MQTT会话超时与网络错误处理

main/application.cc

@@ -302,12 +302,12 @@ void Application::StartListening() {
 }
 
 void Application::StopListening() {
-    if (device_state_ == kDeviceStateListening) {
-        Schedule([this]() {
+    Schedule([this]() {
+        if (device_state_ == kDeviceStateListening) {
             protocol_->SendStopListening();
             SetDeviceState(kDeviceStateIdle);
-        });
-    }
+        }
+    });
 }
 
 void Application::Start() {

main/protocols/mqtt_protocol.cc

@@ -28,10 +28,10 @@ MqttProtocol::~MqttProtocol() {
 }
 
 void MqttProtocol::Start() {
-    StartMqttClient();
+    StartMqttClient(false);
 }
 
-bool MqttProtocol::StartMqttClient() {
+bool MqttProtocol::StartMqttClient(bool report_error) {
     if (mqtt_ != nullptr) {
         ESP_LOGW(TAG, "Mqtt client already started");
         delete mqtt_;
@@ -45,9 +45,9 @@ bool MqttProtocol::StartMqttClient() {
     publish_topic_ = settings.GetString("publish_topic");
 
     if (endpoint_.empty()) {
-        ESP_LOGE(TAG, "MQTT endpoint is not specified");
-        if (on_network_error_ != nullptr) {
-            on_network_error_(Lang::Strings::SERVER_NOT_FOUND);
+        ESP_LOGW(TAG, "MQTT endpoint is not specified");
+        if (report_error) {
+            SetError(Lang::Strings::SERVER_NOT_FOUND);
         }
         return false;
     }
@@ -76,6 +76,7 @@ bool MqttProtocol::StartMqttClient() {
             ParseServerHello(root);
         } else if (strcmp(type->valuestring, "goodbye") == 0) {
             auto session_id = cJSON_GetObjectItem(root, "session_id");
+            ESP_LOGI(TAG, "Received goodbye message, session_id: %s", session_id ? session_id->valuestring : "null");
             if (session_id == nullptr || session_id_ == session_id->valuestring) {
                 Application::GetInstance().Schedule([this]() {
                     CloseAudioChannel();
@@ -85,14 +86,13 @@ bool MqttProtocol::StartMqttClient() {
             on_incoming_json_(root);
         }
         cJSON_Delete(root);
+        last_incoming_time_ = std::chrono::steady_clock::now();
     });
 
     ESP_LOGI(TAG, "Connecting to endpoint %s", endpoint_.c_str());
     if (!mqtt_->Connect(endpoint_, 8883, client_id_, username_, password_)) {
         ESP_LOGE(TAG, "Failed to connect to endpoint");
-        if (on_network_error_ != nullptr) {
-            on_network_error_(Lang::Strings::SERVER_NOT_CONNECTED);
-        }
+        SetError(Lang::Strings::SERVER_NOT_CONNECTED);
         return false;
     }
 
@@ -105,10 +105,8 @@ void MqttProtocol::SendText(const std::string& text) {
         return;
     }
     if (!mqtt_->Publish(publish_topic_, text)) {
-        ESP_LOGE(TAG, "Failed to publish message");
-        if (on_network_error_ != nullptr) {
-            on_network_error_(Lang::Strings::SERVER_ERROR);
-        }
+        ESP_LOGE(TAG, "Failed to publish message: %s", text.c_str());
+        SetError(Lang::Strings::SERVER_ERROR);
     }
 }
 
@@ -159,11 +157,12 @@ void MqttProtocol::CloseAudioChannel() {
 bool MqttProtocol::OpenAudioChannel() {
     if (mqtt_ == nullptr || !mqtt_->IsConnected()) {
         ESP_LOGI(TAG, "MQTT is not connected, try to connect now");
-        if (!StartMqttClient()) {
+        if (!StartMqttClient(true)) {
             return false;
         }
     }
 
+    error_occurred_ = false;
     session_id_ = "";
     xEventGroupClearBits(event_group_handle_, MQTT_PROTOCOL_SERVER_HELLO_EVENT);
 
@@ -181,9 +180,7 @@ bool MqttProtocol::OpenAudioChannel() {
     EventBits_t bits = xEventGroupWaitBits(event_group_handle_, MQTT_PROTOCOL_SERVER_HELLO_EVENT, pdTRUE, pdFALSE, pdMS_TO_TICKS(10000));
     if (!(bits & MQTT_PROTOCOL_SERVER_HELLO_EVENT)) {
         ESP_LOGE(TAG, "Failed to receive server hello");
-        if (on_network_error_ != nullptr) {
-            on_network_error_(Lang::Strings::SERVER_TIMEOUT);
-        }
+        SetError(Lang::Strings::SERVER_TIMEOUT);
         return false;
     }
 
@@ -226,6 +223,7 @@ bool MqttProtocol::OpenAudioChannel() {
             on_incoming_audio_(std::move(decrypted));
         }
         remote_sequence_ = sequence;
+        last_incoming_time_ = std::chrono::steady_clock::now();
     });
 
     udp_->Connect(udp_server_, udp_port_);
@@ -298,5 +296,5 @@ std::string MqttProtocol::DecodeHexString(const std::string& hex_string) {
 }
 
 bool MqttProtocol::IsAudioChannelOpened() const {
-    return udp_ != nullptr;
+    return udp_ != nullptr && !error_occurred_ && !IsTimeout();
 }

main/protocols/mqtt_protocol.h

@@ -50,7 +50,7 @@ private:
     uint32_t local_sequence_;
     uint32_t remote_sequence_;
 
-    bool StartMqttClient();
+    bool StartMqttClient(bool report_error=false);
     void ParseServerHello(const cJSON* root);
     std::string DecodeHexString(const std::string& hex_string);
 

main/protocols/protocol.cc

@@ -24,6 +24,13 @@ void Protocol::OnNetworkError(std::function<void(const std::string& message)> ca
     on_network_error_ = callback;
 }
 
+void Protocol::SetError(const std::string& message) {
+    error_occurred_ = true;
+    if (on_network_error_ != nullptr) {
+        on_network_error_(message);
+    }
+}
+
 void Protocol::SendAbortSpeaking(AbortReason reason) {
     std::string message = "{\"session_id\":\"" + session_id_ + "\",\"type\":\"abort\"";
     if (reason == kAbortReasonWakeWordDetected) {
@@ -68,3 +75,14 @@ void Protocol::SendIotStates(const std::string& states) {
     SendText(message);
 }
 
+bool Protocol::IsTimeout() const {
+    const int kTimeoutSeconds = 120;
+    auto now = std::chrono::steady_clock::now();
+    auto duration = std::chrono::duration_cast<std::chrono::seconds>(now - last_incoming_time_);
+    bool timeout = duration.count() > kTimeoutSeconds;
+    if (timeout) {
+        ESP_LOGE(TAG, "Channel timeout %lld seconds", duration.count());
+    }
+    return timeout;
+}
+

main/protocols/protocol.h

@@ -4,6 +4,7 @@
 #include <cJSON.h>
 #include <string>
 #include <functional>
+#include <chrono>
 
 struct BinaryProtocol3 {
     uint8_t type;
@@ -60,9 +61,13 @@ protected:
     std::function<void(const std::string& message)> on_network_error_;
 
     int server_sample_rate_ = 16000;
+    bool error_occurred_ = false;
     std::string session_id_;
+    std::chrono::time_point<std::chrono::steady_clock> last_incoming_time_;
 
     virtual void SendText(const std::string& text) = 0;
+    virtual void SetError(const std::string& message);
+    virtual bool IsTimeout() const;
 };
 
 #endif // PROTOCOL_H

main/protocols/websocket_protocol.cc

@@ -38,11 +38,14 @@ void WebsocketProtocol::SendText(const std::string& text) {
         return;
     }
 
-    websocket_->Send(text);
+    if (!websocket_->Send(text)) {
+        ESP_LOGE(TAG, "Failed to send text: %s", text.c_str());
+        SetError(Lang::Strings::SERVER_ERROR);
+    }
 }
 
 bool WebsocketProtocol::IsAudioChannelOpened() const {
-    return websocket_ != nullptr && websocket_->IsConnected();
+    return websocket_ != nullptr && websocket_->IsConnected() && !error_occurred_ && !IsTimeout();
 }
 
 void WebsocketProtocol::CloseAudioChannel() {
@@ -57,6 +60,7 @@ bool WebsocketProtocol::OpenAudioChannel() {
         delete websocket_;
     }
 
+    error_occurred_ = false;
     std::string url = CONFIG_WEBSOCKET_URL;
     std::string token = "Bearer " + std::string(CONFIG_WEBSOCKET_ACCESS_TOKEN);
     websocket_ = Board::GetInstance().CreateWebSocket();
@@ -87,6 +91,7 @@ bool WebsocketProtocol::OpenAudioChannel() {
             }
             cJSON_Delete(root);
         }
+        last_incoming_time_ = std::chrono::steady_clock::now();
     });
 
     websocket_->OnDisconnected([this]() {
@@ -98,9 +103,7 @@ bool WebsocketProtocol::OpenAudioChannel() {
 
     if (!websocket_->Connect(url.c_str())) {
         ESP_LOGE(TAG, "Failed to connect to websocket server");
-        if (on_network_error_ != nullptr) {
-            on_network_error_(Lang::Strings::SERVER_NOT_FOUND);
-        }
+        SetError(Lang::Strings::SERVER_NOT_FOUND);
         return false;
     }
 
@@ -119,9 +122,7 @@ bool WebsocketProtocol::OpenAudioChannel() {
     EventBits_t bits = xEventGroupWaitBits(event_group_handle_, WEBSOCKET_PROTOCOL_SERVER_HELLO_EVENT, pdTRUE, pdFALSE, pdMS_TO_TICKS(10000));
     if (!(bits & WEBSOCKET_PROTOCOL_SERVER_HELLO_EVENT)) {
         ESP_LOGE(TAG, "Failed to receive server hello");
-        if (on_network_error_ != nullptr) {
-            on_network_error_(Lang::Strings::SERVER_TIMEOUT);
-        }
+        SetError(Lang::Strings::SERVER_TIMEOUT);
         return false;
     }