| """HTTP/1.1 client library |
| |
| <intro stuff goes here> |
| <other stuff, too> |
| |
| HTTPConnection go through a number of "states", which defines 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> |
| """ |
| |
| import socket |
| import mimetools |
| |
| try: |
| from cStringIO import StringIO |
| except ImportError: |
| from StringIO import StringIO |
| |
| __all__ = ["HTTP", "HTTPResponse", "HTTPConnection", "HTTPSConnection", |
| "HTTPException", "NotConnected", "UnknownProtocol", |
| "UnknownTransferEncoding", "IllegalKeywordArgument", |
| "UnimplementedFileMode", "IncompleteRead", |
| "ImproperConnectionState", "CannotSendRequest", "CannotSendHeader", |
| "ResponseNotReady", "BadStatusLine", "error"] |
| |
| HTTP_PORT = 80 |
| HTTPS_PORT = 443 |
| |
| _UNKNOWN = 'UNKNOWN' |
| |
| # connection states |
| _CS_IDLE = 'Idle' |
| _CS_REQ_STARTED = 'Request-started' |
| _CS_REQ_SENT = 'Request-sent' |
| |
| |
| class HTTPResponse: |
| def __init__(self, sock, debuglevel=0): |
| self.fp = sock.makefile('rb', 0) |
| self.debuglevel = debuglevel |
| |
| self.msg = None |
| |
| # from the Status-Line of the response |
| self.version = _UNKNOWN # HTTP-Version |
| self.status = _UNKNOWN # Status-Code |
| self.reason = _UNKNOWN # Reason-Phrase |
| |
| self.chunked = _UNKNOWN # is "chunked" being used? |
| self.chunk_left = _UNKNOWN # bytes left to read in current chunk |
| self.length = _UNKNOWN # number of bytes left in response |
| self.will_close = _UNKNOWN # conn will close at end of response |
| |
| def begin(self): |
| if self.msg is not None: |
| # we've already started reading the response |
| return |
| |
| line = self.fp.readline() |
| if self.debuglevel > 0: |
| print "reply:", repr(line) |
| try: |
| [version, status, reason] = line.split(None, 2) |
| except ValueError: |
| try: |
| [version, status] = line.split(None, 1) |
| reason = "" |
| except ValueError: |
| version = "HTTP/0.9" |
| status = "200" |
| reason = "" |
| if version[:5] != 'HTTP/': |
| self.close() |
| raise BadStatusLine(line) |
| |
| # The status code is a three-digit number |
| try: |
| self.status = status = int(status) |
| if status < 100 or status > 999: |
| raise BadStatusLine(line) |
| except ValueError: |
| raise BadStatusLine(line) |
| self.reason = reason.strip() |
| |
| if version == 'HTTP/1.0': |
| self.version = 10 |
| elif version.startswith('HTTP/1.'): |
| self.version = 11 # use HTTP/1.1 code for HTTP/1.x where x>=1 |
| elif version == 'HTTP/0.9': |
| self.version = 9 |
| else: |
| raise UnknownProtocol(version) |
| |
| if self.version == 9: |
| self.msg = mimetools.Message(StringIO()) |
| return |
| |
| self.msg = mimetools.Message(self.fp, 0) |
| if self.debuglevel > 0: |
| for hdr in self.msg.headers: |
| print "header:", hdr, |
| |
| # don't let the msg keep an fp |
| self.msg.fp = None |
| |
| # are we using the chunked-style of transfer encoding? |
| tr_enc = self.msg.getheader('transfer-encoding') |
| if tr_enc: |
| if tr_enc.lower() != 'chunked': |
| raise UnknownTransferEncoding() |
| self.chunked = 1 |
| self.chunk_left = None |
| else: |
| self.chunked = 0 |
| |
| # will the connection close at the end of the response? |
| conn = self.msg.getheader('connection') |
| if conn: |
| conn = conn.lower() |
| # a "Connection: close" will always close the connection. if we |
| # don't see that and this is not HTTP/1.1, then the connection will |
| # close unless we see a Keep-Alive header. |
| self.will_close = conn.find('close') != -1 or \ |
| ( self.version != 11 and \ |
| not self.msg.getheader('keep-alive') ) |
| else: |
| # for HTTP/1.1, the connection will always remain open |
| # otherwise, it will remain open IFF we see a Keep-Alive header |
| self.will_close = self.version != 11 and \ |
| not self.msg.getheader('keep-alive') |
| |
| # do we have a Content-Length? |
| # NOTE: RFC 2616, S4.4, #3 says we ignore this if tr_enc is "chunked" |
| length = self.msg.getheader('content-length') |
| if length and not self.chunked: |
| try: |
| self.length = int(length) |
| except ValueError: |
| self.length = None |
| else: |
| self.length = None |
| |
| # does the body have a fixed length? (of zero) |
| if (status == 204 or # No Content |
| status == 304 or # Not Modified |
| 100 <= status < 200): # 1xx codes |
| self.length = 0 |
| |
| # if the connection remains open, and we aren't using chunked, and |
| # a content-length was not provided, then assume that the connection |
| # WILL close. |
| if not self.will_close and \ |
| not self.chunked and \ |
| self.length is None: |
| self.will_close = 1 |
| |
| def close(self): |
| if self.fp: |
| self.fp.close() |
| self.fp = None |
| |
| def isclosed(self): |
| # NOTE: it is possible that we will not ever call self.close(). This |
| # case occurs when will_close is TRUE, length is None, and we |
| # read up to the last byte, but NOT past it. |
| # |
| # IMPLIES: if will_close is FALSE, then self.close() will ALWAYS be |
| # called, meaning self.isclosed() is meaningful. |
| return self.fp is None |
| |
| def read(self, amt=None): |
| if self.fp is None: |
| return '' |
| |
| if self.chunked: |
| chunk_left = self.chunk_left |
| value = '' |
| while 1: |
| if chunk_left is None: |
| line = self.fp.readline() |
| i = line.find(';') |
| if i >= 0: |
| line = line[:i] # strip chunk-extensions |
| chunk_left = int(line, 16) |
| if chunk_left == 0: |
| break |
| if amt is None: |
| value = value + self._safe_read(chunk_left) |
| elif amt < chunk_left: |
| value = value + self._safe_read(amt) |
| self.chunk_left = chunk_left - amt |
| return value |
| elif amt == chunk_left: |
| value = value + self._safe_read(amt) |
| self._safe_read(2) # toss the CRLF at the end of the chunk |
| self.chunk_left = None |
| return value |
| else: |
| value = value + self._safe_read(chunk_left) |
| amt = amt - chunk_left |
| |
| # we read the whole chunk, get another |
| self._safe_read(2) # toss the CRLF at the end of the chunk |
| chunk_left = None |
| |
| # read and discard trailer up to the CRLF terminator |
| ### note: we shouldn't have any trailers! |
| while 1: |
| line = self.fp.readline() |
| if line == '\r\n': |
| break |
| |
| # we read everything; close the "file" |
| self.close() |
| |
| return value |
| |
| elif amt is None: |
| # unbounded read |
| if self.will_close: |
| s = self.fp.read() |
| else: |
| s = self._safe_read(self.length) |
| self.close() # we read everything |
| return s |
| |
| if self.length is not None: |
| if amt > self.length: |
| # clip the read to the "end of response" |
| amt = self.length |
| self.length = self.length - amt |
| |
| # we do not use _safe_read() here because this may be a .will_close |
| # connection, and the user is reading more bytes than will be provided |
| # (for example, reading in 1k chunks) |
| s = self.fp.read(amt) |
| |
| return s |
| |
| 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(amt) |
| if not chunk: |
| raise IncompleteRead(s) |
| s = s + chunk |
| amt = amt - len(chunk) |
| return s |
| |
| def getheader(self, name, default=None): |
| if self.msg is None: |
| raise ResponseNotReady() |
| return self.msg.getheader(name, default) |
| |
| |
| class HTTPConnection: |
| |
| _http_vsn = 11 |
| _http_vsn_str = 'HTTP/1.1' |
| |
| response_class = HTTPResponse |
| default_port = HTTP_PORT |
| auto_open = 1 |
| debuglevel = 0 |
| |
| def __init__(self, host, port=None): |
| self.sock = None |
| self.__response = None |
| self.__state = _CS_IDLE |
| |
| self._set_hostport(host, port) |
| |
| def _set_hostport(self, host, port): |
| if port is None: |
| i = host.find(':') |
| if i >= 0: |
| port = int(host[i+1:]) |
| host = host[:i] |
| else: |
| port = self.default_port |
| self.host = host |
| self.port = port |
| |
| def set_debuglevel(self, level): |
| self.debuglevel = level |
| |
| def connect(self): |
| """Connect to the host and port specified in __init__.""" |
| msg = "getaddrinfo returns an empty list" |
| for res in socket.getaddrinfo(self.host, self.port, 0, socket.SOCK_STREAM): |
| af, socktype, proto, canonname, sa = res |
| try: |
| self.sock = socket.socket(af, socktype, proto) |
| if self.debuglevel > 0: |
| print "connect: (%s, %s)" % (self.host, self.port) |
| self.sock.connect(sa) |
| except socket.error, msg: |
| if self.debuglevel > 0: |
| print 'connect fail:', (self.host, self.port) |
| self.sock.close() |
| self.sock = None |
| continue |
| break |
| if not self.sock: |
| raise socket.error, msg |
| |
| def close(self): |
| """Close the connection to the HTTP server.""" |
| if self.sock: |
| self.sock.close() # close it manually... there may be other refs |
| self.sock = None |
| if self.__response: |
| self.__response.close() |
| self.__response = None |
| self.__state = _CS_IDLE |
| |
| def send(self, str): |
| """Send `str' to the server.""" |
| if self.sock is None: |
| if self.auto_open: |
| self.connect() |
| else: |
| raise NotConnected() |
| |
| # send the data to the server. if we get a broken pipe, then close |
| # the socket. we want to reconnect when somebody tries to send again. |
| # |
| # NOTE: we DO propagate the error, though, because we cannot simply |
| # ignore the error... the caller will know if they can retry. |
| if self.debuglevel > 0: |
| print "send:", repr(str) |
| try: |
| self.sock.send(str) |
| except socket.error, v: |
| if v[0] == 32: # Broken pipe |
| self.close() |
| raise |
| |
| def putrequest(self, method, url): |
| """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'. |
| """ |
| |
| # check if a prior response has been completed |
| if self.__response and self.__response.isclosed(): |
| self.__response = None |
| |
| # |
| # in certain cases, we cannot issue another request on this connection. |
| # this occurs when: |
| # 1) we are in the process of sending a request. (_CS_REQ_STARTED) |
| # 2) a response to a previous request has signalled that it is going |
| # to close the connection upon completion. |
| # 3) the headers for the previous response have not been read, thus |
| # we cannot determine whether point (2) is true. (_CS_REQ_SENT) |
| # |
| # if there is no prior response, then we can request at will. |
| # |
| # if point (2) is true, then we will have passed the socket to the |
| # response (effectively meaning, "there is no prior response"), and |
| # will open a new one when a new request is made. |
| # |
| # Note: if a prior response exists, then we *can* start a new request. |
| # We are not allowed to begin fetching the response to this new |
| # request, however, until that prior response is complete. |
| # |
| if self.__state == _CS_IDLE: |
| self.__state = _CS_REQ_STARTED |
| else: |
| raise CannotSendRequest() |
| |
| if not url: |
| url = '/' |
| str = '%s %s %s\r\n' % (method, url, self._http_vsn_str) |
| |
| try: |
| self.send(str) |
| 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 (the socket was closed; this will reopen) |
| self.send(str) |
| |
| if self._http_vsn == 11: |
| # Issue some standard headers for better HTTP/1.1 compliance |
| |
| # this header is issued *only* for HTTP/1.1 connections. more |
| # specifically, this means it is only issued when the client uses |
| # the new HTTPConnection() class. backwards-compat clients will |
| # be using HTTP/1.0 and those clients may be issuing this header |
| # themselves. we should NOT issue it twice; some web servers (such |
| # as Apache) barf when they see two Host: headers |
| |
| # if we need a non-standard port,include it in the header |
| if self.port == HTTP_PORT: |
| self.putheader('Host', self.host) |
| else: |
| self.putheader('Host', "%s:%s" % (self.host, self.port)) |
| |
| # note: we are assuming that clients will not attempt to set these |
| # headers since *this* library must deal with the |
| # consequences. this also means that when the supporting |
| # libraries are updated to recognize other forms, then this |
| # code should be changed (removed or updated). |
| |
| # we only want a Content-Encoding of "identity" since we don't |
| # support encodings such as x-gzip or x-deflate. |
| self.putheader('Accept-Encoding', 'identity') |
| |
| # we can accept "chunked" Transfer-Encodings, but no others |
| # NOTE: no TE header implies *only* "chunked" |
| #self.putheader('TE', 'chunked') |
| |
| # if TE is supplied in the header, then it must appear in a |
| # Connection header. |
| #self.putheader('Connection', 'TE') |
| |
| else: |
| # For HTTP/1.0, the server will assume "not chunked" |
| pass |
| |
| def putheader(self, header, value): |
| """Send a request header line to the server. |
| |
| For example: h.putheader('Accept', 'text/html') |
| """ |
| if self.__state != _CS_REQ_STARTED: |
| raise CannotSendHeader() |
| |
| str = '%s: %s\r\n' % (header, value) |
| self.send(str) |
| |
| def endheaders(self): |
| """Indicate that the last header line has been sent to the server.""" |
| |
| if self.__state == _CS_REQ_STARTED: |
| self.__state = _CS_REQ_SENT |
| else: |
| raise CannotSendHeader() |
| |
| self.send('\r\n') |
| |
| def request(self, method, url, body=None, headers={}): |
| """Send a complete request to the server.""" |
| |
| try: |
| 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): |
| 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, msg: |
| break |
| if buf == '': |
| break |
| msgbuf.append(buf) |
| return StringIO("".join(msgbuf)) |
| |
| def send(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 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() |
| |
| 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() |