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* companion: better incoming ACK processing (match prev attempts)

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This commit is contained in:
Scott Powell
2025-03-07 15:09:29 +11:00
parent e534e1b529
commit 790898dbc5
1 changed files with 30 additions and 16 deletions
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46
examples/companion_radio/main.cpp
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@@ -210,12 +210,10 @@ class MyMesh : public BaseChatMesh {
RADIO_CLASS* _phy;
IdentityStore* _identity_store;
NodePrefs _prefs;
uint32_t expected_ack_crc; // TODO: keep table of expected ACKs
uint32_t pending_login;
uint32_t pending_status;
mesh::GroupChannel* _public;
BaseSerialInterface* _serial;
unsigned long last_msg_sent;
ContactsIterator _iter;
uint32_t _iter_filter_since;
uint32_t _most_recent_lastmod;
@@ -232,6 +230,14 @@ class MyMesh : public BaseChatMesh {
int offline_queue_len;
Frame offline_queue[OFFLINE_QUEUE_SIZE];
struct AckTableEntry {
unsigned long msg_sent;
uint32_t ack;
};
#define EXPECTED_ACK_TABLE_SIZE 8
AckTableEntry expected_ack_table[EXPECTED_ACK_TABLE_SIZE]; // circular table
int next_ack_idx;
void loadMainIdentity(mesh::RNG& trng) {
if (!_identity_store->load("_main", self_id)) {
self_id = mesh::LocalIdentity(&trng); // create new random identity
@@ -458,17 +464,19 @@ protected:
}
bool processAck(const uint8_t *data) override {
// TODO: see if matches any in a table
if (memcmp(data, &expected_ack_crc, 4) == 0) { // got an ACK from recipient
out_frame[0] = PUSH_CODE_SEND_CONFIRMED;
memcpy(&out_frame[1], data, 4);
uint32_t trip_time = _ms->getMillis() - last_msg_sent;
memcpy(&out_frame[5], &trip_time, 4);
_serial->writeFrame(out_frame, 9);
// see if matches any in a table
for (int i = 0; i < EXPECTED_ACK_TABLE_SIZE; i++) {
if (memcmp(data, &expected_ack_table[i].ack, 4) == 0) { // got an ACK from recipient
out_frame[0] = PUSH_CODE_SEND_CONFIRMED;
memcpy(&out_frame[1], data, 4);
uint32_t trip_time = _ms->getMillis() - expected_ack_table[i].msg_sent;
memcpy(&out_frame[5], &trip_time, 4);
_serial->writeFrame(out_frame, 9);
// NOTE: the same ACK can be received multiple times!
expected_ack_crc = 0; // reset our expected hash, now that we have received ACK
return true;
// NOTE: the same ACK can be received multiple times!
expected_ack_table[i].ack = 0; // clear expected hash, now that we have received ACK
return true;
}
}
return checkConnectionsAck(data);
}
@@ -637,6 +645,7 @@ public:
app_target_ver = 0;
_identity_store = NULL;
pending_login = pending_status = 0;
next_ack_idx = 0;
// defaults
memset(&_prefs, 0, sizeof(_prefs));
@@ -824,21 +833,26 @@ public:
uint32_t est_timeout;
text[tlen] = 0; // ensure null
int result;
uint32_t expected_ack;
if (txt_type == TXT_TYPE_CLI_DATA) {
result = sendCommandData(*recipient, msg_timestamp, attempt, text, est_timeout);
expected_ack_crc = 0; // no Ack expected
expected_ack = 0; // no Ack expected
} else {
result = sendMessage(*recipient, msg_timestamp, attempt, text, expected_ack_crc, est_timeout);
result = sendMessage(*recipient, msg_timestamp, attempt, text, expected_ack, est_timeout);
}
// TODO: add expected ACK to table
if (result == MSG_SEND_FAILED) {
writeErrFrame();
} else {
last_msg_sent = _ms->getMillis();
if (expected_ack) {
expected_ack_table[next_ack_idx].msg_sent = _ms->getMillis(); // add to circular table
expected_ack_table[next_ack_idx].ack = expected_ack;
next_ack_idx = (next_ack_idx + 1) % EXPECTED_ACK_TABLE_SIZE;
}
out_frame[0] = RESP_CODE_SENT;
out_frame[1] = (result == MSG_SEND_SENT_FLOOD) ? 1 : 0;
memcpy(&out_frame[2], &expected_ack_crc, 4);
memcpy(&out_frame[2], &expected_ack, 4);
memcpy(&out_frame[6], &est_timeout, 4);
_serial->writeFrame(out_frame, 10);
}