void CDplusProtocol::HandleKeepalives(void)
{
// send keepalives
CBuffer keepalive;
EncodeKeepAlivePacket(&keepalive);
// iterate on clients
CClients *clients = g_Reflector.GetClients();
int index = -1;
CClient *client = NULL;
while ( (client = clients->FindNextClient(PROTOCOL_DPLUS, &index)) != NULL )
{
// send keepalive
//std::cout << "Sending DPlus packet @ " << client->GetIp() << std::endl;
m_Socket.Send(keepalive, client->GetIp());
// is this client busy ?
if ( client->IsAMaster() )
{
// yes, just tickle it
client->Alive();
}
// check it's still with us
else if ( !client->IsAlive() )
{
// no, disconnect
CBuffer disconnect;
EncodeDisconnectPacket(&disconnect);
m_Socket.Send(disconnect, client->GetIp());
// and remove it
std::cout << "DPlus client " << client->GetCallsign() << " keepalive timeout" << std::endl;
clients->RemoveClient(client);
}
}
g_Reflector.ReleaseClients();
}
void CDplusProtocol::HandleQueue(void)
{
m_Queue.Lock();
while ( !m_Queue.empty() )
{
// get the packet
CPacket *packet = m_Queue.front();
m_Queue.pop();
// get our sender's id
int iModId = g_Reflector.GetModuleIndex(packet->GetModuleId());
// check if it's header and update cache
if ( packet->IsDvHeader() )
{
// this relies on queue feeder setting valid module id
m_DvHeadersCache[iModId] = CDvHeaderPacket((const CDvHeaderPacket &)*packet);
m_iSeqCounters[iModId] = 0;
}
// encode it
CBuffer buffer;
if ( EncodeDvPacket(*packet, &buffer) )
{
// and push it to all our clients who are not streaming in
// note that for dplus protocol, all stream of all modules are push to all clients
// it's client who decide which stream he's interrrested in
CClients *clients = g_Reflector.GetClients();
int index = -1;
CClient *client = NULL;
while ( (client = clients->FindNextClient(PROTOCOL_DPLUS, &index)) != NULL )
{
// is this client busy ?
if ( !client->IsAMaster() )
{
// check if client is a dextra dongle
// then replace RPT2 with XRF instead of REF
// if the client type is not yet known, send bothheaders
if ( packet->IsDvHeader() )
{
// sending header in Dplus is client specific
SendDvHeader((CDvHeaderPacket *)packet, (CDplusClient *)client);
}
else if ( packet->IsDvFrame() )
{
// and send the DV frame
m_Socket.Send(buffer, client->GetIp());
// is it time to insert a DVheader copy ?
if ( (m_iSeqCounters[iModId]++ % 21) == 20 )
{
// yes, clone it
CDvHeaderPacket packet2(m_DvHeadersCache[iModId]);
// and send it
SendDvHeader(&packet2, (CDplusClient *)client);
}
}
else
{
// otherwise, send the original packet
m_Socket.Send(buffer, client->GetIp());
}
}
}
g_Reflector.ReleaseClients();
}
// done
delete packet;
}
m_Queue.Unlock();
}