ZeroTierOne/node/OutboundMulticast.cpp

65 lines
2.1 KiB
C++

/*
* ZeroTier One - Global Peer to Peer Ethernet
* Copyright (C) 2011-2014 ZeroTier Networks LLC
*
* 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/>.
*
* --
*
* ZeroTier may be used and distributed under the terms of the GPLv3, which
* are available at: http://www.gnu.org/licenses/gpl-3.0.html
*
* If you would like to embed ZeroTier into a commercial application or
* redistribute it in a modified binary form, please contact ZeroTier Networks
* LLC. Start here: http://www.zerotier.com/
*/
#include "Constants.hpp"
#include "OutboundMulticast.hpp"
#include "Switch.hpp"
#include "CertificateOfMembership.hpp"
namespace ZeroTier {
void OutboundMulticast::init(uint64_t timestamp,const Address &self,uint64_t nwid,const CertificateOfMembership *com,unsigned int gatherLimit,const MAC &src,const MulticastGroup &dest,unsigned int etherType,const void *payload,unsigned int len)
{
_timestamp = timestamp;
_nwid = nwid;
_source = src;
_destination = dest;
_etherType = etherType;
_packet.setSource(self);
_packet.setVerb(Packet::VERB_MULTICAST_FRAME);
_packet.append((uint64_t)nwid);
_packet.append((uint8_t)((com) ? 0x01 : 0x00));
_packet.append((uint32_t)gatherLimit); // gather limit -- set before send, start with 0
if (com) com->serialize(_packet);
_packet.append((uint32_t)dest.adi());
dest.mac().appendTo(_packet);
src.appendTo(_packet);
_packet.append((uint16_t)etherType);
_packet.append(payload,len);
_packet.compress();
}
void OutboundMulticast::sendOnly(Switch &sw,const Address &toAddr)
{
sw.send(Packet(_packet,toAddr),true);
}
} // namespace ZeroTier