meshcore-dev/MeshCore
1
0
Fork 0
mirror of https://github.com/meshcore-dev/MeshCore.git synced 2026-04-20 22:13:47 +00:00
Code Issues Projects Releases Packages Wiki Activity

* proposal for 'Extended Trace' packets. Using 'flags' byte, lower 2 bits, for path hash size.

Browse source
This commit is contained in:
Scott Powell 2025-11-21 15:44:31 +11:00
parent f5a56c537f
commit b33d226c58
3 changed files with 40 additions and 24 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/Mesh.cpp
View file

@ -52,14 +52,15 @@ DispatcherAction Mesh::onRecvPacket(Packet* pkt) {
uint32_t auth_code;
memcpy(&auth_code, &pkt->payload[i], 4); i += 4;
uint8_t flags = pkt->payload[i++];
uint8_t path_sz = flags & 0x03; // NEW v1.11+: lower 2 bits is path hash size
uint8_t len = pkt->payload_len - i;
if (pkt->path_len >= len) { // TRACE has reached end of given path
uint8_t offset = pkt->path_len << path_sz;
if (offset >= len) { // TRACE has reached end of given path
onTraceRecv(pkt, trace_tag, auth_code, flags, pkt->path, &pkt->payload[i], len);
} else if (self_id.isHashMatch(&pkt->payload[i + pkt->path_len]) && allowPacketForward(pkt) && !_tables->hasSeen(pkt)) {
} else if (self_id.isHashMatch(&pkt->payload[i + offset], 1 << path_sz) && allowPacketForward(pkt) && !_tables->hasSeen(pkt)) {
// append SNR (Not hash!)
pkt->path[pkt->path_len] = (int8_t) (pkt->getSNR()*4);
pkt->path_len += PATH_HASH_SIZE;
pkt->path[pkt->path_len++] = (int8_t) (pkt->getSNR()*4);
uint32_t d = getDirectRetransmitDelay(pkt);
return ACTION_RETRANSMIT_DELAYED(5, d); // schedule with priority 5 (for now), maybe make configurable?