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refactor(network): Remove legacy Send Delay #3007

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6630cf5
refactor(network): Remove legacy Send Delay and Netgear NAT workaround
githubawn Jul 22, 2026
af2e7af
refactor(network): Use NAMEKEY macro for hiding checkSendDelay
githubawn Jul 23, 2026
26e5128
refactor(network): Put Send Delay check box hiding behind ENABLE_GUI_…
githubawn Jul 26, 2026
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1 change: 0 additions & 1 deletion Core/GameEngine/Include/Common/OptionPreferences.h
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Original file line number Diff line number Diff line change
Expand Up @@ -84,7 +84,6 @@ class OptionPreferences : public UserPreferences
Bool getScreenEdgeScrollEnabledInWindowedApp() const;
Bool getScreenEdgeScrollEnabledInFullscreenApp() const;
ScreenEdgeScrollMode getScreenEdgeScrollMode() const;
Bool getSendDelay();
Int getFirewallBehavior();
Short getFirewallPortAllocationDelta();
UnsignedShort getFirewallPortOverride();
Expand Down
20 changes: 0 additions & 20 deletions Core/GameEngine/Include/GameNetwork/FirewallHelper.h
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Expand Up @@ -143,12 +143,6 @@ class FirewallHelperClass {
*/
FIREWALL_TYPE_SMART_MANGLING = 4,

/*
** This is a firewall that exhibits the bug as seen in the Netgear firewalls. A previously good
** source port mapping will change in response to unsolicited traffic from a known IP.
*/
FIREWALL_TYPE_NETGEAR_BUG = 8,

/*
** This firewall has a simple absolute offset port allocation scheme.
*/
Expand Down Expand Up @@ -225,20 +219,6 @@ class FirewallHelperClass {
return(TRUE);
};

Bool isNetgear(FirewallBehaviorType behavior) {
if ((behavior & FIREWALL_TYPE_NETGEAR_BUG) != 0) {
return(TRUE);
}
return(FALSE);
};

Bool isNetgear() {
if ((m_behavior & FIREWALL_TYPE_NETGEAR_BUG) != 0) {
return(TRUE);
}
return(FALSE);
};



private:
Expand Down
1 change: 0 additions & 1 deletion Core/GameEngine/Include/GameNetwork/NAT.h
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Expand Up @@ -47,7 +47,6 @@ enum NATStateType CPP_11(: Int) {
enum NATConnectionState CPP_11(: Int) {
NATCONNECTIONSTATE_NOSTATE,
NATCONNECTIONSTATE_WAITINGTOBEGIN,
// NATCONNECTIONSTATE_NETGEARDELAY,
NATCONNECTIONSTATE_WAITINGFORMANGLERRESPONSE,
NATCONNECTIONSTATE_WAITINGFORMANGLEDPORT,
NATCONNECTIONSTATE_WAITINGFORRESPONSE,
Expand Down
12 changes: 0 additions & 12 deletions Core/GameEngine/Source/Common/OptionPreferences.cpp
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Expand Up @@ -451,18 +451,6 @@ Int OptionPreferences::getStaticGameDetail()
return TheGameLODManager->getStaticGameLODIndex(it->second);
}

Bool OptionPreferences::getSendDelay()
{
OptionPreferences::const_iterator it = find("SendDelay");
if (it == end())
return TheGlobalData->m_firewallSendDelay;

if (stricmp(it->second.str(), "yes") == 0) {
return TRUE;
}
return FALSE;
}

Int OptionPreferences::getFirewallBehavior()
{
OptionPreferences::const_iterator it = find("FirewallBehavior");
Expand Down
52 changes: 0 additions & 52 deletions Core/GameEngine/Source/GameNetwork/FirewallHelper.cpp
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Expand Up @@ -626,12 +626,6 @@ Bool FirewallHelperClass::detectionBeginUpdate() {
m_behavior = FIREWALL_TYPE_SIMPLE;
DEBUG_LOG(("Source port %d specified by user", TheGlobalData->m_firewallPortOverride));

if (TheGlobalData->m_firewallSendDelay) {
UnsignedInt addbehavior = FIREWALL_TYPE_NETGEAR_BUG;
addbehavior |= (UnsignedInt)m_behavior;
m_behavior = (FirewallBehaviorType) addbehavior;
DEBUG_LOG(("Netgear bug specified by command line or SendDelay flag"));
}
m_currentState = DETECTIONSTATE_DONE;
return TRUE;
}
Expand Down Expand Up @@ -714,20 +708,6 @@ Bool FirewallHelperClass::detectionBeginUpdate() {
// memcpy(&(m_manglers[i]), &mangler_addresses[i][0], 4);
}

DEBUG_LOG(("FirewallHelperClass::detectionBeginUpdate - Testing for Netgear bug"));

/*
** See if the user specified a netgear firewall - that will save us the trouble.
*/
if (TheGlobalData->m_firewallSendDelay) {
UnsignedInt addbehavior = FIREWALL_TYPE_NETGEAR_BUG;
addbehavior |= (UnsignedInt)m_behavior;
m_behavior = (FirewallBehaviorType) addbehavior;
DEBUG_LOG(("FirewallHelperClass::detectionBeginUpdate - Netgear bug specified by command line or SendDelay flag"));
} else {
DEBUG_LOG(("FirewallHelperClass::detectionBeginUpdate - Netgear bug not specified"));
}

/*
** OK, we have our manglers.
**
Expand Down Expand Up @@ -1173,28 +1153,7 @@ Bool FirewallHelperClass::detectionTest4Stage2Update() {
Bool FirewallHelperClass::detectionTest5Update() {
/*
** We have done all the tests we *have* to. There's other info that it would be nice to know though.
**
** Test for the netgear bug behavior.
*/
#if (0)
// moved to before test 1. Moved because this flag could be specified for another firewall
// for testing purposes and never get this far because it has behavior that doesn't require
// all the tests to be performed.
// BGC 10/1/02
DEBUG_LOG(("FirewallHelperClass::detectionTest5Update - Testing for Netgear bug"));

/*
** See if the user specified a netgear firewall - that will save us the trouble.
*/
if (TheGlobalData->m_firewallSendDelay) {
UnsignedInt addbehavior = FIREWALL_TYPE_NETGEAR_BUG;
addbehavior |= (UnsignedInt)m_behavior;
m_behavior = (FirewallBehaviorType) addbehavior;
DEBUG_LOG(("FirewallHelperClass::detectionTest5Update - Netgear bug specified by command line or SendDelay flag"));
} else {
DEBUG_LOG(("FirewallHelperClass::detectionTest5Update - Netgear bug not specified"));
}
#endif // #if (0)

DEBUG_LOG_RAW(("FirewallHelperClass::detectionTest5Update - All done, behavior is: "));

Expand All @@ -1207,9 +1166,6 @@ Bool FirewallHelperClass::detectionTest5Update() {
if ((m_behavior & FIREWALL_TYPE_SMART_MANGLING) != 0) {
DEBUG_LOG_RAW((" FIREWALL_TYPE_SMART_MANGLING "));
}
if ((m_behavior & FIREWALL_TYPE_NETGEAR_BUG) != 0) {
DEBUG_LOG_RAW((" FIREWALL_TYPE_NETGEAR_BUG "));
}
if ((m_behavior & FIREWALL_TYPE_SIMPLE_PORT_ALLOCATION) != 0) {
DEBUG_LOG_RAW((" FIREWALL_TYPE_SIMPLE_PORT_ALLOCATION "));
}
Expand Down Expand Up @@ -1433,10 +1389,6 @@ Int FirewallHelperClass::getFirewallHardness(FirewallBehaviorType behavior)
hardness += 3;
}

if (((UnsignedInt)FIREWALL_TYPE_NETGEAR_BUG & fw) != 0) {
hardness += 10;
}

if (((UnsignedInt)FIREWALL_TYPE_SIMPLE_PORT_ALLOCATION & fw) != 0) {
hardness += 1;
}
Expand Down Expand Up @@ -1486,10 +1438,6 @@ Int FirewallHelperClass::getFirewallRetries(FirewallBehaviorType behavior)
retries += 1;
}

if (((UnsignedInt)FIREWALL_TYPE_NETGEAR_BUG & fw) != 0) {
//retries += 10;
}

if (((UnsignedInt)FIREWALL_TYPE_SIMPLE_PORT_ALLOCATION & fw) != 0) {
//retries += 1;
}
Expand Down
99 changes: 10 additions & 89 deletions Core/GameEngine/Source/GameNetwork/NAT.cpp
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Expand Up @@ -402,7 +402,7 @@ NATConnectionState NAT::connectionUpdate() {
mangledPort = TheFirewallHelper->getManglerResponse(m_packetID);
}
if (mangledPort != 0) {
// we got a response. now we need to start probing (unless of course we have a netgear)
// we got a response. now we need to start probing
processManglerResponse(mangledPort);

// we know there is a firewall helper if we got here.
Expand Down Expand Up @@ -497,50 +497,7 @@ void NAT::establishConnectionPaths() {

m_previousSourcePort = 0;

// check for netgear bug behavior.
// as an aside, if there are more than 2 netgear bug firewall's in the game,
// it probably isn't going to work so well. stupid netgear.

// nodes with a netgear bug behavior need to be matched up first. This prevents
// the NAT table from being reset for connections to other nodes. This also happens
// to be the reason why I call them "nodes" rather than "slots" or "players" as the
// ordering has to be messed with to get the netgears to make love, not war.
DEBUG_LOG(("NAT::establishConnectionPaths - about to set up the node list"));
DEBUG_LOG(("NAT::establishConnectionPaths - doing the netgear stuff"));
UnsignedInt otherNetgearNum = -1;
for (i = 0; i < MAX_SLOTS; ++i) {
if ((m_slotList != nullptr) && (m_slotList[i] != nullptr)) {
if ((m_slotList[i]->getNATBehavior() & FirewallHelperClass::FIREWALL_TYPE_NETGEAR_BUG) != 0) {
if (otherNetgearNum == -1) {
// this is the start of a new pair, put it in as the first non -1 node connection pair thing.
Int nodeindex = 0;
while ((m_connectionPairs[m_connectionPairIndex][0][nodeindex] == -1) || (m_connectionNodes[nodeindex].m_slotIndex != -1)) {
++nodeindex;
}
m_connectionNodes[nodeindex].m_slotIndex = i;
m_connectionNodes[nodeindex].m_behavior = m_slotList[i]->getNATBehavior();
connectionAssigned[i] = TRUE;
otherNetgearNum = nodeindex;
DEBUG_LOG(("NAT::establishConnectionPaths - first netgear in pair. assigning node %d to slot %d (%ls)", nodeindex, i, m_slotList[i]->getName().str()));
} else {
// this is the second in the pair of netgears, pair this up with the other one
// for the first round.
Int nodeindex = 0;
while (m_connectionPairs[m_connectionPairIndex][0][nodeindex] != otherNetgearNum) {
++nodeindex;
}
m_connectionNodes[nodeindex].m_slotIndex = i;
m_connectionNodes[nodeindex].m_behavior = m_slotList[i]->getNATBehavior();
connectionAssigned[i] = TRUE;
otherNetgearNum = -1;
DEBUG_LOG(("NAT::establishConnectionPaths - second netgear in pair. assigning node %d to slot %d (%ls)", nodeindex, i, m_slotList[i]->getName().str()));
}
}
}
}

// fill in the rest of the nodes with the remaining slots.
DEBUG_LOG(("NAT::establishConnectionPaths - doing the non-Netgear nodes"));
for (i = 0; i < MAX_SLOTS; ++i) {
if (connectionAssigned[i] == TRUE) {
continue;
Expand Down Expand Up @@ -662,6 +619,7 @@ void NAT::doThisConnectionRound() {
if (i == m_localNodeNumber) {
m_targetNodeNumber = targetNodeNumber;
DEBUG_LOG(("NAT::doThisConnectionRound - Local node is connecting to node %d", m_targetNodeNumber));
#if defined(DEBUG_LOGGING)
UnsignedInt targetSlotIndex = m_connectionNodes[(m_connectionPairs[m_connectionPairIndex][m_connectionRound][i])].m_slotIndex;
GameSlot *targetSlot = m_slotList[targetSlotIndex];
GameSlot *localSlot = m_slotList[m_connectionNodes[m_localNodeNumber].m_slotIndex];
Expand All @@ -671,24 +629,13 @@ void NAT::doThisConnectionRound() {
DEBUG_LOG(("NAT::doThisConnectionRound - Target slot index = %d (%ls)", targetSlotIndex, m_slotList[targetSlotIndex]->getName().str()));
DEBUG_LOG(("NAT::doThisConnectionRound - Target slot has NAT behavior 0x%8X, local slot has NAT behavior 0x%8X", targetSlot->getNATBehavior(), localSlot->getNATBehavior()));

#if defined(DEBUG_LOGGING)
UnsignedInt targetIP = targetSlot->getIP();
UnsignedInt localIP = localSlot->getIP();
#endif

DEBUG_LOG(("NAT::doThisConnectionRound - Target slot has IP %d.%d.%d.%d Local slot has IP %d.%d.%d.%d",
PRINTF_IP_AS_4_INTS(targetIP),
PRINTF_IP_AS_4_INTS(localIP)));

if (((targetSlot->getNATBehavior() & FirewallHelperClass::FIREWALL_TYPE_NETGEAR_BUG) == 0) &&
((localSlot->getNATBehavior() & FirewallHelperClass::FIREWALL_TYPE_NETGEAR_BUG) != 0)) {

// we have a netgear bug type behavior and the target does not, so we need them to send to us
// first to avoid having our NAT table reset.

DEBUG_LOG(("NAT::doThisConnectionRound - Local node has a netgear and the target node does not, need to delay our probe."));
m_timeTillNextSend = -1;
}
#endif

// figure out which port number I'm using for this connection
// this merely starts to talk to the mangler server, we have to keep calling
Expand Down Expand Up @@ -941,26 +888,6 @@ void NAT::probed(Int nodeNumber) {
if (m_beenProbed == FALSE) {
m_beenProbed = TRUE;
DEBUG_LOG(("NAT::probed - just got probed for the first time."));
if ((localSlot->getNATBehavior() & FirewallHelperClass::FIREWALL_TYPE_NETGEAR_BUG) != 0) {
DEBUG_LOG(("NAT::probed - we have a NETGEAR and we were just probed for the first time"));
GameSlot *targetSlot = m_slotList[m_connectionNodes[m_targetNodeNumber].m_slotIndex];
DEBUG_ASSERTCRASH(targetSlot != nullptr, ("NAT::probed - targetSlot is null"));
if (targetSlot == nullptr) {
DEBUG_LOG(("NAT::probed - targetSlot is null, failed this connection"));
setConnectionState(m_localNodeNumber, NATCONNECTIONSTATE_FAILED);
return;
}

if (targetSlot->getPort() == 0) {
setConnectionState(m_localNodeNumber, NATCONNECTIONSTATE_WAITINGFORMANGLEDPORT);
DEBUG_LOG(("NAT::probed - still waiting for mangled port"));
} else {
DEBUG_LOG(("NAT::probed - sending a probe to %ls", targetSlot->getName().str()));
sendAProbe(targetSlot->getIP(), targetSlot->getPort(), m_localNodeNumber);
notifyTargetOfProbe(targetSlot);
setConnectionState(m_localNodeNumber, NATCONNECTIONSTATE_WAITINGFORRESPONSE);
}
}
}
}

Expand Down Expand Up @@ -996,20 +923,15 @@ void NAT::gotMangledPort(Int nodeNumber, UnsignedShort mangledPort) {

targetSlot->setPort(mangledPort);
DEBUG_LOG(("NAT::gotMangledPort - got mangled port number %d from our target node (%ls)", mangledPort, targetSlot->getName().str()));
if (((localSlot->getNATBehavior() & FirewallHelperClass::FIREWALL_TYPE_NETGEAR_BUG) == 0) || (m_beenProbed == TRUE) ||
(((localSlot->getNATBehavior() & FirewallHelperClass::FIREWALL_TYPE_NETGEAR_BUG) != 0) && ((targetSlot->getNATBehavior() & FirewallHelperClass::FIREWALL_TYPE_NETGEAR_BUG) != 0))) {
#ifdef DEBUG_LOGGING
UnsignedInt ip = targetSlot->getIP();
UnsignedInt ip = targetSlot->getIP();
#endif
DEBUG_LOG(("NAT::gotMangledPort - don't have a netgear or we have already been probed, or both my target and I have a netgear, send a PROBE. Sending to %d.%d.%d.%d:%d",
PRINTF_IP_AS_4_INTS(ip), targetSlot->getPort()));
DEBUG_LOG(("NAT::gotMangledPort - send a PROBE. Sending to %d.%d.%d.%d:%d",
PRINTF_IP_AS_4_INTS(ip), targetSlot->getPort()));

sendAProbe(targetSlot->getIP(), targetSlot->getPort(), m_localNodeNumber);
notifyTargetOfProbe(targetSlot);
setConnectionState(m_localNodeNumber, NATCONNECTIONSTATE_WAITINGFORRESPONSE);
} else {
DEBUG_LOG(("NAT::gotMangledPort - we are a netgear, not sending a PROBE yet."));
}
sendAProbe(targetSlot->getIP(), targetSlot->getPort(), m_localNodeNumber);
notifyTargetOfProbe(targetSlot);
setConnectionState(m_localNodeNumber, NATCONNECTIONSTATE_WAITINGFORRESPONSE);
}

void NAT::gotInternalAddress(Int nodeNumber, UnsignedInt address) {
Expand Down Expand Up @@ -1171,8 +1093,7 @@ void NAT::processGlobalMessage(Int slotNum, const char *options) {
DEBUG_LOG(("NAT::processGlobalMessage - got message from slot %d, message is \"%s\"", slotNum, ptr));
if (strncmp(ptr, "PROBED", strlen("PROBED")) == 0) {
// format: PROBED<node number>
// a probe has been sent at us, if we are waiting because of a netgear or something, we
// should start sending our own probes.
// a probe has been sent at us; notify probed node.
Int node = atoi(ptr + strlen("PROBED"));
if (node == m_targetNodeNumber) {
// make sure we're being probed by who we're supposed to be probed by.
Expand Down
1 change: 0 additions & 1 deletion Generals/Code/GameEngine/Include/Common/GlobalData.h
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Original file line number Diff line number Diff line change
Expand Up @@ -324,7 +324,6 @@ class GlobalData : public SubsystemInterface

UnsignedInt m_defaultIP; ///< preferred IP address for LAN
UnsignedInt m_firewallBehavior; ///< Last detected firewall behavior
Bool m_firewallSendDelay; ///< Use send delay for firewall connection negotiations
UnsignedInt m_firewallPortOverride; ///< User-specified port to be used
Short m_firewallPortAllocationDelta; ///< the port allocation delta last detected.

Expand Down
2 changes: 0 additions & 2 deletions Generals/Code/GameEngine/Source/Common/GlobalData.cpp
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Expand Up @@ -939,7 +939,6 @@ GlobalData::GlobalData()
// m_languageFilterPref = false;
m_languageFilterPref = true;
m_firewallBehavior = FirewallHelperClass::FIREWALL_TYPE_UNKNOWN;
m_firewallSendDelay = FALSE;
m_firewallPortOverride = 0;
m_firewallPortAllocationDelta = 0;
m_loadScreenDemo = FALSE;
Expand Down Expand Up @@ -1205,7 +1204,6 @@ void GlobalData::parseGameDataDefinition( INI* ini )
TheWritableGlobalData->m_drawScrollAnchor = optionPref.getDrawScrollAnchor();
TheWritableGlobalData->m_moveScrollAnchor = optionPref.getMoveScrollAnchor();
TheWritableGlobalData->m_defaultIP = optionPref.getLANIPAddress();
TheWritableGlobalData->m_firewallSendDelay = optionPref.getSendDelay();
TheWritableGlobalData->m_firewallBehavior = optionPref.getFirewallBehavior();
TheWritableGlobalData->m_firewallPortAllocationDelta = optionPref.getFirewallPortAllocationDelta();
TheWritableGlobalData->m_firewallPortOverride = optionPref.getFirewallPortOverride();
Expand Down
2 changes: 0 additions & 2 deletions ...de/GameEngine/Source/GameClient/GUI/EstablishConnectionsMenu/EstablishConnectionsMenu.cpp
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Expand Up @@ -124,8 +124,6 @@ void EstablishConnectionsMenu::setPlayerStatus(Int slot, NATConnectionState stat
DEBUG_ASSERTCRASH(control != nullptr, ("player status control for slot %d is null", slot));
return;
}
// if (state == NATCONNECTIONSTATE_NETGEARDELAY) {
// GadgetStaticTextSetText(control, TheGameText->fetch("GUI:NetgearDelay"));
if (state == NATCONNECTIONSTATE_WAITINGFORMANGLERRESPONSE) {
GadgetStaticTextSetText(control, TheGameText->fetch("GUI:WaitingForManglerResponse"));
} else if (state == NATCONNECTIONSTATE_WAITINGFORMANGLEDPORT) {
Expand Down
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