controller.py 文件源码

def active_connect( self ):
        """
        Actively connect to a switch IP addr
        """
        try:
            self.logger.info( "Trying active connection to %s" % self.switch )
            soc = socket.socket( socket.AF_INET, socket.SOCK_STREAM )
            soc.connect( (self.switch, self.port) )
            self.logger.info( "Connected to " + self.switch + " on " +
                              str( self.port ) )
            soc.setsockopt( socket.IPPROTO_TCP, socket.TCP_NODELAY, True )
            self.switch_addr = (self.switch, self.port)
            return soc
        except (StandardError, socket.error), e:
            self.logger.error( "Could not connect to %s at %d:: %s" %
                               (self.switch, self.port, str( e )) )
        return None