Freelog 125/Freelog_MarsAvril2015_No125.iso/Musique/Quod Libet/quodlibet-3.3.0-installer.exe/bin/httplib.pyc

Python Compiled Bytecode | 2014-12-31 | 34KB | 1,163 lines

# Source Generated with Decompyle++
# File: in.pyc (Python 2.7)

'''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
      |
      | 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           <response_class>
Req-started-unread-response    _CS_REQ_STARTED    <response_class>
Req-sent-unread-response       _CS_REQ_SENT       <response_class>
'''
from array import array
import os
import socket
from sys import py3kwarning
from urlparse import urlsplit
import warnings
with warnings.catch_warnings():
    if py3kwarning:
        warnings.filterwarnings('ignore', '.*mimetools has been removed', DeprecationWarning)
    import mimetools

try:
    from cStringIO import StringIO
except ImportError:
    from StringIO import StringIO

__all__ = [
    'HTTP',
    'HTTPResponse',
    'HTTPConnection',
    'HTTPException',
    'NotConnected',
    'UnknownProtocol',
    'UnknownTransferEncoding',
    'UnimplementedFileMode',
    'IncompleteRead',
    'InvalidURL',
    'ImproperConnectionState',
    'CannotSendRequest',
    'CannotSendHeader',
    'ResponseNotReady',
    'BadStatusLine',
    'error',
    'responses']
HTTP_PORT = 80
HTTPS_PORT = 443
_UNKNOWN = 'UNKNOWN'
_CS_IDLE = 'Idle'
_CS_REQ_STARTED = 'Request-started'
_CS_REQ_SENT = 'Request-sent'
CONTINUE = 100
SWITCHING_PROTOCOLS = 101
PROCESSING = 102
OK = 200
CREATED = 201
ACCEPTED = 202
NON_AUTHORITATIVE_INFORMATION = 203
NO_CONTENT = 204
RESET_CONTENT = 205
PARTIAL_CONTENT = 206
MULTI_STATUS = 207
IM_USED = 226
MULTIPLE_CHOICES = 300
MOVED_PERMANENTLY = 301
FOUND = 302
SEE_OTHER = 303
NOT_MODIFIED = 304
USE_PROXY = 305
TEMPORARY_REDIRECT = 307
BAD_REQUEST = 400
UNAUTHORIZED = 401
PAYMENT_REQUIRED = 402
FORBIDDEN = 403
NOT_FOUND = 404
METHOD_NOT_ALLOWED = 405
NOT_ACCEPTABLE = 406
PROXY_AUTHENTICATION_REQUIRED = 407
REQUEST_TIMEOUT = 408
CONFLICT = 409
GONE = 410
LENGTH_REQUIRED = 411
PRECONDITION_FAILED = 412
REQUEST_ENTITY_TOO_LARGE = 413
REQUEST_URI_TOO_LONG = 414
UNSUPPORTED_MEDIA_TYPE = 415
REQUESTED_RANGE_NOT_SATISFIABLE = 416
EXPECTATION_FAILED = 417
UNPROCESSABLE_ENTITY = 422
LOCKED = 423
FAILED_DEPENDENCY = 424
UPGRADE_REQUIRED = 426
INTERNAL_SERVER_ERROR = 500
NOT_IMPLEMENTED = 501
BAD_GATEWAY = 502
SERVICE_UNAVAILABLE = 503
GATEWAY_TIMEOUT = 504
HTTP_VERSION_NOT_SUPPORTED = 505
INSUFFICIENT_STORAGE = 507
NOT_EXTENDED = 510
responses = {
    100: 'Continue',
    101: 'Switching Protocols',
    200: 'OK',
    201: 'Created',
    202: 'Accepted',
    203: 'Non-Authoritative Information',
    204: 'No Content',
    205: 'Reset Content',
    206: 'Partial Content',
    300: 'Multiple Choices',
    301: 'Moved Permanently',
    302: 'Found',
    303: 'See Other',
    304: 'Not Modified',
    305: 'Use Proxy',
    306: '(Unused)',
    307: 'Temporary Redirect',
    400: 'Bad Request',
    401: 'Unauthorized',
    402: 'Payment Required',
    403: 'Forbidden',
    404: 'Not Found',
    405: 'Method Not Allowed',
    406: 'Not Acceptable',
    407: 'Proxy Authentication Required',
    408: 'Request Timeout',
    409: 'Conflict',
    410: 'Gone',
    411: 'Length Required',
    412: 'Precondition Failed',
    413: 'Request Entity Too Large',
    414: 'Request-URI Too Long',
    415: 'Unsupported Media Type',
    416: 'Requested Range Not Satisfiable',
    417: 'Expectation Failed',
    500: 'Internal Server Error',
    501: 'Not Implemented',
    502: 'Bad Gateway',
    503: 'Service Unavailable',
    504: 'Gateway Timeout',
    505: 'HTTP Version Not Supported' }
MAXAMOUNT = 1048576
_MAXLINE = 65536

class HTTPMessage(mimetools.Message):

    def addheader(self, key, value):
        '''Add header for field key handling repeats.'''
        prev = self.dict.get(key)
        if prev is None:
            self.dict[key] = value
        else:
            combined = ', '.join((prev, value))
            self.dict[key] = combined


    def addcontinue(self, key, more):
        '''Add more field data from a continuation line.'''
        prev = self.dict[key]
        self.dict[key] = prev + '\n ' + more


    def readheaders(self):
        '''Read header lines.

        Read header lines up to the entirely blank line that terminates them.
        The (normally blank) line that ends the headers is skipped, but not
        included in the returned list.  If a non-header line ends the headers,
        (which is an error), an attempt is made to backspace over it; it is
        never included in the returned list.

        The variable self.status is set to the empty string if all went well,
        otherwise it is an error message.  The variable self.headers is a
        completely uninterpreted list of lines contained in the header (so
        printing them will reproduce the header exactly as it appears in the
        file).

        If multiple header fields with the same name occur, they are combined
        according to the rules in RFC 2616 sec 4.2:

        Appending each subsequent field-value to the first, each separated
        by a comma. The order in which header fields with the same field-name
        are received is significant to the interpretation of the combined
        field value.
        '''
        self.dict = { }
        self.unixfrom = ''
        self.headers = hlist = []
        self.status = ''
        headerseen = ''
        firstline = 1
        startofline = None
        unread = None
        tell = None
        if hasattr(self.fp, 'unread'):
            unread = self.fp.unread
        elif self.seekable:
            tell = self.fp.tell
        while True:
            if tell:

                try:
                    startofline = tell()
                except IOError:
                    startofline = None
                    tell = None
                    self.seekable = 0


            line = self.fp.readline(_MAXLINE + 1)
            if len(line) > _MAXLINE:
                raise LineTooLong('header line')
            if not line:
                self.status = 'EOF in headers'
                break
            if firstline and line.startswith('From '):
                self.unixfrom = self.unixfrom + line
                continue
            firstline = 0
            if headerseen and line[0] in ' \t':
                hlist.append(line)
                self.addcontinue(headerseen, line.strip())
                continue
            elif self.iscomment(line):
                continue
            elif self.islast(line):
                break
            headerseen = self.isheader(line)
            if headerseen:
                hlist.append(line)
                self.addheader(headerseen, line[len(headerseen) + 1:].strip())
                continue
                continue
            if not self.dict:
                self.status = 'No headers'
            else:
                self.status = 'Non-header line where header expected'
            if unread:
                unread(line)
            elif tell:
                self.fp.seek(startofline)
            else:
                self.status = self.status + '; bad seek'
            break



class HTTPResponse:

    def __init__(self, sock, debuglevel = 0, strict = 0, method = None, buffering = False):
        if buffering:
            self.fp = sock.makefile('rb')
        else:
            self.fp = sock.makefile('rb', 0)
        self.debuglevel = debuglevel
        self.strict = strict
        self._method = method
        self.msg = None
        self.version = _UNKNOWN
        self.status = _UNKNOWN
        self.reason = _UNKNOWN
        self.chunked = _UNKNOWN
        self.chunk_left = _UNKNOWN
        self.length = _UNKNOWN
        self.will_close = _UNKNOWN


    def _read_status(self):
        line = self.fp.readline(_MAXLINE + 1)
        if len(line) > _MAXLINE:
            raise LineTooLong('header line')
        if self.debuglevel > 0:
            print 'reply:', repr(line)
        if not line:
            raise BadStatusLine(line)

        try:
            (version, status, reason) = line.split(None, 2)
        except ValueError:

            try:
                (version, status) = line.split(None, 1)
                reason = ''
            except ValueError:
                version = ''



        if not version.startswith('HTTP/'):
            if self.strict:
                self.close()
                raise BadStatusLine(line)
            self.fp = LineAndFileWrapper(line, self.fp)
            return ('HTTP/0.9', 200, '')

        try:
            status = int(status)
            if status < 100 or status > 999:
                raise BadStatusLine(line)
        except ValueError:
            raise BadStatusLine(line)

        return (version, status, reason)


    def begin(self):
        if self.msg is not None:
            return None
        if True:
            (version, status, reason) = self._read_status()
            if status != CONTINUE:
                break
            while True:
                skip = self.fp.readline(_MAXLINE + 1)
                if len(skip) > _MAXLINE:
                    raise LineTooLong('header line')
                skip = skip.strip()
                if not skip:
                    break
                if self.debuglevel > 0:
                    print 'header:', skip
                    continue
            self.status = status
            self.reason = reason.strip()
            if version == 'HTTP/1.0':
                self.version = 10
            elif version.startswith('HTTP/1.'):
                self.version = 11
            elif version == 'HTTP/0.9':
                self.version = 9
            else:
                raise UnknownProtocol(version)
            if None.version == 9:
                self.length = None
                self.chunked = 0
                self.will_close = 1
                self.msg = HTTPMessage(StringIO())
                return None
            self.msg = None(self.fp, 0)
            if self.debuglevel > 0:
                for hdr in self.msg.headers:
                    print 'header:', hdr,

            self.msg.fp = None
            tr_enc = self.msg.getheader('transfer-encoding')
            if tr_enc and tr_enc.lower() == 'chunked':
                self.chunked = 1
                self.chunk_left = None
            else:
                self.chunked = 0
        self.will_close = self._check_close()
        length = self.msg.getheader('content-length')
        if length and not (self.chunked):

            try:
                self.length = int(length)
            except ValueError:
                self.length = None

            if self.length < 0:
                self.length = None

        else:
            self.length = None
        if not status == NO_CONTENT and status == NOT_MODIFIED:
            if status <= status:
                pass
            elif status < 200 or self._method == 'HEAD':
                self.length = 0
            if not (self.will_close) and not (self.chunked) and self.length is None:
                self.will_close = 1
            return None


    def _check_close(self):
        conn = self.msg.getheader('connection')
        if self.version == 11:
            conn = self.msg.getheader('connection')
            if conn and 'close' in conn.lower():
                return True
            return None
        if None.msg.getheader('keep-alive'):
            return False
        if None and 'keep-alive' in conn.lower():
            return False
        pconn = None.msg.getheader('proxy-connection')
        if pconn and 'keep-alive' in pconn.lower():
            return False


    def close(self):
        if self.fp:
            self.fp.close()
            self.fp = None


    def isclosed(self):
        return self.fp is None


    def read(self, amt = None):
        if self.fp is None:
            return ''
        if None._method == 'HEAD':
            self.close()
            return ''
        if None.chunked:
            return self._read_chunked(amt)
        if None is None:
            if self.length is None:
                s = self.fp.read()
            else:

                try:
                    s = self._safe_read(self.length)
                except IncompleteRead:
                    self.close()
                    raise

                self.length = 0
            self.close()
            return s
        if None.length is not None and amt > self.length:
            amt = self.length

        s = self.fp.read(amt)
        if not s:
            self.close()
        if self.length is not None:
            self.length -= len(s)
            if not self.length:
                self.close()

        return s


    def _read_chunked(self, amt):
        if not self.chunked != _UNKNOWN:
            raise AssertionError
        chunk_left = None.chunk_left
        value = []
        while True:
            if chunk_left is None:
                line = self.fp.readline(_MAXLINE + 1)
                if len(line) > _MAXLINE:
                    raise LineTooLong('chunk size')
                i = line.find(';')
                if i >= 0:
                    line = line[:i]

                try:
                    chunk_left = int(line, 16)
                except ValueError:
                    self.close()
                    raise IncompleteRead(''.join(value))

                if chunk_left == 0:
                    break

            if amt is None:
                value.append(self._safe_read(chunk_left))
            elif amt < chunk_left:
                value.append(self._safe_read(amt))
                self.chunk_left = chunk_left - amt
                return ''.join(value)
            if amt == chunk_left:
                value.append(self._safe_read(amt))
                self._safe_read(2)
                self.chunk_left = None
                return ''.join(value)
            None.append(self._safe_read(chunk_left))
            amt -= chunk_left
            self._safe_read(2)
            chunk_left = None
        while True:
            line = self.fp.readline(_MAXLINE + 1)
            if len(line) > _MAXLINE:
                raise LineTooLong('trailer line')
            if not line:
                break
            if line == '\r\n':
                break
                continue
            self.close()
            return ''.join(value)


    def _safe_read(self, amt):
        '''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 <amt> 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.
        '''
        s = []
        while amt > 0:
            chunk = self.fp.read(min(amt, MAXAMOUNT))
            if not chunk:
                raise IncompleteRead(''.join(s), amt)
            s.append(chunk)
            amt -= len(chunk)
        return ''.join(s)


    def fileno(self):
        return self.fp.fileno()


    def getheader(self, name, default = None):
        if self.msg is None:
            raise ResponseNotReady()
        return self.msg.getheader(name, default)


    def getheaders(self):
        '''Return list of (header, value) tuples.'''
        if self.msg is None:
            raise ResponseNotReady()
        return self.msg.items()



class HTTPConnection:
    _http_vsn = 11
    _http_vsn_str = 'HTTP/1.1'
    response_class = HTTPResponse
    default_port = HTTP_PORT
    auto_open = 1
    debuglevel = 0
    strict = 0

    def __init__(self, host, port = None, strict = None, timeout = socket._GLOBAL_DEFAULT_TIMEOUT, source_address = None):
        self.timeout = timeout
        self.source_address = source_address
        self.sock = None
        self._buffer = []
        self._HTTPConnection__response = None
        self._HTTPConnection__state = _CS_IDLE
        self._method = None
        self._tunnel_host = None
        self._tunnel_port = None
        self._tunnel_headers = { }
        self._set_hostport(host, port)
        if strict is not None:
            self.strict = strict


    def set_tunnel(self, host, port = None, headers = None):
        ''' Sets up the host and the port for the HTTP CONNECT Tunnelling.

        The headers argument should be a mapping of extra HTTP headers
        to send with the CONNECT request.
        '''
        self._tunnel_host = host
        self._tunnel_port = port
        if headers:
            self._tunnel_headers = headers
        else:
            self._tunnel_headers.clear()


    def _set_hostport(self, host, port):
        if port is None:
            i = host.rfind(':')
            j = host.rfind(']')
            if i > j:

                try:
                    port = int(host[i + 1:])
                except ValueError:
                    if host[i + 1:] == '':
                        port = self.default_port
                    else:
                        raise InvalidURL("nonnumeric port: '%s'" % host[i + 1:])

                host = host[:i]
            else:
                port = self.default_port
            if host and host[0] == '[' and host[-1] == ']':
                host = host[1:-1]

        self.host = host
        self.port = port


    def set_debuglevel(self, level):
        self.debuglevel = level


    def _tunnel(self):
        self._set_hostport(self._tunnel_host, self._tunnel_port)
        self.send('CONNECT %s:%d HTTP/1.0\r\n' % (self.host, self.port))
        for header, value in self._tunnel_headers.iteritems():
            self.send('%s: %s\r\n' % (header, value))

        self.send('\r\n')
        response = self.response_class(self.sock, strict = self.strict, method = self._method)
        (version, code, message) = response._read_status()
        if code != 200:
            self.close()
            raise socket.error('Tunnel connection failed: %d %s' % (code, message.strip()))
        while True:
            line = response.fp.readline(_MAXLINE + 1)
            if len(line) > _MAXLINE:
                raise LineTooLong('header line')
            if not line:
                break
            if line == '\r\n':
                break
                continue
            return None


    def connect(self):
        '''Connect to the host and port specified in __init__.'''
        self.sock = socket.create_connection((self.host, self.port), self.timeout, self.source_address)
        if self._tunnel_host:
            self._tunnel()


    def close(self):
        '''Close the connection to the HTTP server.'''
        if self.sock:
            self.sock.close()
            self.sock = None
        if self._HTTPConnection__response:
            self._HTTPConnection__response.close()
            self._HTTPConnection__response = None
        self._HTTPConnection__state = _CS_IDLE


    def send(self, data):
        """Send `data' to the server."""
        if self.sock is None:
            if self.auto_open:
                self.connect()
            else:
                raise NotConnected()
        if self.debuglevel > 0:
            print 'send:', repr(data)
        blocksize = 8192
        if hasattr(data, 'read') and not isinstance(data, array):
            if self.debuglevel > 0:
                print 'sendIng a read()able'
            datablock = data.read(blocksize)
            while datablock:
                self.sock.sendall(datablock)
                datablock = data.read(blocksize)
        else:
            self.sock.sendall(data)


    def _output(self, s):
        '''Add a line of output to the current request buffer.

        Assumes that the line does *not* end with \\r\\n.
        '''
        self._buffer.append(s)


    def _send_output(self, message_body = None):
        '''Send the currently buffered request and clear the buffer.

        Appends an extra \\r\\n to the buffer.
        A message_body may be specified, to be appended to the request.
        '''
        self._buffer.extend(('', ''))
        msg = '\r\n'.join(self._buffer)
        del self._buffer[:]
        if isinstance(message_body, str):
            msg += message_body
            message_body = None
        self.send(msg)
        if message_body is not None:
            self.send(message_body)


    def putrequest(self, method, url, skip_host = 0, skip_accept_encoding = 0):
        """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
        """
        if self._HTTPConnection__response and self._HTTPConnection__response.isclosed():
            self._HTTPConnection__response = None
        if self._HTTPConnection__state == _CS_IDLE:
            self._HTTPConnection__state = _CS_REQ_STARTED
        else:
            raise CannotSendRequest()
        self._method = None
        if not url:
            url = '/'
        hdr = '%s %s %s' % (method, url, self._http_vsn_str)
        self._output(hdr)
        if self._http_vsn == 11:
            if not skip_host:
                netloc = ''
                if url.startswith('http'):
                    (nil, netloc, nil, nil, nil) = urlsplit(url)
                if netloc:

                    try:
                        netloc_enc = netloc.encode('ascii')
                    except UnicodeEncodeError:
                        netloc_enc = netloc.encode('idna')

                    self.putheader('Host', netloc_enc)
                else:

                    try:
                        host_enc = self.host.encode('ascii')
                    except UnicodeEncodeError:
                        host_enc = self.host.encode('idna')

                    if host_enc.find(':') >= 0:
                        host_enc = '[' + host_enc + ']'
                    if self.port == self.default_port:
                        self.putheader('Host', host_enc)
                    else:
                        self.putheader('Host', '%s:%s' % (host_enc, self.port))
            if not skip_accept_encoding:
                self.putheader('Accept-Encoding', 'identity')



    def putheader(self, header, *values):
        """Send a request header line to the server.

        For example: h.putheader('Accept', 'text/html')
        """
        if self._HTTPConnection__state != _CS_REQ_STARTED:
            raise CannotSendHeader()
        hdr = '%s: %s' % (header, '\r\n\t'.join([ str(v) for v in values ]))
        self._output(hdr)


    def endheaders(self, message_body = None):
        '''Indicate that the last header line has been sent to the server.

        This method sends the request to the server.  The optional
        message_body argument can be used to pass a message body
        associated with the request.  The message body will be sent in
        the same packet as the message headers if it is string, otherwise it is
        sent as a separate packet.
        '''
        if self._HTTPConnection__state == _CS_REQ_STARTED:
            self._HTTPConnection__state = _CS_REQ_SENT
        else:
            raise CannotSendHeader()
        None._send_output(message_body)


    def request(self, method, url, body = None, headers = { }):
        '''Send a complete request to the server.'''
        self._send_request(method, url, body, headers)


    def _set_content_length(self, body):
        thelen = None

        try:
            thelen = str(len(body))
        except TypeError:
            te = None

            try:
                thelen = str(os.fstat(body.fileno()).st_size)
            except (AttributeError, OSError):
                if self.debuglevel > 0:
                    print 'Cannot stat!!'




        if thelen is not None:
            self.putheader('Content-Length', thelen)


    def _send_request(self, method, url, body, headers):
        header_names = dict.fromkeys([ k.lower() for k in headers ])
        skips = { }
        if 'host' in header_names:
            skips['skip_host'] = 1
        if 'accept-encoding' in header_names:
            skips['skip_accept_encoding'] = 1
        self.putrequest(method, url, **skips)
        if body is not None and 'content-length' not in header_names:
            self._set_content_length(body)
        for hdr, value in headers.iteritems():
            self.putheader(hdr, value)

        self.endheaders(body)


    def getresponse(self, buffering = False):
        '''Get the response from the server.'''
        if self._HTTPConnection__response and self._HTTPConnection__response.isclosed():
            self._HTTPConnection__response = None
        if self._HTTPConnection__state != _CS_REQ_SENT or self._HTTPConnection__response:
            raise ResponseNotReady()
        args = (self.sock,)
        kwds = {
            'strict': self.strict,
            'method': self._method }
        if self.debuglevel > 0:
            args += (self.debuglevel,)
        if buffering:
            kwds['buffering'] = True
        response = self.response_class(*args, **kwds)
        response.begin()
        if not response.will_close != _UNKNOWN:
            raise AssertionError
        self._HTTPConnection__state = None
        if response.will_close:
            self.close()
        else:
            self._HTTPConnection__response = response
        return response



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, strict = None):
        '''Provide a default host, since the superclass requires one.'''
        if port == 0:
            port = None
        self._setup(self._connection_class(host, port, strict))


    def _setup(self, conn):
        self._conn = conn
        self.send = conn.send
        self.putrequest = conn.putrequest
        self.putheader = conn.putheader
        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 getreply(self, buffering = False):
        '''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:
            if not buffering:
                response = self._conn.getresponse()
            else:
                response = self._conn.getresponse(buffering)
        except BadStatusLine:
            e = None
            self.file = self._conn.sock.makefile('rb', 0)
            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()
        self.file = None



try:
    import ssl
except ImportError:
    pass


class HTTPSConnection(HTTPConnection):
    '''This class allows communication via SSL.'''
    default_port = HTTPS_PORT

    def __init__(self, host, port = None, key_file = None, cert_file = None, strict = None, timeout = socket._GLOBAL_DEFAULT_TIMEOUT, source_address = None):
        HTTPConnection.__init__(self, host, port, strict, timeout, source_address)
        self.key_file = key_file
        self.cert_file = cert_file


    def connect(self):
        '''Connect to a host on a given (SSL) port.'''
        sock = socket.create_connection((self.host, self.port), self.timeout, self.source_address)
        if self._tunnel_host:
            self.sock = sock
            self._tunnel()
        self.sock = ssl.wrap_socket(sock, self.key_file, self.cert_file)


__all__.append('HTTPSConnection')

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, key_file = None, cert_file = None, strict = None):
        if port == 0:
            port = None
        self._setup(self._connection_class(host, port, key_file, cert_file, strict))
        self.key_file = key_file
        self.cert_file = cert_file



def FakeSocket(sock, sslobj):
    warnings.warn("FakeSocket is deprecated, and won't be in 3.x.  " + 'Use the result of ssl.wrap_socket() directly instead.', DeprecationWarning, stacklevel = 2)
    return sslobj


class HTTPException(Exception):
    pass


class NotConnected(HTTPException):
    pass


class InvalidURL(HTTPException):
    pass


class UnknownProtocol(HTTPException):

    def __init__(self, version):
        self.args = (version,)
        self.version = version



class UnknownTransferEncoding(HTTPException):
    pass


class UnimplementedFileMode(HTTPException):
    pass


class IncompleteRead(HTTPException):

    def __init__(self, partial, expected = None):
        self.args = (partial,)
        self.partial = partial
        self.expected = expected


    def __repr__(self):
        if self.expected is not None:
            e = ', %i more expected' % self.expected
        else:
            e = ''
        return 'IncompleteRead(%i bytes read%s)' % (len(self.partial), e)


    def __str__(self):
        return repr(self)



class ImproperConnectionState(HTTPException):
    pass


class CannotSendRequest(ImproperConnectionState):
    pass


class CannotSendHeader(ImproperConnectionState):
    pass


class ResponseNotReady(ImproperConnectionState):
    pass


class BadStatusLine(HTTPException):

    def __init__(self, line):
        if not line:
            line = repr(line)
        self.args = (line,)
        self.line = line



class LineTooLong(HTTPException):

    def __init__(self, line_type):
        HTTPException.__init__(self, 'got more than %d bytes when reading %s' % (_MAXLINE, line_type))


error = HTTPException

class LineAndFileWrapper:
    '''A limited file-like object for HTTP/0.9 responses.'''

    def __init__(self, line, file):
        self._line = line
        self._file = file
        self._line_consumed = 0
        self._line_offset = 0
        self._line_left = len(line)


    def __getattr__(self, attr):
        return getattr(self._file, attr)


    def _done(self):
        self._line_consumed = 1
        self.read = self._file.read
        self.readline = self._file.readline
        self.readlines = self._file.readlines


    def read(self, amt = None):
        if self._line_consumed:
            return self._file.read(amt)
        if not None._line_left:
            raise AssertionError
        if None is None or amt > self._line_left:
            s = self._line[self._line_offset:]
            self._done()
            if amt is None:
                return s + self._file.read()
            return None + self._file.read(amt - len(s))
        if not amt <= self._line_left:
            raise AssertionError
        i = None._line_offset
        j = i + amt
        s = self._line[i:j]
        self._line_offset = j
        self._line_left -= amt
        if self._line_left == 0:
            self._done()
        return s


    def readline(self):
        if self._line_consumed:
            return self._file.readline()
        if not None._line_left:
            raise AssertionError
        s = None._line[self._line_offset:]
        self._done()
        return s


    def readlines(self, size = None):
        if self._line_consumed:
            return self._file.readlines(size)
        if not None._line_left:
            raise AssertionError
        L = [
            None._line[self._line_offset:]]
        self._done()
        if size is None:
            return L + self._file.readlines()
        return None + self._file.readlines(size)