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