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fix board reboot due to forwarding packets we don't have keys for

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This commit is contained in:
Kevin Hester 2021-03-13 08:29:58 +08:00
parent a5ed607261
commit 3e6817cd18
1 changed files with 10 additions and 2 deletions
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12
src/mesh/ReliableRouter.cpp
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@ -34,11 +34,19 @@ bool ReliableRouter::shouldFilterReceived(const MeshPacket *p)
// We are seeing someone rebroadcast one of our broadcast attempts.
// If this is the first time we saw this, cancel any retransmissions we have queued up and generate an internal ack for
// the original sending process.
if (stopRetransmission(getFrom(p), p->id)) {
// FIXME - we might want to turn off this "optimization", it does save lots of airtime but it assumes that once we've heard one
// one adjacent node hear our packet that a) probably other adjacent nodes heard it and b) we can trust those nodes to reach
// our destination. Both of which might be incorrect.
auto key = GlobalPacketId(getFrom(p), p->id);
auto old = findPendingPacket(key);
if (old) {
DEBUG_MSG("generating implicit ack\n");
// NOTE: we do NOT check p->wantAck here because p is the INCOMING rebroadcast and that packet is not expected to be
// marked as wantAck
sendAckNak(Routing_Error_NONE, getFrom(p), p->id, p->channel);
sendAckNak(Routing_Error_NONE, getFrom(p), p->id, old->packet->channel);
stopRetransmission(key);
}
}