bool C4Network2IO::BroadcastMsg(const C4NetIOPacket &rPkt) // by both
{
// TODO: ugly algorithm. do better
// begin broadcast
BeginBroadcast(false);
// select one connection per reachable client
CStdLock ConnListLock(&ConnListCSec);
for (C4Network2IOConnection *pConn = pConnList; pConn; pConn = pConn->pNext)
if (pConn->isAccepted())
{
if (pConn->getProtocol() == P_UDP)
pConn->SetBroadcastTarget(true);
else if (pConn->getProtocol() == P_TCP)
{
C4Network2IOConnection *pConn2 = GetMsgConnection(pConn->getClientID());
if (pConn == pConn2)
pConn->SetBroadcastTarget(true);
pConn2->DelRef();
}
}
// send
bool fSuccess = Broadcast(rPkt);
// end broadcast
EndBroadcast();
// return
return fSuccess;
}
void C4Network2IO::HandleFwdReq(const C4PacketFwd &rFwd, C4Network2IOConnection *pBy)
{
CStdLock ConnListLock(&ConnListCSec);
// init packet
C4PacketFwd nFwd;
nFwd.SetListType(false);
// find all clients the message should be forwarded to
int iClientID;
C4Network2IOConnection *pConn;
for (pConn = pConnList; pConn; pConn = pConn->pNext)
if (pConn->isAccepted())
if ((iClientID = pConn->getClientID()) >= 0)
if (iClientID != pBy->getClientID())
if (rFwd.DoFwdTo(iClientID) && !nFwd.DoFwdTo(iClientID))
nFwd.AddClient(iClientID);
// check count (hardcoded: broadcast for > 2 clients)
if (nFwd.getClientCnt() <= 2)
{
C4NetIOPacket Pkt(rFwd.getData(), C4NetIO::addr_t());
for (int i = 0; i < nFwd.getClientCnt(); i++)
if ((pConn = GetMsgConnection(nFwd.getClient(i))))
{
pConn->Send(Pkt);
pConn->DelRef();
}
}
else
{
// Temporarily unlock connection list for getting broadcast lock
// (might lead to deathlocks otherwise, as the lock is often taken
// in the opposite order)
ConnListLock.Clear();
BeginBroadcast();
nFwd.SetData(rFwd.getData());
// add all clients
CStdLock ConnListLock(&ConnListCSec);
for (int i = 0; i < nFwd.getClientCnt(); i++)
if ((pConn = GetMsgConnection(nFwd.getClient(i))))
{
pConn->SetBroadcastTarget(true);
pConn->DelRef();
}
// broadcast
Broadcast(MkC4NetIOPacket(PID_Fwd, nFwd));
EndBroadcast();
}
// doing a callback here; don't lock!
ConnListLock.Clear();
// forward to self?
if (rFwd.DoFwdTo(LCCore.getID()))
{
C4NetIOPacket Packet(rFwd.getData(), pBy->getPeerAddr());
HandlePacket(Packet, pBy, true);
}
}
void C4Network2IO::BeginBroadcast(bool fSelectAll)
{
// lock
BroadcastCSec.Enter();
// reset all broadcast flags
CStdLock ConnListLock(&ConnListCSec);
for (C4Network2IOConnection *pConn = pConnList; pConn; pConn = pConn->pNext)
if (pConn->isOpen())
pConn->SetBroadcastTarget(fSelectAll);
}