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

bootstrap RTC from contact.lastmod and improve slot overwrite logic

Browse source 
slot overwrite logic can now safely use contact.lastmod to find oldest contact for overwrite
This commit is contained in:
taco 2026-01-13 04:27:27 +11:00
parent 741564dd48
commit df6687034a
3 changed files with 18 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

23
src/helpers/BaseChatMesh.cpp
View file

@ -55,17 +55,29 @@ void BaseChatMesh::sendAckTo(const ContactInfo& dest, uint32_t ack_hash) {
}
}
void BaseChatMesh::bootstrapRTCfromContacts() {
uint32_t latest = 0;
for (int i = 0; i < num_contacts; i++) {
if (contacts[i].lastmod > latest) {
latest = contacts[i].lastmod;
}
}
if (latest != 0) {
getRTCClock()->setCurrentTime(latest + 1);
}
}
ContactInfo* BaseChatMesh::allocateContactSlot() {
if (num_contacts < MAX_CONTACTS) {
return &contacts[num_contacts++];
} else if (shouldOverwriteWhenFull()) {
// Find oldest non-favourite contact by last_advert_timestamp
// Find oldest non-favourite contact by oldest lastmod timestamp
int oldest_idx = -1;
uint32_t oldest_timestamp = 0xFFFFFFFF;
uint32_t oldest_lastmod = 0xFFFFFFFF;
for (int i = 0; i < num_contacts; i++) {
bool is_favourite = (contacts[i].flags & 0x01) != 0;
if (!is_favourite && contacts[i].last_advert_timestamp < oldest_timestamp) {
oldest_timestamp = contacts[i].last_advert_timestamp;
if (!is_favourite && contacts[i].lastmod < oldest_lastmod) {
oldest_lastmod = contacts[i].lastmod;
oldest_idx = i;
}
}
@ -750,9 +762,6 @@ bool BaseChatMesh::addContact(const ContactInfo& contact) {
ContactInfo* dest = allocateContactSlot();
if (dest) {
*dest = contact;
if (dest->last_advert_timestamp == 0) { // ensure non-zero timestamp to prevent contacts added from discover list being considered 'oldest'
dest->last_advert_timestamp = getRTCClock()->getCurrentTimeUnique();
}
dest->shared_secret_valid = false; // mark shared_secret as needing calculation
return true; // success
}