Mirrors/MeshCore-Solo
1
0
Fork 0
mirror of https://github.com/MarekZegare4/MeshCore-Solo.git synced 2026-07-29 16:28:11 +00:00
Code Issues Packages Projects Releases Wiki Activity

* support for sending 5-byte ACKs

Browse Source
This commit is contained in:
Scott Powell
2026-05-17 22:10:13 +10:00
parent 39b333656b
commit f6e6fdaa05
5 changed files with 31 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/helpers/BaseChatMesh.cpp
View File

@@ -38,9 +38,9 @@ mesh::Packet* BaseChatMesh::createSelfAdvert(const char* name, double lat, doubl
return createAdvert(self_id, app_data, app_data_len);
}
void BaseChatMesh::sendAckTo(const ContactInfo& dest, uint32_t ack_hash) {
void BaseChatMesh::sendAckTo(const ContactInfo& dest, const uint8_t* ack_hash, uint8_t ack_len) {
if (dest.out_path_len == OUT_PATH_UNKNOWN) {
mesh::Packet* ack = createAck(ack_hash);
mesh::Packet* ack = createAck(ack_hash, ack_len);
if (ack) sendFloodScoped(dest, ack, TXT_ACK_DELAY);
} else {
uint32_t d = TXT_ACK_DELAY;
@@ -50,7 +50,7 @@ void BaseChatMesh::sendAckTo(const ContactInfo& dest, uint32_t ack_hash) {
d += 300;
}
mesh::Packet* a2 = createAck(ack_hash);
mesh::Packet* a2 = createAck(ack_hash, ack_len);
if (a2) sendDirect(a2, dest.out_path, dest.out_path_len, d);
}
}
@@ -218,16 +218,18 @@ void BaseChatMesh::onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender
from.lastmod = getRTCClock()->getCurrentTime(); // update last heard time
onMessageRecv(from, packet, timestamp, (const char *) &data[5]); // let UI know
uint32_t ack_hash; // calc truncated hash of the message timestamp + text + sender pub_key, to prove to sender that we got it
mesh::Utils::sha256((uint8_t *) &ack_hash, 4, data, 5 + strlen((char *)&data[5]), from.id.pub_key, PUB_KEY_SIZE);
uint8_t ack_hash[5]; // calc truncated hash of the message timestamp + text + sender pub_key, to prove to sender that we got it
mesh::Utils::sha256(ack_hash, 4, data, 5 + strlen((char *)&data[5]), from.id.pub_key, PUB_KEY_SIZE);
// NEW: append (potential) extended attempt byte (to make packethash unique)
ack_hash[4] = data[len - 1];
if (packet->isRouteFlood()) {
// let this sender know path TO here, so they can use sendDirect(), and ALSO encode the ACK
mesh::Packet* path = createPathReturn(from.id, secret, packet->path, packet->path_len,
PAYLOAD_TYPE_ACK, (uint8_t *) &ack_hash, 4);
PAYLOAD_TYPE_ACK, (uint8_t *) &ack_hash, 5);
if (path) sendFloodScoped(from, path, TXT_ACK_DELAY);
} else {
sendAckTo(from, ack_hash);
sendAckTo(from, ack_hash, 5);
}
} else if (flags == TXT_TYPE_CLI_DATA) {
onCommandDataRecv(from, packet, timestamp, (const char *) &data[5]); // let UI know
@@ -254,7 +256,7 @@ void BaseChatMesh::onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender
PAYLOAD_TYPE_ACK, (uint8_t *) &ack_hash, 4);
if (path) sendFloodScoped(from, path, TXT_ACK_DELAY);
} else {
sendAckTo(from, ack_hash);
sendAckTo(from, (uint8_t *) &ack_hash);
}
} else {
MESH_DEBUG_PRINTLN("onPeerDataRecv: unsupported message type: %u", (uint32_t) flags);

2
src/helpers/BaseChatMesh.h
View File

@@ -72,7 +72,7 @@ class BaseChatMesh : public mesh::Mesh {
ConnectionInfo connections[MAX_CONNECTIONS];
mesh::Packet* composeMsgPacket(const ContactInfo& recipient, uint32_t timestamp, uint8_t attempt, const char *text, uint32_t& expected_ack);
void sendAckTo(const ContactInfo& dest, uint32_t ack_hash);
void sendAckTo(const ContactInfo& dest, const uint8_t* ack_hash, uint8_t ack_len=4);
protected:
BaseChatMesh(mesh::Radio& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, mesh::PacketManager& mgr, mesh::MeshTables& tables)

55
src/helpers/SimpleMeshTables.h
View File

@@ -6,22 +6,17 @@
#include <FS.h>
#endif
#define MAX_PACKET_HASHES 128
#define MAX_PACKET_ACKS 64
#define MAX_PACKET_HASHES (128+32)
class SimpleMeshTables : public mesh::MeshTables {
uint8_t _hashes[MAX_PACKET_HASHES*MAX_HASH_SIZE];
int _next_idx;
uint32_t _acks[MAX_PACKET_ACKS];
int _next_ack_idx;
uint32_t _direct_dups, _flood_dups;
public:
SimpleMeshTables() {
memset(_hashes, 0, sizeof(_hashes));
_next_idx = 0;
memset(_acks, 0, sizeof(_acks));
_next_ack_idx = 0;
_direct_dups = _flood_dups = 0;
}
@@ -29,37 +24,14 @@ public:
void restoreFrom(File f) {
f.read(_hashes, sizeof(_hashes));
f.read((uint8_t *) &_next_idx, sizeof(_next_idx));
f.read((uint8_t *) &_acks[0], sizeof(_acks));
f.read((uint8_t *) &_next_ack_idx, sizeof(_next_ack_idx));
}
void saveTo(File f) {
f.write(_hashes, sizeof(_hashes));
f.write((const uint8_t *) &_next_idx, sizeof(_next_idx));
f.write((const uint8_t *) &_acks[0], sizeof(_acks));
f.write((const uint8_t *) &_next_ack_idx, sizeof(_next_ack_idx));
}
#endif
bool hasSeen(const mesh::Packet* packet) override {
if (packet->getPayloadType() == PAYLOAD_TYPE_ACK) {
uint32_t ack;
memcpy(&ack, packet->payload, 4);
for (int i = 0; i < MAX_PACKET_ACKS; i++) {
if (ack == _acks[i]) {
if (packet->isRouteDirect()) {
_direct_dups++; // keep some stats
} else {
_flood_dups++;
}
return true;
}
}
_acks[_next_ack_idx] = ack;
_next_ack_idx = (_next_ack_idx + 1) % MAX_PACKET_ACKS; // cyclic table
return false;
}
uint8_t hash[MAX_HASH_SIZE];
packet->calculatePacketHash(hash);
@@ -81,25 +53,14 @@ public:
}
void clear(const mesh::Packet* packet) override {
if (packet->getPayloadType() == PAYLOAD_TYPE_ACK) {
uint32_t ack;
memcpy(&ack, packet->payload, 4);
for (int i = 0; i < MAX_PACKET_ACKS; i++) {
if (ack == _acks[i]) {
_acks[i] = 0;
break;
}
}
} else {
uint8_t hash[MAX_HASH_SIZE];
packet->calculatePacketHash(hash);
uint8_t hash[MAX_HASH_SIZE];
packet->calculatePacketHash(hash);
uint8_t* sp = _hashes;
for (int i = 0; i < MAX_PACKET_HASHES; i++, sp += MAX_HASH_SIZE) {
if (memcmp(hash, sp, MAX_HASH_SIZE) == 0) {
memset(sp, 0, MAX_HASH_SIZE);
break;
}
uint8_t* sp = _hashes;
for (int i = 0; i < MAX_PACKET_HASHES; i++, sp += MAX_HASH_SIZE) {
if (memcmp(hash, sp, MAX_HASH_SIZE) == 0) {
memset(sp, 0, MAX_HASH_SIZE);
break;
}
}
}