gns3-server/gns3server/modules/dynamips/nios/nio_udp_auto.py

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2013 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Interface for automatic UDP NIOs.
"""
from .nio import NIO
import logging
log = logging.getLogger(__name__)
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class NIO_UDP_auto(NIO):
"""
Dynamips auto UDP NIO.
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:param hypervisor: Dynamips hypervisor instance
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:param laddr: local address
:param lport_start: start local port range
:param lport_end: end local port range
"""
_instance_count = 0
def __init__(self, hypervisor, laddr, lport_start, lport_end):
NIO.__init__(self, hypervisor)
# create an unique ID
self._id = NIO_UDP_auto._instance_count
NIO_UDP_auto._instance_count += 1
self._name = 'nio_udp_auto' + str(self._id)
self._laddr = laddr
self._lport = int(self._hypervisor.send("nio create_udp_auto {name} {laddr} {lport_start} {lport_end}".format(name=self._name,
laddr=laddr,
lport_start=lport_start,
lport_end=lport_end))[0])
log.info("NIO UDP AUTO {name} created with laddr={laddr}, lport_start={start}, lport_end={end}".format(name=self._name,
laddr=laddr,
start=lport_start,
end=lport_end))
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self._raddr = None
self._rport = None
@classmethod
def reset(cls):
"""
Reset the instance count.
"""
cls._instance_count = 0
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@property
def laddr(self):
"""
Returns the local address
:returns: local address
"""
return self._laddr
@property
def lport(self):
"""
Returns the local port
:returns: local port number
"""
return self._lport
@property
def raddr(self):
"""
Returns the remote address
:returns: remote address
"""
return self._raddr
@property
def rport(self):
"""
Returns the remote port
:returns: remote port number
"""
return self._rport
def connect(self, raddr, rport):
"""
Connects this NIO to a remote socket
:param raddr: remote address
:param rport: remote port number
"""
self._hypervisor.send("nio connect_udp_auto {name} {raddr} {rport}".format(name=self._name,
raddr=raddr,
rport=rport))
self._raddr = raddr
self._rport = rport
log.info("NIO UDP AUTO {name} connected to {raddr}:{rport}".format(name=self._name,
raddr=raddr,
rport=rport))