ssl_socket.py 文件源码

def makefile(self, *args):
        """Specific to Python socket API and required by httplib: convert
        response into a file-like object.  This implementation reads using recv
        and copies the output into a StringIO buffer to simulate a file object
        for consumption by httplib

        Nb. Ignoring optional file open mode (StringIO is generic and will
        open for read and write unless a string is passed to the constructor)
        and buffer size - httplib set a zero buffer size which results in recv
        reading nothing

        @return: file object for data returned from socket
        @rtype: cStringIO.StringO
        """
        self._makefile_refs += 1

        # Optimisation
        _buf_size = self.buf_size

        i=0
        stream = BytesIO()
        startTime = datetime.utcnow()
        try:
            dat = self.__ssl_conn.recv(_buf_size)
            while dat:
                i+=1
                stream.write(dat)
                dat = self.__ssl_conn.recv(_buf_size)

        except (SSL.ZeroReturnError, SSL.SysCallError):
            # Connection is closed - assuming here that all is well and full
            # response has been received.  httplib will catch an error in
            # incomplete content since it checks the content-length header
            # against the actual length of data received
            pass

        if log.getEffectiveLevel() <= logging.DEBUG:
            log.debug("Socket.makefile %d recv calls completed in %s", i,
                      datetime.utcnow() - startTime)

        # Make sure to rewind the buffer otherwise consumers of the content will
        # read from the end of the buffer
        stream.seek(0)

        return stream