void C4Network2ClientList::HandlePacket(char cStatus,
const C4PacketBase *pBasePkt,
C4Network2IOConnection *pConn) {
// find associated client
C4Network2Client *pClient = GetClient(pConn);
if (!pClient) return;
#define GETPKT(type, name) \
assert(pBasePkt); \
const type &name = /*dynamic_cast*/ static_cast<const type &>(*pBasePkt);
switch (cStatus) {
case PID_Addr: // address propagation
{
GETPKT(C4PacketAddr, rPkt)
// find client
pClient = GetClientByID(rPkt.getClientID());
if (pClient) {
C4Network2Address addr = rPkt.getAddr();
// IP zero? Set to IP from where the packet came
if (addr.isIPNull()) addr.SetIP(pConn->getPeerAddr().sin_addr);
// add (no announce)
if (pClient->AddAddr(addr, true))
// new address? Try to connect
pClient->DoConnectAttempt(pIO);
}
} break;
}
#undef GETPKT
}
bool C4Network2Client::DoTCPSimultaneousOpen(class C4Network2IO *pIO, const C4Network2Address &addr)
{
if (!pIO->getNetIO(P_TCP)) return false;
// Did we already bind a socket?
if (TcpSimOpenSocket)
{
LogSilentF("Network: connecting client %s on %s with TCP simultaneous open...", getName(), addr.getAddr().ToString().getData());
return pIO->ConnectWithSocket(addr.getAddr(), addr.getProtocol(), pClient->getCore(), std::move(TcpSimOpenSocket));
}
else
{
// No - bind one, inform peer, and schedule a connection attempt.
auto NetIOTCP = dynamic_cast<C4NetIOTCP*>(pIO->getNetIO(P_TCP));
auto bindAddr = pParent->GetLocal()->IPv6AddrFromPuncher;
// We need to know an address that works.
if (bindAddr.IsNull()) return false;
bindAddr.SetPort(0);
TcpSimOpenSocket = NetIOTCP->Bind(bindAddr);
auto boundAddr = TcpSimOpenSocket->GetAddress();
LogSilentF("Network: %s TCP simultaneous open request for client %s from %s...", addr.isIPNull() ? "initiating" : "responding to",
getName(), boundAddr.ToString().getData());
// Send address we bound to to the client.
if (!SendMsg(MkC4NetIOPacket(PID_TCPSimOpen, C4PacketTCPSimOpen(pParent->GetLocal()->getID(), C4Network2Address(boundAddr, P_TCP)))))
return false;
if (!addr.isIPNull())
{
// We need to delay the connection attempt a bit. Unfortunately,
// waiting for the next tick would usually take way too much time.
// Instead, we block the main thread for a very short time and hope
// that noone notices...
int ping = getMsgConn()->getLag();
std::this_thread::sleep_for(std::chrono::milliseconds(std::min(ping / 2, 10)));
DoTCPSimultaneousOpen(pIO, addr);
}
return true;
}
}
bool C4Network2Address::operator == (const C4Network2Address &addr2) const
{
return eProtocol == addr2.getProtocol() && AddrEqual(addr, addr2.getAddr());
}
void C4Network2ClientDlg::UpdateText()
{
// begin updating (clears previous text)
BeginUpdateText();
// get core
const C4Client *pClient = Game.Clients.getClientByID(iClientID);
if (!pClient)
{
// client ID unknown
AddLineFmt(LoadResStr("IDS_NET_CLIENT_INFO_UNKNOWNID"), iClientID);
}
else
{
// get client (may be nullptr for local info)
C4Network2Client *pNetClient = pClient->getNetClient();
// show some info
StdCopyStrBuf strInfo;
if (!pClient->isActivated()) { strInfo.Append(LoadResStr("IDS_MSG_INACTIVE")); strInfo.Append(" "); }
if (pClient->isLocal()) { strInfo.Append(LoadResStr("IDS_MSG_LOCAL")); strInfo.Append(" "); }
strInfo.AppendFormat("%s %s (ID #%d)%s",
LoadResStr(pClient->isHost() ? "IDS_MSG_HOST" : "IDS_MSG_CLIENT"),
pClient->getName(),
iClientID,
::Network.isHost() && pNetClient && !pNetClient->isReady() ? " (!ack)" : "");
AddLine(strInfo.getData());
// show addresses
int iCnt;
if ((iCnt=pNetClient->getAddrCnt()))
{
AddLine(LoadResStr("IDS_NET_CLIENT_INFO_ADDRESSES"));
for (int i=0; i<iCnt; ++i)
{
C4Network2Address addr = pNetClient->getAddr(i);
AddLineFmt(" %d: %s",
i, // adress index
addr.toString().getData());
}
}
else
AddLine(LoadResStr("IDS_NET_CLIENT_INFO_NOADDRESSES"));
// show connection
if (pNetClient)
{
// connections
if (pNetClient->isConnected())
{
AddLineFmt(LoadResStr("IDS_NET_CLIENT_INFO_CONNECTIONS"),
pNetClient->getMsgConn() == pNetClient->getDataConn() ? "Msg/Data" : "Msg",
::Network.NetIO.getNetIOName(pNetClient->getMsgConn()->getNetClass()),
pNetClient->getMsgConn()->getPeerAddr().ToString().getData(),
pNetClient->getMsgConn()->getPingTime());
if (pNetClient->getMsgConn() != pNetClient->getDataConn())
AddLineFmt(LoadResStr("IDS_NET_CLIENT_INFO_CONNDATA"),
::Network.NetIO.getNetIOName(pNetClient->getDataConn()->getNetClass()),
pNetClient->getDataConn()->getPeerAddr().ToString().getData(),
pNetClient->getDataConn()->getPingTime());
}
else
AddLine(LoadResStr("IDS_NET_CLIENT_INFO_NOCONNECTIONS"));
}
}
// update done
EndUpdateText();
}
