mqttclient连接上server后，断开网络， mqttclient会尝试重连，每次重连就会出现内存泄漏 about mqttclient HOT 6 CLOSED

是存在这个问题。mqtt_yield_thread线程创建时，调用platform_memory_alloc分配了96B，mqtt_yield_thread退出时，只是设置了分离线程，线程ID资源可以释放，但是platform_thread_t资源并未释放。我建议这样修复：linux版本中，platform_thread_destroy接口，释放mqtt_yield_thread线程管理资源。
void platform_thread_destroy(platform_thread_t* thread)
{
if (NULL != thread)
{
pthread_detach(thread->thread);
platform_memory_free(thread); //add
}
}

from mqttclient.

这样修复后，我发现还是存在问题，我正在尝试能否关闭重试逻辑。

from mqttclient.

一旦断网 mqtt_keep_alive接口中，调用network_release接口释放连接，此时n->socket无效，
所以并未调用network_disconnect释放连接，这样使得nettype_tls_params堆空间没有释放，并且此处复位了network_t n，这样n->channel变为0，
所以即使组件调用者主动断开连接，也无法释放此处空间。 目前删除下列memset 可以解决断网产生的内存泄漏
void network_release(network_t* n)
{
DBG_PRINT("[enter]network_release,n->socket=%d\n",n->socket);

if (n->socket >= 0)
    network_disconnect(n);

//memset(n, 0, sizeof(network_t)); //wuhaodel   LEAK MEM

}

from mqttclient.

void platform_thread_destroy(platform_thread_t* thread)
{
if (NULL != thread)
{
pthread_detach(thread->thread);
platform_memory_free(thread); //add
}
}
void network_release(network_t* n)
{
DBG_PRINT("[enter]network_release,n->socket=%d\n",n->socket);

if (n->socket >= 0)
network_disconnect(n);

//memset(n, 0, sizeof(network_t)); //wuhaodel LEAK MEM
}

这样修正后，问题还是存在，请帮忙再check check @wuhaogs

from mqttclient.

我目前通过注释源码中的重试机制，外部通过销毁客户端重建的方式进行重试。 通过virgrind内存检测，没发生泄漏问题。
// 1.注释源码中的重试流程
static int mqtt_try_reconnect(mqtt_client_t* c):
rc = mqtt_try_do_reconnect(c); -> rc = MQTT_NOT_CONNECT_ERROR;

// 2.调用者实现销毁mqtt客户端接口
int32 mbed_exitMqttClient()
{
MQTT_CLIENT_HANDLE clientID = (MQTT_CLIENT_HANDLE)getMqttClientHandle();

if (!clientID)
{
    return ERROR;
}

DBG_PRINT("[enter]exit MqttClient,state=%u\n", clientID->mqtt_client_state);


// 释放由调用mqtt_set_will_options产生的堆空间
if (clientID->mqtt_will_options)
{
    DBG_PRINT("[mqtt exit]mqtt_set_will_options(%p) free OK\n",clientID->mqtt_will_options);
    platform_memory_free(clientID->mqtt_will_options);
}

if (1 == clientID->mqtt_client_state || 2 == clientID->mqtt_client_state)
{
    DBG_PRINT("[mqtt exit]mqtt_disconnect\n");
    if (SUCCESS == mqtt_disconnect(clientID))
    {
        DBG_PRINT("[mqtt exit]mqtt_disconnect OK\n");
    }
    
    while (-1 != clientID->mqtt_client_state)
    {
        adlBlockWait(2, MILLISECOND);
    }
}

DBG_PRINT("[mqtt exit]mqtt_release,state =%d\n",clientID->mqtt_client_state);

if (SUCCESS == mqtt_release(clientID))
{
    DBG_PRINT("[mqtt exit]mqtt_release OK\n");
}

DBG_PRINT("[mqtt exit]call mqtt free(%p) OK\n", clientID);

platform_memory_free(clientID);

clientID = NULL;

setMqttClientHandle(NULL);

DBG_PRINT("[mqtt exit]destroy MqttClient\n\n");

return ETOK;

}

from mqttclient.

另外关于platform_thread_destroy内存泄漏问题，最新仓库中代码已经修复。

from mqttclient.