mirror of
https://github.com/GNS3/gns3-server
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117 lines
3.1 KiB
Python
117 lines
3.1 KiB
Python
# -*- 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 multicast 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 NIOMcast(NIO):
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"""
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Dynamips Linux Ethernet NIO.
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:param hypervisor: Dynamips hypervisor instance
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:param group: multicast group to bind
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:param port: port for binding
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"""
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_instance_count = 0
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def __init__(self, hypervisor, group, port):
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# create an unique ID and name
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nio_id = NIOMcast._instance_count
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NIOMcast._instance_count += 1
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name = 'nio_mcast' + str(nio_id)
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self._group = group
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self._port = port
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self._ttl = 1 # default TTL
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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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yield from self._hypervisor.send("nio create_mcast {name} {mgroup} {mport}".format(name=self._name,
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mgroup=self._group,
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mport=self._port))
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log.info("NIO Multicast {name} created with mgroup={group}, mport={port}".format(name=self._name,
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group=self._group,
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port=self._port))
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@property
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def group(self):
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"""
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Returns the multicast group
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:returns: multicast group address
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"""
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return self._group
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@property
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def port(self):
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"""
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Returns the port
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:returns: port number
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"""
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return self._port
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@property
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def ttl(self):
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"""
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Returns the TTL associated with the multicast address.
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:returns: TTL value
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"""
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return self._ttl
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def set_ttl(self, ttl):
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"""
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Sets the TTL for the multicast address
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:param ttl: TTL value
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"""
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yield from self._hypervisor.send("nio set_mcast_ttl {name} {ttl}".format(name=self._name,
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ttl=ttl))
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self._ttl = ttl
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def __json__(self):
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return {"type": "nio_mcast",
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"mgroup": self._mgroup,
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"mport": self._mport}
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