bool DgramTwoWayStream::join(const Contact& group, bool sender,
const Contact& ipLocal) {
#ifdef YARP_HAS_ACE
YARP_DEBUG(Logger::get(),String("subscribing to mcast address ") +
group.toURI() + " for " +
(sender?"writing":"reading"));
multiMode = true;
if (sender) {
if (ipLocal.isValid()) {
return openMcast(group,ipLocal);
} else {
// just use udp as normal
return open(group);
}
//return;
}
ACE_SOCK_Dgram_Mcast *dmcast = new ACE_SOCK_Dgram_Mcast;
//possible flags: ((ACE_SOCK_Dgram_Mcast::options)(ACE_SOCK_Dgram_Mcast::OPT_NULLIFACE_ALL | ACE_SOCK_Dgram_Mcast::OPT_BINDADDR_YES));
dgram = dmcast;
mgram = dmcast;
yAssert(dgram!=NULL);
ACE_INET_Addr addr(group.getPort(),group.getHost().c_str());
int result = -1;
if (ipLocal.isValid()) {
result = 0;
result = dmcast->join(addr,1);
if (result==0) {
result = restrictMcast(dmcast,group,ipLocal,true);
}
} else {
result = dmcast->join(addr,1);
}
configureSystemBuffers();
if (result!=0) {
YARP_ERROR(Logger::get(),"cannot connect to multi-cast address");
happy = false;
return false;
}
localAddress = group;
remoteAddress = group;
localHandle.set(localAddress.getPort(),localAddress.getHost().c_str());
remoteHandle.set(remoteAddress.getPort(),remoteAddress.getHost().c_str());
allocate();
return true;
#else
return false;
#endif
}
void
TAO_ECG_Mcast_EH::add_new_subscriptions (Address_Set& multicast_addresses)
{
typedef ACE_Unbounded_Set_Iterator<ACE_INET_Addr> Address_Iterator;
for (Address_Iterator k = multicast_addresses.begin ();
k != multicast_addresses.end ();
++k)
{
Subscription new_subscription;
new_subscription.mcast_addr = *k;
ACE_NEW (new_subscription.dgram, ACE_SOCK_Dgram_Mcast);
size_t const subscriptions_size = this->subscriptions_.size ();
this->subscriptions_.size (subscriptions_size + 1);
this->subscriptions_[subscriptions_size] = new_subscription;
ACE_SOCK_Dgram_Mcast *socket = new_subscription.dgram;
if (socket->open (new_subscription.mcast_addr, this->net_if_, 1) == -1) {
ORBSVCS_ERROR ((LM_ERROR,
"Error: %d - Unable to open multicast socket\n",
ACE_ERRNO_GET));
}
if ( socket->enable (ACE_NONBLOCK) != 0 ) {
ORBSVCS_ERROR ((LM_ERROR,
"Error: %d - Unable to enable nonblocking on mcast_eh\n",
ACE_ERRNO_GET));
}
if (socket->join (new_subscription.mcast_addr, 1, this->net_if_) == -1) {
ORBSVCS_ERROR ((LM_ERROR,
"Error: %d - Unable to join multicast group\n",
ACE_ERRNO_GET));
}
if (this->recvbuf_size_ != 0
&& (((ACE_SOCK_Dgram *)socket)->set_option(SOL_SOCKET,
SO_RCVBUF,
(void *) &this->recvbuf_size_,
sizeof (this->recvbuf_size_)) == -1)
&& errno != ENOTSUP )
{
ORBSVCS_ERROR ((LM_ERROR,
"Error: %d - Unable to set mcast_eh recvbuf_size:%d\n",
ACE_ERRNO_GET,
this->recvbuf_size_));
}
(void) this->reactor ()->register_handler (
socket->get_handle (),
this,
ACE_Event_Handler::READ_MASK);
}
}
int send_multicast (const ACE_INET_Addr &mcast_addr)
{
const char *message = "this is the message!\n";
ACE_SOCK_Dgram_Mcast udp;
if (-1 == udp.join (mcast_addr))
ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("%p\n"),
ACE_TEXT ("join")), -1);
ssize_t sent = udp.send (message,
ACE_OS::strlen (message) + 1);
udp.close ();
if (sent == -1)
ACE_ERROR_RETURN ((LM_ERROR, ACE_TEXT ("%p\n"),
ACE_TEXT ("send")), -1);
return 0;
}