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rYn$ XGd d d eW ZZ e j[ d Gd d d e\ Z] Gd d d e] Z^ Gd d d e] Z_ Gd d d e] Z` Gd d d e] Za Gd d
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d
e] Zd Gd d d ed Ze Gd d d ed Zf Gd d d ed Zg Gd d d e] Zh Gd d d e] Zi e] Zj d S)a HTTP/1.1 client library
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
|
| response = getresponse()
v
Unread-response [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
Req-started-unread-response _CS_REQ_STARTED
Req-sent-unread-response _CS_REQ_SENT
N)urlsplit HTTPResponseHTTPConnection
HTTPException NotConnectedUnknownProtocolUnknownTransferEncodingUnimplementedFileModeIncompleteRead
InvalidURLImproperConnectionStateCannotSendRequestCannotSendHeaderResponseNotReady
BadStatusLine LineTooLongerror responsesP i ZUNKNOWNZIdlezRequest-startedz Request-sentd e f i, i- i. i/ i0 i1 i3 i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i ZContinuezSwitching ProtocolsOKZCreatedZAcceptedz Non-Authoritative Informationz
No Contentz
Reset ContentzPartial ContentzMultiple ChoiceszMoved PermanentlyZFoundz See Otherz Not Modifiedz Use Proxyz(Unused)i2 zTemporary Redirectz Bad RequestZ UnauthorizedzPayment RequiredZ Forbiddenz Not FoundzMethod Not AllowedzNot Acceptablez Proxy Authentication RequiredzRequest TimeoutZConflictZGonezLength RequiredzPrecondition FailedzRequest Entity Too LargezRequest-URI Too LongzUnsupported Media Typez Requested Range Not SatisfiablezExpectation FailedzPrecondition RequiredzToo Many Requestsz Request Header Fields Too LargezInternal Server ErrorzNot Implementedz Bad GatewayzService UnavailablezGateway TimeoutzHTTP Version Not Supportedz Network Authentication Requiredi i s [^:\s][^:\r\n]*s \n(?![ \t])|\r(?![ \t\n])ZPATCHZPOSTZPUTc @ s e Z d Z d d Z d S) HTTPMessagec C s | j d } t | } g } d } xn | j D]` } | d | j | k r` d } n | d d j s d } n | r5 | j | q5 q5 W| S)a Find all header lines matching a given header name.
Look through the list of headers and find all lines matching a given
header name (and their continuation lines). A list of the lines is
returned, without interpretation. If the header does not occur, an
empty list is returned. If the header occurs multiple times, all
occurrences are returned. Case is not important in the header name.
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__module__ __qualname__r0 r. r. r. r/ r" s r" c C s g } xz | j t d } t | t k r= t d n | j | t | t k ro t d t n | d k r Pq q Wd 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.
But a TextIOWrapper around self.rfile would buffer too many bytes
from the stream, bytes which we later need to read as bytes.
So we read the correct bytes here, as bytes, for email Parser
to parse.
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z
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rA c sQ e Z d Z d d d d d Z d d Z d d Z d d
Z d d Z f d
d Z f d d Z d d Z
d d Z d f d d Z d d Z
d d Z d d Z d d Z d d Z d! d" Z d# d$ Z d% d& Z d d' d( Z d) d* Z d+ d, Z d- d. Z d/ d0 Z d1 d2 Z S)3r r Nc C sw | j d | _ | | _ | | _ d | _ | _ t | _ t | _ t | _ t | _
t | _ t | _ t | _
d S)Nrb)makefiler?
debuglevel_methodr@ msg_UNKNOWNversionstatusreasonchunked
chunk_leftlength
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d d \ } } } WnO t k
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t | n y7 t | } | d k s:| d
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rjt | Yn X| | | f S) Nr$ z
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zHTTPResponse._read_statusc C s | j d k r d Sx | j \ } } } | t k r; Pn xp | j j t d } t | t k ru t d n | j } | s Pn | j d k r> t
d | q> q> Wq W| | _ | _ | j | _
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k rd | _ d | _ n d | _ | j | _ d | _ | j j d } | j j d } | rE| j rEy t | | _ Wn t k
r&d | _ YqNX| j d k rNd | _ qNn d | _ | t k s| t k sd | k o}d k n s| j d k rd | _ n | j r| j r| j d k rd | _ n d S)Nr$ z header liner zheader:HTTP/1.0HTTP/0.9
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zHTTPResponse.beginc C s | j j d } | j d k rS | j j d } | rO d | j k rO d Sd S| j j d ri d S| r d | j k r d S| j j d } | r d | j k r d Sd S)NZ
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keep-alivezproxy-connection)r@ rh rH r% )r* ZconnZpconnr. r. r/ ri s zHTTPResponse._check_closec C s | j } d | _ | j d S)N)r? ro )r* r? r. r. r/ r[ s zHTTPResponse._close_connc
s/ z t j Wd | j r* | j n Xd S)N)superro r? r[ )r* ) __class__r. r/ ro s zHTTPResponse.closec s* t j | j r& | j j n d S)N)rp flushr? )r* )rq r. r/ rr s
zHTTPResponse.flushc C s d S)NTr. )r* r. r. r/ readable s zHTTPResponse.readablec C s
| j d k S)z!True if the connection is closed.N)r? )r* r. r. r/ isclosed s zHTTPResponse.isclosedc s | j d k r d S| j d k r0 | j d S| d k rR t t | j | S| j re | j S| j d k r | j j } nA y | j | j } Wn t
k
r | j Yn Xd | _ | j | Sd S)Nr6 rd r ) r? rE r[ rp r readrK _readall_chunkedrM
_safe_readr
)r* amts)rq r. r/ ru s&
zHTTPResponse.readc C s | j d k r d S| j d k r0 | j d S| j rF | j | S| j d k r t | | j k r t | d | j } q n | j j | } | r | r | j n7 | j d k r | j | 8_ | j s | j q n | S)Nr rd ) r? rE r[ rK _readinto_chunkedrM r&
memoryviewreadinto)r* br, r. r. r/ r| - s$
zHTTPResponse.readintoc C s | j j t d } t | t k r7 t d n | j d } | d k re | d | } n y t | d SWn t k
r | j Yn Xd S)Nr$ z
chunk size ;r ) r? r8 r9 r& r findr\ rY r[ )r* r- ir. r. r/ _read_next_chunk_sizeK s
z"HTTPResponse._read_next_chunk_sizec C s\ xU | j j t d } t | t k r: t d n | sD Pn | d k r Pq q Wd S)Nr$ z trailer line
r6 )r r r6 )r? r8 r9 r& r )r* r- r. r. r/ _read_and_discard_trailer[ s z&HTTPResponse._read_and_discard_trailerc C s | j t k s t | j } g } x | d k r y | j } | d k rR Pn Wq t k
r| t d j | Yq Xn | j | j | | j d d } q' W| j
| j d j | S)Nr r6 rS ) rK rG AssertionErrorrL r rY r
r; r) rw r r[ )r* rL valuer. r. r/ rv i s"
z HTTPResponse._readall_chunkedc C sp | j t k s t | j } d } t | } x%| d k r y | j } | d k r^ Pn Wq t k
r t t | d | Yq Xn t | | k r | j
| } | | | _ | | St | | k r| j
| } | j d d | _ | | S| d | } | j
| } | | d } | | 7} | j d d } q3 W| j | j
| S)Nr rS )rK rG r rL r{ r rY r
bytesr& _safe_readintorw r r[ )r* r} rL total_bytesmvbr, temp_mvbr. r. r/ rz s<
$
z HTTPResponse._readinto_chunkedc C s g } xi | d k rq | j j t | t } | sQ t d j | | n | j | | t | 8} q Wd j | S)aV Read the number of bytes requested, compensating for partial reads.
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.
This function should be used when bytes "should" be present for
reading. If the bytes are truly not available (due to EOF), then the
IncompleteRead exception can be used to detect the problem.
r r6 )r? ru min MAXAMOUNTr
r; r) r& )r* rx ry chunkr. r. r/ rw s
zHTTPResponse._safe_readc C s d } t | } x | t | k r t t | k r^ | d t } | j j | } n | j j | } | s t t | d | t | n | | d } | | 7} q W| S)z2Same as _safe_read, but for reading into a buffer.r N)r{ r& r r? r| r
r )r* r} r r r r, r. r. r/ r s (zHTTPResponse._safe_readintoc C s
| j j S)N)r? fileno)r* r. r. r/ r s zHTTPResponse.filenoc C sg | j d k r t n | j j | p0 | } t | t sR t | d rV | Sd j | Sd S)N__iter__z, )r@ r Zget_all
isinstancerU hasattrr; )r* r+ defaultr@ r. r. r/ getheader s zHTTPResponse.getheaderc C s. | j d k r t n t | j j S)z&Return list of (header, value) tuples.N)r@ r listitems)r* r. r. r/
getheaders s zHTTPResponse.getheadersc C s | S)Nr. )r* r. r. r/ r s zHTTPResponse.__iter__c C s | j S)N)r@ )r* r. r. r/ info s zHTTPResponse.infoc C s | j S)N)rQ )r* r. r. r/ geturl s zHTTPResponse.geturlc C s | j S)N)rI )r* r. r. r/ getcode s zHTTPResponse.getcode)r1 r2 r3 rR r] rn ri r[ ro rr rs rt ru r| r r rv rz rw r r r r r r r r r. r. )rq r/ r 4 s0 P
) c @ s* e Z d Z d Z d Z e Z e Z d Z d Z
d Z d e j
d d d Z d d d d
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d Z d d Z d d Z d d Z d d Z d d Z d d d Z d d d d Z d d Z d d d Z d i d! d" Z d# d$ Z d% d& Z d' d( Z d S))r ra zHTTP/1.1r$ r i @ Nc C s | | _ | | _ d | _ g | _ d | _ t | _ d | _ d | _ d | _ i | _
| j | | \ | _ | _
t j | _ d S)N)timeoutsource_addressrO _buffer_HTTPConnection__response_CS_IDLE_HTTPConnection__staterE _tunnel_host _tunnel_port_tunnel_headers
_get_hostporthostportsocketZcreate_connection_create_connection)r* r r r r r. r. r/ rR s zHTTPConnection.__init__c C sY | j r t d n | j | | \ | _ | _ | rH | | _ n
| j j d S)aD Set up host and port for HTTP CONNECT tunnelling.
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.
This method must be called before the HTML connection has been
established.
The headers argument should be a mapping of extra HTTP headers to send
with the CONNECT request.
z.Can't set up tunnel for established connectionN)rO RuntimeErrorr r r r clear)r* r r r@ r. r. r/
set_tunnel s zHTTPConnection.set_tunnelc C s | d k r| j d } | j d } | | k r y t | | d d } WnV t k
r | | d d d k r | j } n t d | | d d Yn X| d | } n | j } | r| d d k r| d d k r| d d } qn | | f S)
Nr# ]r$ rT znonnumeric port: '%s'r [r )rfindr\ rY default_portr )r* r r r jr. r. r/ r 1 s
# &z HTTPConnection._get_hostportc C s
| | _ d S)N)rD )r* levelr. r. r/ set_debuglevelE s z HTTPConnection.set_debuglevelc C sL d | j | j f } | j d } | j | xI | j j D]8 \ } } d | | f } | j d } | j | qB W| j d | j | j d | j } | j \ } } }
| d k r | j
t d | |
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k r Pq q Wd S)NzCONNECT %s:%d HTTP/1.0
asciiz%s: %s
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rP r z Tunnel connection failed: %d %sr$ z header line
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header_strZ header_bytesresponserH rg messager- r. r. r/ _tunnelH s.
zHTTPConnection._tunnelc C sD | j | j | j f | j | j | _ | j r@ | j n d S)z3Connect to the host and port specified in __init__.N)r r r r r rO r r )r* r. r. r/ connectd s zHTTPConnection.connectc C s_ t | _ z) | j } | r1 d | _ | j n Wd | j } | rZ d | _ | j n Xd S)z(Close the connection to the HTTP server.N)r r rO ro r )r* rO r r. r. r/ ro l s zHTTPConnection.closec C s | j d k r1 | j r% | j q1 t n | j d k rV t d t | n d } t | d r,| j d k r t d n d } y
| j } Wn t k
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``data`` can be a string object, a bytes object, an array object, a
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Nr zsend:i ru zsendIng a read()ableFr} Tz encoding file using iso-8859-1z
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A message_body may be specified, to be appended to the request.
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d k r!| sd } | j d r t | \ } } } } } n | r*y | j d } Wn! t
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| j k r| j d | q| j d } | j d d | |
f n | s!| j d d q!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
N/z%s %s %sr ra rT ZhttpZidnaZHostr# r [ ]z%s:%szAccept-EncodingZidentity)r rt r r _CS_REQ_STARTEDr
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z HTTPConnection._send_requestc C s | j r$ | j j r$ d | _ n | j t k s< | j rN t | j n | j d k r | j | j | j d | j } n | j | j d | j } yO | j | j
t k s t t
| _ | j
r | j n | | _ | SWn | j Yn Xd S)a/ Get the response from the server.
If the HTTPConnection is in the correct state, returns an
instance of HTTPResponse or of whatever object is returned by
class the response_class variable.
If a request has not been sent or if a previous response has
not be handled, ResponseNotReady is raised. If the HTTP
response indicates that the connection should be closed, then
it will be closed before the response is returned. When the
connection is closed, the underlying socket is closed.
Nr rP )r rt r r r rD r rO rE rn rN rG r r ro )r* r r. r. r/ getresponse s&
zHTTPConnection.getresponse) r1 r2 r3 r r r r HTTP_PORTr r rD r r _GLOBAL_DEFAULT_TIMEOUTrR r r r r r ro r r r r r r r r r r r. r. r. r/ r s2 0 { c s^ e Z d Z d Z e Z d d d e j d d d d d f d d Z f d d Z S) HTTPSConnectionz(This class allows communication via SSL.Ncontextcheck_hostnamec
s t t | j | | | | | | _ | | _ | d k rL t j } n | j t j k } | d k rv | j } n | r | r t
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Nc C s" | f | _ | | _ | | _ d S)N)r partialexpected)r* r r r. r. r/ rR ) s zIncompleteRead.__init__c C s< | j d k r d | j } n d } d t | j | f S)Nz, %i more expectedrT z IncompleteRead(%i bytes read%s))r r& r )r* er. r. r/ __repr__- s zIncompleteRead.__repr__c C s
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