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// $Id$
#include "IOR_Multicast.h"
ACE_RCSID(orbsvcs, IOR_Multicast, "$Id$")
ACE_HANDLE
TAO_IOR_Multicast::get_handle (void) const
{
return this->mcast_dgram_.get_handle ();
}
TAO_IOR_Multicast::TAO_IOR_Multicast (void)
: service_id_ ((TAO_Service_ID) 0),
ior_ (0)
{
}
TAO_IOR_Multicast::TAO_IOR_Multicast (const char *ior,
u_short port,
const char *mcast_addr,
TAO_Service_ID service_id)
{
if (this->init (ior,
port,
mcast_addr,
service_id) == -1)
ACE_ERROR ((LM_ERROR,
ASYS_TEXT ("%p\n"),
ASYS_TEXT ("TAO_IOR_Multicast")));
}
// destructor
TAO_IOR_Multicast::~TAO_IOR_Multicast (void)
{
this->mcast_dgram_.unsubscribe ();
}
int
TAO_IOR_Multicast::init (const char *ior,
u_short port,
const char *mcast_addr,
TAO_Service_ID service_id)
{
this->service_id_ = service_id;
this->mcast_addr_.set (port, mcast_addr);
this->ior_ = ior;
this->response_addr_.set ((u_short) 0);
this->response_.open (this->response_addr_);
// Use ACE_SOCK_Dgram_Mcast factory to subscribe to multicast group.
if (this->mcast_dgram_.subscribe (this->mcast_addr_) == -1)
ACE_ERROR_RETURN ((LM_ERROR,
"%p\n",
"subscribe"),
-1);
return 0;
}
int
TAO_IOR_Multicast::handle_timeout (const ACE_Time_Value &,
const void *)
{
return 0;
}
int
TAO_IOR_Multicast::handle_input (ACE_HANDLE)
{
// mcast_info[0] == port.
// mcast_info[1] == service id.
ACE_UINT16 mcast_info[2];
ACE_INET_Addr remote_addr;
ssize_t result =
// This call fills in the address of the sender.
this->mcast_dgram_.recv (mcast_info,
sizeof (mcast_info),
remote_addr);
if (result == -1)
return -1;
if (TAO_debug_level > 0)
ACE_DEBUG ((LM_DEBUG,
"(%P|%t) Received multicast.\n"));
// Validate data string received is from a valid client here.
if (result != sizeof (mcast_info))
ACE_ERROR_RETURN ((LM_ERROR,
"Reply to multicast not sent. Received %d bytes, expected %d.",
result,
sizeof (mcast_info)),
-1);
// Confirm that we were meant to respond to this request.
mcast_info[1] = ACE_NTOHS (mcast_info[1]);
if (mcast_info[1] == this->service_id_)
{
remote_addr.set_port_number (mcast_info[0], 0);
// Send the object reference for the naming service
// Wait to give client a chance to start receiving,
// Send two times to provide better protection against packet
// loss.
// @@Vishal, a better (not hardcoded) 'policy' solution for this should be provided.
for (int i = 0; i < 5; ++i)
{
ACE_OS::sleep (ACE_Time_Value (0, 10000));
result = response_.send (this->ior_,
ACE_OS::strlen (this->ior_),
remote_addr,
0);
}
if (TAO_debug_level > 0)
ACE_DEBUG ((LM_DEBUG,
"(%P|%t) ior_: <%s>\n"
" sent through port %u to host %s.\n"
"result = %d\n",
this->ior_,
remote_addr.get_port_number (),
remote_addr.get_host_name (),
result));
if (result == -1)
return -1;
}
else
ACE_DEBUG ((LM_DEBUG,
"(%P|%t) Multicast was not for us."));
return 0;
}
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