Limit flood advert packet forwarding, implements #1223

2026-01-07 21:24:25 +01:00
parent 5684b4f1b8
commit 971b3f414f
1 changed files with 8 additions and 0 deletions
--- a/examples/simple_repeater/MyMesh.cpp
+++ b/examples/simple_repeater/MyMesh.cpp
@@ -434,6 +434,14 @@ bool MyMesh::allowPacketForward(const mesh::Packet *packet) {
      return false;
    }
  }
+  // Limit flood advert paket forwarding using a probabilistic reduction defined by P(h) = 0.308^(hops-1)
+  // https://github.com/meshcore-dev/MeshCore/issues/1223
+  double_t roll_dice = (double)rand() / RAND_MAX;
+  double_t forw_prob = pow(0.308, packet->path_len - 1);
+  if (packet->getPayloadType() == PAYLOAD_TYPE_ADVERT && packet->isRouteFlood() && roll_dice > forw_prob)
+    return false;
+
+  // all other packets
  return true;
 }