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Avoid making duplicate NAT-PMP requests to a UPnP gateway that was disconnected

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This commit is contained in:
Cameron Gutman 2018-11-07 21:13:27 -08:00
parent 9dd169ba02
commit c47014887a
1 changed files with 8 additions and 0 deletions
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8
miss/miss.cpp
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@ -606,6 +606,14 @@ void UpdatePortMappingsForTarget(bool enable, char* targetAddressIP4, char* inte
tryNatPmp = false;
}
// Don't try with NAT-PMP if the UPnP attempt for the same gateway failed due to being
// disconnected or some other error. This will avoid overwriting UPnP rules on a disconnected IGD
// with duplicate NAT-PMP rules. We want to allow deletion of NAT-PMP rules in any case though.
if (tryNatPmp && enable && !strcmp(upstreamAddrNatPmp, upstreamAddrNatPmp)) {
printf("Not attempting to use NAT-PMP to talk to the same UPnP gateway\n");
tryNatPmp = false;
}
if (tryNatPmp) {
bool success = true;
for (int i = 0; i < ARRAYSIZE(k_Ports); i++) {