void EQStream::CheckTimeout(uint32 now, uint32 timeout) {
bool outgoing_data = HasOutgoingData(); //up here to avoid recursive locking
EQStreamState orig_state = GetState();
if (orig_state == CLOSING && !outgoing_data) {
_log(NET__NET_TRACE, _L "Out of data in closing state, disconnecting." __L);
_SendDisconnect();
SetState(DISCONNECTING);
} else if (LastPacket && (now-LastPacket) > timeout) {
switch(orig_state) {
case CLOSING:
//if we time out in the closing state, they are not acking us, just give up
_log(NET__DEBUG, _L "Timeout expired in closing state. Moving to closed state." __L);
_SendDisconnect();
SetState(CLOSED);
break;
case DISCONNECTING:
//we timed out waiting for them to send us the disconnect reply, just give up.
_log(NET__DEBUG, _L "Timeout expired in disconnecting state. Moving to closed state." __L);
SetState(CLOSED);
break;
case CLOSED:
_log(NET__DEBUG, _L "Timeout expired in closed state??" __L);
break;
case ESTABLISHED:
//we timed out during normal operation. Try to be nice about it.
//we will almost certainly time out again waiting for the disconnect reply, but oh well.
_log(NET__DEBUG, _L "Timeout expired in established state. Closing connection." __L);
_SendDisconnect();
SetState(DISCONNECTING);
}
}
}
void EQStream::Close() {
if(HasOutgoingData()) {
//there is pending data, wait for it to go out.
Log.Out(Logs::Detail, Logs::Netcode, _L "Stream requested to Close(), but there is pending data, waiting for it." __L);
SetState(CLOSING);
} else {
//otherwise, we are done, we can drop immediately.
_SendDisconnect();
Log.Out(Logs::Detail, Logs::Netcode, _L "Stream closing immediate due to Close()" __L);
SetState(DISCONNECTING);
}
}
void EQStream::AdjustRates(uint32 average_delta)
{
#ifdef RETRANSMITS
if (average_delta && (average_delta <= RuleI(EQStream, AverageDeltaMax))) {
#else
if (average_delta) {
#endif
MRate.lock();
RateThreshold=RATEBASE/average_delta;
DecayRate=DECAYBASE/average_delta;
_log(NET__RATES, _L "Adjusting data rate to thresh %d, decay %d based on avg delta %d" __L, RateThreshold, DecayRate, average_delta);
MRate.unlock();
#ifdef RETRANSMITS
} else {
_log(NET__RATES, _L "Not adjusting data rate because avg delta over max (%d > %d)" __L, average_delta, RuleI(EQStream, AverageDeltaMax));
#endif
}
}
void EQStream::Close() {
if(HasOutgoingData()) {
//there is pending data, wait for it to go out.
_log(NET__DEBUG, _L "Stream requested to Close(), but there is pending data, waiting for it." __L);
SetState(CLOSING);
} else {
//otherwise, we are done, we can drop immediately.
_SendDisconnect();
_log(NET__DEBUG, _L "Stream closing immediate due to Close()" __L);
SetState(DISCONNECTING);
}
}
//this could be expanded to check more than the fitst opcode if
//we needed more complex matching
EQStream::MatchState EQStream::CheckSignature(const Signature *sig) {
EQRawApplicationPacket *p = NULL;
MatchState res = MatchNotReady;
MInboundQueue.lock();
if (!InboundQueue.empty()) {
//this is already getting hackish...
p = InboundQueue.front();
if(sig->ignore_eq_opcode != 0 && p->opcode == sig->ignore_eq_opcode) {
if(InboundQueue.size() > 1) {
p = InboundQueue[1];
} else {
p = NULL;
}
}
if(p == NULL) {
//first opcode is ignored, and nothing else remains... keep waiting
} else if(p->opcode == sig->first_eq_opcode) {
//opcode matches, check length..
if(p->size == sig->first_length) {
_log(NET__IDENT_TRACE, "%s:%d: First opcode matched 0x%x and length matched %d", long2ip(GetRemoteIP()).c_str(), ntohs(GetRemotePort()), sig->first_eq_opcode, p->size);
res = MatchSuccessful;
} else if(sig->first_length == 0) {
_log(NET__IDENT_TRACE, "%s:%d: First opcode matched 0x%x and length (%d) is ignored", long2ip(GetRemoteIP()).c_str(), ntohs(GetRemotePort()), sig->first_eq_opcode, p->size);
res = MatchSuccessful;
} else {
//opcode matched but length did not.
_log(NET__IDENT_TRACE, "%s:%d: First opcode matched 0x%x, but length %d did not match expected %d", long2ip(GetRemoteIP()).c_str(), ntohs(GetRemotePort()), sig->first_eq_opcode, p->size, sig->first_length);
res = MatchFailed;
}
} else {
//first opcode did not match..
_log(NET__IDENT_TRACE, "%s:%d: First opcode 0x%x did not match expected 0x%x", long2ip(GetRemoteIP()).c_str(), ntohs(GetRemotePort()), p->opcode, sig->first_eq_opcode);
res = MatchFailed;
}
}
MInboundQueue.unlock();
return(res);
}
