updated webguiapp component, added example of mqtt send back message

components/webguiapp

@@ -1 +1 @@
-Subproject commit 724c7a437606d27fc41694de95da5523dd581ab5
+Subproject commit 267a7de82ac60a1d0a4e8caed0324e8c5600bfd9

main/MQTTCustom.c

@@ -24,6 +24,32 @@
 #include "webguiapp.h"
 #define TAG "MQTTCustom"
 
+esp_err_t UserMQTTSendExample(int idx)
+{
+    const char resp[] = { "Got MQTT data in topic USER" };
+    char *buf = (char*) malloc(strlen(resp) + 1);
+    if (buf)
+    {
+        memcpy(buf, resp, strlen(resp));
+        DATA_SEND_STRUCT DSS;
+        ComposeTopic(DSS.topic,
+                     GetSysConf()->mqttStation[idx].RootTopic,
+                     "UPLINK",
+                     GetSysConf()->mqttStation[idx].ClientID,
+                     "USER");
+        DSS.raw_data_ptr = buf;
+        DSS.data_length = strlen(resp);
+        if (xQueueSend(GetMQTTHandlesPool(idx)->mqtt_queue, &DSS, pdMS_TO_TICKS(1000)) == pdPASS)
+            return ESP_OK;
+        else
+        {
+            free(buf);
+            return ESP_ERR_TIMEOUT;
+        }
+
+    }
+    return ESP_ERR_NO_MEM;
+}
 
 void UserMQTTEventHndlr(void *handler_args, esp_event_base_t base, int32_t event_id, void *event_data)
 {
@@ -54,6 +80,7 @@ void UserMQTTEventHndlr(void *handler_args, esp_event_base_t base, int32_t event
             if (!memcmp(topic, event->topic, event->topic_len))
             {
                 //Here data for service called "USER"
+                UserMQTTSendExample(ctx->mqtt_index);
                 ESP_LOGI(TAG, "USER data handler on client %d", ctx->mqtt_index);
             }
         break;