优化了mqtt的问题，使用了异步检查重连机制,并且添加了重连10次将不会重连

app/main/pthread_open.c

@@ -116,12 +116,20 @@ void *thread_open_browser(void *arg) {
 void *thread_mqtt_reconnect(void *arg) {
  
     while(1){
-        if(mqtt_init() == 0){
-            my_zlog_warn("mqtt success");
+        static int reconnect_count=0;
+        static int remqtt_index;
+        remqtt_index=mqtt_init();
+        if(remqtt_index == 0){
+            my_zlog_warn("mqtt success",remqtt_index);
             break;
         }else {
-            my_zlog_warn("wait... mqtt reconect");
+            my_zlog_warn("wait... mqtt reconect,error:%d",remqtt_index);
             delay_ms(300);
+            reconnect_count++;
+            if(reconnect_count>MAX_RECONNECT_ATTEMPTS){
+                send_fail_mqtt_conect();
+                break;
+            }
             continue;
         }
     }

modules/mqtt/mqtt_init.c

@@ -10,25 +10,59 @@ mqttclient g_clients_t[MAX_SERVERS];
 char g_uuid_mqtt_topic_id[MAX_SERVERS][56];
 // struct mosquitto *mosq;
 
+// 新增：用于向其他MQTT服务器发送通知的函数
+void send_server_failure_notification(const char *failed_host, int failed_port, const char *failed_client_id);
+
 int add_mqtt_create(const char *host, int port, int clients_count);
 
 //mqtt初始化
 int mqtt_init() {
 
     mosquitto_lib_init();
-    // 这里创建mosq可以保留，也可以删除这一行，让创建放到 Mqtt_onnect 里
-    for(int i=0;i<g_mqtt_cam_config_t->mqtt_count;i++){
-      int erg= add_mqtt_create(g_mqtt_cam_config_t->mqtt_servers[i],BROKER_PORT,i);
-            if(erg !=0){
-                return -1;
+
+    int success_count = 0;
+    int failure_count = 0;
+
+    // 在尝试重新初始化之前，重置所有客户端状态。
+    // 如果 mqtt_init 被多次调用，这一点至关重要。
+    for (int i = 0; i < MAX_SERVERS; i++) {
+        if (g_clients_t[i].mosq) { // 如果已经存在，先销毁旧的
+            mosquitto_disconnect(g_clients_t[i].mosq);
+            mosquitto_destroy(g_clients_t[i].mosq);
         }
+        g_clients_t[i].mosq = NULL;
+        memset(g_clients_t[i].host, 0, sizeof(g_clients_t[i].host));
+        g_clients_t[i].port = 0;
+        // 清除 client_id 和 topic_id
+        memset(g_clients_t[i].client_id, 0, sizeof(g_clients_t[i].client_id));
+        memset(g_uuid_mqtt_topic_id[i], 0, sizeof(g_uuid_mqtt_topic_id[i]));
     }
 
-    if (!g_clients_t) {
-        my_zlog_error("Failed to create Mosquitto client");
-        return -1;
+    // 假设 g_mqtt_cam_config_t 已经有效
+    if (!g_mqtt_cam_config_t) {
+        my_zlog_fatal("mqtt_init: g_mqtt_cam_config_t is NULL. Cannot initialize.");
+        return -1; // 表示严重错误
     }
-    return 0;
+
+    for (int i = 0; i < g_mqtt_cam_config_t->mqtt_count; i++) {
+        // 正确地将索引 'i' 传递给 add_mqtt_create
+        int erg = add_mqtt_create(g_mqtt_cam_config_t->mqtt_servers[i], BROKER_PORT, i);
+        if (erg != 0) {
+            failure_count++;
+            my_zlog_error("未能为 %s:%d 添加 MQTT 客户端", g_mqtt_cam_config_t->mqtt_servers[i], BROKER_PORT);
+        } else {
+            success_count++;
+        }
+    }
+
+    // 返回失败的数量，或 0 表示完全成功
+    if (failure_count > 0) {
+        my_zlog_error("%d 个 MQTT 客户端初始化失败。", failure_count);
+        return failure_count; // 指示有多少失败
+    }
+
+    my_zlog_info("所有 %d 个 MQTT 客户端初始化成功。", success_count);
+    return 0; // 成功
 }
 
 //回调函数
@@ -36,6 +70,11 @@ void on_connect(struct mosquitto *mosq, void *obj, int rc) {
 
     mqttclient *client_t = (mqttclient*)obj;
 
+    if (!client_t) { // 安全检查
+        my_zlog_error("on_connect: client_t 为 NULL");
+        return;
+    }
+
     if (rc == 0) {
         my_zlog_info("Connected to broker");
         my_zlog_info("[Connected] %s:%d (%s)",
@@ -44,9 +83,29 @@ void on_connect(struct mosquitto *mosq, void *obj, int rc) {
         mosquitto_subscribe(mosq, NULL, mqtt_topic_app2dev_number(), 0);
         mosquitto_subscribe(mosq, NULL, mqtt_topic_ser2dev_number(), 0);
     } else {
-        fprintf(stderr, "Connection failed with code %d\n", rc);
-        my_zlog_fatal("[Connection Failed] %s:%d rc=%d",
-               client_t->host, client_t->port, rc);
+        client_t->reconnect_attempts++;
+        my_zlog_warn("客户端 %s:%d 连接失败。重试次数: %d/%d",
+               client_t->host, client_t->port, client_t->reconnect_attempts, MAX_RECONNECT_ATTEMPTS);
+
+        if (client_t->reconnect_attempts >= MAX_RECONNECT_ATTEMPTS) {
+            my_zlog_error("客户端 %s:%d 达到最大重试次数，不再尝试连接。标记为永久失败。",
+                   client_t->host, client_t->port);
+            client_t->permanently_failed = true;
+            // 停止 mosquitto 循环并销毁客户端
+            // 注意：在回调中直接销毁当前正在操作的 mosq 可能会导致问题，
+            // 更好的做法是设置一个标志，让外部循环（如果存在）或专门的清理线程来处理。
+            // 但因为 mosquitto_loop_start 是独立的线程，这里尝试停止并销毁它。
+            
+            // mosquitto_loop_stop 可能需要等待线程结束，这里是同步调用
+            mosquitto_loop_stop(mosq, false); // false 表示不强制，等待线程自行结束
+            mosquitto_disconnect(mosq);
+            mosquitto_destroy(mosq);
+            client_t->mosq = NULL; // 清除指针
+
+            // 向其他活跃的 MQTT 服务器发送通知
+            send_server_failure_notification(client_t->host, client_t->port, client_t->client_id);
+        }
+
     }
 }
 
@@ -56,6 +115,11 @@ void on_message(struct mosquitto *mosq, void *obj, const struct mosquitto_messag
 
      mqttclient *client_t = (mqttclient*)obj;
 
+    if (!client_t || !message || !message->topic) { // 安全检查
+        my_zlog_error("on_message: 无效参数 (client_t, message 或 topic 为 NULL)");
+        return;
+     }
+
      my_zlog_info("[Message from %s:%d] topic=%s payload=%s",
            client_t->host, client_t->port,
            message->topic, (char*)message->payload);
@@ -82,54 +146,87 @@ void on_message(struct mosquitto *mosq, void *obj, const struct mosquitto_messag
     }
 }
 
-int add_mqtt_create(const char *host, int port, int clients_count){
-    static int uuid_index =0;
+// 添加 MQTT 客户端并尝试连接
+// clients_idx 是 g_clients_t 和 g_uuid_mqtt_topic_id 数组的索引
+int add_mqtt_create(const char *host, int port, int clients_idx) {
+    // 移除了 'static int uuid_index = 0;'
+    // 不再需要独立的 uuid_index，直接使用传入的 clients_idx 作为索引
 
-    if(clients_count >= MAX_SERVERS) {
-        my_zlog_error("Max server limit reached.");
+    if (clients_idx >= MAX_SERVERS) {
+        my_zlog_error("达到最大服务器限制，索引 %d。", clients_idx);
         return -1;
     }
-    mqttclient *client_t = &g_clients_t[clients_count];
-    strncpy(client_t->host, host, sizeof(client_t->host)-1);
+
+    // 检查主机名是否为空或无效
+    if (!host || strlen(host) == 0) {
+        my_zlog_error("主机名为空，索引 %d。", clients_idx);
+        return -1;
+    }
+
+    mqttclient *client_t = &g_clients_t[clients_idx];
+    // 复制主机名，确保字符串末尾空终止
+    strncpy(client_t->host, host, sizeof(client_t->host) - 1);
+    client_t->host[sizeof(client_t->host) - 1] = '\0';
     client_t->port = port;
 
+    // 生成 UUID 作为客户端 ID
     uuid_t uuid;
-    uuid_generate_time(uuid); // 获取UUIDv1
+    uuid_generate_time(uuid); // 获取 UUIDv1
 
+    // 组合 UUID 的一部分作为短 ID，并存储在对应 clients_idx 的位置
+    // 这将作为 mosquitto 客户端的 ID
     unsigned short time_part = (uuid[0] << 8) | uuid[1];
     unsigned short mac_part  = (uuid[10] << 8) | uuid[11];
+    snprintf(g_uuid_mqtt_topic_id[clients_idx], sizeof(g_uuid_mqtt_topic_id[clients_idx]), "%04x%04x", time_part, mac_part);
+    g_uuid_mqtt_topic_id[clients_idx][sizeof(g_uuid_mqtt_topic_id[clients_idx])-1] = '\0'; // 确保空终止
 
-    // 组合成32位值（8字符十六进制）
-    snprintf(g_uuid_mqtt_topic_id[uuid_index], 9, "%04x%04x", time_part, mac_part);
+    // 将生成的 Client ID 也存储到 client_t 结构体中
+    strncpy(client_t->client_id, g_uuid_mqtt_topic_id[clients_idx], sizeof(client_t->client_id) -1);
+    client_t->client_id[sizeof(client_t->client_id) -1] = '\0'; // 确保空终止
 
-    client_t->mosq = mosquitto_new(g_uuid_mqtt_topic_id[uuid_index], true, client_t);
+    // 创建 mosquitto 客户端实例
+    client_t->mosq = mosquitto_new(g_uuid_mqtt_topic_id[clients_idx], true, client_t);
     
-    uuid_index++;
-
-    if(!client_t->mosq) {
-        my_zlog_error("mosquitto_new failed");
+    if (!client_t->mosq) {
+        my_zlog_error("mosquitto_new 失败，客户端索引 %d", clients_idx);
         return -1;
     }
 
+    // 设置 MQTT 协议版本
     mosquitto_int_option(client_t->mosq, MOSQ_OPT_PROTOCOL_VERSION, MQTT_PROTOCOL_V5);
 
+    // 设置重连延迟策略
     mosquitto_reconnect_delay_set(client_t->mosq, 2, 10, true);
+    // 设置回调函数
     mosquitto_connect_callback_set(client_t->mosq, on_connect);
     mosquitto_message_callback_set(client_t->mosq, on_message);
 
+    // 设置用户名和密码
     mosquitto_username_pw_set(client_t->mosq, USERNAME, PASSWORD);
    
+    // 尝试异步连接到 MQTT Broker
     int rc = mosquitto_connect_async(client_t->mosq, host, port, 60);
-    if( rc != MOSQ_ERR_SUCCESS) {
-        my_zlog_error("mosquitto_connect failed");
-        my_zlog_warn("Failed to connect to broker: %s", mosquitto_strerror(rc));
+    if (rc != MOSQ_ERR_SUCCESS) {
+        my_zlog_error("mosquitto_connect_async 失败，主机 %s:%d (rc=%d): %s", host, port, rc, mosquitto_strerror(rc));
+        mosquitto_destroy(client_t->mosq); // 如果连接失败，立即销毁 mosquitto 客户端实例
+        client_t->mosq = NULL; // 将指针置空，以防止在清理时操作无效指针
+        return -1;
+    }
 
+    // 启动 mosquitto 循环线程，处理网络 I/O 和回调
+    int loop_rc = mosquitto_loop_start(client_t->mosq);
+    if (loop_rc != MOSQ_ERR_SUCCESS) {
+        my_zlog_error("未能为客户端 %s 启动 mosquitto_loop_start: %s", client_t->client_id, mosquitto_strerror(loop_rc));
+        // 如果 loop_start 失败，也应断开连接并销毁
+        mosquitto_disconnect(client_t->mosq);
+        mosquitto_destroy(client_t->mosq);
+        client_t->mosq = NULL; // 确保指针置空
         return -1;
     }
   
-    my_zlog_info("add %s mqttserver success",host);
-    mosquitto_loop_start(client_t->mosq);
-    return 0;
+    my_zlog_info("成功为主机 %s 添加 MQTT 客户端", host);
+
+    return 0; // 成功
 }
 
 //mqtt清理
@@ -138,6 +235,7 @@ void mqtt_clean(){
     for(int i=0;i<g_mqtt_cam_config_t->mqtt_count;i++){
          mosquitto_disconnect(g_clients_t[i].mosq); 
         mosquitto_destroy(g_clients_t[i].mosq);
+        g_clients_t[i].mosq = NULL; // 将指针置空，防止悬挂指针
     }
     
     mosquitto_lib_cleanup();
@@ -148,19 +246,19 @@ int mqtt_cycle() {//非阻塞型
 
     
     while (1) {
-        bool all_connected = true;
+        // bool all_connected = true;
 
-        for (int i = 0; i < g_mqtt_cam_config_t->mqtt_count; i++) {
-            if (!g_clients_t[i].mosq) continue;
+        // for (int i = 0; i < g_mqtt_cam_config_t->mqtt_count; i++) {
+        //     if (!g_clients_t[i].mosq) continue;
 
-            int state = mosquitto_socket(g_clients_t[i].mosq);
-            if (state == -1) {
-                all_connected = false;  
-                my_zlog_warn("检测到 MQTT [%s:%d] 已断开，尝试重连...",
-                             g_clients_t[i].host, g_clients_t[i].port);
-                mosquitto_reconnect_async(g_clients_t[i].mosq);
-            }
-        }
+        //     int state = mosquitto_socket(g_clients_t[i].mosq);
+        //     if (state == -1) {
+        //         all_connected = false;  
+        //         my_zlog_warn("检测到 MQTT [%s:%d] 已断开，尝试重连...",
+        //                      g_clients_t[i].host, g_clients_t[i].port);
+        //         //mosquitto_reconnect_async(g_clients_t[i].mosq);
+        //     }
+        // }
 
         delay_ms(1000); // 每 1 秒检测一次连接状态
     }
@@ -179,3 +277,67 @@ int mqtt_cycle() {//非阻塞型
     return 0;
 }
 
+// 向其他活跃的 MQTT 服务器发送通知
+void send_server_failure_notification(const char *failed_host, int failed_port, const char *failed_client_id) {
+    my_zlog_info("准备发送服务器故障通知： %s:%d (%s)", failed_host, failed_port, failed_client_id);
+
+    cJSON *root = cJSON_CreateObject();
+    if (!root) {
+        my_zlog_error("创建 JSON 对象失败。");
+        return;
+    }
+    cJSON_AddStringToObject(root, "event_type", "server_failure");
+    cJSON_AddStringToObject(root, "failed_host", failed_host);
+    cJSON_AddNumberToObject(root, "failed_port", failed_port);
+    cJSON_AddStringToObject(root, "failed_client_id", failed_client_id);
+    cJSON_AddStringToObject(root, "message", "MQTT server permanently disconnected after multiple retries.");
+    cJSON_AddNumberToObject(root, "message_type", 9999);
+
+    char *json_string = cJSON_PrintUnformatted(root);
+    if (!json_string) {
+        my_zlog_error("将 JSON 打印到字符串失败。");
+        cJSON_Delete(root);
+        return;
+    }
+
+    for (int i = 0; i < MAX_SERVERS; i++) {
+        // 遍历所有客户端，如果客户端是活跃的且不是出问题的那个，就发送通知
+        if (g_clients_t[i].mosq && !g_clients_t[i].permanently_failed) {
+            // 确保不是给自己发送通知（通常同一个客户端不需要知道自己的失败）
+            // 尽管理论上失败的客户端的 mosq 已经为 NULL，这里仍然做个双重检查
+            if (strcmp(g_clients_t[i].host, failed_host) != 0 || g_clients_t[i].port != failed_port) {
+
+            for(int i=0;i<g_mqtt_cam_config_t->mqtt_count;i++){
+                mosquitto_publish(g_clients_t[i].mosq, NULL, mqtt_topic_dev2app_number(), strlen(json_string), json_string, 0, false); 
+                mosquitto_publish(g_clients_t[i].mosq, NULL, mqtt_topic_pure_number(), strlen(json_string), json_string, 0, false); 
+                }
+            }
+        }
+    }
+
+    free(json_string);
+    cJSON_Delete(root);
+}
+
+void send_fail_mqtt_conect(){
+    cJSON *root = cJSON_CreateObject();
+    if (!root) {
+        my_zlog_error("创建 JSON 对象失败。");
+        return;
+    }
+
+    cJSON_AddStringToObject(root, "event_type", "server_connect_failure");
+    cJSON_AddNumberToObject(root, "message_type", 9999);
+
+    char *json_string = cJSON_PrintUnformatted(root);
+    if (!json_string) {
+        my_zlog_error("将 JSON 打印到字符串失败。");
+        cJSON_Delete(root);
+        return;
+    }
+
+    for(int i=0;i<g_mqtt_cam_config_t->mqtt_count;i++){
+                mosquitto_publish(g_clients_t[i].mosq, NULL, mqtt_topic_dev2app_number(), strlen(json_string), json_string, 0, false); 
+                mosquitto_publish(g_clients_t[i].mosq, NULL, mqtt_topic_pure_number(), strlen(json_string), json_string, 0, false); 
+    }
+}
\ No newline at end of file

modules/mqtt/mqtt_init.h

@@ -8,11 +8,15 @@
 
 #define MAX_SERVERS 10
 
+#define MAX_RECONNECT_ATTEMPTS 10 
+
 typedef struct {
     struct mosquitto *mosq;
     char host[128];
     int port;
     char client_id[64];
+    int reconnect_attempts; // 新增：重连尝试次数
+    bool permanently_failed; // 新增：标记是否永久失败
 } mqttclient;
 
 extern mqttclient g_clients_t[MAX_SERVERS];
@@ -34,4 +38,7 @@ int mqtt_cycle();//循环
 
 //mqtt清理
 void mqtt_clean();
+
+//莫一个服务器连接失败发送
+void send_fail_mqtt_conect();
 #endif
\ No newline at end of file