update Mqtt Client

CHANGELOG_LATEST.md

@@ -6,6 +6,12 @@
 
 ## Added
 
+- rssi in Network Status Page
+
 ## Fixed
 
+- issue in espMqttClient on low mem
+
 ## Changed
+
+- mqtt free mem check 60k

interface/package.json

@@ -27,7 +27,7 @@
     "@preact/compat": "^17.1.2",
     "@prefresh/vite": "^2.4.1",
     "@table-library/react-table-library": "4.1.7",
-    "@types/lodash-es": "^4.17.8",
+    "@types/lodash-es": "^4.17.9",
     "@types/node": "^20.5.7",
     "@types/react": "^18.2.21",
     "@types/react-dom": "^18.2.7",

interface/src/framework/network/NetworkStatusForm.tsx

@@ -114,7 +114,7 @@ const NetworkStatusForm: FC = () => {
                     <SettingsInputAntennaIcon />
                   </Avatar>
                 </ListItemAvatar>
-                <ListItemText primary="SSID" secondary={data.ssid} />
+                <ListItemText primary="SSID (RSSI)" secondary={data.ssid + ' (' + data.rssi + ' dBm)'} />
               </ListItem>
               <Divider variant="inset" component="li" />
             </>

interface/yarn.lock

@@ -1339,12 +1339,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@types/lodash-es@npm:^4.17.8":
-  version: 4.17.8
-  resolution: "@types/lodash-es@npm:4.17.8"
+"@types/lodash-es@npm:^4.17.9":
+  version: 4.17.9
+  resolution: "@types/lodash-es@npm:4.17.9"
   dependencies:
     "@types/lodash": "*"
-  checksum: 950771d406c842814dd22217adba5e01bd06b3c21e97900d3c3816f38580e132894400b5d83a7962645fa284d8478614bdcc50755255ad15024311b7b8ed8520
+  checksum: 9fe82df0ec14e2aad50a1bf6488c4457e3378fcc77f5806fbc8035904ef0848b70e50037b13d9bddb66d3a30b425d2998a4a438a5024efe7431b63fde0920378
   languageName: node
   linkType: hard
 
@@ -1586,7 +1586,7 @@ __metadata:
     "@prefresh/vite": ^2.4.1
     "@table-library/react-table-library": 4.1.7
     "@types/babel__core": ^7
-    "@types/lodash-es": ^4.17.8
+    "@types/lodash-es": ^4.17.9
     "@types/node": ^20.5.7
     "@types/react": ^18.2.21
     "@types/react-dom": ^18.2.7

lib/espMqttClient/src/MqttClient.cpp

@@ -103,7 +103,7 @@ bool MqttClient::disconnected() const {
 }
 
 bool MqttClient::connect() {
-    bool result = true;
+    bool result = false;
     if (_state == State::disconnected) {
         EMC_SEMAPHORE_TAKE();
         if (_addPacketFront(_cleanSession,
@@ -116,19 +116,21 @@ bool MqttClient::connect() {
                             _willPayloadLength,
                             (uint16_t)(_keepAlive / 1000), // 32b to 16b doesn't overflow because it comes from 16b orignally
                             _clientId)) {
+            result = true;
+            _state = State::connectingTcp1;
 #if defined(ARDUINO_ARCH_ESP32)
             if (_useInternalTask == espMqttClientTypes::UseInternalTask::YES) {
                 vTaskResume(_taskHandle);
             }
 #endif
-            _state = State::connectingTcp1;
         } else {
             EMC_SEMAPHORE_GIVE();
             emc_log_e("Could not create CONNECT packet");
             _onError(0, Error::OUT_OF_MEMORY);
-            result = false;
         }
         EMC_SEMAPHORE_GIVE();
+    } else if (_state <= State::connected) { // already connected or connecting
+        result = true;
     }
     return result;
 }
@@ -196,6 +198,14 @@ const char * MqttClient::getClientId() const {
     return _clientId;
 }
 
+size_t MqttClient::queueSize() {
+    size_t ret = 0;
+    EMC_SEMAPHORE_TAKE();
+    ret = _outbox.size();
+    EMC_SEMAPHORE_GIVE();
+    return ret;
+}
+
 void MqttClient::loop() {
     switch ((State)_state) { // modified by proddy for EMS-ESP compiling standalone
     case State::disconnected:
@@ -335,7 +345,6 @@ int MqttClient::_sendPacket() {
     size_t wantToWrite = 0;
     size_t written     = 0;
     if (packet && (wantToWrite == written)) {
-        // mixing signed with unsigned here but safe because of MQTT packet size limits
         wantToWrite = packet->packet.available(_bytesSent);
         if (wantToWrite == 0) {
             EMC_SEMAPHORE_GIVE();
@@ -630,9 +639,6 @@ void MqttClient::_onPubcomp() {
         // if it doesn't match the ID, return
         if ((it.get()->packet.packetType()) == PacketType.PUBREL) {
             if (it.get()->packet.packetId() == idToMatch) {
-                // if (!_addPacket(PacketType.PUBCOMP, idToMatch)) {
-                //     emc_log_e("Could not create PUBCOMP packet");
-                // }
                 callback = true;
                 _outbox.remove(it);
                 break;
@@ -697,20 +703,6 @@ void MqttClient::_onUnsuback() {
     }
 }
 
-uint16_t MqttClient::getQueue() const {
-    EMC_SEMAPHORE_TAKE();
-    espMqttClientInternals::Outbox<OutgoingPacket>::Iterator it    = _outbox.front();
-    uint16_t                                                 count = 0;
-    while (it) {
-        // if (it.get()->packet.packetType() == PacketType.PUBLISH) {
-        ++count;
-        // }
-        ++it;
-    }
-    EMC_SEMAPHORE_GIVE();
-    return count;
-}
-
 void MqttClient::_clearQueue(int clearData) {
     emc_log_i("clearing queue (clear session: %d)", clearData);
     EMC_SEMAPHORE_TAKE();

lib/espMqttClient/src/MqttClient.h

@@ -65,7 +65,7 @@ class MqttClient {
     uint16_t     publish(const char * topic, uint8_t qos, bool retain, espMqttClientTypes::PayloadCallback callback, size_t length);
     void         clearQueue(bool deleteSessionData = false); // Not MQTT compliant and may cause unpredictable results when `deleteSessionData` = true!
     const char * getClientId() const;
-    uint16_t     getQueue() const;
+    size_t       queueSize(); // No const because of mutex
     void         loop();
 
   protected:
@@ -131,8 +131,9 @@ class MqttClient {
         uint32_t                       timeSent;
         espMqttClientInternals::Packet packet;
         template <typename... Args>
-        OutgoingPacket(uint32_t t, espMqttClientTypes::Error error, Args &&... args)
-            : timeSent(t)
+        OutgoingPacket(uint32_t t, espMqttClientTypes::Error & error, Args &&... args)
+            : // NOLINT(runtime/references)
+            timeSent(t)
             , packet(error, std::forward<Args>(args)...) {
         }
     };
@@ -150,18 +151,26 @@ class MqttClient {
     bool _addPacket(Args &&... args) {
         espMqttClientTypes::Error                                error(espMqttClientTypes::Error::SUCCESS);
         espMqttClientInternals::Outbox<OutgoingPacket>::Iterator it = _outbox.emplace(0, error, std::forward<Args>(args)...);
-        if (it && error == espMqttClientTypes::Error::SUCCESS)
+        if (it && error == espMqttClientTypes::Error::SUCCESS) {
             return true;
-        return false;
+        } else {
+            if (it)
+                _outbox.remove(it);
+            return false;
+        }
     }
 
     template <typename... Args>
     bool _addPacketFront(Args &&... args) {
         espMqttClientTypes::Error                                error(espMqttClientTypes::Error::SUCCESS);
         espMqttClientInternals::Outbox<OutgoingPacket>::Iterator it = _outbox.emplaceFront(0, error, std::forward<Args>(args)...);
-        if (it && error == espMqttClientTypes::Error::SUCCESS)
+        if (it && error == espMqttClientTypes::Error::SUCCESS) {
             return true;
-        return false;
+        } else {
+            if (it)
+                _outbox.remove(it);
+            return false;
+        }
     }
 
     void _checkOutbox();

lib/espMqttClient/src/Outbox.h

@@ -163,6 +163,16 @@ class Outbox {
     return false;
   }
 
+  size_t size() const {
+    Node* n = _first;
+    size_t count = 0;
+    while (n) {
+      n = n->next;
+      ++count;
+    }
+    return count;
+  }
+
  private:
   Node* _first;
   Node* _last;

lib/espMqttClient/src/Packets/Packet.cpp

@@ -100,7 +100,7 @@ Packet::Packet(espMqttClientTypes::Error& error,
   (password ? 2 + strlen(password) : 0);
 
   // allocate memory
-  if (!_allocate(remainingLength)) {
+  if (!_allocate(remainingLength, false)) {
     error = espMqttClientTypes::Error::OUT_OF_MEMORY;
     return;
   }
@@ -300,8 +300,8 @@ Packet::Packet(espMqttClientTypes::Error& error, MQTTPacketType type)
 }
 
 
-bool Packet::_allocate(size_t remainingLength) {
-  if (EMC_GET_FREE_MEMORY() < EMC_MIN_FREE_MEMORY) {
+bool Packet::_allocate(size_t remainingLength, bool check) {
+  if (check && EMC_GET_FREE_MEMORY() < EMC_MIN_FREE_MEMORY) {
     emc_log_w("Packet buffer not allocated: low memory");
     return false;
   }

lib/espMqttClient/src/Packets/Packet.h

@@ -133,7 +133,7 @@ class Packet {
 
  private:
   // pass remainingLength = total size - header - remainingLengthLength!
-  bool _allocate(size_t remainingLength);
+  bool _allocate(size_t remainingLength, bool check = true);
 
   // fills header and returns index of next available byte in buffer
   size_t _fillPublishHeader(uint16_t packetId,

src/mqtt.cpp

@@ -124,6 +124,8 @@ void Mqtt::resubscribe() {
 
 // Main MQTT loop - sends out top item on publish queue
 void Mqtt::loop() {
+    queuecount_ = mqttClient_->queueSize();
+
     // exit if MQTT is not enabled or if there is no network connection
     if (!connected()) {
         return;
@@ -142,7 +144,7 @@ void Mqtt::loop() {
         EMSESP::publish_sensor_values(false);
     }
 
-    queuecount_ = mqttClient_->getQueue();
+    // wait for empty queue before sending scheduled device messages
     if (queuecount_ > 0) {
         return;
     }
@@ -482,7 +484,7 @@ void Mqtt::on_connect() {
 
     connecting_ = true;
     connectcount_++; // count # reconnects. not currently used.
-    queuecount_ = 0;
+    queuecount_ = mqttClient_->queueSize();
 
     load_settings(); // reload MQTT settings - in case they have changes
 
@@ -510,7 +512,7 @@ void Mqtt::on_connect() {
     // publish to the last will topic (see Mqtt::start() function) to say we're alive
     queue_publish_retain("status", "online", true); // with retain on
 
-    mqtt_publish_fails_ = 0; // reset fail count to 0
+    // mqtt_publish_fails_ = 0; // reset fail count to 0
 }
 
 // Home Assistant Discovery - the main master Device called EMS-ESP
@@ -590,14 +592,23 @@ bool Mqtt::queue_message(const uint8_t operation, const std::string & topic, con
     if (!mqtt_enabled_ || topic.empty()) {
         return false; // quit, not using MQTT
     }
+    // check free mem
+    if (ESP.getFreeHeap() < 60 * 1204) {
+        if (operation == Operation::PUBLISH) {
+            mqtt_message_id_++;
+            mqtt_publish_fails_++;
+        }
+        LOG_DEBUG("%s failed: low memory", operation == Operation::PUBLISH ? "Publish" : operation == Operation::SUBSCRIBE ? "Subscribe" : "Unsubscribe");
+        return false; // quit
+    }
 
     uint16_t packet_id = 0;
     char     fulltopic[MQTT_TOPIC_MAX_SIZE];
 
     if (topic.find(discovery_prefix_) == 0) {
-        strlcpy(fulltopic, topic.c_str(), sizeof(fulltopic)); // leave topic as it is
+        strlcpy(fulltopic, topic.c_str(), sizeof(fulltopic)); // leave discovery topic as it is
     } else {
-        // it's a discovery topic, added the mqtt base to the topic path
+        // it's not a discovery topic, added the mqtt base to the topic path
         snprintf(fulltopic, sizeof(fulltopic), "%s/%s", mqtt_base_.c_str(), topic.c_str()); // uses base
     }
 

src/version.h

@@ -1 +1 @@
-#define EMSESP_APP_VERSION "3.7.0-dev.1"
+#define EMSESP_APP_VERSION "3.7.0-dev.2"

src/web/WebEntityService.cpp

@@ -31,6 +31,7 @@ WebEntityService::WebEntityService(AsyncWebServer * server, FS * fs, SecurityMan
 void WebEntityService::begin() {
     _fsPersistence.readFromFS();
     EMSESP::logger().info("Starting Custom entity service");
+    Mqtt::subscribe(EMSdevice::DeviceType::CUSTOM, "custom/#", nullptr); // use empty function callback
 }
 
 // this creates the entity file, saving it to the FS

src/web/WebSchedulerService.cpp

@@ -31,6 +31,7 @@ WebSchedulerService::WebSchedulerService(AsyncWebServer * server, FS * fs, Secur
 void WebSchedulerService::begin() {
     _fsPersistence.readFromFS();
     EMSESP::logger().info("Starting Scheduler service");
+    Mqtt::subscribe(EMSdevice::DeviceType::SCHEDULER, "scheduler/#", nullptr); // use empty function callback
 }
 
 // this creates the scheduler file, saving it to the FS

src/web/WebStatusService.cpp

@@ -166,9 +166,9 @@ void WebStatusService::webStatusService(AsyncWebServerRequest * request) {
     if (Mqtt::enabled()) {
         statJson       = statsJson.createNestedObject();
         statJson["id"] = 5;
-        statJson["s"]  = Mqtt::publish_count();
+        statJson["s"]  = Mqtt::publish_count() - Mqtt::publish_fails();
         statJson["f"]  = Mqtt::publish_fails();
-        statJson["q"]  = Mqtt::publish_count() == 0 ? 100 : 100 - (uint8_t)((100 * Mqtt::publish_fails()) / (Mqtt::publish_count() + Mqtt::publish_fails()));
+        statJson["q"]  = Mqtt::publish_count() == 0 ? 100 : 100 - (uint8_t)((100 * Mqtt::publish_fails()) / Mqtt::publish_count());
     }
 
     statJson       = statsJson.createNestedObject();