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/lib/python3.6/site-packages/pip/_vendor/urllib3/
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__pycache__ dir drwxr-xr-x 2024-11-03 22:12 R D
contrib dir drwxr-xr-x 2024-11-03 22:12 R D
packages dir drwxr-xr-x 2024-11-03 22:12 R D
util dir drwxr-xr-x 2024-11-03 22:12 R D
  __init__.py 2.786 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  _collections.py 9.965 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  connection.py 12.698 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  connectionpool.py 34.529 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  exceptions.py 6.448 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  fields.py 5.804 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  filepost.py 2.267 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  poolmanager.py 16.426 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  request.py 5.807 KB -rw-r--r-- 2024-10-17 13:12 R E G D
  response.py 22.366 KB -rw-r--r-- 2024-10-17 13:12 R E G D
REQUEST EXIT
from __future__ import absolute_import import errno import logging import sys import warnings from socket import error as SocketError, timeout as SocketTimeout import socket from .exceptions import ( ClosedPoolError, ProtocolError, EmptyPoolError, HeaderParsingError, HostChangedError, LocationValueError, MaxRetryError, ProxyError, ReadTimeoutError, SSLError, TimeoutError, InsecureRequestWarning, NewConnectionError, ) from .packages.ssl_match_hostname import CertificateError from .packages import six from .packages.six.moves import queue from .connection import ( port_by_scheme, DummyConnection, HTTPConnection, HTTPSConnection, VerifiedHTTPSConnection, HTTPException, BaseSSLError, ) from .request import RequestMethods from .response import HTTPResponse from .util.connection import is_connection_dropped from .util.request import set_file_position from .util.response import assert_header_parsing from .util.retry import Retry from .util.timeout import Timeout from .util.url import get_host, Url if six.PY2: # Queue is imported for side effects on MS Windows import Queue as _unused_module_Queue # noqa: F401 xrange = six.moves.xrange log = logging.getLogger(__name__) _Default = object() # Pool objects class ConnectionPool(object): """ Base class for all connection pools, such as :class:`.HTTPConnectionPool` and :class:`.HTTPSConnectionPool`. """ scheme = None QueueCls = queue.LifoQueue def __init__(self, host, port=None): if not host: raise LocationValueError("No host specified.") self.host = _ipv6_host(host).lower() self._proxy_host = host.lower() self.port = port def __str__(self): return '%s(host=%r, port=%r)' % (type(self).__name__, self.host, self.port) def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.close() # Return False to re-raise any potential exceptions return False def close(self): """ Close all pooled connections and disable the pool. """ pass # This is taken from http://hg.python.org/cpython/file/7aaba721ebc0/Lib/socket.py#l252 _blocking_errnos = set([errno.EAGAIN, errno.EWOULDBLOCK]) class HTTPConnectionPool(ConnectionPool, RequestMethods): """ Thread-safe connection pool for one host. :param host: Host used for this HTTP Connection (e.g. "localhost"), passed into :class:`httplib.HTTPConnection`. :param port: Port used for this HTTP Connection (None is equivalent to 80), passed into :class:`httplib.HTTPConnection`. :param strict: Causes BadStatusLine to be raised if the status line can't be parsed as a valid HTTP/1.0 or 1.1 status line, passed into :class:`httplib.HTTPConnection`. .. note:: Only works in Python 2. This parameter is ignored in Python 3. :param timeout: Socket timeout in seconds for each individual connection. This can be a float or integer, which sets the timeout for the HTTP request, or an instance of :class:`urllib3.util.Timeout` which gives you more fine-grained control over request timeouts. After the constructor has been parsed, this is always a `urllib3.util.Timeout` object. :param maxsize: Number of connections to save that can be reused. More than 1 is useful in multithreaded situations. If ``block`` is set to False, more connections will be created but they will not be saved once they've been used. :param block: If set to True, no more than ``maxsize`` connections will be used at a time. When no free connections are available, the call will block until a connection has been released. This is a useful side effect for particular multithreaded situations where one does not want to use more than maxsize connections per host to prevent flooding. :param headers: Headers to include with all requests, unless other headers are given explicitly. :param retries: Retry configuration to use by default with requests in this pool. :param _proxy: Parsed proxy URL, should not be used directly, instead, see :class:`urllib3.connectionpool.ProxyManager`" :param _proxy_headers: A dictionary with proxy headers, should not be used directly, instead, see :class:`urllib3.connectionpool.ProxyManager`" :param \\**conn_kw: Additional parameters are used to create fresh :class:`urllib3.connection.HTTPConnection`, :class:`urllib3.connection.HTTPSConnection` instances. """ scheme = 'http' ConnectionCls = HTTPConnection ResponseCls = HTTPResponse def __init__(self, host, port=None, strict=False, timeout=Timeout.DEFAULT_TIMEOUT, maxsize=1, block=False, headers=None, retries=None, _proxy=None, _proxy_headers=None, **conn_kw): ConnectionPool.__init__(self, host, port) RequestMethods.__init__(self, headers) self.strict = strict if not isinstance(timeout, Timeout): timeout = Timeout.from_float(timeout) if retries is None: retries = Retry.DEFAULT self.timeout = timeout self.retries = retries self.pool = self.QueueCls(maxsize) self.block = block self.proxy = _proxy self.proxy_headers = _proxy_headers or {} # Fill the queue up so that doing get() on it will block properly for _ in xrange(maxsize): self.pool.put(None) # These are mostly for testing and debugging purposes. self.num_connections = 0 self.num_requests = 0 self.conn_kw = conn_kw if self.proxy: # Enable Nagle's algorithm for proxies, to avoid packet fragmentation. # We cannot know if the user has added default socket options, so we cannot replace the # list. self.conn_kw.setdefault('socket_options', []) def _new_conn(self): """ Return a fresh :class:`HTTPConnection`. """ self.num_connections += 1 log.debug("Starting new HTTP connection (%d): %s", self.num_connections, self.host) conn = self.ConnectionCls(host=self.host, port=self.port, timeout=self.timeout.connect_timeout, strict=self.strict, **self.conn_kw) return conn def _get_conn(self, timeout=None): """ Get a connection. Will return a pooled connection if one is available. If no connections are available and :prop:`.block` is ``False``, then a fresh connection is returned. :param timeout: Seconds to wait before giving up and raising :class:`urllib3.exceptions.EmptyPoolError` if the pool is empty and :prop:`.block` is ``True``. """ conn = None try: conn = self.pool.get(block=self.block, timeout=timeout) except AttributeError: # self.pool is None raise ClosedPoolError(self, "Pool is closed.") except queue.Empty: if self.block: raise EmptyPoolError(self, "Pool reached maximum size and no more " "connections are allowed.") pass # Oh well, we'll create a new connection then # If this is a persistent connection, check if it got disconnected if conn and is_connection_dropped(conn): log.debug("Resetting dropped connection: %s", self.host) conn.close() if getattr(conn, 'auto_open', 1) == 0: # This is a proxied connection that has been mutated by # httplib._tunnel() and cannot be reused (since it would # attempt to bypass the proxy) conn = None return conn or self._new_conn() def _put_conn(self, conn): """ Put a connection back into the pool. :param conn: Connection object for the current host and port as returned by :meth:`._new_conn` or :meth:`._get_conn`. If the pool is already full, the connection is closed and discarded because we exceeded maxsize. If connections are discarded frequently, then maxsize should be increased. If the pool is closed, then the connection will be closed and discarded. """ try: self.pool.put(conn, block=False) return # Everything is dandy, done. except AttributeError: # self.pool is None. pass except queue.Full: # This should never happen if self.block == True log.warning( "Connection pool is full, discarding connection: %s", self.host) # Connection never got put back into the pool, close it. if conn: conn.close() def _validate_conn(self, conn): """ Called right before a request is made, after the socket is created. """ pass def _prepare_proxy(self, conn): # Nothing to do for HTTP connections. pass def _get_timeout(self, timeout): """ Helper that always returns a :class:`urllib3.util.Timeout` """ if timeout is _Default: return self.timeout.clone() if isinstance(timeout, Timeout): return timeout.clone() else: # User passed us an int/float. This is for backwards compatibility, # can be removed later return Timeout.from_float(timeout) def _raise_timeout(self, err, url, timeout_value): """Is the error actually a timeout? Will raise a ReadTimeout or pass""" if isinstance(err, SocketTimeout): raise ReadTimeoutError(self, url, "Read timed out. (read timeout=%s)" % timeout_value) # See the above comment about EAGAIN in Python 3. In Python 2 we have # to specifically catch it and throw the timeout error if hasattr(err, 'errno') and err.errno in _blocking_errnos: raise ReadTimeoutError(self, url, "Read timed out. (read timeout=%s)" % timeout_value) # Catch possible read timeouts thrown as SSL errors. If not the # case, rethrow the original. We need to do this because of: # http://bugs.python.org/issue10272 if 'timed out' in str(err) or 'did not complete (read)' in str(err): # Python 2.6 raise ReadTimeoutError(self, url, "Read timed out. (read timeout=%s)" % timeout_value) def _make_request(self, conn, method, url, timeout=_Default, chunked=False, **httplib_request_kw): """ Perform a request on a given urllib connection object taken from our pool. :param conn: a connection from one of our connection pools :param timeout: Socket timeout in seconds for the request. This can be a float or integer, which will set the same timeout value for the socket connect and the socket read, or an instance of :class:`urllib3.util.Timeout`, which gives you more fine-grained control over your timeouts. """ self.num_requests += 1 timeout_obj = self._get_timeout(timeout) timeout_obj.start_connect() conn.timeout = timeout_obj.connect_timeout # Trigger any extra validation we need to do. try: self._validate_conn(conn) except (SocketTimeout, BaseSSLError) as e: # Py2 raises this as a BaseSSLError, Py3 raises it as socket timeout. self._raise_timeout(err=e, url=url, timeout_value=conn.timeout) raise # conn.request() calls httplib.*.request, not the method in # urllib3.request. It also calls makefile (recv) on the socket. if chunked: conn.request_chunked(method, url, **httplib_request_kw) else: conn.request(method, url, **httplib_request_kw) # Reset the timeout for the recv() on the socket read_timeout = timeout_obj.read_timeout # App Engine doesn't have a sock attr if getattr(conn, 'sock', None): # In Python 3 socket.py will catch EAGAIN and return None when you # try and read into the file pointer created by http.client, which # instead raises a BadStatusLine exception. Instead of catching # the exception and assuming all BadStatusLine exceptions are read # timeouts, check for a zero timeout before making the request. if read_timeout == 0: raise ReadTimeoutError( self, url, "R