess_filename, requote_uri,
|
||||
stream_decode_response_unicode, get_netrc_auth, get_environ_proxies,
|
||||
to_key_val_list, DEFAULT_CA_BUNDLE_PATH, parse_header_links, iter_slices)
|
||||
from .compat import (
|
||||
cookielib, urlparse, urlunparse, urljoin, urlsplit, urlencode, str, bytes,
|
||||
StringIO, is_py2, chardet, json, builtin_str, numeric_types)
|
||||
|
||||
REDIRECT_STATI = (codes.moved, codes.found, codes.other, codes.temporary_moved)
|
||||
CONTENT_CHUNK_SIZE = 10 * 1024
|
||||
|
||||
|
||||
class Request(object):
|
||||
"""The :class:`Request <Request>` object. It carries out all functionality
|
||||
of Requests. Recommended interface is with the Requests functions.
|
||||
"""
|
||||
|
||||
def __init__(self,
|
||||
url=None,
|
||||
headers=dict(),
|
||||
files=None,
|
||||
method=None,
|
||||
data=dict(),
|
||||
params=dict(),
|
||||
auth=None,
|
||||
cookies=None,
|
||||
timeout=None,
|
||||
redirect=False,
|
||||
allow_redirects=False,
|
||||
proxies=None,
|
||||
hooks=None,
|
||||
config=None,
|
||||
prefetch=True,
|
||||
_poolmanager=None,
|
||||
verify=None,
|
||||
session=None,
|
||||
cert=None):
|
||||
|
||||
#: Dictionary of configurations for this request.
|
||||
self.config = dict(config or [])
|
||||
|
||||
#: Float describes the timeout of the request.
|
||||
# (Use socket.setdefaulttimeout() as fallback)
|
||||
self.timeout = timeout
|
||||
|
||||
#: Request URL.
|
||||
#: Accept objects that have string representations.
|
||||
try:
|
||||
self.url = unicode(url)
|
||||
except NameError:
|
||||
# We're on Python 3.
|
||||
self.url = str(url)
|
||||
except UnicodeDecodeError:
|
||||
self.url = url
|
||||
|
||||
#: Dictionary of HTTP Headers to attach to the :class:`Request <Request>`.
|
||||
self.headers = dict(headers or [])
|
||||
|
||||
#: Dictionary of files to multipart upload (``{filename: content}``).
|
||||
self.files = None
|
||||
|
||||
#: HTTP Method to use.
|
||||
self.method = method
|
||||
|
||||
#: Dictionary, bytes or file stream of request body data to attach to the
|
||||
#: :class:`Request <Request>`.
|
||||
self.data = None
|
||||
|
||||
#: Dictionary or byte of querystring data to attach to the
|
||||
#: :class:`Request <Request>`. The dictionary values can be lists for representing
|
||||
#: multivalued query parameters.
|
||||
self.params = None
|
||||
|
||||
#: True if :class:`Request <Request>` is part of a redirect chain (disables history
|
||||
#: and HTTPError storage).
|
||||
self.redirect = redirect
|
||||
|
||||
#: Set to True if full redirects are allowed (e.g. re-POST-ing of data at new ``Location``)
|
||||
self.allow_redirects = allow_redirects
|
||||
|
||||
# Dictionary mapping protocol to the URL of the proxy (e.g. {'http': 'foo.bar:3128'})
|
||||
self.proxies = dict(proxies or [])
|
||||
|
||||
# If no proxies are given, allow configuration by environment variables
|
||||
# HTTP_PROXY and HTTPS_PROXY.
|
||||
if not self.proxies and self.config.get('trust_env'):
|
||||
self.proxies = get_environ_proxies()
|
||||
|
||||
self.data = data
|
||||
self.params = params
|
||||
self.files = files
|
||||
|
||||
#: :class:`Response <Response>` instance, containing
|
||||
#: content and metadata of HTTP Response, once :attr:`sent <send>`.
|
||||
self.response = Response()
|
||||
|
||||
#: Authentication tuple or object to attach to :class:`Request <Request>`.
|
||||
self.auth = auth
|
||||
|
||||
#: CookieJar to attach to :class:`Request <Request>`.
|
||||
if isinstance(cookies, cookielib.CookieJar):
|
||||
self.cookies = cookies
|
||||
else:
|
||||
self.cookies = cookiejar_from_dict(cookies)
|
||||
|
||||
#: True if Request has been sent.
|
||||
self.sent = False
|
||||
|
||||
#: Event-handling hooks.
|
||||
self.hooks = {}
|
||||
|
||||
for event in HOOKS:
|
||||
self.hooks[event] = []
|
||||
|
||||
hooks = hooks or {}
|
||||
|
||||
for (k, v) in list(hooks.items()):
|
||||
self.register_hook(event=k, hook=v)
|
||||
|
||||
#: Session.
|
||||
self.session = session
|
||||
|
||||
#: SSL Verification.
|
||||
self.verify = verify
|
||||
|
||||
#: SSL Certificate
|
||||
self.cert = cert
|
||||
|
||||
#: Prefetch response content
|
||||
self.prefetch = prefetch
|
||||
|
||||
if headers:
|
||||
headers = CaseInsensitiveDict(self.headers)
|
||||
else:
|
||||
headers = CaseInsensitiveDict()
|
||||
|
||||
# Add configured base headers.
|
||||
for (k, v) in list(self.config.get('base_headers', {}).items()):
|
||||
if k not in headers:
|
||||
headers[k] = v
|
||||
|
||||
self.headers = headers
|
||||
self._poolmanager = _poolmanager
|
||||
|
||||
def __repr__(self):
|
||||
return '<Request [%s]>' % (self.method)
|
||||
|
||||
def _build_response(self, resp):
|
||||
"""Build internal :class:`Response <Response>` object
|
||||
from given response.
|
||||
"""
|
||||
|
||||
def build(resp):
|
||||
|
||||
response = Response()
|
||||
|
||||
# Pass settings over.
|
||||
response.config = self.config
|
||||
|
||||
if resp:
|
||||
|
||||
# Fallback to None if there's no status_code, for whatever reason.
|
||||
response.status_code = getattr(resp, 'status', None)
|
||||
|
||||
# Make headers case-insensitive.
|
||||
response.headers = CaseInsensitiveDict(getattr(resp, 'headers', None))
|
||||
|
||||
# Set encoding.
|
||||
response.encoding = get_encoding_from_headers(response.headers)
|
||||
|
||||
# Add new cookies from the server. Don't if configured not to
|
||||
if self.config.get('store_cookies'):
|
||||
extract_cookies_to_jar(self.cookies, self, resp)
|
||||
|
||||
# Save cookies in Response.
|
||||
response.cookies = self.cookies
|
||||
|
||||
# Save cookies in Session.
|
||||
for cookie in self.cookies:
|
||||
self.session.cookies.set_cookie(cookie)
|
||||
|
||||
# No exceptions were harmed in the making of this request.
|
||||
response.error = getattr(resp, 'error', None)
|
||||
|
||||
# Save original response for later.
|
||||
response.raw = resp
|
||||
if isinstance(self.full_url, bytes):
|
||||
response.url = self.full_url.decode('utf-8')
|
||||
else:
|
||||
response.url = self.full_url
|
||||
|
||||
return response
|
||||
|
||||
history = []
|
||||
|
||||
r = build(resp)
|
||||
|
||||
if r.status_code in REDIRECT_STATI and not self.redirect:
|
||||
|
||||
while (('location' in r.headers) and
|
||||
((r.status_code is codes.see_other) or (self.allow_redirects))):
|
||||
|
||||
r.content # Consume socket so it can be released
|
||||
|
||||
if not len(history) < self.config.get('max_redirects'):
|
||||
raise TooManyRedirects()
|
||||
|
||||
# Release the connection back into the pool.
|
||||
r.raw.release_conn()
|
||||
|
||||
history.append(r)
|
||||
|
||||
url = r.headers['location']
|
||||
data = self.data
|
||||
files = self.files
|
||||
|
||||
# Handle redirection without scheme (see: RFC 1808 Section 4)
|
||||
if url.startswith('//'):
|
||||
parsed_rurl = urlparse(r.url)
|
||||
url = '%s:%s' % (parsed_rurl.scheme, url)
|
||||
|
||||
# Facilitate non-RFC2616-compliant 'location' headers
|
||||
# (e.g. '/path/to/resource' instead of 'http://domain.tld/path/to/resource')
|
||||
if not urlparse(url).netloc:
|
||||
url = urljoin(r.url,
|
||||
# Compliant with RFC3986, we percent
|
||||
# encode the url.
|
||||
requote_uri(url))
|
||||
|
||||
# http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.3.4
|
||||
if r.status_code is codes.see_other:
|
||||
method = 'GET'
|
||||
data = None
|
||||
files = None
|
||||
else:
|
||||
method = self.method
|
||||
|
||||
# Do what the browsers do if strict_mode is off...
|
||||
if (not self.config.get('strict_mode')):
|
||||
|
||||
if r.status_code in (codes.moved, codes.found) and self.method == 'POST':
|
||||
method = 'GET'
|
||||
data = None
|
||||
files = None
|
||||
|
||||
if (r.status_code == 303) and self.method != 'HEAD':
|
||||
method = 'GET'
|
||||
data = None
|
||||
files = None
|
||||
|
||||
# Remove the cookie headers that were sent.
|
||||
headers = self.headers
|
||||
try:
|
||||
del headers['Cookie']
|
||||
except KeyError:
|
||||
pass
|
||||
|
||||
request = Request(
|
||||
url=url,
|
||||
headers=headers,
|
||||
files=files,
|
||||
method=method,
|
||||
params=self.session.params,
|
||||
auth=self.auth,
|
||||
cookies=self.cookies,
|
||||
redirect=True,
|
||||
data=data,
|
||||
config=self.config,
|
||||
timeout=self.timeout,
|
||||
_poolmanager=self._poolmanager,
|
||||
proxies=self.proxies,
|
||||
verify=self.verify,
|
||||
session=self.session,
|
||||
cert=self.cert,
|
||||
prefetch=self.prefetch,
|
||||
)
|
||||
|
||||
request.send()
|
||||
r = request.response
|
||||
|
||||
r.history = history
|
||||
|
||||
self.response = r
|
||||
self.response.request = self
|
||||
|
||||
@staticmethod
|
||||
def _encode_params(data):
|
||||
"""Encode parameters in a piece of data.
|
||||
|
||||
Will successfully encode parameters when passed as a dict or a list of
|
||||
2-tuples. Order is retained if data is a list of 2-tuples but abritrary
|
||||
if parameters are supplied as a dict.
|
||||
"""
|
||||
|
||||
if isinstance(data, (str, bytes)):
|
||||
return data
|
||||
elif hasattr(data, 'read'):
|
||||
return data
|
||||
elif hasattr(data, '__iter__'):
|
||||
result = []
|
||||
for k, vs in to_key_val_list(data):
|
||||
for v in isinstance(vs, list) and vs or [vs]:
|
||||
if v is not None:
|
||||
result.append(
|
||||
(k.encode('utf-8') if isinstance(k, str) else k,
|
||||
v.encode('utf-8') if isinstance(v, str) else v))
|
||||
return urlencode(result, doseq=True)
|
||||
else:
|
||||
return data
|
||||
|
||||
def _encode_files(self, files):
|
||||
"""Build the body for a multipart/form-data request.
|
||||
|
||||
Will successfully encode files when passed as a dict or a list of
|
||||
2-tuples. Order is retained if data is a list of 2-tuples but abritrary
|
||||
if parameters are supplied as a dict.
|
||||
|
||||
"""
|
||||
if (not files) or isinstance(self.data, str):
|
||||
return None
|
||||
|
||||
new_fields = []
|
||||
fields = to_key_val_list(self.data)
|
||||
files = to_key_val_list(files)
|
||||
|
||||
for field, val in fields:
|
||||
if isinstance(val, list):
|
||||
for v in val:
|
||||
new_fields.append((field, str(v)))
|
||||
else:
|
||||
new_fields.append((field, str(val)))
|
||||
|
||||
for (k, v) in files:
|
||||
# support for explicit filename
|
||||
if isinstance(v, (tuple, list)):
|
||||
fn, fp = v
|
||||
else:
|
||||
fn = guess_filename(v) or k
|
||||
fp = v
|
||||
if isinstance(fp, str):
|
||||
fp = StringIO(fp)
|
||||
if isinstance(fp, bytes):
|
||||
fp = BytesIO(fp)
|
||||
new_fields.append((k, (fn, fp.read())))
|
||||
|
||||
body, content_type = encode_multipart_formdata(new_fields)
|
||||
|
||||
return body, content_type
|
||||
|
||||
@property
|
||||
def full_url(self):
|
||||
"""Build the actual URL to use."""
|
||||
|
||||
if not self.url:
|
||||
raise URLRequired()
|
||||
|
||||
url = self.url
|
||||
|
||||
# Support for unicode domain names and paths.
|
||||
scheme, netloc, path, params, query, fragment = urlparse(url)
|
||||
|
||||
if not scheme:
|
||||
raise MissingSchema("Invalid URL %r: No schema supplied" % url)
|
||||
|
||||
if not scheme in SCHEMAS:
|
||||
raise InvalidSchema("Invalid scheme %r" % scheme)
|
||||
|
||||
try:
|
||||
netloc = netloc.encode('idna').decode('utf-8')
|
||||
except UnicodeError:
|
||||
raise InvalidURL('URL has an invalid label.')
|
||||
|
||||
if not path:
|
||||
path = '/'
|
||||
|
||||
if is_py2:
|
||||
if isinstance(scheme, str):
|
||||
scheme = scheme.encode('utf-8')
|
||||
if isinstance(netloc, str):
|
||||
netloc = netloc.encode('utf-8')
|
||||
if isinstance(path, str):
|
||||
path = path.encode('utf-8')
|
||||
if isinstance(params, str):
|
||||
params = params.encode('utf-8')
|
||||
if isinstance(query, str):
|
||||
query = query.encode('utf-8')
|
||||
if isinstance(fragment, str):
|
||||
fragment = fragment.encode('utf-8')
|
||||
|
||||
enc_params = self._encode_params(self.params)
|
||||
if enc_params:
|
||||
if query:
|
||||
query = '%s&%s' % (query, enc_params)
|
||||
else:
|
||||
query = enc_params
|
||||
|
||||
url = (urlunparse([scheme, netloc, path, params, query, fragment]))
|
||||
|
||||
if self.config.get('encode_uri', True):
|
||||
url = requote_uri(url)
|
||||
|
||||
return url
|
||||
|
||||
@property
|
||||
def path_url(self):
|
||||
"""Build the path URL to use."""
|
||||
|
||||
url = []
|
||||
|
||||
p = urlsplit(self.full_url)
|
||||
|
||||
# Proxies use full URLs.
|
||||
if p.scheme in self.proxies:
|
||||
return self.full_url
|
||||
|
||||
path = p.path
|
||||
if not path:
|
||||
path = '/'
|
||||
|
||||
url.append(path)
|
||||
|
||||
query = p.query
|
||||
if query:
|
||||
url.append('?')
|
||||
url.append(query)
|
||||
|
||||
return ''.join(url)
|
||||
|
||||
def register_hook(self, event, hook):
|
||||
"""Properly register a hook."""
|
||||
|
||||
self.hooks[event].append(hook)
|
||||
|
||||
def deregister_hook(self, event, hook):
|
||||
"""Deregister a previously registered hook.
|
||||
Returns True if the hook existed, False if not.
|
||||
"""
|
||||
|
||||
try:
|
||||
self.hooks[event].remove(hook)
|
||||
return True
|
||||
except ValueError:
|
||||
return False
|
||||
|
||||
def send(self, anyway=False, prefetch=None):
|
||||
"""Sends the request. Returns True if successful, False if not.
|
||||
If there was an HTTPError during transmission,
|
||||
self.response.status_code will contain the HTTPError code.
|
||||
|
||||
Once a request is successfully sent, `sent` will equal True.
|
||||
|
||||
:param anyway: If True, request will be sent, even if it has
|
||||
already been sent.
|
||||
|
||||
:param prefetch: If not None, will override the request's own setting
|
||||
for prefetch.
|
||||
"""
|
||||
|
||||
# Build the URL
|
||||
url = self.full_url
|
||||
|
||||
# Pre-request hook.
|
||||
r = dispatch_hook('pre_request', self.hooks, self)
|
||||
self.__dict__.update(r.__dict__)
|
||||
|
||||
# Logging
|
||||
if self.config.get('verbose'):
|
||||
self.config.get('verbose').write('%s %s %s\n' % (
|
||||
datetime.now().isoformat(), self.method, url
|
||||
))
|
||||
|
||||
# Nottin' on you.
|
||||
body = None
|
||||
content_type = None
|
||||
|
||||
# Multi-part file uploads.
|
||||
if self.files:
|
||||
(body, content_type) = self._encode_files(self.files)
|
||||
else:
|
||||
if self.data:
|
||||
|
||||
body = self._encode_params(self.data)
|
||||
if isinstance(self.data, str) or isinstance(self.data, builtin_str) or hasattr(self.data, 'read'):
|
||||
content_type = None
|
||||
else:
|
||||
content_type = 'application/x-www-form-urlencoded'
|
||||
|
||||
# Add content-type if it wasn't explicitly provided.
|
||||
if (content_type) and (not 'content-type' in self.headers):
|
||||
self.headers['Content-Type'] = content_type
|
||||
|
||||
# Use .netrc auth if none was provided.
|
||||
if not self.auth and self.config.get('trust_env'):
|
||||
self.auth = get_netrc_auth(url)
|
||||
|
||||
if self.auth:
|
||||
if isinstance(self.auth, tuple) and len(self.auth) == 2:
|
||||
# special-case basic HTTP auth
|
||||
self.auth = HTTPBasicAuth(*self.auth)
|
||||
|
||||
# Allow auth to make its changes.
|
||||
r = self.auth(self)
|
||||
|
||||
# Update self to reflect the auth changes.
|
||||
self.__dict__.update(r.__dict__)
|
||||
|
||||
_p = urlparse(url)
|
||||
no_proxy = filter(lambda x: x.strip(), self.proxies.get('no', '').split(','))
|
||||
proxy = self.proxies.get(_p.scheme)
|
||||
|
||||
if proxy and not any(map(_p.hostname.endswith, no_proxy)):
|
||||
conn = poolmanager.proxy_from_url(proxy)
|
||||
_proxy = urlparse(proxy)
|
||||
if '@' in _proxy.netloc:
|
||||
auth, url = _proxy.netloc.split('@', 1)
|
||||
self.proxy_auth = HTTPProxyAuth(*auth.split(':', 1))
|
||||
r = self.proxy_auth(self)
|
||||
self.__dict__.update(r.__dict__)
|
||||
else:
|
||||
# Check to see if keep_alive is allowed.
|
||||
try:
|
||||
if self.config.get('keep_alive'):
|
||||
conn = self._poolmanager.connection_from_url(url)
|
||||
else:
|
||||
conn = connectionpool.connection_from_url(url)
|
||||
self.headers['Connection'] = 'close'
|
||||
except LocationParseError as e:
|
||||
raise InvalidURL(e)
|
||||
|
||||
if url.startswith('https') and self.verify:
|
||||
|
||||
cert_loc = None
|
||||
|
||||
# Allow self-specified cert location.
|
||||
if self.verify is not True:
|
||||
cert_loc = self.verify
|
||||
|
||||
# Look for configuration.
|
||||
if not cert_loc and self.config.get('trust_env'):
|
||||
cert_loc = os.environ.get('REQUESTS_CA_BUNDLE')
|
||||
|
||||
# Curl compatibility.
|
||||
if not cert_loc and self.config.get('trust_env'):
|
||||
cert_loc = os.environ.get('CURL_CA_BUNDLE')
|
||||
|
||||
if not cert_loc:
|
||||
cert_loc = DEFAULT_CA_BUNDLE_PATH
|
||||
|
||||
if not cert_loc:
|
||||
raise Exception("Could not find a suitable SSL CA certificate bundle.")
|
||||
|
||||
conn.cert_reqs = 'CERT_REQUIRED'
|
||||
conn.ca_certs = cert_loc
|
||||
else:
|
||||
conn.cert_reqs = 'CERT_NONE'
|
||||
conn.ca_certs = None
|
||||
|
||||
if self.cert:
|
||||
if len(self.cert) == 2:
|
||||
conn.cert_file = self.cert[0]
|
||||
conn.key_file = self.cert[1]
|
||||
else:
|
||||
conn.cert_file = self.cert
|
||||
|
||||
if not self.sent or anyway:
|
||||
|
||||
# Skip if 'cookie' header is explicitly set.
|
||||
if 'cookie' not in self.headers:
|
||||
cookie_header = get_cookie_header(self.cookies, self)
|
||||
if cookie_header is not None:
|
||||
self.headers['Cookie'] = cookie_header
|
||||
|
||||
# Pre-send hook.
|
||||
r = dispatch_hook('pre_send', self.hooks, self)
|
||||
self.__dict__.update(r.__dict__)
|
||||
|
||||
# catch urllib3 exceptions and throw Requests exceptions
|
||||
try:
|
||||
# Send the request.
|
||||
r = conn.urlopen(
|
||||
method=self.method,
|
||||
url=self.path_url,
|
||||
body=body,
|
||||
headers=self.headers,
|
||||
redirect=False,
|
||||
assert_same_host=False,
|
||||
preload_content=False,
|
||||
decode_content=False,
|
||||
retries=self.config.get('max_retries', 0),
|
||||
timeout=self.timeout,
|
||||
)
|
||||
self.sent = True
|
||||
|
||||
except socket.error as sockerr:
|
||||
raise ConnectionError(sockerr)
|
||||
|
||||
except MaxRetryError as e:
|
||||
raise ConnectionError(e)
|
||||
|
||||
except (_SSLError, _HTTPError) as e:
|
||||
if isinstance(e, _SSLError):
|
||||
raise SSLError(e)
|
||||
elif isinstance(e, TimeoutError):
|
||||
raise Timeout(e)
|
||||
else:
|
||||
raise Timeout('Request timed out.')
|
||||
|
||||
# build_response can throw TooManyRedirects
|
||||
self._build_response(r)
|
||||
|
||||
# Response manipulation hook.
|
||||
self.response = dispatch_hook('response', self.hooks, self.response)
|
||||
|
||||
# Post-request hook.
|
||||
r = dispatch_hook('post_request', self.hooks, self)
|
||||
self.__dict__.update(r.__dict__)
|
||||
|
||||
# If prefetch is True, mark content as consumed.
|
||||
if prefetch is None:
|
||||
prefetch = self.prefetch
|
||||
if prefetch:
|
||||
# Save the response.
|
||||
self.response.content
|
||||
|
||||
if self.config.get('danger_mode'):
|
||||
self.response.raise_for_status()
|
||||
|
||||
return self.sent
|
||||
|
||||
|
||||
class Response(object):
|
||||
"""The core :class:`Response <Response>` object. All
|
||||
:class:`Request <Request>` objects contain a
|
||||
:class:`response <Response>` attribute, which is an instance
|
||||
of this class.
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
|
||||
self._content = False
|
||||
self._content_consumed = False
|
||||
|
||||
#: Integer Code of responded HTTP Status.
|
||||
self.status_code = None
|
||||
|
||||
#: Case-insensitive Dictionary of Response Headers.
|
||||
#: For example, ``headers['content-encoding']`` will return the
|
||||
#: value of a ``'Content-Encoding'`` response header.
|
||||
self.headers = CaseInsensitiveDict()
|
||||
|
||||
#: File-like object representation of response (for advanced usage).
|
||||
self.raw = None
|
||||
|
||||
#: Final URL location of Response.
|
||||
self.url = None
|
||||
|
||||
#: Resulting :class:`HTTPError` of request, if one occurred.
|
||||
self.error = None
|
||||
|
||||
#: Encoding to decode with when accessing r.text.
|
||||
self.encoding = None
|
||||
|
||||
#: A list of :class:`Response <Response>` objects from
|
||||
#: the history of the Request. Any redirect responses will end
|
||||
#: up here. The list is sorted from the oldest to the most recent request.
|
||||
self.history = []
|
||||
|
||||
#: The :class:`Request <Request>` that created the Response.
|
||||
self.request = None
|
||||
|
||||
#: A CookieJar of Cookies the server sent back.
|
||||
self.cookies = None
|
||||
|
||||
#: Dictionary of configurations for this request.
|
||||
self.config = {}
|
||||
|
||||
def __repr__(self):
|
||||
return '<Response [%s]>' % (self.status_code)
|
||||
|
||||
def __bool__(self):
|
||||
"""Returns true if :attr:`status_code` is 'OK'."""
|
||||
return self.ok
|
||||
|
||||
def __nonzero__(self):
|
||||
"""Returns true if :attr:`status_code` is 'OK'."""
|
||||
return self.ok
|
||||
|
||||
@property
|
||||
def ok(self):
|
||||
try:
|
||||
self.raise_for_status()
|
||||
except RequestException:
|
||||
return False
|
||||
return True
|
||||
|
||||
def iter_content(self, chunk_size=1, decode_unicode=False):
|
||||
"""Iterates over the response data. This avoids reading the content
|
||||
at once into memory for large responses. The chunk size is the number
|
||||
of bytes it should read into memory. This is not necessarily the
|
||||
length of each item returned as decoding can take place.
|
||||
"""
|
||||
if self._content_consumed:
|
||||
# simulate reading small chunks of the content
|
||||
return iter_slices(self._content, chunk_size)
|
||||
|
||||
def generate():
|
||||
while 1:
|
||||
chunk = self.raw.read(chunk_size)
|
||||
if not chunk:
|
||||
break
|
||||
yield chunk
|
||||
self._content_consumed = True
|
||||
|
||||
gen = stream_untransfer(generate(), self)
|
||||
|
||||
if decode_unicode:
|
||||
gen = stream_decode_response_unicode(gen, self)
|
||||
|
||||
return gen
|
||||
|
||||
def iter_lines(self, chunk_size=10 * 1024, decode_unicode=None):
|
||||
"""Iterates over the response data, one line at a time. This
|
||||
avoids reading the content at once into memory for large
|
||||
responses.
|
||||
"""
|
||||
|
||||
pending = None
|
||||
|
||||
for chunk in self.iter_content(
|
||||
chunk_size=chunk_size,
|
||||
decode_unicode=decode_unicode):
|
||||
|
||||
if pending is not None:
|
||||
chunk = pending + chunk
|
||||
lines = chunk.splitlines()
|
||||
|
||||
if lines and lines[-1] and chunk and lines[-1][-1] == chunk[-1]:
|
||||
pending = lines.pop()
|
||||
else:
|
||||
pending = None
|
||||
|
||||
for line in lines:
|
||||
yield line
|
||||
|
||||
if pending is not None:
|
||||
yield pending
|
||||
|
||||
@property
|
||||
def content(self):
|
||||
"""Content of the response, in bytes."""
|
||||
|
||||
if self._content is False:
|
||||
# Read the contents.
|
||||
try:
|
||||
if self._content_consumed:
|
||||
raise RuntimeError(
|
||||
'The content for this response was already consumed')
|
||||
|
||||
if self.status_code is 0:
|
||||
self._content = None
|
||||
else:
|
||||
self._content = bytes().join(self.iter_content(CONTENT_CHUNK_SIZE)) or bytes()
|
||||
|
||||
except AttributeError:
|
||||
self._content = None
|
||||
|
||||
self._content_consumed = True
|
||||
# don't need to release the connection; that's been handled by urllib3
|
||||
# since we exhausted the data.
|
||||
return self._content
|
||||
|
||||
@property
|
||||
def text(self):
|
||||
"""Content of the response, in unicode.
|
||||
|
||||
if Response.encoding is None and chardet module is available, encoding
|
||||
will be guessed.
|
||||
"""
|
||||
|
||||
# Try charset from content-type
|
||||
content = None
|
||||
encoding = self.encoding
|
||||
|
||||
if not self.content:
|
||||
return str('')
|
||||
|
||||
# Fallback to auto-detected encoding.
|
||||
if self.encoding is None:
|
||||
if chardet is not None:
|
||||
encoding = chardet.detect(self.content)['encoding']
|
||||
|
||||
# Decode unicode from given encoding.
|
||||
try:
|
||||
content = str(self.content, encoding, errors='replace')
|
||||
except LookupError:
|
||||
# A LookupError is raised if the encoding was not found which could
|
||||
# indicate a misspelling or similar mistake.
|
||||
#
|
||||
# So we try blindly encoding.
|
||||
content = str(self.content, errors='replace')
|
||||
|
||||
return content
|
||||
|
||||
@property
|
||||
def json(self):
|
||||
"""Returns the json-encoded content of a response, if any."""
|
||||
try:
|
||||
return json.loads(self.text or self.content)
|
||||
except ValueError:
|
||||
return None
|
||||
|
||||
@property
|
||||
def links(self):
|
||||
"""Returns the parsed header links of the response, if any."""
|
||||
|
||||
header = self.headers['link']
|
||||
|
||||
# l = MultiDict()
|
||||
l = {}
|
||||
|
||||
if header:
|
||||
links = parse_header_links(header)
|
||||
|
||||
for link in links:
|
||||
key = link.get('rel') or link.get('url')
|
||||
l[key] = link
|
||||
|
||||
return l
|
||||
|
||||
@property
|
||||
def reason(self):
|
||||
"""The HTTP Reason for the response."""
|
||||
return self.raw.reason
|
||||
|
||||
def raise_for_status(self, allow_redirects=True):
|
||||
"""Raises stored :class:`HTTPError` or :class:`URLError`, if one occurred."""
|
||||
|
||||
if self.error:
|
||||
raise self.error
|
||||
|
||||
http_error_msg = ''
|
||||
if 300 <= self.status_code < 400 and not allow_redirects:
|
||||
http_error_msg = '%s Redirection: %s' % (self.status_code, self.reason)
|
||||
|
||||
elif 400 <= self.status_code < 500:
|
||||
http_error_msg = '%s Client Error: %s' % (self.status_code, self.reason)
|
||||
|
||||
elif 500 <= self.status_code < 600:
|
||||
http_error_msg = '%s Server Error: %s' % (self.status_code, self.reason)
|
||||
|
||||
if http_error_msg:
|
||||
http_error = HTTPError(http_error_msg)
|
||||
http_error.response = self
|
||||
raise http_error
|
||||
Reference in New Issue
Block a user