723 lines
23 KiB
Python
723 lines
23 KiB
Python
|
# -*- coding: utf-8 -*-
|
||
|
|
|
||
|
|
"""
|
||
|
|
requests.models
|
||
|
|
~~~~~~~~~~~~~~~
|
||
|
|
|
||
|
|
This module contains the primary objects that power Requests.
|
||
|
|
"""
|
||
|
|
|
||
|
|
import collections
|
||
|
|
import logging
|
||
|
|
import datetime
|
||
|
|
|
||
|
|
from io import BytesIO
|
||
|
|
from .hooks import default_hooks
|
||
|
|
from .structures import CaseInsensitiveDict
|
||
|
|
|
||
|
|
from .auth import HTTPBasicAuth
|
||
|
|
from .cookies import cookiejar_from_dict, get_cookie_header
|
||
|
|
from .packages.urllib3.filepost import encode_multipart_formdata
|
||
|
|
from .packages.urllib3.util import parse_url
|
||
|
|
from .exceptions import (
|
||
|
|
HTTPError, RequestException, MissingSchema, InvalidURL,
|
||
|
|
ChunkedEncodingError)
|
||
|
|
from .utils import (
|
||
|
|
guess_filename, get_auth_from_url, requote_uri,
|
||
|
|
stream_decode_response_unicode, to_key_val_list, parse_header_links,
|
||
|
|
iter_slices, guess_json_utf, super_len)
|
||
|
|
from .compat import (
|
||
|
|
cookielib, urlunparse, urlsplit, urlencode, str, bytes, StringIO,
|
||
|
|
is_py2, chardet, json, builtin_str, basestring, IncompleteRead)
|
||
|
|
|
||
|
|
CONTENT_CHUNK_SIZE = 10 * 1024
|
||
|
|
ITER_CHUNK_SIZE = 512
|
||
|
|
|
||
|
|
log = logging.getLogger(__name__)
|
||
|
|
|
||
|
|
|
||
|
|
class RequestEncodingMixin(object):
|
||
|
|
@property
|
||
|
|
def path_url(self):
|
||
|
|
"""Build the path URL to use."""
|
||
|
|
|
||
|
|
url = []
|
||
|
|
|
||
|
|
p = urlsplit(self.url)
|
||
|
|
|
||
|
|
path = p.path
|
||
|
|
if not path:
|
||
|
|
path = '/'
|
||
|
|
|
||
|
|
url.append(path)
|
||
|
|
|
||
|
|
query = p.query
|
||
|
|
if query:
|
||
|
|
url.append('?')
|
||
|
|
url.append(query)
|
||
|
|
|
||
|
|
return ''.join(url)
|
||
|
|
|
||
|
|
@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 arbitrary
|
||
|
|
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):
|
||
|
|
if isinstance(vs, basestring) or not hasattr(vs, '__iter__'):
|
||
|
|
vs = [vs]
|
||
|
|
for v in 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
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def _encode_files(files, data):
|
||
|
|
"""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(data, str):
|
||
|
|
return None
|
||
|
|
|
||
|
|
new_fields = []
|
||
|
|
fields = to_key_val_list(data or {})
|
||
|
|
files = to_key_val_list(files or {})
|
||
|
|
|
||
|
|
for field, val in fields:
|
||
|
|
if isinstance(val, basestring) or not hasattr(val, '__iter__'):
|
||
|
|
val = [val]
|
||
|
|
for v in val:
|
||
|
|
if v is not None:
|
||
|
|
new_fields.append(
|
||
|
|
(field.decode('utf-8') if isinstance(field, bytes) else field,
|
||
|
|
v.encode('utf-8') if isinstance(v, str) else v))
|
||
|
|
|
||
|
|
for (k, v) in files:
|
||
|
|
# support for explicit filename
|
||
|
|
ft = None
|
||
|
|
if isinstance(v, (tuple, list)):
|
||
|
|
if len(v) == 2:
|
||
|
|
fn, fp = v
|
||
|
|
else:
|
||
|
|
fn, fp, ft = v
|
||
|
|
else:
|
||
|
|
fn = guess_filename(v) or k
|
||
|
|
fp = v
|
||
|
|
if isinstance(fp, str):
|
||
|
|
fp = StringIO(fp)
|
||
|
|
if isinstance(fp, bytes):
|
||
|
|
fp = BytesIO(fp)
|
||
|
|
|
||
|
|
if ft:
|
||
|
|
new_v = (fn, fp.read(), ft)
|
||
|
|
else:
|
||
|
|
new_v = (fn, fp.read())
|
||
|
|
new_fields.append((k, new_v))
|
||
|
|
|
||
|
|
body, content_type = encode_multipart_formdata(new_fields)
|
||
|
|
|
||
|
|
return body, content_type
|
||
|
|
|
||
|
|
|
||
|
|
class RequestHooksMixin(object):
|
||
|
|
def register_hook(self, event, hook):
|
||
|
|
"""Properly register a hook."""
|
||
|
|
|
||
|
|
if isinstance(hook, collections.Callable):
|
||
|
|
self.hooks[event].append(hook)
|
||
|
|
elif hasattr(hook, '__iter__'):
|
||
|
|
self.hooks[event].extend(h for h in hook if isinstance(h, collections.Callable))
|
||
|
|
|
||
|
|
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
|
||
|
|
|
||
|
|
|
||
|
|
class Request(RequestHooksMixin):
|
||
|
|
"""A user-created :class:`Request <Request>` object.
|
||
|
|
|
||
|
|
Used to prepare a :class:`PreparedRequest <PreparedRequest>`, which is sent to the server.
|
||
|
|
|
||
|
|
:param method: HTTP method to use.
|
||
|
|
:param url: URL to send.
|
||
|
|
:param headers: dictionary of headers to send.
|
||
|
|
:param files: dictionary of {filename: fileobject} files to multipart upload.
|
||
|
|
:param data: the body to attach the request. If a dictionary is provided, form-encoding will take place.
|
||
|
|
:param params: dictionary of URL parameters to append to the URL.
|
||
|
|
:param auth: Auth handler or (user, pass) tuple.
|
||
|
|
:param cookies: dictionary or CookieJar of cookies to attach to this request.
|
||
|
|
:param hooks: dictionary of callback hooks, for internal usage.
|
||
|
|
|
||
|
|
Usage::
|
||
|
|
|
||
|
|
>>> import requests
|
||
|
|
>>> req = requests.Request('GET', 'http://httpbin.org/get')
|
||
|
|
>>> req.prepare()
|
||
|
|
<PreparedRequest [GET]>
|
||
|
|
|
||
|
|
"""
|
||
|
|
def __init__(self,
|
||
|
|
method=None,
|
||
|
|
url=None,
|
||
|
|
headers=None,
|
||
|
|
files=None,
|
||
|
|
data=dict(),
|
||
|
|
params=dict(),
|
||
|
|
auth=None,
|
||
|
|
cookies=None,
|
||
|
|
hooks=None):
|
||
|
|
|
||
|
|
# Default empty dicts for dict params.
|
||
|
|
data = [] if data is None else data
|
||
|
|
files = [] if files is None else files
|
||
|
|
headers = {} if headers is None else headers
|
||
|
|
params = {} if params is None else params
|
||
|
|
hooks = {} if hooks is None else hooks
|
||
|
|
|
||
|
|
self.hooks = default_hooks()
|
||
|
|
for (k, v) in list(hooks.items()):
|
||
|
|
self.register_hook(event=k, hook=v)
|
||
|
|
|
||
|
|
self.method = method
|
||
|
|
self.url = url
|
||
|
|
self.headers = headers
|
||
|
|
self.files = files
|
||
|
|
self.data = data
|
||
|
|
self.params = params
|
||
|
|
self.auth = auth
|
||
|
|
self.cookies = cookies
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return '<Request [%s]>' % (self.method)
|
||
|
|
|
||
|
|
def prepare(self):
|
||
|
|
"""Constructs a :class:`PreparedRequest <PreparedRequest>` for transmission and returns it."""
|
||
|
|
p = PreparedRequest()
|
||
|
|
p.prepare(
|
||
|
|
method=self.method,
|
||
|
|
url=self.url,
|
||
|
|
headers=self.headers,
|
||
|
|
files=self.files,
|
||
|
|
data=self.data,
|
||
|
|
params=self.params,
|
||
|
|
auth=self.auth,
|
||
|
|
cookies=self.cookies,
|
||
|
|
hooks=self.hooks,
|
||
|
|
)
|
||
|
|
return p
|
||
|
|
|
||
|
|
|
||
|
|
class PreparedRequest(RequestEncodingMixin, RequestHooksMixin):
|
||
|
|
"""The fully mutable :class:`PreparedRequest <PreparedRequest>` object,
|
||
|
|
containing the exact bytes that will be sent to the server.
|
||
|
|
|
||
|
|
Generated from either a :class:`Request <Request>` object or manually.
|
||
|
|
|
||
|
|
Usage::
|
||
|
|
|
||
|
|
>>> import requests
|
||
|
|
>>> req = requests.Request('GET', 'http://httpbin.org/get')
|
||
|
|
>>> r = req.prepare()
|
||
|
|
<PreparedRequest [GET]>
|
||
|
|
|
||
|
|
>>> s = requests.Session()
|
||
|
|
>>> s.send(r)
|
||
|
|
<Response [200]>
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self):
|
||
|
|
#: HTTP verb to send to the server.
|
||
|
|
self.method = None
|
||
|
|
#: HTTP URL to send the request to.
|
||
|
|
self.url = None
|
||
|
|
#: dictionary of HTTP headers.
|
||
|
|
self.headers = None
|
||
|
|
#: request body to send to the server.
|
||
|
|
self.body = None
|
||
|
|
#: dictionary of callback hooks, for internal usage.
|
||
|
|
self.hooks = default_hooks()
|
||
|
|
|
||
|
|
def prepare(self, method=None, url=None, headers=None, files=None,
|
||
|
|
data=None, params=None, auth=None, cookies=None, hooks=None):
|
||
|
|
"""Prepares the the entire request with the given parameters."""
|
||
|
|
|
||
|
|
self.prepare_method(method)
|
||
|
|
self.prepare_url(url, params)
|
||
|
|
self.prepare_headers(headers)
|
||
|
|
self.prepare_cookies(cookies)
|
||
|
|
self.prepare_body(data, files)
|
||
|
|
self.prepare_auth(auth, url)
|
||
|
|
# Note that prepare_auth must be last to enable authentication schemes
|
||
|
|
# such as OAuth to work on a fully prepared request.
|
||
|
|
|
||
|
|
# This MUST go after prepare_auth. Authenticators could add a hook
|
||
|
|
self.prepare_hooks(hooks)
|
||
|
|
|
||
|
|
def __repr__(self):
|
||
|
|
return '<PreparedRequest [%s]>' % (self.method)
|
||
|
|
|
||
|
|
def copy(self):
|
||
|
|
p = PreparedRequest()
|
||
|
|
p.method = self.method
|
||
|
|
p.url = self.url
|
||
|
|
p.headers = self.headers
|
||
|
|
p.body = self.body
|
||
|
|
p.hooks = self.hooks
|
||
|
|
return p
|
||
|
|
|
||
|
|
def prepare_method(self, method):
|
||
|
|
"""Prepares the given HTTP method."""
|
||
|
|
self.method = method
|
||
|
|
if self.method is not None:
|
||
|
|
self.method = self.method.upper()
|
||
|
|
|
||
|
|
def prepare_url(self, url, params):
|
||
|
|
"""Prepares the given HTTP URL."""
|
||
|
|
#: Accept objects that have string representations.
|
||
|
|
try:
|
||
|
|
url = unicode(url)
|
||
|
|
except NameError:
|
||
|
|
# We're on Python 3.
|
||
|
|
url = str(url)
|
||
|
|
except UnicodeDecodeError:
|
||
|
|
pass
|
||
|
|
|
||
|
|
# Support for unicode domain names and paths.
|
||
|
|
scheme, auth, host, port, path, query, fragment = parse_url(url)
|
||
|
|
|
||
|
|
if not scheme:
|
||
|
|
raise MissingSchema("Invalid URL %r: No schema supplied" % url)
|
||
|
|
|
||
|
|
if not host:
|
||
|
|
raise InvalidURL("Invalid URL %r: No host supplied" % url)
|
||
|
|
|
||
|
|
# Only want to apply IDNA to the hostname
|
||
|
|
try:
|
||
|
|
host = host.encode('idna').decode('utf-8')
|
||
|
|
except UnicodeError:
|
||
|
|
raise InvalidURL('URL has an invalid label.')
|
||
|
|
|
||
|
|
# Carefully reconstruct the network location
|
||
|
|
netloc = auth or ''
|
||
|
|
if netloc:
|
||
|
|
netloc += '@'
|
||
|
|
netloc += host
|
||
|
|
if port:
|
||
|
|
netloc += ':' + str(port)
|
||
|
|
|
||
|
|
# Bare domains aren't valid URLs.
|
||
|
|
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(query, str):
|
||
|
|
query = query.encode('utf-8')
|
||
|
|
if isinstance(fragment, str):
|
||
|
|
fragment = fragment.encode('utf-8')
|
||
|
|
|
||
|
|
enc_params = self._encode_params(params)
|
||
|
|
if enc_params:
|
||
|
|
if query:
|
||
|
|
query = '%s&%s' % (query, enc_params)
|
||
|
|
else:
|
||
|
|
query = enc_params
|
||
|
|
|
||
|
|
url = requote_uri(urlunparse([scheme, netloc, path, None, query, fragment]))
|
||
|
|
self.url = url
|
||
|
|
|
||
|
|
def prepare_headers(self, headers):
|
||
|
|
"""Prepares the given HTTP headers."""
|
||
|
|
|
||
|
|
if headers:
|
||
|
|
headers = dict((name.encode('ascii'), value) for name, value in headers.items())
|
||
|
|
self.headers = CaseInsensitiveDict(headers)
|
||
|
|
else:
|
||
|
|
self.headers = CaseInsensitiveDict()
|
||
|
|
|
||
|
|
def prepare_body(self, data, files):
|
||
|
|
"""Prepares the given HTTP body data."""
|
||
|
|
|
||
|
|
# Check if file, fo, generator, iterator.
|
||
|
|
# If not, run through normal process.
|
||
|
|
|
||
|
|
# Nottin' on you.
|
||
|
|
body = None
|
||
|
|
content_type = None
|
||
|
|
length = None
|
||
|
|
|
||
|
|
is_stream = all([
|
||
|
|
hasattr(data, '__iter__'),
|
||
|
|
not isinstance(data, basestring),
|
||
|
|
not isinstance(data, list),
|
||
|
|
not isinstance(data, dict)
|
||
|
|
])
|
||
|
|
|
||
|
|
try:
|
||
|
|
length = super_len(data)
|
||
|
|
except (TypeError, AttributeError):
|
||
|
|
length = None
|
||
|
|
|
||
|
|
if is_stream:
|
||
|
|
body = data
|
||
|
|
|
||
|
|
if files:
|
||
|
|
raise NotImplementedError('Streamed bodies and files are mutually exclusive.')
|
||
|
|
|
||
|
|
if length is not None:
|
||
|
|
self.headers['Content-Length'] = str(length)
|
||
|
|
else:
|
||
|
|
self.headers['Transfer-Encoding'] = 'chunked'
|
||
|
|
else:
|
||
|
|
# Multi-part file uploads.
|
||
|
|
if files:
|
||
|
|
(body, content_type) = self._encode_files(files, data)
|
||
|
|
else:
|
||
|
|
if data:
|
||
|
|
body = self._encode_params(data)
|
||
|
|
if isinstance(data, str) or isinstance(data, builtin_str) or hasattr(data, 'read'):
|
||
|
|
content_type = None
|
||
|
|
else:
|
||
|
|
content_type = 'application/x-www-form-urlencoded'
|
||
|
|
|
||
|
|
self.prepare_content_length(body)
|
||
|
|
|
||
|
|
# 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
|
||
|
|
|
||
|
|
self.body = body
|
||
|
|
|
||
|
|
def prepare_content_length(self, body):
|
||
|
|
if hasattr(body, 'seek') and hasattr(body, 'tell'):
|
||
|
|
body.seek(0, 2)
|
||
|
|
self.headers['Content-Length'] = str(body.tell())
|
||
|
|
body.seek(0, 0)
|
||
|
|
elif body is not None:
|
||
|
|
l = super_len(body)
|
||
|
|
if l:
|
||
|
|
self.headers['Content-Length'] = str(l)
|
||
|
|
elif self.method not in ('GET', 'HEAD'):
|
||
|
|
self.headers['Content-Length'] = '0'
|
||
|
|
|
||
|
|
def prepare_auth(self, auth, url=''):
|
||
|
|
"""Prepares the given HTTP auth data."""
|
||
|
|
|
||
|
|
# If no Auth is explicitly provided, extract it from the URL first.
|
||
|
|
if auth is None:
|
||
|
|
url_auth = get_auth_from_url(self.url)
|
||
|
|
auth = url_auth if any(url_auth) else None
|
||
|
|
|
||
|
|
if auth:
|
||
|
|
if isinstance(auth, tuple) and len(auth) == 2:
|
||
|
|
# special-case basic HTTP auth
|
||
|
|
auth = HTTPBasicAuth(*auth)
|
||
|
|
|
||
|
|
# Allow auth to make its changes.
|
||
|
|
r = auth(self)
|
||
|
|
|
||
|
|
# Update self to reflect the auth changes.
|
||
|
|
self.__dict__.update(r.__dict__)
|
||
|
|
|
||
|
|
# Recompute Content-Length
|
||
|
|
self.prepare_content_length(self.body)
|
||
|
|
|
||
|
|
def prepare_cookies(self, cookies):
|
||
|
|
"""Prepares the given HTTP cookie data."""
|
||
|
|
|
||
|
|
if isinstance(cookies, cookielib.CookieJar):
|
||
|
|
cookies = cookies
|
||
|
|
else:
|
||
|
|
cookies = cookiejar_from_dict(cookies)
|
||
|
|
|
||
|
|
if 'cookie' not in self.headers:
|
||
|
|
cookie_header = get_cookie_header(cookies, self)
|
||
|
|
if cookie_header is not None:
|
||
|
|
self.headers['Cookie'] = cookie_header
|
||
|
|
|
||
|
|
def prepare_hooks(self, hooks):
|
||
|
|
"""Prepares the given hooks."""
|
||
|
|
for event in hooks:
|
||
|
|
self.register_hook(event, hooks[event])
|
||
|
|
|
||
|
|
|
||
|
|
class Response(object):
|
||
|
|
"""The :class:`Response <Response>` object, which contains a
|
||
|
|
server's response to an HTTP request.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self):
|
||
|
|
super(Response, self).__init__()
|
||
|
|
|
||
|
|
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).
|
||
|
|
#: Requires that ``stream=True` on the request.
|
||
|
|
# This requirement does not apply for use internally to Requests.
|
||
|
|
self.raw = None
|
||
|
|
|
||
|
|
#: Final URL location of Response.
|
||
|
|
self.url = 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 = []
|
||
|
|
|
||
|
|
self.reason = None
|
||
|
|
|
||
|
|
#: A CookieJar of Cookies the server sent back.
|
||
|
|
self.cookies = cookiejar_from_dict({})
|
||
|
|
|
||
|
|
#: The amount of time elapsed between sending the request
|
||
|
|
#: and the arrival of the response (as a timedelta)
|
||
|
|
self.elapsed = datetime.timedelta(0)
|
||
|
|
|
||
|
|
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
|
||
|
|
|
||
|
|
def __iter__(self):
|
||
|
|
"""Allows you to use a response as an iterator."""
|
||
|
|
return self.iter_content(128)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def ok(self):
|
||
|
|
try:
|
||
|
|
self.raise_for_status()
|
||
|
|
except RequestException:
|
||
|
|
return False
|
||
|
|
return True
|
||
|
|
|
||
|
|
@property
|
||
|
|
def apparent_encoding(self):
|
||
|
|
"""The apparent encoding, provided by the lovely Charade library
|
||
|
|
(Thanks, Ian!)."""
|
||
|
|
return chardet.detect(self.content)['encoding']
|
||
|
|
|
||
|
|
def iter_content(self, chunk_size=1, decode_unicode=False):
|
||
|
|
"""Iterates over the response data. When stream=True is set on the
|
||
|
|
request, 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():
|
||
|
|
try:
|
||
|
|
# Special case for urllib3.
|
||
|
|
try:
|
||
|
|
for chunk in self.raw.stream(chunk_size,
|
||
|
|
decode_content=True):
|
||
|
|
yield chunk
|
||
|
|
except IncompleteRead as e:
|
||
|
|
raise ChunkedEncodingError(e)
|
||
|
|
except AttributeError:
|
||
|
|
# Standard file-like object.
|
||
|
|
while 1:
|
||
|
|
chunk = self.raw.read(chunk_size)
|
||
|
|
if not chunk:
|
||
|
|
break
|
||
|
|
yield chunk
|
||
|
|
|
||
|
|
self._content_consumed = True
|
||
|
|
|
||
|
|
gen = generate()
|
||
|
|
|
||
|
|
if decode_unicode:
|
||
|
|
gen = stream_decode_response_unicode(gen, self)
|
||
|
|
|
||
|
|
return gen
|
||
|
|
|
||
|
|
def iter_lines(self, chunk_size=ITER_CHUNK_SIZE, decode_unicode=None):
|
||
|
|
"""Iterates over the response data, one line at a time. When
|
||
|
|
stream=True is set on the request, 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 == 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:
|
||
|
|
encoding = self.apparent_encoding
|
||
|
|
|
||
|
|
# Decode unicode from given encoding.
|
||
|
|
try:
|
||
|
|
content = str(self.content, encoding, errors='replace')
|
||
|
|
except (LookupError, TypeError):
|
||
|
|
# A LookupError is raised if the encoding was not found which could
|
||
|
|
# indicate a misspelling or similar mistake.
|
||
|
|
#
|
||
|
|
# A TypeError can be raised if encoding is None
|
||
|
|
#
|
||
|
|
# So we try blindly encoding.
|
||
|
|
content = str(self.content, errors='replace')
|
||
|
|
|
||
|
|
return content
|
||
|
|
|
||
|
|
def json(self, **kwargs):
|
||
|
|
"""Returns the json-encoded content of a response, if any.
|
||
|
|
|
||
|
|
:param \*\*kwargs: Optional arguments that ``json.loads`` takes.
|
||
|
|
"""
|
||
|
|
|
||
|
|
if not self.encoding and len(self.content) > 3:
|
||
|
|
# No encoding set. JSON RFC 4627 section 3 states we should expect
|
||
|
|
# UTF-8, -16 or -32. Detect which one to use; If the detection or
|
||
|
|
# decoding fails, fall back to `self.text` (using chardet to make
|
||
|
|
# a best guess).
|
||
|
|
encoding = guess_json_utf(self.content)
|
||
|
|
if encoding is not None:
|
||
|
|
return json.loads(self.content.decode(encoding), **kwargs)
|
||
|
|
return json.loads(self.text or self.content, **kwargs)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def links(self):
|
||
|
|
"""Returns the parsed header links of the response, if any."""
|
||
|
|
|
||
|
|
header = self.headers.get('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
|
||
|
|
|
||
|
|
def raise_for_status(self):
|
||
|
|
"""Raises stored :class:`HTTPError`, if one occurred."""
|
||
|
|
|
||
|
|
http_error_msg = ''
|
||
|
|
|
||
|
|
if 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:
|
||
|
|
raise HTTPError(http_error_msg, response=self)
|
||
|
|
|
||
|
|
def close(self):
|
||
|
|
"""Closes the underlying file descriptor and releases the connection
|
||
|
|
back to the pool.
|
||
|
|
|
||
|
|
*Note: Should not normally need to be called explicitly.*
|
||
|
|
"""
|
||
|
|
return self.raw.release_conn()
|