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Prevent packet loops and duplicates

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Implement a "seen packets" table to track packets that have already been processed by the serial bridge.

This prevents packets from being re-transmitted over the serial link if they have already been seen, and it stops inbound packets from serial from being re-injected into the mesh if they are duplicates.

Duplicate inbound packets are now freed to prevent memory leaks.
This commit is contained in:
João Brázio 2025-09-04 23:50:13 +01:00
parent 1948d284a0
commit ee3c4baea5
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GPG key ID: 56A1490716A324DD
2 changed files with 13 additions and 5 deletions
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src/helpers/SerialBridge.h
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@ -1,6 +1,7 @@
#pragma once
#include "helpers/AbstractBridge.h"
#include "helpers/SimpleMeshTables.h"
#include <Stream.h>
#ifdef BRIDGE_OVER_SERIAL
@ -25,6 +26,7 @@ public:
private:
Stream* _serial;
mesh::PacketManager* _mgr;
SimpleMeshTables _seen_packets;
};
#endif