920 lines
30 KiB
Python
920 lines
30 KiB
Python
"""HTTP/1.1 client library
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<intro stuff goes here>
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<other stuff, too>
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HTTPConnection go through a number of "states", which defines when a client
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may legally make another request or fetch the response for a particular
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request. This diagram details these state transitions:
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(null)
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| HTTPConnection()
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v
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Idle
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| putrequest()
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v
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Request-started
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| ( putheader() )* endheaders()
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v
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Request-sent
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| response = getresponse()
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v
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Unread-response [Response-headers-read]
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|\____________________
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| |
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| response.read() | putrequest()
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v v
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Idle Req-started-unread-response
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______/|
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/ |
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response.read() | | ( putheader() )* endheaders()
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v v
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Request-started Req-sent-unread-response
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| response.read()
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v
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Request-sent
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This diagram presents the following rules:
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-- a second request may not be started until {response-headers-read}
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-- a response [object] cannot be retrieved until {request-sent}
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-- there is no differentiation between an unread response body and a
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partially read response body
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Note: this enforcement is applied by the HTTPConnection class. The
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HTTPResponse class does not enforce this state machine, which
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implies sophisticated clients may accelerate the request/response
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pipeline. Caution should be taken, though: accelerating the states
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beyond the above pattern may imply knowledge of the server's
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connection-close behavior for certain requests. For example, it
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is impossible to tell whether the server will close the connection
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UNTIL the response headers have been read; this means that further
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requests cannot be placed into the pipeline until it is known that
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the server will NOT be closing the connection.
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Logical State __state __response
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------------- ------- ----------
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Idle _CS_IDLE None
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Request-started _CS_REQ_STARTED None
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Request-sent _CS_REQ_SENT None
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Unread-response _CS_IDLE <response_class>
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Req-started-unread-response _CS_REQ_STARTED <response_class>
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Req-sent-unread-response _CS_REQ_SENT <response_class>
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"""
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import errno
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import mimetools
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import socket
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from urlparse import urlsplit
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try:
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from cStringIO import StringIO
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except ImportError:
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from StringIO import StringIO
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__all__ = ["HTTP", "HTTPResponse", "HTTPConnection", "HTTPSConnection",
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"HTTPException", "NotConnected", "UnknownProtocol",
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"UnknownTransferEncoding", "IllegalKeywordArgument",
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"UnimplementedFileMode", "IncompleteRead", "InvalidURL",
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"ImproperConnectionState", "CannotSendRequest", "CannotSendHeader",
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"ResponseNotReady", "BadStatusLine", "error"]
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HTTP_PORT = 80
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HTTPS_PORT = 443
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_UNKNOWN = 'UNKNOWN'
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# connection states
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_CS_IDLE = 'Idle'
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_CS_REQ_STARTED = 'Request-started'
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_CS_REQ_SENT = 'Request-sent'
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class HTTPResponse:
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def __init__(self, sock, debuglevel=0):
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self.fp = sock.makefile('rb', 0)
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self.debuglevel = debuglevel
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self.msg = None
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# from the Status-Line of the response
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self.version = _UNKNOWN # HTTP-Version
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self.status = _UNKNOWN # Status-Code
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self.reason = _UNKNOWN # Reason-Phrase
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self.chunked = _UNKNOWN # is "chunked" being used?
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self.chunk_left = _UNKNOWN # bytes left to read in current chunk
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self.length = _UNKNOWN # number of bytes left in response
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self.will_close = _UNKNOWN # conn will close at end of response
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def begin(self):
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if self.msg is not None:
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# we've already started reading the response
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return
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line = self.fp.readline()
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if self.debuglevel > 0:
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print "reply:", repr(line)
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try:
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[version, status, reason] = line.split(None, 2)
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except ValueError:
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try:
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[version, status] = line.split(None, 1)
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reason = ""
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except ValueError:
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version = "HTTP/0.9"
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status = "200"
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reason = ""
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if version[:5] != 'HTTP/':
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self.close()
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raise BadStatusLine(line)
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# The status code is a three-digit number
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try:
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self.status = status = int(status)
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if status < 100 or status > 999:
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raise BadStatusLine(line)
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except ValueError:
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raise BadStatusLine(line)
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self.reason = reason.strip()
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if version == 'HTTP/1.0':
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self.version = 10
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elif version.startswith('HTTP/1.'):
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self.version = 11 # use HTTP/1.1 code for HTTP/1.x where x>=1
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elif version == 'HTTP/0.9':
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self.version = 9
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else:
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raise UnknownProtocol(version)
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if self.version == 9:
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self.msg = mimetools.Message(StringIO())
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return
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self.msg = mimetools.Message(self.fp, 0)
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if self.debuglevel > 0:
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for hdr in self.msg.headers:
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print "header:", hdr,
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# don't let the msg keep an fp
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self.msg.fp = None
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# are we using the chunked-style of transfer encoding?
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tr_enc = self.msg.getheader('transfer-encoding')
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if tr_enc:
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if tr_enc.lower() != 'chunked':
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raise UnknownTransferEncoding()
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self.chunked = 1
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self.chunk_left = None
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else:
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self.chunked = 0
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# will the connection close at the end of the response?
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conn = self.msg.getheader('connection')
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if conn:
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conn = conn.lower()
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# a "Connection: close" will always close the connection. if we
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# don't see that and this is not HTTP/1.1, then the connection will
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# close unless we see a Keep-Alive header.
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self.will_close = conn.find('close') != -1 or \
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( self.version != 11 and \
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not self.msg.getheader('keep-alive') )
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else:
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# for HTTP/1.1, the connection will always remain open
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# otherwise, it will remain open IFF we see a Keep-Alive header
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self.will_close = self.version != 11 and \
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not self.msg.getheader('keep-alive')
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# do we have a Content-Length?
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# NOTE: RFC 2616, S4.4, #3 says we ignore this if tr_enc is "chunked"
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length = self.msg.getheader('content-length')
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if length and not self.chunked:
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try:
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self.length = int(length)
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except ValueError:
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self.length = None
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else:
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self.length = None
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# does the body have a fixed length? (of zero)
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if (status == 204 or # No Content
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status == 304 or # Not Modified
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100 <= status < 200): # 1xx codes
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self.length = 0
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# if the connection remains open, and we aren't using chunked, and
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# a content-length was not provided, then assume that the connection
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# WILL close.
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if not self.will_close and \
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not self.chunked and \
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self.length is None:
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self.will_close = 1
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def close(self):
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if self.fp:
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self.fp.close()
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self.fp = None
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def isclosed(self):
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# NOTE: it is possible that we will not ever call self.close(). This
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# case occurs when will_close is TRUE, length is None, and we
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# read up to the last byte, but NOT past it.
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#
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# IMPLIES: if will_close is FALSE, then self.close() will ALWAYS be
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# called, meaning self.isclosed() is meaningful.
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return self.fp is None
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def read(self, amt=None):
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if self.fp is None:
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return ''
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if self.chunked:
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chunk_left = self.chunk_left
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value = ''
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while 1:
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if chunk_left is None:
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line = self.fp.readline()
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i = line.find(';')
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if i >= 0:
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line = line[:i] # strip chunk-extensions
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chunk_left = int(line, 16)
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if chunk_left == 0:
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break
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if amt is None:
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value = value + self._safe_read(chunk_left)
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elif amt < chunk_left:
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value = value + self._safe_read(amt)
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self.chunk_left = chunk_left - amt
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return value
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elif amt == chunk_left:
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value = value + self._safe_read(amt)
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self._safe_read(2) # toss the CRLF at the end of the chunk
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self.chunk_left = None
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return value
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else:
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value = value + self._safe_read(chunk_left)
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amt = amt - chunk_left
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# we read the whole chunk, get another
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self._safe_read(2) # toss the CRLF at the end of the chunk
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chunk_left = None
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# read and discard trailer up to the CRLF terminator
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### note: we shouldn't have any trailers!
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while 1:
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line = self.fp.readline()
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if line == '\r\n':
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break
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# we read everything; close the "file"
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self.close()
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return value
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elif amt is None:
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# unbounded read
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if self.will_close:
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s = self.fp.read()
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else:
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s = self._safe_read(self.length)
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self.close() # we read everything
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return s
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if self.length is not None:
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if amt > self.length:
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# clip the read to the "end of response"
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amt = self.length
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self.length = self.length - amt
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# we do not use _safe_read() here because this may be a .will_close
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# connection, and the user is reading more bytes than will be provided
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# (for example, reading in 1k chunks)
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s = self.fp.read(amt)
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return s
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def _safe_read(self, amt):
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"""Read the number of bytes requested, compensating for partial reads.
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Normally, we have a blocking socket, but a read() can be interrupted
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by a signal (resulting in a partial read).
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Note that we cannot distinguish between EOF and an interrupt when zero
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bytes have been read. IncompleteRead() will be raised in this
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situation.
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This function should be used when <amt> bytes "should" be present for
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reading. If the bytes are truly not available (due to EOF), then the
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IncompleteRead exception can be used to detect the problem.
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"""
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s = ''
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while amt > 0:
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chunk = self.fp.read(amt)
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if not chunk:
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raise IncompleteRead(s)
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s = s + chunk
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amt = amt - len(chunk)
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return s
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def getheader(self, name, default=None):
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if self.msg is None:
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raise ResponseNotReady()
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return self.msg.getheader(name, default)
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class HTTPConnection:
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_http_vsn = 11
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_http_vsn_str = 'HTTP/1.1'
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response_class = HTTPResponse
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default_port = HTTP_PORT
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auto_open = 1
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debuglevel = 0
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def __init__(self, host, port=None):
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self.sock = None
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self.__response = None
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self.__state = _CS_IDLE
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self._set_hostport(host, port)
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def _set_hostport(self, host, port):
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if port is None:
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i = host.find(':')
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if i >= 0:
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try:
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port = int(host[i+1:])
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except ValueError:
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raise InvalidURL, "nonnumeric port: '%s'"%host[i+1:]
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host = host[:i]
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else:
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port = self.default_port
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self.host = host
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self.port = port
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def set_debuglevel(self, level):
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self.debuglevel = level
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def connect(self):
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"""Connect to the host and port specified in __init__."""
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msg = "getaddrinfo returns an empty list"
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for res in socket.getaddrinfo(self.host, self.port, 0, socket.SOCK_STREAM):
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af, socktype, proto, canonname, sa = res
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try:
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self.sock = socket.socket(af, socktype, proto)
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if self.debuglevel > 0:
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print "connect: (%s, %s)" % (self.host, self.port)
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self.sock.connect(sa)
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except socket.error, msg:
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if self.debuglevel > 0:
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print 'connect fail:', (self.host, self.port)
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if self.sock:
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self.sock.close()
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self.sock = None
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continue
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break
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if not self.sock:
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raise socket.error, msg
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def close(self):
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"""Close the connection to the HTTP server."""
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if self.sock:
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self.sock.close() # close it manually... there may be other refs
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self.sock = None
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if self.__response:
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self.__response.close()
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self.__response = None
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self.__state = _CS_IDLE
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def send(self, str):
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"""Send `str' to the server."""
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if self.sock is None:
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if self.auto_open:
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self.connect()
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else:
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raise NotConnected()
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# send the data to the server. if we get a broken pipe, then close
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# the socket. we want to reconnect when somebody tries to send again.
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#
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# NOTE: we DO propagate the error, though, because we cannot simply
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# ignore the error... the caller will know if they can retry.
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if self.debuglevel > 0:
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print "send:", repr(str)
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try:
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self.sock.sendall(str)
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except socket.error, v:
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if v[0] == 32: # Broken pipe
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self.close()
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raise
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def putrequest(self, method, url, skip_host=0):
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"""Send a request to the server.
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`method' specifies an HTTP request method, e.g. 'GET'.
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`url' specifies the object being requested, e.g. '/index.html'.
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"""
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# check if a prior response has been completed
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if self.__response and self.__response.isclosed():
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self.__response = None
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#
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# in certain cases, we cannot issue another request on this connection.
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# this occurs when:
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# 1) we are in the process of sending a request. (_CS_REQ_STARTED)
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# 2) a response to a previous request has signalled that it is going
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# to close the connection upon completion.
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# 3) the headers for the previous response have not been read, thus
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# we cannot determine whether point (2) is true. (_CS_REQ_SENT)
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#
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# if there is no prior response, then we can request at will.
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#
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# if point (2) is true, then we will have passed the socket to the
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# response (effectively meaning, "there is no prior response"), and
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# will open a new one when a new request is made.
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#
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# Note: if a prior response exists, then we *can* start a new request.
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# We are not allowed to begin fetching the response to this new
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# request, however, until that prior response is complete.
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#
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if self.__state == _CS_IDLE:
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self.__state = _CS_REQ_STARTED
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else:
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raise CannotSendRequest()
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if not url:
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url = '/'
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str = '%s %s %s\r\n' % (method, url, self._http_vsn_str)
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try:
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self.send(str)
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except socket.error, v:
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# trap 'Broken pipe' if we're allowed to automatically reconnect
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if v[0] != 32 or not self.auto_open:
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raise
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# try one more time (the socket was closed; this will reopen)
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self.send(str)
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if self._http_vsn == 11:
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# Issue some standard headers for better HTTP/1.1 compliance
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if not skip_host:
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# this header is issued *only* for HTTP/1.1
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# connections. more specifically, this means it is
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# only issued when the client uses the new
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# HTTPConnection() class. backwards-compat clients
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# will be using HTTP/1.0 and those clients may be
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# issuing this header themselves. we should NOT issue
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# it twice; some web servers (such as Apache) barf
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# when they see two Host: headers
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# If we need a non-standard port,include it in the
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# header. If the request is going through a proxy,
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# but the host of the actual URL, not the host of the
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# proxy.
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netloc = ''
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if url.startswith('http'):
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nil, netloc, nil, nil, nil = urlsplit(url)
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if netloc:
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self.putheader('Host', netloc)
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elif self.port == HTTP_PORT:
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self.putheader('Host', self.host)
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else:
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self.putheader('Host', "%s:%s" % (self.host, self.port))
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# note: we are assuming that clients will not attempt to set these
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# headers since *this* library must deal with the
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# consequences. this also means that when the supporting
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# libraries are updated to recognize other forms, then this
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# code should be changed (removed or updated).
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# we only want a Content-Encoding of "identity" since we don't
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# support encodings such as x-gzip or x-deflate.
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self.putheader('Accept-Encoding', 'identity')
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# we can accept "chunked" Transfer-Encodings, but no others
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# NOTE: no TE header implies *only* "chunked"
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#self.putheader('TE', 'chunked')
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# if TE is supplied in the header, then it must appear in a
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# Connection header.
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#self.putheader('Connection', 'TE')
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else:
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# For HTTP/1.0, the server will assume "not chunked"
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pass
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def putheader(self, header, value):
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"""Send a request header line to the server.
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For example: h.putheader('Accept', 'text/html')
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"""
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if self.__state != _CS_REQ_STARTED:
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raise CannotSendHeader()
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str = '%s: %s\r\n' % (header, value)
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self.send(str)
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def endheaders(self):
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"""Indicate that the last header line has been sent to the server."""
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if self.__state == _CS_REQ_STARTED:
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self.__state = _CS_REQ_SENT
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else:
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raise CannotSendHeader()
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self.send('\r\n')
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def request(self, method, url, body=None, headers={}):
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"""Send a complete request to the server."""
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try:
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self._send_request(method, url, body, headers)
|
|
except socket.error, v:
|
|
# trap 'Broken pipe' if we're allowed to automatically reconnect
|
|
if v[0] != 32 or not self.auto_open:
|
|
raise
|
|
# try one more time
|
|
self._send_request(method, url, body, headers)
|
|
|
|
def _send_request(self, method, url, body, headers):
|
|
# If headers already contains a host header, then define the
|
|
# optional skip_host argument to putrequest(). The check is
|
|
# harder because field names are case insensitive.
|
|
if 'Host' in (headers
|
|
or [k for k in headers.iterkeys() if k.lower() == "host"]):
|
|
self.putrequest(method, url, skip_host=1)
|
|
else:
|
|
self.putrequest(method, url)
|
|
|
|
if body:
|
|
self.putheader('Content-Length', str(len(body)))
|
|
for hdr, value in headers.items():
|
|
self.putheader(hdr, value)
|
|
self.endheaders()
|
|
|
|
if body:
|
|
self.send(body)
|
|
|
|
def getresponse(self):
|
|
"Get the response from the server."
|
|
|
|
# check if a prior response has been completed
|
|
if self.__response and self.__response.isclosed():
|
|
self.__response = None
|
|
|
|
#
|
|
# if a prior response exists, then it must be completed (otherwise, we
|
|
# cannot read this response's header to determine the connection-close
|
|
# behavior)
|
|
#
|
|
# note: if a prior response existed, but was connection-close, then the
|
|
# socket and response were made independent of this HTTPConnection
|
|
# object since a new request requires that we open a whole new
|
|
# connection
|
|
#
|
|
# this means the prior response had one of two states:
|
|
# 1) will_close: this connection was reset and the prior socket and
|
|
# response operate independently
|
|
# 2) persistent: the response was retained and we await its
|
|
# isclosed() status to become true.
|
|
#
|
|
if self.__state != _CS_REQ_SENT or self.__response:
|
|
raise ResponseNotReady()
|
|
|
|
if self.debuglevel > 0:
|
|
response = self.response_class(self.sock, self.debuglevel)
|
|
else:
|
|
response = self.response_class(self.sock)
|
|
|
|
response.begin()
|
|
self.__state = _CS_IDLE
|
|
|
|
if response.will_close:
|
|
# this effectively passes the connection to the response
|
|
self.close()
|
|
else:
|
|
# remember this, so we can tell when it is complete
|
|
self.__response = response
|
|
|
|
return response
|
|
|
|
|
|
class FakeSocket:
|
|
def __init__(self, sock, ssl):
|
|
self.__sock = sock
|
|
self.__ssl = ssl
|
|
|
|
def makefile(self, mode, bufsize=None):
|
|
"""Return a readable file-like object with data from socket.
|
|
|
|
This method offers only partial support for the makefile
|
|
interface of a real socket. It only supports modes 'r' and
|
|
'rb' and the bufsize argument is ignored.
|
|
|
|
The returned object contains *all* of the file data
|
|
"""
|
|
if mode != 'r' and mode != 'rb':
|
|
raise UnimplementedFileMode()
|
|
|
|
msgbuf = []
|
|
while 1:
|
|
try:
|
|
buf = self.__ssl.read()
|
|
except socket.sslerror, err:
|
|
if (err[0] == socket.SSL_ERROR_WANT_READ
|
|
or err[0] == socket.SSL_ERROR_WANT_WRITE):
|
|
continue
|
|
if (err[0] == socket.SSL_ERROR_ZERO_RETURN
|
|
or err[0] == socket.SSL_ERROR_EOF):
|
|
break
|
|
raise
|
|
except socket.error, err:
|
|
if err[0] == errno.EINTR:
|
|
continue
|
|
raise
|
|
if buf == '':
|
|
break
|
|
msgbuf.append(buf)
|
|
return StringIO("".join(msgbuf))
|
|
|
|
def send(self, stuff, flags = 0):
|
|
return self.__ssl.write(stuff)
|
|
|
|
def sendall(self, stuff, flags = 0):
|
|
return self.__ssl.write(stuff)
|
|
|
|
def recv(self, len = 1024, flags = 0):
|
|
return self.__ssl.read(len)
|
|
|
|
def __getattr__(self, attr):
|
|
return getattr(self.__sock, attr)
|
|
|
|
|
|
class HTTPSConnection(HTTPConnection):
|
|
"This class allows communication via SSL."
|
|
|
|
default_port = HTTPS_PORT
|
|
|
|
def __init__(self, host, port=None, **x509):
|
|
keys = x509.keys()
|
|
try:
|
|
keys.remove('key_file')
|
|
except ValueError:
|
|
pass
|
|
try:
|
|
keys.remove('cert_file')
|
|
except ValueError:
|
|
pass
|
|
if keys:
|
|
raise IllegalKeywordArgument()
|
|
HTTPConnection.__init__(self, host, port)
|
|
self.key_file = x509.get('key_file')
|
|
self.cert_file = x509.get('cert_file')
|
|
|
|
def connect(self):
|
|
"Connect to a host on a given (SSL) port."
|
|
|
|
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
|
|
sock.connect((self.host, self.port))
|
|
realsock = sock
|
|
if hasattr(sock, "_sock"):
|
|
realsock = sock._sock
|
|
ssl = socket.ssl(realsock, self.key_file, self.cert_file)
|
|
self.sock = FakeSocket(sock, ssl)
|
|
|
|
|
|
class HTTP:
|
|
"Compatibility class with httplib.py from 1.5."
|
|
|
|
_http_vsn = 10
|
|
_http_vsn_str = 'HTTP/1.0'
|
|
|
|
debuglevel = 0
|
|
|
|
_connection_class = HTTPConnection
|
|
|
|
def __init__(self, host='', port=None):
|
|
"Provide a default host, since the superclass requires one."
|
|
|
|
# some joker passed 0 explicitly, meaning default port
|
|
if port == 0:
|
|
port = None
|
|
|
|
# Note that we may pass an empty string as the host; this will throw
|
|
# an error when we attempt to connect. Presumably, the client code
|
|
# will call connect before then, with a proper host.
|
|
self._setup(self._connection_class(host, port))
|
|
|
|
def _setup(self, conn):
|
|
self._conn = conn
|
|
|
|
# set up delegation to flesh out interface
|
|
self.send = conn.send
|
|
self.putrequest = conn.putrequest
|
|
self.endheaders = conn.endheaders
|
|
self.set_debuglevel = conn.set_debuglevel
|
|
|
|
conn._http_vsn = self._http_vsn
|
|
conn._http_vsn_str = self._http_vsn_str
|
|
|
|
self.file = None
|
|
|
|
def connect(self, host=None, port=None):
|
|
"Accept arguments to set the host/port, since the superclass doesn't."
|
|
|
|
if host is not None:
|
|
self._conn._set_hostport(host, port)
|
|
self._conn.connect()
|
|
|
|
def getfile(self):
|
|
"Provide a getfile, since the superclass' does not use this concept."
|
|
return self.file
|
|
|
|
def putheader(self, header, *values):
|
|
"The superclass allows only one value argument."
|
|
self._conn.putheader(header, '\r\n\t'.join(values))
|
|
|
|
def getreply(self):
|
|
"""Compat definition since superclass does not define it.
|
|
|
|
Returns a tuple consisting of:
|
|
- server status code (e.g. '200' if all goes well)
|
|
- server "reason" corresponding to status code
|
|
- any RFC822 headers in the response from the server
|
|
"""
|
|
try:
|
|
response = self._conn.getresponse()
|
|
except BadStatusLine, e:
|
|
### hmm. if getresponse() ever closes the socket on a bad request,
|
|
### then we are going to have problems with self.sock
|
|
|
|
### should we keep this behavior? do people use it?
|
|
# keep the socket open (as a file), and return it
|
|
self.file = self._conn.sock.makefile('rb', 0)
|
|
|
|
# close our socket -- we want to restart after any protocol error
|
|
self.close()
|
|
|
|
self.headers = None
|
|
return -1, e.line, None
|
|
|
|
self.headers = response.msg
|
|
self.file = response.fp
|
|
return response.status, response.reason, response.msg
|
|
|
|
def close(self):
|
|
self._conn.close()
|
|
|
|
# note that self.file == response.fp, which gets closed by the
|
|
# superclass. just clear the object ref here.
|
|
### hmm. messy. if status==-1, then self.file is owned by us.
|
|
### well... we aren't explicitly closing, but losing this ref will
|
|
### do it
|
|
self.file = None
|
|
|
|
if hasattr(socket, 'ssl'):
|
|
class HTTPS(HTTP):
|
|
"""Compatibility with 1.5 httplib interface
|
|
|
|
Python 1.5.2 did not have an HTTPS class, but it defined an
|
|
interface for sending http requests that is also useful for
|
|
https.
|
|
"""
|
|
|
|
_connection_class = HTTPSConnection
|
|
|
|
def __init__(self, host='', port=None, **x509):
|
|
# provide a default host, pass the X509 cert info
|
|
|
|
# urf. compensate for bad input.
|
|
if port == 0:
|
|
port = None
|
|
self._setup(self._connection_class(host, port, **x509))
|
|
|
|
# we never actually use these for anything, but we keep them
|
|
# here for compatibility with post-1.5.2 CVS.
|
|
self.key_file = x509.get('key_file')
|
|
self.cert_file = x509.get('cert_file')
|
|
|
|
|
|
class HTTPException(Exception):
|
|
pass
|
|
|
|
class NotConnected(HTTPException):
|
|
pass
|
|
|
|
class InvalidURL(HTTPException):
|
|
pass
|
|
|
|
class UnknownProtocol(HTTPException):
|
|
def __init__(self, version):
|
|
self.version = version
|
|
|
|
class UnknownTransferEncoding(HTTPException):
|
|
pass
|
|
|
|
class IllegalKeywordArgument(HTTPException):
|
|
pass
|
|
|
|
class UnimplementedFileMode(HTTPException):
|
|
pass
|
|
|
|
class IncompleteRead(HTTPException):
|
|
def __init__(self, partial):
|
|
self.partial = partial
|
|
|
|
class ImproperConnectionState(HTTPException):
|
|
pass
|
|
|
|
class CannotSendRequest(ImproperConnectionState):
|
|
pass
|
|
|
|
class CannotSendHeader(ImproperConnectionState):
|
|
pass
|
|
|
|
class ResponseNotReady(ImproperConnectionState):
|
|
pass
|
|
|
|
class BadStatusLine(HTTPException):
|
|
def __init__(self, line):
|
|
self.line = line
|
|
|
|
# for backwards compatibility
|
|
error = HTTPException
|
|
|
|
|
|
#
|
|
# snarfed from httplib.py for now...
|
|
#
|
|
def test():
|
|
"""Test this module.
|
|
|
|
The test consists of retrieving and displaying the Python
|
|
home page, along with the error code and error string returned
|
|
by the www.python.org server.
|
|
"""
|
|
|
|
import sys
|
|
import getopt
|
|
opts, args = getopt.getopt(sys.argv[1:], 'd')
|
|
dl = 0
|
|
for o, a in opts:
|
|
if o == '-d': dl = dl + 1
|
|
host = 'www.python.org'
|
|
selector = '/'
|
|
if args[0:]: host = args[0]
|
|
if args[1:]: selector = args[1]
|
|
h = HTTP()
|
|
h.set_debuglevel(dl)
|
|
h.connect(host)
|
|
h.putrequest('GET', selector)
|
|
h.endheaders()
|
|
status, reason, headers = h.getreply()
|
|
print 'status =', status
|
|
print 'reason =', reason
|
|
print
|
|
if headers:
|
|
for header in headers.headers: print header.strip()
|
|
print
|
|
print h.getfile().read()
|
|
|
|
# minimal test that code to extract host from url works
|
|
class HTTP11(HTTP):
|
|
_http_vsn = 11
|
|
_http_vsn_str = 'HTTP/1.1'
|
|
|
|
h = HTTP11('www.python.org')
|
|
h.putrequest('GET', 'http://www.python.org/~jeremy/')
|
|
h.endheaders()
|
|
h.getreply()
|
|
h.close()
|
|
|
|
if hasattr(socket, 'ssl'):
|
|
host = 'sourceforge.net'
|
|
selector = '/projects/python'
|
|
hs = HTTPS()
|
|
hs.connect(host)
|
|
hs.putrequest('GET', selector)
|
|
hs.endheaders()
|
|
status, reason, headers = hs.getreply()
|
|
print 'status =', status
|
|
print 'reason =', reason
|
|
print
|
|
if headers:
|
|
for header in headers.headers: print header.strip()
|
|
print
|
|
print hs.getfile().read()
|
|
|
|
|
|
if __name__ == '__main__':
|
|
test()
|