void IPNDAgent::listen(const ibrcommon::vinterface &iface) throw ()
{
// create sockets for all addresses on the interface
std::list<ibrcommon::vaddress> addrs = iface.getAddresses();
for (std::list<ibrcommon::vaddress>::iterator iter = addrs.begin(); iter != addrs.end(); ++iter) {
ibrcommon::vaddress &addr = (*iter);
try {
// handle the addresses according to their family
switch (addr.family()) {
case AF_INET:
case AF_INET6:
{
ibrcommon::udpsocket *sock = new ibrcommon::udpsocket(addr);
if (_send_socket_state) sock->up();
_send_socket.add(sock, iface);
break;
}
default:
break;
}
} catch (const ibrcommon::vaddress::address_exception &ex) {
IBRCOMMON_LOGGER_TAG(IPNDAgent::TAG, warning) << ex.what() << IBRCOMMON_LOGGER_ENDL;
} catch (const ibrcommon::socket_exception &ex) {
IBRCOMMON_LOGGER_TAG(IPNDAgent::TAG, warning) << ex.what() << IBRCOMMON_LOGGER_ENDL;
}
}
}
void IPNDAgent::join(const ibrcommon::vinterface &iface) throw ()
{
// register as discovery handler for this interface
dtn::core::BundleCore::getInstance().getDiscoveryAgent().registerService(iface, this);
// do not create sockets for any interface
if (!iface.isAny()) {
// subscribe to NetLink events on our interfaces
ibrcommon::LinkManager::getInstance().addEventListener(iface, this);
/**
* create sockets for each address on the interface
*/
const std::list<ibrcommon::vaddress> addrs = iface.getAddresses();
for (std::list<ibrcommon::vaddress>::const_iterator it = addrs.begin(); it != addrs.end(); ++it)
{
const ibrcommon::vaddress addr = (*it);
// join to all multicast addresses on this interface
join(iface, addr);
}
}
/**
* subscribe to multicast address on this interface using the sockets bound to any address
*/
const ibrcommon::vinterface any_iface(ibrcommon::vinterface::ANY);
ibrcommon::socketset anysocks = _socket.get(any_iface);
for (ibrcommon::socketset::iterator it = anysocks.begin(); it != anysocks.end(); ++it)
{
ibrcommon::multicastsocket *msock = dynamic_cast<ibrcommon::multicastsocket*>(*it);
if (msock == NULL) continue;
for (std::set<ibrcommon::vaddress>::const_iterator addr_it = _destinations.begin(); addr_it != _destinations.end(); ++addr_it)
{
const ibrcommon::vaddress &addr = (*addr_it);
// join only if family matches
if (addr.family() != msock->get_family()) continue;
try {
msock->join(addr, iface);
IBRCOMMON_LOGGER_DEBUG_TAG(IPNDAgent::TAG, 10) << "Joined " << addr.toString() << " on " << iface.toString() << IBRCOMMON_LOGGER_ENDL;
} catch (const ibrcommon::socket_raw_error &e) {
if (e.error() == EADDRINUSE) {
// silent error
} else if (e.error() == 92) {
// silent error - protocol not available
} else {
IBRCOMMON_LOGGER_TAG(IPNDAgent::TAG, warning) << "Join to " << addr.toString() << " failed on " << iface.toString() << "; " << e.what() << IBRCOMMON_LOGGER_ENDL;
}
} catch (const ibrcommon::socket_exception &e) {
IBRCOMMON_LOGGER_DEBUG_TAG(IPNDAgent::TAG, 10) << "Join to " << addr.toString() << " failed on " << iface.toString() << "; " << e.what() << IBRCOMMON_LOGGER_ENDL;
}
}
}
}
void IPNDAgent::join(const ibrcommon::vinterface &iface) throw ()
{
std::list<ibrcommon::vaddress> addrs = iface.getAddresses();
for (std::list<ibrcommon::vaddress>::const_iterator it = addrs.begin(); it != addrs.end(); ++it)
{
ibrcommon::vaddress addr = (*it);
addr.setService(_port);
join(iface, addr);
}
}