Current File : //snap/core/17212/usr/lib/python3.5/http/__pycache__/client.cpython-35.pyc
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HTTP/1.1 client library
<intro stuff goes here>
<other stuff, too>
HTTPConnection goes through a number of "states", which define when a client
may legally make another request or fetch the response for a particular
request. This diagram details these state transitions:
(null)
|
| HTTPConnection()
v
Idle
|
| putrequest()
v
Request-started
|
| ( putheader() )* endheaders()
v
Request-sent
|\_____________________________
| | getresponse() raises
| response = getresponse() | ConnectionError
v v
Unread-response Idle
[Response-headers-read]
|\____________________
| |
| response.read() | putrequest()
v v
Idle Req-started-unread-response
______/|
/ |
response.read() | | ( putheader() )* endheaders()
v v
Request-started Req-sent-unread-response
|
| response.read()
v
Request-sent
This diagram presents the following rules:
-- a second request may not be started until {response-headers-read}
-- a response [object] cannot be retrieved until {request-sent}
-- there is no differentiation between an unread response body and a
partially read response body
Note: this enforcement is applied by the HTTPConnection class. The
HTTPResponse class does not enforce this state machine, which
implies sophisticated clients may accelerate the request/response
pipeline. Caution should be taken, though: accelerating the states
beyond the above pattern may imply knowledge of the server's
connection-close behavior for certain requests. For example, it
is impossible to tell whether the server will close the connection
UNTIL the response headers have been read; this means that further
requests cannot be placed into the pipeline until it is known that
the server will NOT be closing the connection.
Logical State __state __response
------------- ------- ----------
Idle _CS_IDLE None
Request-started _CS_REQ_STARTED None
Request-sent _CS_REQ_SENT None
Unread-response _CS_IDLE <response_class>
Req-started-unread-response _CS_REQ_STARTED <response_class>
Req-sent-unread-response _CS_REQ_SENT <response_class>
� N)�urlsplit� HTTPResponse�HTTPConnection�
HTTPException� NotConnected�UnknownProtocol�UnknownTransferEncoding�UnimplementedFileMode�IncompleteRead�
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<dictcomp>k s r i i �d s [^:\s][^:\r\n]*s \n(?![ \t])|\r(?![ \t\n])z[ - ]z[ - ]ZPATCHZPOSTZPUT�datac C s� y | j d � SWno t k
r� } zO t | j | j | j | j d | j � | | j | j � | f � d � WYd d } ~ Xn Xd S)z<Call data.encode("latin-1") but show a better error message.zlatin-1z`%s (%.20r) is not valid Latin-1. Use %s.encode('utf-8') if you want to send it encoded in UTF-8.N)�encode�UnicodeEncodeError�encoding�object�start�end�title)r �name�errr r r �_encode� s r' c @ s e Z d Z d d � Z d S)� HTTPMessagec C s� | j � d } t | � } g } d } xh | j � D]Z } | d | � j � | k r` d } n | d d � j � s| d } | r5 | j | � q5 W| S)a� Find all header lines matching a given header name.
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header name (and their continuation lines). A list of the lines is
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empty list is returned. If the header occurs multiple times, all
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r? c C s@ t | � } d j | � j d � } t j j d | � j | � S)aG Parses only RFC2822 headers from a file pointer.
email Parser wants to see strings rather than bytes.
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Normally, we have a blocking socket, but a read() can be interrupted
by a signal (resulting in a partial read).
Note that we cannot distinguish between EOF and an interrupt when zero
bytes have been read. IncompleteRead() will be raised in this
situation.
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reading. If the bytes are truly not available (due to EOF), then the
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In a connection that uses HTTP CONNECT tunneling, the host passed to the
constructor is used as a proxy server that relays all communication to
the endpoint passed to `set_tunnel`. This done by sending an HTTP
CONNECT request to the proxy server when the connection is established.
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d | | f � | sO| j d d � n d S)a` Send a request to the server.
`method' specifies an HTTP request method, e.g. 'GET'.
`url' specifies the object being requested, e.g. '/index.html'.
`skip_host' if True does not add automatically a 'Host:' header
`skip_accept_encoding' if True does not add automatically an
'Accept-Encoding:' header
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