bool C4Network2Client::DoConnectAttempt(C4Network2IO *pIO)
{
// local?
if (isLocal()) { iNextConnAttempt = 0; return true; }
// msg and data connected? Nothing to do
if (getMsgConn() != getDataConn()) { iNextConnAttempt = time(NULL) + 10; return true; }
// too early?
if (iNextConnAttempt && iNextConnAttempt > time(NULL)) return true;
// find address to try
int32_t iBestAddress = -1;
for (int32_t i = 0; i < iAddrCnt; i++)
// no connection for this protocol?
if ((!pDataConn || Addr[i].getProtocol() != pDataConn->getProtocol()) &&
(!pMsgConn || Addr[i].getProtocol() != pMsgConn->getProtocol()))
// protocol available?
if (pIO->getNetIO(Addr[i].getProtocol()))
// new best address?
if (iBestAddress < 0 || AddrAttempts[i] < AddrAttempts[iBestAddress])
iBestAddress = i;
// too many attempts or nothing found?
if (iBestAddress < 0 || AddrAttempts[iBestAddress] > C4NetClientConnectAttempts)
{ iNextConnAttempt = time(NULL) + 10; return true; }
// save attempt
AddrAttempts[iBestAddress]++; iNextConnAttempt = time(NULL) + C4NetClientConnectInterval;
// log
LogSilentF("Network: connecting client %s on %s...", getName(), Addr[iBestAddress].toString().getData());
// connect
return pIO->Connect(Addr[iBestAddress].getAddr(), Addr[iBestAddress].getProtocol(), pClient->getCore());
}
bool C4Network2Client::DoConnectAttempt(C4Network2IO *pIO)
{
// local?
if (isLocal()) { iNextConnAttempt = 0; return true; }
// msg and data connected? Nothing to do
if (getMsgConn() != getDataConn()) { iNextConnAttempt = time(nullptr) + 10; return true; }
// too early?
if (iNextConnAttempt && iNextConnAttempt > time(nullptr)) return true;
// find address to try
int32_t iBestAddress = -1;
for (int32_t i = 0; i < iAddrCnt; i++)
// no connection for this protocol?
if ((!pDataConn || Addr[i].getProtocol() != pDataConn->getProtocol()) &&
(!pMsgConn || Addr[i].getProtocol() != pMsgConn->getProtocol()))
// protocol available?
if (pIO->getNetIO(Addr[i].getProtocol()))
// new best address?
if (iBestAddress < 0 || AddrAttempts[i] < AddrAttempts[iBestAddress])
iBestAddress = i;
// too many attempts or nothing found?
if (iBestAddress < 0 || AddrAttempts[iBestAddress] > C4NetClientConnectAttempts)
{ iNextConnAttempt = time(nullptr) + 10; return true; }
// save attempt
AddrAttempts[iBestAddress]++; iNextConnAttempt = time(nullptr) + C4NetClientConnectInterval;
auto addr = Addr[iBestAddress].getAddr();
// try TCP simultaneous open if the stars align right
if (addr.GetFamily() == C4NetIO::addr_t::IPv6 && // address needs to be IPv6...
!addr.IsLocal() && !addr.IsPrivate() && // ...global unicast...
Addr[iBestAddress].getProtocol() == P_TCP && // ...TCP,
!TcpSimOpenSocket && // there is no previous request,
pParent->GetLocal()->getID() < getID()) // and make sure that only one client per pair initiates a request.
{
DoTCPSimultaneousOpen(pIO, C4Network2Address());
}
std::set<int> interfaceIDs;
if (addr.IsLocal())
interfaceIDs = Network.Clients.GetLocal()->getInterfaceIDs();
else
interfaceIDs = {0};
for (auto id : interfaceIDs)
{
addr.SetScopeId(id);
// log
LogSilentF("Network: connecting client %s on %s...", getName(), addr.ToString().getData());
// connect
if (pIO->Connect(addr, Addr[iBestAddress].getProtocol(), pClient->getCore()))
return true;
}
return false;
}
bool C4Network2Client::SendData(C4NetIOPacket rPkt) const
{
return getDataConn() && getDataConn()->Send(rPkt);
}
