Fix restore logic
[platform/core/uifw/stt.git] / client / stt_dbus.c
index f453a45..f6ddbf0 100644 (file)
@@ -1,5 +1,5 @@
 /*
-*  Copyright (c) 2011-2014 Samsung Electronics Co., Ltd All Rights Reserved 
+*  Copyright (c) 2011-2016 Samsung Electronics Co., Ltd All Rights Reserved
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 
 #include "stt_client.h"
 
+#include <vconf/vconf.h>
+#include <buxton2.h>
+
 static int g_waiting_time = 3000;
 static int g_waiting_short_time = 500;
 
+static char* g_server_service_name = NULL;
+static char* g_server_service_object = NULL;
+static char* g_server_service_interface = NULL;
+
 static Ecore_Fd_Handler* g_fd_handler = NULL;
 
-static DBusConnection* g_conn = NULL;
+static DBusConnection* g_conn_sender = NULL;
+static DBusConnection* g_conn_listener = NULL;
 
+void __stt_dbus_service_free();
 
-extern int __stt_cb_error(int uid, int reason);
+extern int __stt_cb_error(int uid, int reason, char* err_msg);
 
 extern int __stt_cb_result(int uid, int event, char** data, int data_count, const char* msg);
 
 extern int __stt_cb_set_state(int uid, int state);
 
-static Eina_Bool listener_event_callback(void* data, Ecore_Fd_Handler *fd_handler)
+extern int __stt_cb_set_volume(int uid, float volume);
+
+extern int __stt_cb_speech_status(int uid, int status);
+
+char* __stt_get_service_name(char* engine_id)
 {
-       DBusConnection* conn = (DBusConnection*)data;
-       DBusMessage* msg = NULL;
-       DBusMessage *reply = NULL;
+       char* service_name = NULL;
+       const char* engine_default = NULL;
+
+       struct buxton_client * bux_cli;
+       struct buxton_layer * bux_layer;
+       struct buxton_value * bux_val;
+
+       int ret = buxton_open(&bux_cli, NULL, NULL);
+       if (0 != ret) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] Fail to open buxton client, ret(%d)", ret);
+               return NULL;
+       }
+       SLOG(LOG_DEBUG, TAG_STTC, "[DBUS-BUXTON2] buxton_open: %d", ret);
+       bux_layer = buxton_create_layer("system");
+       if (NULL == bux_layer) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] buxton_create_layer FAIL");
+               buxton_close(bux_cli);
+               bux_cli = NULL;
+               return NULL;
+       }
+
+       bux_val = buxton_value_create_string("stt-engine-default");
+       if (NULL == bux_val) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] buxton_value_create_string FAIL");
+               buxton_free_layer(bux_layer);
+               buxton_close(bux_cli);
+               bux_layer = NULL;
+               bux_cli = NULL;
+               return NULL;
+       }
+
+       ret = buxton_get_value_sync(bux_cli, bux_layer, STT_ENGINE_DB_DEFAULT, &bux_val);
+       if (0 != ret) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] Fail to get value sync, ret(%d)", ret);
+               buxton_value_free(bux_val);
+               buxton_free_layer(bux_layer);
+               buxton_close(bux_cli);
+
+               bux_cli = NULL;
+               bux_layer = NULL;
+               bux_val = NULL;
+               return NULL;
+       }
+       ret = buxton_value_get_string(bux_val, &engine_default);
+       if (0 != ret) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] Fail to get value string, ret(%d)", ret);
+               buxton_value_free(bux_val);
+               buxton_free_layer(bux_layer);
+               buxton_close(bux_cli);
+
+               bux_cli = NULL;
+               bux_layer = NULL;
+               bux_val = NULL;
+               return NULL;
+       }
+       SLOG(LOG_DEBUG, TAG_STTC, "[DBUS-BUXTON2] buxton_value_get_string: engine_default: %s", engine_default);
+
+
+       if (NULL == engine_id || NULL == engine_default || 0 == strncmp(engine_id, engine_default, strlen(engine_id))) {
+               service_name = (char*)calloc(strlen(STT_SERVER_SERVICE_NAME) + 1, sizeof(char));
+               if (NULL == service_name) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Memory allocation Failed!!");
+                       buxton_value_free(bux_val);
+                       buxton_free_layer(bux_layer);
+                       buxton_close(bux_cli);
+
+                       bux_cli = NULL;
+                       bux_layer = NULL;
+                       bux_val = NULL;
+                       return NULL;
+               }
+               snprintf(service_name, strlen(STT_SERVER_SERVICE_NAME) + 1, "%s", STT_SERVER_SERVICE_NAME);
+       } else {
+               service_name = (char*)calloc(strlen(STT_SERVER_SERVICE_NAME) + strlen(engine_id) - 8, sizeof(char));
+               if (NULL == service_name) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Memory allocation Failed!!");
+                       buxton_value_free(bux_val);
+                       buxton_free_layer(bux_layer);
+                       buxton_close(bux_cli);
+
+                       bux_cli = NULL;
+                       bux_layer = NULL;
+                       bux_val = NULL;
+                       return NULL;
+               }
+               snprintf(service_name, strlen(STT_SERVER_SERVICE_NAME) + strlen(engine_id) - 8, "%s%s%s", STT_SERVER_SERVICE_NAME, ".", (engine_id + 10));
+       }
 
-       if (NULL == conn)
-               return ECORE_CALLBACK_RENEW;
+       buxton_value_free(bux_val);
+       buxton_free_layer(bux_layer);
+       buxton_close(bux_cli);
 
-       dbus_connection_read_write_dispatch(conn, 50);
+       bux_cli = NULL;
+       bux_layer = NULL;
+       bux_val = NULL;
 
-       msg = dbus_connection_pop_message(conn);
+       SLOG(LOG_DEBUG, TAG_STTC, "[get_service_name] FINISH!! service name: %s", service_name);
 
-       if (true != dbus_connection_get_is_connected(conn)) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Conn is disconnected");
-               return ECORE_CALLBACK_RENEW;
-       }
+       return service_name;
+}
 
-       /* loop again if we haven't read a message */
-       if (NULL == msg) { 
-               return ECORE_CALLBACK_RENEW;
+char* __stt_get_service_object(char* engine_id)
+{
+       char* service_object = NULL;
+       const char* engine_default = NULL;
+
+       struct buxton_client * bux_cli;
+       struct buxton_layer * bux_layer;
+       struct buxton_value * bux_val;
+
+       int ret = buxton_open(&bux_cli, NULL, NULL);
+       if (0 != ret) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] Fail to open buxton client, ret(%d)", ret);
+               return NULL;
+       }
+       bux_layer = buxton_create_layer("system");
+       if (NULL == bux_layer) {
+               SLOG(LOG_DEBUG, TAG_STTC, "[DBUS-BUXTON2] buxton_create_layer FAIL");
+               buxton_close(bux_cli);
+               bux_cli = NULL;
+               return NULL;
+       }
+
+       bux_val = buxton_value_create_string("stt-engine-default");
+       if (NULL == bux_val) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] buxton_value_create_string FAIL");
+               buxton_free_layer(bux_layer);
+               buxton_close(bux_cli);
+               bux_layer = NULL;
+               bux_cli = NULL;
+               return NULL;
+       }
+
+       ret = buxton_get_value_sync(bux_cli, bux_layer, STT_ENGINE_DB_DEFAULT, &bux_val);
+       if (0 != ret) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] Fail to get value sync, ret(%d)", ret);
+               buxton_value_free(bux_val);
+               buxton_free_layer(bux_layer);
+               buxton_close(bux_cli);
+
+               bux_cli = NULL;
+               bux_layer = NULL;
+               bux_val = NULL;
+               return NULL;
+       }
+       ret = buxton_value_get_string(bux_val, &engine_default);
+       if (0 != ret) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] Fail to get string, ret(%d)", ret);
+               buxton_value_free(bux_val);
+               buxton_free_layer(bux_layer);
+               buxton_close(bux_cli);
+
+               bux_cli = NULL;
+               bux_layer = NULL;
+               bux_val = NULL;
+               return NULL;
+       }
+       SLOG(LOG_DEBUG, TAG_STTC, "[DBUS-BUXTON2] buxton_value_get_string: engine_default: %s", engine_default);
+
+       if (NULL == engine_id || NULL == engine_default || 0 == strncmp(engine_id, engine_default, strlen(engine_id))) {
+               service_object = (char*)calloc(strlen(STT_SERVER_SERVICE_OBJECT_PATH) + 1, sizeof(char));
+               if (NULL == service_object) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Memory allocation Failed!!");
+                       buxton_value_free(bux_val);
+                       buxton_free_layer(bux_layer);
+                       buxton_close(bux_cli);
+
+                       bux_cli = NULL;
+                       bux_layer = NULL;
+                       bux_val = NULL;
+                       return NULL;
+               }
+               snprintf(service_object, strlen(STT_SERVER_SERVICE_OBJECT_PATH) + 1, "%s", STT_SERVER_SERVICE_OBJECT_PATH);
+       } else {
+               service_object = (char*)calloc(strlen(STT_SERVER_SERVICE_OBJECT_PATH) + strlen(engine_id) - 8, sizeof(char));
+               if (NULL == service_object) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Memory allocation Failed!!");
+                       buxton_value_free(bux_val);
+                       buxton_free_layer(bux_layer);
+                       buxton_close(bux_cli);
+
+                       bux_cli = NULL;
+                       bux_layer = NULL;
+                       bux_val = NULL;
+                       return NULL;
+               }
+               snprintf(service_object, strlen(STT_SERVER_SERVICE_OBJECT_PATH) + strlen(engine_id) - 8, "%s%s%s", STT_SERVER_SERVICE_OBJECT_PATH, "/", (engine_id + 10));
        }
 
-       DBusError err;
-       dbus_error_init(&err);
+       buxton_value_free(bux_val);
+       buxton_free_layer(bux_layer);
+       buxton_close(bux_cli);
 
-       char if_name[64];
-       snprintf(if_name, 64, "%s%d", STT_CLIENT_SERVICE_INTERFACE, getpid());
+       bux_cli = NULL;
+       bux_layer = NULL;
+       bux_val = NULL;
 
-       if (dbus_message_is_method_call(msg, if_name, STTD_METHOD_HELLO)) {
-               SLOG(LOG_DEBUG, TAG_STTC, "===== Get Hello");
-               int uid = 0;
-               int response = -1;
+       SLOG(LOG_DEBUG, TAG_STTC, "[get_service_object] FINISH!! service object: %s", service_object);
 
-               dbus_message_get_args(msg, &err, DBUS_TYPE_INT32, &uid, DBUS_TYPE_INVALID);
-               if (dbus_error_is_set(&err)) {
-                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
-                       dbus_error_free(&err);
-               }
+       return service_object;
+}
 
-               if (uid > 0) {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt get hello : uid(%d)", uid);
-                       
-                       /* check uid */
-                       stt_client_s* client = stt_client_get_by_uid(uid);
-                       if( NULL != client ) 
-                               response = 1;
-                       else 
-                               response = 0;
-               } else {
-                       SLOG(LOG_ERROR, TAG_STTC, "<<<< stt get hello : invalid uid");
+char* __stt_get_service_interface(char* engine_id)
+{
+       char* service_interface = NULL;
+       const char* engine_default = NULL;
+
+       struct buxton_client * bux_cli;
+       struct buxton_layer * bux_layer;
+       struct buxton_value * bux_val;
+
+       int ret = buxton_open(&bux_cli, NULL, NULL);
+       if (0 != ret) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] Fail to open buxton client, ret(%d)", ret);
+               return NULL;
+       }
+       bux_layer = buxton_create_layer("system");
+       if (NULL == bux_layer) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] buxton_create_layer FAIL");
+               buxton_close(bux_cli);
+               bux_cli = NULL;
+               return NULL;
+       }
+
+       bux_val = buxton_value_create_string("stt-engine-default");
+       if (NULL == bux_val) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] buxton_value_create_string FAIL");
+               buxton_free_layer(bux_layer);
+               buxton_close(bux_cli);
+               bux_layer = NULL;
+               bux_cli = NULL;
+               return NULL;
+       }
+
+       ret = buxton_get_value_sync(bux_cli, bux_layer, STT_ENGINE_DB_DEFAULT, &bux_val);
+       if (0 != ret) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] Fail to get value sync, ret(%d)", ret);
+               buxton_value_free(bux_val);
+               buxton_free_layer(bux_layer);
+               buxton_close(bux_cli);
+
+               bux_cli = NULL;
+               bux_layer = NULL;
+               bux_val = NULL;
+               return NULL;
+       }
+       ret = buxton_value_get_string(bux_val, &engine_default);
+       if (0 != ret) {
+               SLOG(LOG_ERROR, TAG_STTC, "[DBUS-BUXTON2] Fail to get string, ret(%d)", ret);
+               buxton_value_free(bux_val);
+               buxton_free_layer(bux_layer);
+               buxton_close(bux_cli);
+
+               bux_cli = NULL;
+               bux_layer = NULL;
+               bux_val = NULL;
+               return NULL;
+       }
+       SLOG(LOG_DEBUG, TAG_STTC, "[DBUS-BUXTON2] buxton_value_get_string: engine_default: %s", engine_default);
+
+       if (NULL == engine_id || NULL == engine_default || 0 == strncmp(engine_id, engine_default, strlen(engine_id))) {
+               service_interface = (char*)calloc(strlen(STT_SERVER_SERVICE_INTERFACE) + 1, sizeof(char));
+               if (NULL == service_interface) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Memory allocation Failed!!");
+                       buxton_value_free(bux_val);
+                       buxton_free_layer(bux_layer);
+                       buxton_close(bux_cli);
+
+                       bux_cli = NULL;
+                       bux_layer = NULL;
+                       bux_val = NULL;
+                       return NULL;
+               }
+               snprintf(service_interface, strlen(STT_SERVER_SERVICE_INTERFACE) + 1, "%s", STT_SERVER_SERVICE_INTERFACE);
+       } else {
+               service_interface = (char*)calloc(strlen(STT_SERVER_SERVICE_INTERFACE) + strlen(engine_id) - 8, sizeof(char));
+               if (NULL == service_interface) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Memory allocation Failed!!");
+                       buxton_value_free(bux_val);
+                       buxton_free_layer(bux_layer);
+                       buxton_close(bux_cli);
+
+                       bux_cli = NULL;
+                       bux_layer = NULL;
+                       bux_val = NULL;
+                       return NULL;
                }
+               snprintf(service_interface, strlen(STT_SERVER_SERVICE_INTERFACE) + strlen(engine_id) - 8, "%s%s%s", STT_SERVER_SERVICE_INTERFACE, ".", (engine_id + 10));
+       }
 
-               reply = dbus_message_new_method_return(msg);
-               
-               if (NULL != reply) {
-                       dbus_message_append_args(reply, DBUS_TYPE_INT32, &response, DBUS_TYPE_INVALID);
+       char* ret_char = strchr(service_interface, '-');
+       while (NULL != ret_char) {
+               ret_char[0] = '_';
+               ret_char = strchr(service_interface, '-');
+       }
 
-                       if (!dbus_connection_send(conn, reply, NULL))
-                               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get hello : fail to send reply");
-                       else 
-                               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt get hello : result(%d)", response);
+       buxton_value_free(bux_val);
+       buxton_free_layer(bux_layer);
+       ret = buxton_close(bux_cli);
 
-                       dbus_connection_flush(conn);
-                       dbus_message_unref(reply); 
-               } else {
-                       SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get hello : fail to create reply message");
+       bux_cli = NULL;
+       bux_layer = NULL;
+       bux_val = NULL;
+
+       SLOG(LOG_DEBUG, TAG_STTC, "[get_service_interface] FINISH!! service interface: %s", service_interface);
+
+       return service_interface;
+}
+
+
+static Eina_Bool listener_event_callback(void* data, Ecore_Fd_Handler *fd_handler)
+{
+       if (NULL == g_conn_listener)    return ECORE_CALLBACK_RENEW;
+
+       dbus_connection_read_write_dispatch(g_conn_listener, 50);
+
+       while (1) {
+               DBusMessage* msg = NULL;
+               msg = dbus_connection_pop_message(g_conn_listener);
+
+               if (true != dbus_connection_get_is_connected(g_conn_listener)) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is disconnected");
+                       break;
                }
-               
-               SLOG(LOG_DEBUG, TAG_STTC, "=====");
-               SLOG(LOG_DEBUG, TAG_STTC, " ");
-       } /* STTD_METHOD_HELLO */
-
-       else if (dbus_message_is_method_call(msg, if_name, STTD_METHOD_SET_STATE)) {
-               SLOG(LOG_DEBUG, TAG_STTC, "===== Set State");
-               int uid = 0;
-               int response = -1;
-               int state = -1;
-
-               dbus_message_get_args(msg, &err, 
-                       DBUS_TYPE_INT32, &uid, 
-                       DBUS_TYPE_INT32, &state,
-                       DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) {
-                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
-                       dbus_error_free(&err);
+               /* loop again if we haven't read a message */
+               if (NULL == msg) {
+                       break;
                }
 
-               if (uid > 0 && state >= 0) {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set state : uid(%d), state(%d)", uid, state);
+               SLOG(LOG_DEBUG, TAG_STTC, "[DEBUG] Message is arrived");
 
-                       response = __stt_cb_set_state(uid, state);
-               } else {
-                       SLOG(LOG_ERROR, TAG_STTC, "<<<< stt set state : invalid uid or state");
-               }
+               DBusError err;
+               dbus_error_init(&err);
 
-               reply = dbus_message_new_method_return(msg);
+               DBusMessage *reply = NULL;
 
-               if (NULL != reply) {
-                       dbus_message_append_args(reply, DBUS_TYPE_INT32, &response, DBUS_TYPE_INVALID);
+               char if_name[64];
+               snprintf(if_name, 64, "%s%d", STT_CLIENT_SERVICE_INTERFACE, getpid());
 
-                       if (!dbus_connection_send(conn, reply, NULL)) {
-                               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt set state : fail to send reply");
-                       }
+               if (dbus_message_is_method_call(msg, if_name, STTD_METHOD_HELLO)) {
+                       SLOG(LOG_DEBUG, TAG_STTC, "===== Get Hello");
+                       int uid = 0;
+                       int response = -1;
 
-                       dbus_connection_flush(conn);
-                       dbus_message_unref(reply); 
-               } else {
-                       SLOG(LOG_ERROR, TAG_STTC, ">>>> stt set state : fail to create reply message");
-               }
+                       dbus_message_get_args(msg, &err, DBUS_TYPE_INT32, &uid, DBUS_TYPE_INVALID);
+                       if (dbus_error_is_set(&err)) {
+                               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
+                               dbus_error_free(&err);
+                       }
 
-               SLOG(LOG_DEBUG, TAG_STTC, "=====");
-               SLOG(LOG_DEBUG, TAG_STTC, " ");
-       } /* STTD_METHOD_SET_STATE */
+                       if (uid > 0) {
+                               SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt get hello : uid(%d)", uid);
 
-       else if (dbus_message_is_method_call(msg, if_name, STTD_METHOD_GET_STATE)) {
-               SLOG(LOG_DEBUG, TAG_STTC, "===== Get state");
-               int uid = 0;
-               int response = -1;
+                               /* check uid */
+                               stt_client_s* client = stt_client_get_by_uid(uid);
+                               if (NULL != client)
+                                       response = 1;
+                               else
+                                       response = 0;
+                       } else {
+                               SLOG(LOG_ERROR, TAG_STTC, "<<<< stt get hello : invalid uid");
+                       }
 
-               dbus_message_get_args(msg, &err, DBUS_TYPE_INT32, &uid, DBUS_TYPE_INVALID);
+                       reply = dbus_message_new_method_return(msg);
 
-               if (dbus_error_is_set(&err)) {
-                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
-                       dbus_error_free(&err);
-               }
+                       if (NULL != reply) {
+                               dbus_message_append_args(reply, DBUS_TYPE_INT32, &response, DBUS_TYPE_INVALID);
 
-               if (uid > 0) {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt get state : uid(%d)", uid);
+                               if (!dbus_connection_send(g_conn_listener, reply, NULL))
+                                       SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get hello : fail to send reply");
+                               else
+                                       SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt get hello : result(%d)", response);
 
-                       /* check state */
-                       stt_client_s* client = stt_client_get_by_uid(uid);
-                       if( NULL != client ) 
-                               response = client->current_state;
-                       else 
-                               SLOG(LOG_ERROR, TAG_STTC, "invalid uid");
-                       
-               } else {
-                       SLOG(LOG_ERROR, TAG_STTC, "<<<< stt get state : invalid uid");
-               }
+                               dbus_connection_flush(g_conn_listener);
+                               dbus_message_unref(reply);
+                       } else {
+                               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get hello : fail to create reply message");
+                       }
 
-               reply = dbus_message_new_method_return(msg);
+                       SLOG(LOG_DEBUG, TAG_STTC, "=====");
+                       SLOG(LOG_DEBUG, TAG_STTC, " ");
+               } /* STTD_METHOD_HELLO */
 
-               if (NULL != reply) {
-                       dbus_message_append_args(reply, DBUS_TYPE_INT32, &response, DBUS_TYPE_INVALID);
+               else if (dbus_message_is_signal(msg, if_name, STTD_METHOD_SET_STATE)) {
+                       SLOG(LOG_DEBUG, TAG_STTC, "===== Set State");
+                       int uid = 0;
+                       int state = -1;
 
-                       if (!dbus_connection_send(conn, reply, NULL))
-                               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get state : fail to send reply");
-                       else 
-                               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt get state : result(%d)", response);
+                       dbus_message_get_args(msg, &err,
+                               DBUS_TYPE_INT32, &uid,
+                               DBUS_TYPE_INT32, &state,
+                               DBUS_TYPE_INVALID);
 
-                       dbus_connection_flush(conn);
-                       dbus_message_unref(reply); 
-               } else {
-                       SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get hello : fail to create reply message");
-               }
+                       if (dbus_error_is_set(&err)) {
+                               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
+                               dbus_error_free(&err);
+                       }
 
-               SLOG(LOG_DEBUG, TAG_STTC, "=====");
-               SLOG(LOG_DEBUG, TAG_STTC, " ");
-       } /* STTD_METHOD_GET_STATE */
-
-       else if (dbus_message_is_method_call(msg, if_name, STTD_METHOD_RESULT)) {
-               SLOG(LOG_DEBUG, TAG_STTC, "===== Get Result");
-               int uid = 0;
-               DBusMessageIter args;
-                       
-               dbus_message_iter_init(msg, &args);
-               
-               /* Get result */
-               if (DBUS_TYPE_INT32 == dbus_message_iter_get_arg_type(&args)) {
-                       dbus_message_iter_get_basic(&args, &uid);
-                       dbus_message_iter_next(&args);
-               }
-               
-               if (uid > 0) {
-                       char** temp_result = NULL;
-                       char* temp_msg = NULL;
-                       char* temp_char = NULL;
-                       int temp_event = 0;
-                       int temp_count = 0;
-
-                       /* Get recognition type */
-                       if (DBUS_TYPE_INT32 == dbus_message_iter_get_arg_type(&args)) {
-                               dbus_message_iter_get_basic(&args, &temp_event);
-                               dbus_message_iter_next(&args);
+                       if (uid > 0 && state >= 0) {
+                               SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set state : uid(%d), state(%d)", uid, state);
+                               __stt_cb_set_state(uid, state);
+                       } else {
+                               SLOG(LOG_ERROR, TAG_STTC, "<<<< stt set state : invalid uid or state");
                        }
 
-                       if (DBUS_TYPE_STRING == dbus_message_iter_get_arg_type(&args)) {
-                               dbus_message_iter_get_basic(&args, &(temp_msg) );
-                               dbus_message_iter_next(&args);
+                       SLOG(LOG_DEBUG, TAG_STTC, "=====");
+                       SLOG(LOG_DEBUG, TAG_STTC, " ");
+               } /* STTD_METHOD_SET_STATE */
+
+               else if (dbus_message_is_signal(msg, if_name, STTD_METHOD_SET_VOLUME)) {
+                       SLOG(LOG_DEBUG, TAG_STTC, "===== Set volume : signal");
+                       int uid = 0;
+                       float volume = 0;
+
+                       dbus_message_get_args(msg, &err,
+                               DBUS_TYPE_INT32, &uid,
+                               DBUS_TYPE_INT32, &volume,
+                               DBUS_TYPE_INVALID);
+
+                       if (dbus_error_is_set(&err)) {
+                               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
+                               dbus_error_free(&err);
                        }
 
-                       /* Get voice size */
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set volume : uid(%d), volume(%f)", uid, volume);
+                       __stt_cb_set_volume(uid, volume);
+
+                       /* SLOG(LOG_DEBUG, TAG_STTC, "====="); */
+                       /* SLOG(LOG_DEBUG, TAG_STTC, " "); */
+               } /* STTD_METHOD_SET_VOLUME */
+
+               else if (dbus_message_is_signal(msg, if_name, STTD_METHOD_RESULT)) {
+                       SLOG(LOG_DEBUG, TAG_STTC, "===== Get Result : signal");
+                       int uid = 0;
+                       DBusMessageIter args;
+
+                       dbus_message_iter_init(msg, &args);
+
+                       /* Get result */
                        if (DBUS_TYPE_INT32 == dbus_message_iter_get_arg_type(&args)) {
-                               dbus_message_iter_get_basic(&args, &temp_count);
+                               dbus_message_iter_get_basic(&args, &uid);
                                dbus_message_iter_next(&args);
                        }
 
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt get result : uid(%d) event(%d) message(%s) count(%d)", 
-                               uid, temp_event, temp_msg, temp_count);
+                       stt_client_s* client = NULL;
+                       client = stt_client_get_by_uid(uid);
+                       if (NULL != client) {
+                               char** temp_result = NULL;
+                               char* temp_msg = NULL;
+                               char* temp_char = NULL;
+                               int temp_event = 0;
+                               int temp_count = 0;
+                               int temp_result_id = 0;
+
+                               /* Get recognition type */
+                               if (DBUS_TYPE_INT32 == dbus_message_iter_get_arg_type(&args)) {
+                                       dbus_message_iter_get_basic(&args, &temp_event);
+                                       dbus_message_iter_next(&args);
+                               }
 
-                       if (temp_count <= 0) {
-                               __stt_cb_result(uid, temp_event, NULL, 0, temp_msg);
-                       } else {
-                               temp_result = (char**)calloc(temp_count, sizeof(char*));
+                               if (DBUS_TYPE_STRING == dbus_message_iter_get_arg_type(&args)) {
+                                       dbus_message_iter_get_basic(&args, &(temp_msg));
+                                       dbus_message_iter_next(&args);
+                               }
+
+                               /* Get voice size */
+                               if (DBUS_TYPE_INT32 == dbus_message_iter_get_arg_type(&args)) {
+                                       dbus_message_iter_get_basic(&args, &temp_count);
+                                       dbus_message_iter_next(&args);
+                               }
+
+                               /* Get result id */
+                               if (DBUS_TYPE_INT32 == dbus_message_iter_get_arg_type(&args)) {
+                                       dbus_message_iter_get_basic(&args, &temp_result_id);
+                                       dbus_message_iter_next(&args);
+                               }
 
-                               if (NULL == temp_result)        {
-                                       SLOG(LOG_ERROR, TAG_STTC, "Fail : memory allocation error");
+                               SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt get result : uid(%d) event(%d) message(%s) count(%d) result id(%d)",
+                                       uid, temp_event, temp_msg, temp_count, temp_result_id);
+
+                               if (temp_count <= 0) {
+                                       __stt_cb_result(uid, temp_event, NULL, 0, temp_msg);
                                } else {
-                                       int i = 0;
-                                       for (i = 0;i < temp_count;i++) {
-                                               dbus_message_iter_get_basic(&args, &(temp_char) );
-                                               dbus_message_iter_next(&args);
+                                       temp_result = (char**)calloc(temp_count, sizeof(char*));
+
+                                       if (NULL == temp_result)        {
+                                               SLOG(LOG_ERROR, TAG_STTC, "Fail : memory allocation error");
+                                       } else {
+                                               int i = 0;
+                                               for (i = 0; i < temp_count; i++) {
+                                                       dbus_message_iter_get_basic(&args, &(temp_char));
+                                                       dbus_message_iter_next(&args);
+
+                                                       if (NULL != temp_char) {
+                                                               temp_result[i] = strdup(temp_char);
+                                                               SLOG(LOG_DEBUG, TAG_STTC, "result[%d] : %s", i, temp_result[i]);
+                                                       }
+                                               }
 
-                                               if (NULL != temp_char) {
-                                                       temp_result[i] = strdup(temp_char);
-                                                       SLOG(LOG_DEBUG, TAG_STTC, "result[%d] : %s", i, temp_result[i]);
+                                               __stt_cb_result(uid, temp_event, temp_result, temp_count, temp_msg);
+
+                                               for (i = 0; i < temp_count; i++) {
+                                                       if (NULL != temp_result[i])
+                                                               free(temp_result[i]);
                                                }
+
+                                               free(temp_result);
                                        }
+                               }
+                       } else {
+                               SLOG(LOG_ERROR, TAG_STTC, "<<<< stt get result : invalid uid");
+                       }
 
-                                       __stt_cb_result(uid, temp_event, temp_result, temp_count, temp_msg);
+                       SLOG(LOG_DEBUG, TAG_STTC, "=====");
+                       SLOG(LOG_DEBUG, TAG_STTC, " ");
+               } /* STTD_METHOD_RESULT */
 
-                                       for (i = 0;i < temp_count;i++) {
-                                               if (NULL != temp_result[i])
-                                                       free(temp_result[i]);
-                                       }
+               else if (dbus_message_is_signal(msg, if_name, STTD_METHOD_ERROR)) {
+                       SLOG(LOG_DEBUG, TAG_STTC, "===== Get Error");
+                       int uid;
+                       int reason;
+                       char* err_msg;
 
-                                       free(temp_result);
-                               }
+                       dbus_message_get_args(msg, &err,
+                               DBUS_TYPE_INT32, &uid,
+                               DBUS_TYPE_INT32, &reason,
+                               DBUS_TYPE_STRING, &err_msg,
+                               DBUS_TYPE_INVALID);
+
+                       if (dbus_error_is_set(&err)) {
+                               SLOG(LOG_ERROR, TAG_STTC, "<<<< stt Get Error message : Get arguments error (%s)", err.message);
+                               dbus_error_free(&err);
+                       } else {
+                               SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt Get Error message : uid(%d), reason(%d), err_msg(%s)", uid, reason, (NULL == err_msg) ? "NULL" : err_msg);
+                               __stt_cb_error(uid, reason, err_msg);
                        }
-               } else {
-                       SLOG(LOG_ERROR, TAG_STTC, "<<<< stt get result : invalid uid");
-               }
 
-               SLOG(LOG_DEBUG, TAG_STTC, "=====");
-               SLOG(LOG_DEBUG, TAG_STTC, " ");
-       }/* STTD_METHOD_RESULT */
+                       SLOG(LOG_DEBUG, TAG_STTC, "=====");
+                       SLOG(LOG_DEBUG, TAG_STTC, " ");
+               } /* STTD_METHOD_ERROR */
 
-       else if (dbus_message_is_method_call(msg, if_name, STTD_METHOD_ERROR)) {
-               SLOG(LOG_DEBUG, TAG_STTC, "===== Get Error");
-               int uid;
-               int reason;
-               char* err_msg;
+               else if (dbus_message_is_signal(msg, if_name, STTD_METHOD_SPEECH_STATUS)) {
+                       SLOG(LOG_DEBUG, TAG_STTC, "===== Speech status");
+                       int uid = 0;
+                       int status = -1;
 
-               dbus_message_get_args(msg, &err,
-                       DBUS_TYPE_INT32, &uid,
-                       DBUS_TYPE_INT32, &reason,
-                       DBUS_TYPE_STRING, &err_msg,
-                       DBUS_TYPE_INVALID);
+                       dbus_message_get_args(msg, &err,
+                               DBUS_TYPE_INT32, &uid,
+                               DBUS_TYPE_INT32, &status,
+                               DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
-                       SLOG(LOG_ERROR, TAG_STTC, "<<<< stt Get Error message : Get arguments error (%s)\n", err.message);
-                       dbus_error_free(&err); 
-               } else {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt Get Error message : uid(%d), reason(%d), msg(%s)\n", uid, reason, err_msg);
-                       __stt_cb_error(uid, reason);
-               }
+                       if (dbus_error_is_set(&err)) {
+                               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
+                               dbus_error_free(&err);
+                       }
 
-               reply = dbus_message_new_method_return(msg);
+                       if (uid > 0 && status >= 0) {
+                               SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt speech status : uid(%d), status(%d)", uid, status);
+                               __stt_cb_speech_status(uid, status);
+                       } else {
+                               SLOG(LOG_ERROR, TAG_STTC, "<<<< stt set status : invalid uid or status");
+                       }
 
-               if (NULL != reply) {
-                       if (!dbus_connection_send(conn, reply, NULL))
-                               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt Error message : fail to send reply");
-                       else 
-                               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt Error message");
+                       SLOG(LOG_DEBUG, TAG_STTC, "=====");
+                       SLOG(LOG_DEBUG, TAG_STTC, " ");
+               } /* STTD_METHOD_SPEECH_STATUS */
+
+               else if (dbus_message_is_signal(msg, "org.freedesktop.DBus", "NameOwnerChanged")) {
+                       SLOG(LOG_DEBUG, TAG_STTC, "===== Owner Changed");
+                       DBusError err;
+                       dbus_error_init(&err);
+
+                       /* remove a rule for daemon error */
+                       char rule_err[256] = {0, };
+                       snprintf(rule_err, 256, "sender='org.freedesktop.DBus',path='/org/freedesktop/DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',type='signal',arg0='%s'", g_server_service_interface);
+                       dbus_bus_remove_match(g_conn_listener, rule_err, &err);
+                       dbus_connection_flush(g_conn_listener);
+                       if (dbus_error_is_set(&err)) {
+                               SLOG(LOG_ERROR, TAG_STTC, "Match Error (%s)", err.message);
+                               dbus_error_free(&err);
+                       }
 
-                       dbus_connection_flush(conn);
-                       dbus_message_unref(reply); 
-               } else {
-                       SLOG(LOG_ERROR, TAG_STTC, ">>>> stt Error message : fail to create reply message");
-               }
+                       __stt_cb_error(-1, STT_ERROR_SERVICE_RESET, "Daemon Reset");
+                       SLOG(LOG_DEBUG, TAG_STTC, "=====");
+                       SLOG(LOG_DEBUG, TAG_STTC, " ");
+               } /* NameOwnerChanged */
 
-               SLOG(LOG_DEBUG, TAG_STTC, "=====");
-               SLOG(LOG_DEBUG, TAG_STTC, " ");
-       }/* STTD_METHOD_ERROR */
+               else {
+                       SLOG(LOG_DEBUG, TAG_STTC, "Message is NOT valid");
+                       dbus_message_unref(msg);
+                       break;
+               }
 
-       /* free the message */
-       dbus_message_unref(msg);
+               /* free the message */
+               dbus_message_unref(msg);
+       } /* while */
 
-       return ECORE_CALLBACK_PASS_ON;
+       return ECORE_CALLBACK_RENEW;
 }
 
 int stt_dbus_open_connection()
 {
-       if (NULL != g_conn) {
+       if (NULL != g_conn_sender && NULL != g_conn_listener) {
                SLOG(LOG_WARN, TAG_STTC, "already existed connection ");
                return 0;
        }
 
        DBusError err;
-       int ret;
 
        /* initialise the error value */
        dbus_error_init(&err);
 
        /* connect to the DBUS system bus, and check for errors */
-       g_conn = dbus_bus_get_private(DBUS_BUS_SYSTEM, &err);
+       if (NULL == g_conn_sender) {
+               g_conn_sender = dbus_bus_get_private(DBUS_BUS_SESSION, &err);
+               if (dbus_error_is_set(&err)) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Dbus Connection Error (%s)", err.message);
+                       dbus_error_free(&err);
+               }
+       }
 
-       if (dbus_error_is_set(&err)) { 
-               SLOG(LOG_ERROR, TAG_STTC, "Dbus Connection Error (%s)\n", err.message); 
-               dbus_error_free(&err);
+       if (NULL == g_conn_sender) {
+               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] fail to get dbus connection");
+               return STT_ERROR_OPERATION_FAILED;
+       }
+
+       dbus_connection_set_exit_on_disconnect(g_conn_sender, false);
+
+       /* connect to the DBUS system bus, and check for errors */
+       if (NULL == g_conn_listener) {
+               g_conn_listener = dbus_bus_get_private(DBUS_BUS_SESSION, &err);
+               if (dbus_error_is_set(&err)) {
+                       SLOG(LOG_ERROR, TAG_STTC, "Dbus Connection Error (%s)", err.message);
+                       dbus_error_free(&err);
+               }
        }
 
-       if (NULL == g_conn) {
+       if (NULL == g_conn_listener) {
                SLOG(LOG_ERROR, TAG_STTC, "Fail to get dbus connection");
-               return STT_ERROR_OPERATION_FAILED; 
+               return STT_ERROR_OPERATION_FAILED;
        }
 
        int pid = getpid();
@@ -347,49 +696,38 @@ int stt_dbus_open_connection()
        memset(service_name, '\0', 64);
        snprintf(service_name, 64, "%s%d", STT_CLIENT_SERVICE_NAME, pid);
 
-       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "service name is %s\n", service_name);
+       SLOG(LOG_DEBUG, TAG_STTC, "service name is %s", service_name);
 
        /* register our name on the bus, and check for errors */
-       ret = dbus_bus_request_name(g_conn, service_name, DBUS_NAME_FLAG_REPLACE_EXISTING , &err);
+       dbus_bus_request_name(g_conn_listener, service_name, DBUS_NAME_FLAG_REPLACE_EXISTING , &err);
 
        if (dbus_error_is_set(&err)) {
-               SLOG(LOG_ERROR, TAG_STTC, "Name Error (%s)\n", err.message); 
-               dbus_error_free(&err); 
-       }
-
-       if (DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER != ret) {
-               SLOG(LOG_ERROR, TAG_STTC, "[Dbus ERROR] Fail to be primary owner");
-               return -2;
-       }
-
-       if( NULL != g_fd_handler ) {
-               SLOG(LOG_WARN, TAG_STTC, "The handler already exists.");
-               return 0;
+               SLOG(LOG_ERROR, TAG_STTC, "Name Error (%s)", err.message);
+               dbus_error_free(&err);
        }
 
-       char rule[128];
+       char rule[128] = {0, };
        snprintf(rule, 128, "type='signal',interface='%s%d'", STT_CLIENT_SERVICE_INTERFACE, pid);
 
        /* add a rule for which messages we want to see */
-       dbus_bus_add_match(g_conn, rule, &err); 
-       dbus_connection_flush(g_conn);
+       dbus_bus_add_match(g_conn_listener, rule, &err);
+       dbus_connection_flush(g_conn_listener);
 
-       if (dbus_error_is_set(&err)) { 
-               SLOG(LOG_ERROR, TAG_STTC, "Match Error (%s)\n", err.message);
+       if (dbus_error_is_set(&err)) {
+               SLOG(LOG_ERROR, TAG_STTC, "Match Error (%s)", err.message);
                dbus_error_free(&err);
-               return STT_ERROR_OPERATION_FAILED; 
+               return STT_ERROR_OPERATION_FAILED;
        }
 
        int fd = 0;
-       if (1 != dbus_connection_get_unix_fd(g_conn, &fd)) {
-               SLOG(LOG_ERROR, TAG_STTC, "fail to get fd from dbus");
+       if (true != dbus_connection_get_unix_fd(g_conn_listener, &fd)) {
+               SLOG(LOG_ERROR, TAG_STTC, "Fail to get fd from dbus");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, "Get fd from dbus : %d\n", fd);
+               SLOG(LOG_DEBUG, TAG_STTC, "Get fd from dbus : %d", fd);
        }
 
-       g_fd_handler = ecore_main_fd_handler_add(fd, ECORE_FD_READ, (Ecore_Fd_Cb)listener_event_callback, g_conn, NULL, NULL);
-
+       g_fd_handler = ecore_main_fd_handler_add(fd, ECORE_FD_READ, (Ecore_Fd_Cb)listener_event_callback, g_conn_listener, NULL, NULL);
        if (NULL == g_fd_handler) {
                SLOG(LOG_ERROR, TAG_STTC, "fail to get fd handler from ecore");
                return STT_ERROR_OPERATION_FAILED;
@@ -403,127 +741,212 @@ int stt_dbus_close_connection()
        DBusError err;
        dbus_error_init(&err);
 
+       if (NULL != g_fd_handler) {
+               ecore_main_fd_handler_del(g_fd_handler);
+               g_fd_handler = NULL;
+       }
+
        int pid = getpid();
 
        char service_name[64];
        memset(service_name, '\0', 64);
        snprintf(service_name, 64, "%s%d", STT_CLIENT_SERVICE_NAME, pid);
 
-       dbus_bus_release_name (g_conn, service_name, &err);
-
+       dbus_bus_release_name(g_conn_listener, service_name, &err);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Release name Error (%s)", err.message);
                dbus_error_free(&err);
        }
 
-       dbus_connection_close(g_conn);
+       dbus_connection_close(g_conn_sender);
+       dbus_connection_close(g_conn_listener);
+
+       dbus_connection_unref(g_conn_sender);
+       dbus_connection_unref(g_conn_listener);
+
+       g_conn_sender = NULL;
+       g_conn_listener = NULL;
 
-       g_fd_handler = NULL;
-       g_conn = NULL;
+       __stt_dbus_service_free();
 
        return 0;
 }
 
 int stt_dbus_reconnect()
 {
-       bool connected = dbus_connection_get_is_connected(g_conn);
-       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "[DBUS] %s", connected ? "Connected" : "Not connected");
+       bool sender_connected = dbus_connection_get_is_connected(g_conn_sender);
+       bool listener_connected = dbus_connection_get_is_connected(g_conn_listener);
+       SLOG(LOG_DEBUG, TAG_STTC, "[DBUS] Sender(%s) Listener(%s)",
+               sender_connected ? "Connected" : "Not connected", listener_connected ? "Connected" : "Not connected");
 
-       if (false == connected) {
+       if (false == sender_connected || false == listener_connected) {
                stt_dbus_close_connection();
 
-               if(0 != stt_dbus_open_connection()) {
+               if (0 != stt_dbus_open_connection()) {
                        SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to reconnect");
                        return -1;
-               } 
+               }
 
                SLOG(LOG_DEBUG, TAG_STTC, "[DBUS] Reconnect");
        }
-       
+
        return 0;
 }
 
-int stt_dbus_request_hello()
+void __stt_dbus_service_free()
 {
-       DBusMessage* msg;
-
-       msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME, 
-               STT_SERVER_SERVICE_OBJECT_PATH, 
-               STT_SERVER_SERVICE_INTERFACE, 
-               STT_METHOD_HELLO);
-
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> Request stt hello : Fail to make message"); 
-               return STT_ERROR_OPERATION_FAILED;
-       } 
-
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+       if (NULL != g_server_service_name) {
+               free(g_server_service_name);
+               g_server_service_name = NULL;
+       }
+       if (NULL != g_server_service_object) {
+               free(g_server_service_object);
+               g_server_service_object = NULL;
        }
+       if (NULL != g_server_service_interface) {
+               free(g_server_service_interface);
+               g_server_service_interface = NULL;
+       }
+}
 
+int stt_dbus_request_hello(int uid)
+{
+       stt_client_s* client = stt_client_get_by_uid(uid);
+
+       /* Check whether there is any dbus whose name has owner or not */
+       dbus_bool_t is_exist = FALSE;
        DBusError err;
        dbus_error_init(&err);
 
+       DBusMessage* msg = NULL;
        DBusMessage* result_msg = NULL;
-       int result = STT_DAEMON_NORMAL;
+       int result = 0;
+
+       if (g_conn_sender) {
+               if (NULL != client) {
+                       __stt_dbus_service_free();
+
+                       if (NULL == client->current_engine_id) {
+                               /* Default engine */
+                               g_server_service_name = strdup(STT_SERVER_SERVICE_NAME);
+                               if (NULL == g_server_service_name) {
+                                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to allocate memory");
+                                       return STT_ERROR_OUT_OF_MEMORY;
+                               }
+                               g_server_service_object = strdup(STT_SERVER_SERVICE_OBJECT_PATH);
+                               if (NULL == g_server_service_name) {
+                                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to allocate memory");
+                                       return STT_ERROR_OUT_OF_MEMORY;
+                               }
+                               g_server_service_interface = strdup(STT_SERVER_SERVICE_INTERFACE);
+                               if (NULL == g_server_service_name) {
+                                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to allocate memory");
+                                       return STT_ERROR_OUT_OF_MEMORY;
+                               }
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_short_time, &err);
-       dbus_message_unref(msg);
-       if (dbus_error_is_set(&err)) {
-               dbus_error_free(&err);
-       }
+                               msg = dbus_message_new_method_call(
+                                       STT_SERVER_SERVICE_NAME,
+                                       STT_SERVER_SERVICE_OBJECT_PATH,
+                                       STT_SERVER_SERVICE_INTERFACE,
+                                       STT_METHOD_HELLO);
+                       } else {
+                               /* Get service name, object, interface */
+                               SLOG(LOG_DEBUG, TAG_STTC, "[DBUS] current_engine_id: %s", client->current_engine_id);
 
-       int status = 0;
-       if (NULL != result_msg) {
-               dbus_message_get_args(result_msg, &err,
-                               DBUS_TYPE_INT32, &status,
-                               DBUS_TYPE_INVALID);
+                               g_server_service_name = __stt_get_service_name(client->current_engine_id);
+                               g_server_service_object = __stt_get_service_object(client->current_engine_id);
+                               g_server_service_interface = __stt_get_service_interface(client->current_engine_id);
 
-               dbus_message_unref(result_msg);
+                               if (NULL == g_server_service_name || NULL == g_server_service_object || NULL == g_server_service_interface) {
+                                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] dbus service info invalid");
+                                       return STT_ERROR_OPERATION_FAILED;
+                               }
+
+                               SLOG(LOG_DEBUG, TAG_STTC, "[DBUS] service name: %s, object path: %s, interface: %s", g_server_service_name, g_server_service_object, g_server_service_interface);
 
+                               /* Custom engine */
+                               is_exist = dbus_bus_name_has_owner(g_conn_sender, g_server_service_name, &err);
+                               SLOG(LOG_DEBUG, TAG_STTC, "[DBUS] is there dbus name has owner??: %s (g_server_service_name: %s)", (is_exist == TRUE) ? "True" : "False", g_server_service_name);
+
+                               if (TRUE == is_exist) {
+                                       SLOG(LOG_DEBUG, TAG_STTC, "[DBUS] dbus: is_exist: True");
+                                       msg = dbus_message_new_method_call(
+                                               g_server_service_name,
+                                               g_server_service_object,
+                                               g_server_service_interface,
+                                               STT_METHOD_HELLO);
+                               } else {
+                                       SLOG(LOG_DEBUG, TAG_STTC, "[DBUS] dbus: is_exist: False");
+                                       msg = dbus_message_new_method_call(
+                                               STT_SERVER_CUSTOM_SERVICE_NAME, 
+                                               STT_SERVER_CUSTOM_SERVICE_OBJECT_PATH, 
+                                               STT_SERVER_CUSTOM_SERVICE_INTERFACE, 
+                                               STT_METHOD_HELLO);
+                               }
+                       }
+               }
+       }
+
+       if (NULL == msg) {
+//             SLOG(LOG_ERROR, TAG_STTC, ">>>> Request stt hello : Fail to make message");
+               result = stt_dbus_reconnect();
+               if (0 != result)
+                       return STT_ERROR_OPERATION_FAILED;
+       }
+
+       if (g_conn_sender) {
+               result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_short_time, &err);
+               dbus_message_unref(msg);
                if (dbus_error_is_set(&err)) {
-                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
                        dbus_error_free(&err);
                }
 
-               SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt hello - %d", status);
-               result = status;
+               if (NULL != result_msg) {
+                       dbus_message_unref(result_msg);
+
+                       if (dbus_error_is_set(&err)) {
+                               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
+                               dbus_error_free(&err);
+                       }
+
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt hello");
+               } else {
+                       if (dbus_error_is_set(&err)) {
+                               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Get arguments error (%s)", err.message);
+                               dbus_error_free(&err);
+                       }
+
+                       result = STT_ERROR_TIMED_OUT;
+               }
        } else {
-               result = STT_ERROR_TIMED_OUT;
+               SLOG(LOG_WARN, TAG_STTC, "[WARN] dbus connection handle is null (%p)", g_conn_sender);
+               stt_dbus_reconnect();
+               result = STT_ERROR_OPERATION_FAILED;
        }
 
        return result;
 }
 
 
-int stt_dbus_request_initialize(int uid, bool* silence_supported)
+int stt_dbus_request_initialize(int uid, bool* silence_supported, bool* credential_needed)
 {
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME, 
-               STT_SERVER_SERVICE_OBJECT_PATH, 
-               STT_SERVER_SERVICE_INTERFACE, 
+               g_server_service_name,
+               g_server_service_object,
+               g_server_service_interface,
                STT_METHOD_INITIALIZE);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt initialize : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt initialize : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt initialize : uid(%d)", uid);
-       }
-
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt initialize : uid(%d)", uid);
        }
 
        int pid = getpid();
-       dbus_message_append_args( msg, 
+       dbus_message_append_args(msg,
                DBUS_TYPE_INT32, &pid,
                DBUS_TYPE_INT32, &uid,
                DBUS_TYPE_INVALID);
@@ -534,37 +957,60 @@ int stt_dbus_request_initialize(int uid, bool* silence_supported)
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
-       dbus_message_unref(msg);
-       if (dbus_error_is_set(&err)) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
-               dbus_error_free(&err);
-       }
+       if (g_conn_sender) {
+               result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
+               dbus_message_unref(msg);
+               if (dbus_error_is_set(&err)) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
+                       dbus_error_free(&err);
+               }
 
-       if (NULL != result_msg) {
-               dbus_message_get_args(result_msg, &err, 
-                       DBUS_TYPE_INT32, &result, 
-                       DBUS_TYPE_INT32, silence_supported,
-                       DBUS_TYPE_INVALID);
+               if (NULL != result_msg) {
+                       int int_silence_supported = 0;
+                       int int_credential_needed = 0;
+                       dbus_message_get_args(result_msg, &err,
+                               DBUS_TYPE_INT32, &result,
+                               DBUS_TYPE_INT32, &int_silence_supported,
+                               DBUS_TYPE_INT32, &int_credential_needed,
+                               DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
-                       SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)\n", err.message);
-                       dbus_error_free(&err); 
-                       result = STT_ERROR_OPERATION_FAILED;
-               }
+                       *silence_supported = (bool)(int_silence_supported);
+                       *credential_needed = (bool)(int_credential_needed);
 
-               if (0 == result) {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt initialize : result = %d, silence(%d)",
-                               result, *silence_supported);
+                       if (dbus_error_is_set(&err)) {
+                               SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
+                               dbus_error_free(&err);
+                               result = STT_ERROR_OPERATION_FAILED;
+                       }
+
+                       if (0 == result) {
+                               SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt initialize : result = %d, silence(%d), credential(%d)",
+                                       result, *silence_supported, *credential_needed);
+
+                               /* add a rule for daemon error */
+                               char rule_err[256] = {0, };
+                               snprintf(rule_err, 256, "sender='org.freedesktop.DBus',path='/org/freedesktop/DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',type='signal',arg0='%s'", g_server_service_interface);
+                               dbus_bus_add_match(g_conn_listener, rule_err, &err);
+                               dbus_connection_flush(g_conn_listener);
+
+                               if (dbus_error_is_set(&err)) {
+                                       SLOG(LOG_ERROR, TAG_STTC, "Match Error (%s)", err.message);
+                                       dbus_error_free(&err);
+                                       return STT_ERROR_OPERATION_FAILED;
+                               }
+                       } else {
+                               SLOG(LOG_ERROR, TAG_STTC, "<<<< stt initialize : result = %d", result);
+                       }
+
+                       dbus_message_unref(result_msg);
                } else {
-                       SLOG(LOG_ERROR, TAG_STTC, "<<<< stt initialize : result = %d", result);
+                       SLOG(LOG_ERROR, TAG_STTC, "<<<< Result message is NULL");
+                       stt_dbus_reconnect();
+                       result = STT_ERROR_TIMED_OUT;
                }
-
-               dbus_message_unref(result_msg);
        } else {
-               SLOG(LOG_ERROR, TAG_STTC, "<<<< Result message is NULL");
-               stt_dbus_reconnect();
-               result = STT_ERROR_TIMED_OUT;
+               SLOG(LOG_WARN, TAG_STTC, "[WARN] dbus connection handle is null (%p)", g_conn_sender);
+               result = STT_ERROR_OPERATION_FAILED;
        }
 
        return result;
@@ -574,34 +1020,40 @@ int stt_dbus_request_finalize(int uid)
 {
        DBusMessage* msg;
 
+       DBusError err;
+       dbus_error_init(&err);
+
+       /* remove a rule for daemon error */
+       char rule_err[256] = {0, };
+       snprintf(rule_err, 256, "sender='org.freedesktop.DBus',path='/org/freedesktop/DBus',interface='org.freedesktop.DBus',member='NameOwnerChanged',type='signal',arg0='%s'", g_server_service_interface);
+       dbus_bus_remove_match(g_conn_listener, rule_err, &err);
+       dbus_connection_flush(g_conn_listener);
+       if (dbus_error_is_set(&err)) {
+               SLOG(LOG_ERROR, TAG_STTC, "Match Error (%s)", err.message);
+               dbus_error_free(&err);
+       }
+
+       SLOG(LOG_DEBUG, TAG_STTC, "[dbus_info] service name: %s, service object: %s, service interface: %s", g_server_service_name, g_server_service_object, g_server_service_interface);
+
        msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME
-               STT_SERVER_SERVICE_OBJECT_PATH
-               STT_SERVER_SERVICE_INTERFACE
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
                STT_METHOD_FINALIZE);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt finalize : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt finalize : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt finalize : uid(%d)", uid);
-       }
-
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt finalize : uid(%d)", uid);
        }
 
        dbus_message_append_args(msg, DBUS_TYPE_INT32, &uid, DBUS_TYPE_INVALID);
 
-       DBusError err;
-       dbus_error_init(&err);
-
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_short_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_short_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -613,9 +1065,9 @@ int stt_dbus_request_finalize(int uid)
                                DBUS_TYPE_INT32, &result,
                                DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
 
@@ -635,30 +1087,25 @@ int stt_dbus_request_finalize(int uid)
        return result;
 }
 
-int stt_dbus_request_set_current_engine(int uid, const char* engine_id, bool* silence_supported)
+int stt_dbus_request_set_current_engine(int uid, const char* engine_id, bool* silence_supported, bool* credential_needed)
 {
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME
-               STT_SERVER_SERVICE_OBJECT_PATH
-               STT_SERVER_SERVICE_INTERFACE
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
                STT_METHOD_SET_CURRENT_ENGINE);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt set engine : Fail to make message"); 
+
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt set engine : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt set engine : uid(%d)", uid);
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt set engine : uid(%d), engine_id(%s)", uid, (NULL == engine_id) ? "NULL" : engine_id);
        }
 
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
-       }
-
-       dbus_message_append_args( msg, 
+       dbus_message_append_args(msg,
                DBUS_TYPE_INT32, &uid,
                DBUS_TYPE_STRING, &engine_id,
                DBUS_TYPE_INVALID);
@@ -669,7 +1116,7 @@ int stt_dbus_request_set_current_engine(int uid, const char* engine_id, bool* si
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -677,22 +1124,29 @@ int stt_dbus_request_set_current_engine(int uid, const char* engine_id, bool* si
        }
 
        if (NULL != result_msg) {
+               int int_silence_supported = 0;
+               int int_credential_needed = 0;
+
                dbus_message_get_args(result_msg, &err, 
                        DBUS_TYPE_INT32, &result, 
-                       DBUS_TYPE_INT32, silence_supported,
+                       DBUS_TYPE_INT32, &int_silence_supported,
+                       DBUS_TYPE_INT32, &int_credential_needed,
                        DBUS_TYPE_INVALID);
 
+               *silence_supported = (bool)(int_silence_supported);
+               *credential_needed = (bool)(int_credential_needed);
+
                if (dbus_error_is_set(&err)) {
-                       SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)\n", err.message);
-                       dbus_error_free(&err); 
+                       SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
 
                dbus_message_unref(result_msg);
 
                if (0 == result) {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set engine : result = %d , silence(%d)", 
-                               result, *silence_supported);
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set engine : result = %d , silence(%d), credential(%d)",
+                               result, *silence_supported, *credential_needed);
                } else {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< stt set engine : result = %d", result);
                }
@@ -715,22 +1169,16 @@ int stt_dbus_request_check_app_agreed(int uid, const char* appid, bool* value)
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME
-               STT_SERVER_SERVICE_OBJECT_PATH
-               STT_SERVER_SERVICE_INTERFACE
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
                STT_METHOD_CHECK_APP_AGREED);
 
        if (NULL == msg) {
                SLOG(LOG_ERROR, TAG_STTC, ">>>> stt check app agreed : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt check app agreed : uid(%d) appid(%s)", uid, appid);
-       }
-
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt check app agreed : uid(%d) appid(%s)", uid, appid);
        }
 
        dbus_message_append_args(msg,
@@ -745,7 +1193,7 @@ int stt_dbus_request_check_app_agreed(int uid, const char* appid, bool* value)
        int result = STT_ERROR_OPERATION_FAILED;
        int available = -1;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -760,14 +1208,14 @@ int stt_dbus_request_check_app_agreed(int uid, const char* appid, bool* value)
 
                if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
 
                if (0 == result) {
                        *value = (bool)available;
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt check app agreed : result = %d, available = %d", result, *value);
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt check app agreed : result = %d, available = %d", result, *value);
                } else {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< stt check app agreed : result = %d", result);
                }
@@ -790,22 +1238,16 @@ int stt_dbus_request_get_support_langs(int uid, stt_h stt, stt_supported_languag
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME
-               STT_SERVER_SERVICE_OBJECT_PATH
-               STT_SERVER_SERVICE_INTERFACE
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
                STT_METHOD_GET_SUPPORT_LANGS);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get supported languages : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get supported languages : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt get supported languages : uid(%d)", uid);
-       }
-
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt get supported languages : uid(%d)", uid);
        }
 
        dbus_message_append_args(msg, DBUS_TYPE_INT32, &uid, DBUS_TYPE_INVALID);
@@ -817,7 +1259,7 @@ int stt_dbus_request_get_support_langs(int uid, stt_h stt, stt_supported_languag
        DBusMessageIter args;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err );
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -836,7 +1278,7 @@ int stt_dbus_request_get_support_langs(int uid, stt_h stt, stt_supported_languag
                                SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt get support languages : result = %d", result);
 
                                /* Get voice size */
-                               int size = 0; 
+                               int size = 0;
                                if (DBUS_TYPE_INT32 == dbus_message_iter_get_arg_type(&args)) {
                                        dbus_message_iter_get_basic(&args, &size);
                                        dbus_message_iter_next(&args);
@@ -845,10 +1287,10 @@ int stt_dbus_request_get_support_langs(int uid, stt_h stt, stt_supported_languag
                                if (0 >= size) {
                                        SLOG(LOG_ERROR, TAG_STTC, "<<<< stt size of language error : size = %d", size);
                                } else {
-                                       int i=0;
+                                       int i = 0;
                                        char* temp_lang;
 
-                                       for (i=0 ; i<size ; i++) {
+                                       for (i = 0; i < size; i++) {
                                                dbus_message_iter_get_basic(&args, &(temp_lang));
                                                dbus_message_iter_next(&args);
 
@@ -860,7 +1302,7 @@ int stt_dbus_request_get_support_langs(int uid, stt_h stt, stt_supported_languag
                        } else {
                                SLOG(LOG_ERROR, TAG_STTC, "<<<< stt get support languages : result = %d", result);
                        }
-               } 
+               }
                dbus_message_unref(result_msg);
        } else {
                SLOG(LOG_ERROR, TAG_STTC, "<<<< stt get support languages : result message is NULL");
@@ -881,25 +1323,19 @@ int stt_dbus_request_get_default_lang(int uid, char** language)
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME
-               STT_SERVER_SERVICE_OBJECT_PATH
-               STT_SERVER_SERVICE_INTERFACE
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
                STT_METHOD_GET_CURRENT_LANG);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get default language : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get default language : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt get default language  : uid(%d)", uid);
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt get default language  : uid(%d)", uid);
        }
 
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
-       }
-
-       dbus_message_append_args( msg, 
+       dbus_message_append_args(msg,
                DBUS_TYPE_INT32, &uid,
                DBUS_TYPE_INVALID);
 
@@ -910,7 +1346,7 @@ int stt_dbus_request_get_default_lang(int uid, char** language)
        int result = STT_ERROR_OPERATION_FAILED;
        char* temp_lang = NULL;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -923,16 +1359,16 @@ int stt_dbus_request_get_default_lang(int uid, char** language)
                        DBUS_TYPE_STRING, &temp_lang,
                        DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
 
                if (0 == result) {
                        *language = strdup(temp_lang);
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt get default language : result = %d, language = %s", result, *language);
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt get default language : result = %d, language = %s", result, *language);
                } else {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< stt get default language : result = %d", result);
                }
@@ -945,9 +1381,9 @@ int stt_dbus_request_get_default_lang(int uid, char** language)
        return result;
 }
 
-int stt_dbus_request_is_recognition_type_supported(int uid, const char* type, bool* support)
+int stt_dbus_request_set_private_data(int uid, const char* key, const char* data)
 {
-       if (NULL == support || NULL == type) {
+       if (NULL == key || NULL == data) {
                SLOG(LOG_ERROR, TAG_STTC, "Input parameter is NULL");
                return STT_ERROR_INVALID_PARAMETER;
        }
@@ -955,25 +1391,165 @@ int stt_dbus_request_is_recognition_type_supported(int uid, const char* type, bo
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-                  STT_SERVER_SERVICE_NAME
-                  STT_SERVER_SERVICE_OBJECT_PATH
-                  STT_SERVER_SERVICE_INTERFACE
-                  STT_METHOD_IS_TYPE_SUPPORTED);
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
+               STT_METHOD_SET_PRIVATE_DATA);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt is partial result supported : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt set private data : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt is recognition type supported : uid(%d) type(%s)", uid, type);
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt set private data : uid(%d)", uid);
        }
 
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+       if (true != dbus_message_append_args(msg,
+                       DBUS_TYPE_INT32, &uid,
+                       DBUS_TYPE_STRING, &key,
+                       DBUS_TYPE_STRING, &data,
+                       DBUS_TYPE_INVALID)) {
+               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to append args");
+               return STT_ERROR_OPERATION_FAILED;
        }
 
-       dbus_message_append_args( msg, 
+       DBusError err;
+       dbus_error_init(&err);
+
+       DBusMessage* result_msg;
+       int result = STT_ERROR_OPERATION_FAILED;
+
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
+       dbus_message_unref(msg);
+       if (dbus_error_is_set(&err)) {
+               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
+               dbus_error_free(&err);
+       }
+
+       if (NULL != result_msg) {
+               dbus_message_get_args(result_msg, &err,
+                       DBUS_TYPE_INT32, &result,
+                       DBUS_TYPE_INVALID);
+
+               if (dbus_error_is_set(&err)) {
+                       SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
+                       dbus_error_free(&err);
+                       result = STT_ERROR_OPERATION_FAILED;
+               }
+               dbus_message_unref(result_msg);
+
+               if (0 == result) {
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set private data : result = %d", result);
+               } else {
+                       SLOG(LOG_ERROR, TAG_STTC, "<<<< stt set private data : result = %d", result);
+               }
+       } else {
+               SLOG(LOG_ERROR, TAG_STTC, "<<<< Result message is NULL");
+               stt_dbus_reconnect();
+               result = STT_ERROR_TIMED_OUT;
+       }
+
+       return result;
+}
+
+int stt_dbus_request_get_private_data(int uid, const char* key, char** data)
+{
+       if (NULL == key || NULL == data) {
+               SLOG(LOG_ERROR, TAG_STTC, "Input parameter is NULL");
+               return STT_ERROR_INVALID_PARAMETER;
+       }
+
+       DBusMessage* msg;
+
+       msg = dbus_message_new_method_call(
+               g_server_service_name, 
+               g_server_service_object, 
+               g_server_service_interface, 
+               STT_METHOD_GET_PRIVATE_DATA);
+
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt get private data : Fail to make message");
+               return STT_ERROR_OPERATION_FAILED;
+       } else {
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt get private data : uid(%d)", uid);
+       }
+
+       if (true != dbus_message_append_args(msg,
+                       DBUS_TYPE_INT32, &uid,
+                       DBUS_TYPE_STRING, &key,
+                       DBUS_TYPE_INVALID)) {
+               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Fail to append args");
+               return STT_ERROR_OPERATION_FAILED;
+       }
+
+       DBusError err;
+       dbus_error_init(&err);
+
+       DBusMessage* result_msg;
+       int result = STT_ERROR_OPERATION_FAILED;
+
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
+       dbus_message_unref(msg);
+       if (dbus_error_is_set(&err)) {
+               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
+               dbus_error_free(&err);
+       }
+
+       char* temp = NULL;
+       if (NULL != result_msg) {
+               dbus_message_get_args(result_msg, &err,
+                       DBUS_TYPE_INT32, &result,
+                       DBUS_TYPE_STRING, &temp,
+                       DBUS_TYPE_INVALID);
+
+               if (dbus_error_is_set(&err)) {
+                       SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
+                       dbus_error_free(&err);
+                       result = STT_ERROR_OPERATION_FAILED;
+               }
+               dbus_message_unref(result_msg);
+
+               if (0 == result) {
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt get private data : result = %d", result);
+                       if (NULL != temp) {
+                               *data = strdup(temp);
+                       }
+               } else {
+                       SLOG(LOG_ERROR, TAG_STTC, "<<<< stt get private data : result = %d", result);
+               }
+       } else {
+               SLOG(LOG_ERROR, TAG_STTC, "<<<< Result message is NULL");
+               stt_dbus_reconnect();
+               result = STT_ERROR_TIMED_OUT;
+       }
+
+       return result;
+}
+
+
+
+int stt_dbus_request_is_recognition_type_supported(int uid, const char* type, bool* support)
+{
+       if (NULL == support || NULL == type) {
+               SLOG(LOG_ERROR, TAG_STTC, "Input parameter is NULL");
+               return STT_ERROR_INVALID_PARAMETER;
+       }
+
+       DBusMessage* msg;
+
+       msg = dbus_message_new_method_call(
+               g_server_service_name, 
+               g_server_service_object, 
+               g_server_service_interface, 
+               STT_METHOD_IS_TYPE_SUPPORTED);
+
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt is partial result supported : Fail to make message");
+               return STT_ERROR_OPERATION_FAILED;
+       } else {
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt is recognition type supported : uid(%d) type(%s)", uid, type);
+       }
+
+       dbus_message_append_args(msg,
                DBUS_TYPE_INT32, &uid,
                DBUS_TYPE_STRING, &type,
                DBUS_TYPE_INVALID);
@@ -985,7 +1561,7 @@ int stt_dbus_request_is_recognition_type_supported(int uid, const char* type, bo
        int result = STT_ERROR_OPERATION_FAILED;
        int result_support = -1;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -998,16 +1574,16 @@ int stt_dbus_request_is_recognition_type_supported(int uid, const char* type, bo
                        DBUS_TYPE_INT32, &result_support,
                        DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
 
                if (0 == result) {
                        *support = (bool)result_support;
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt is recognition type supported : result = %d, support = %s", result, *support ? "true" : "false");
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt is recognition type supported : result = %d, support = %s", result, *support ? "true" : "false");
                } else {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< stt is recognition type supported : result = %d", result);
                }
@@ -1030,25 +1606,19 @@ int stt_dbus_request_set_start_sound(int uid, const char* file)
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-                  STT_SERVER_SERVICE_NAME
-                  STT_SERVER_SERVICE_OBJECT_PATH
-                  STT_SERVER_SERVICE_INTERFACE
-                  STT_METHOD_SET_START_SOUND);
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
+               STT_METHOD_SET_START_SOUND);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt set start sound : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt set start sound : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt set start sound : uid(%d) file(%s)", uid, file);
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt set start sound : uid(%d) file(%s)", uid, file);
        }
 
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
-       }
-
-       dbus_message_append_args( msg, 
+       dbus_message_append_args(msg,
                DBUS_TYPE_INT32, &uid,
                DBUS_TYPE_STRING, &file,
                DBUS_TYPE_INVALID);
@@ -1059,7 +1629,7 @@ int stt_dbus_request_set_start_sound(int uid, const char* file)
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -1071,15 +1641,15 @@ int stt_dbus_request_set_start_sound(int uid, const char* file)
                        DBUS_TYPE_INT32, &result,
                        DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
 
                if (0 == result) {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set start sound : result = %d", result);
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set start sound : result = %d", result);
                } else {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< stt set start sound : result = %d", result);
                }
@@ -1097,25 +1667,19 @@ int stt_dbus_request_unset_start_sound(int uid)
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-                  STT_SERVER_SERVICE_NAME
-                  STT_SERVER_SERVICE_OBJECT_PATH
-                  STT_SERVER_SERVICE_INTERFACE
-                  STT_METHOD_UNSET_START_SOUND);
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
+               STT_METHOD_UNSET_START_SOUND);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt unset start sound : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt unset start sound : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt unset start sound : uid(%d)", uid);
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt unset start sound : uid(%d)", uid);
        }
 
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
-       }
-
-       dbus_message_append_args( msg, 
+       dbus_message_append_args(msg,
                DBUS_TYPE_INT32, &uid,
                DBUS_TYPE_INVALID);
 
@@ -1125,7 +1689,7 @@ int stt_dbus_request_unset_start_sound(int uid)
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -1137,15 +1701,15 @@ int stt_dbus_request_unset_start_sound(int uid)
                        DBUS_TYPE_INT32, &result,
                        DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
 
                if (0 == result) {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt unset start sound : result = %d", result);
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt unset start sound : result = %d", result);
                } else {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< stt unset start sound : result = %d", result);
                }
@@ -1168,25 +1732,19 @@ int stt_dbus_request_set_stop_sound(int uid, const char* file)
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-                  STT_SERVER_SERVICE_NAME
-                  STT_SERVER_SERVICE_OBJECT_PATH
-                  STT_SERVER_SERVICE_INTERFACE
-                  STT_METHOD_SET_STOP_SOUND);
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
+               STT_METHOD_SET_STOP_SOUND);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt set stop sound : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt set stop sound : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt set stop sound : uid(%d) file(%s)", uid, file);
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt set stop sound : uid(%d) file(%s)", uid, file);
        }
 
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
-       }
-
-       dbus_message_append_args( msg, 
+       dbus_message_append_args(msg,
                DBUS_TYPE_INT32, &uid,
                DBUS_TYPE_STRING, &file,
                DBUS_TYPE_INVALID);
@@ -1197,7 +1755,7 @@ int stt_dbus_request_set_stop_sound(int uid, const char* file)
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -1209,15 +1767,15 @@ int stt_dbus_request_set_stop_sound(int uid, const char* file)
                        DBUS_TYPE_INT32, &result,
                        DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
 
                if (0 == result) {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set stop sound : result = %d", result);
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt set stop sound : result = %d", result);
                } else {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< stt set stop sound : result = %d", result);
                }
@@ -1235,25 +1793,19 @@ int stt_dbus_request_unset_stop_sound(int uid)
        DBusMessage* msg;
 
        msg = dbus_message_new_method_call(
-                  STT_SERVER_SERVICE_NAME
-                  STT_SERVER_SERVICE_OBJECT_PATH
-                  STT_SERVER_SERVICE_INTERFACE
-                  STT_METHOD_UNSET_STOP_SOUND);
+               g_server_service_name
+               g_server_service_object
+               g_server_service_interface
+               STT_METHOD_UNSET_STOP_SOUND);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt unset stop sound : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt unset stop sound : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt unset stop sound : uid(%d)", uid);
-       }
-
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt unset stop sound : uid(%d)", uid);
        }
 
-       dbus_message_append_args( msg, 
+       dbus_message_append_args(msg,
                DBUS_TYPE_INT32, &uid,
                DBUS_TYPE_INVALID);
 
@@ -1263,7 +1815,7 @@ int stt_dbus_request_unset_stop_sound(int uid)
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -1275,15 +1827,15 @@ int stt_dbus_request_unset_stop_sound(int uid)
                        DBUS_TYPE_INT32, &result,
                        DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
 
                if (0 == result) {
-                       SECURE_SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt unset stop sound : result = %d", result);
+                       SLOG(LOG_DEBUG, TAG_STTC, "<<<< stt unset stop sound : result = %d", result);
                } else {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< stt unset stop sound : result = %d", result);
                }
@@ -1296,7 +1848,7 @@ int stt_dbus_request_unset_stop_sound(int uid)
        return result;
 }
 
-int stt_dbus_request_start(int uid, const char* lang, const char* type, int silence, const char* appid)
+int stt_dbus_request_start(int uid, const char* lang, const char* type, int silence, const char* appid, const char* credential)
 {
        if (NULL == lang || NULL == type || NULL == appid) {
                SLOG(LOG_ERROR, TAG_STTC, "Input parameter is NULL");
@@ -1307,39 +1859,72 @@ int stt_dbus_request_start(int uid, const char* lang, const char* type, int sile
 
        /* create a signal & check for errors */
        msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME,
-               STT_SERVER_SERVICE_OBJECT_PATH
-               STT_SERVER_SERVICE_INTERFACE,   
-               STT_METHOD_START);              
+               g_server_service_name, 
+               g_server_service_object
+               g_server_service_interface, 
+               STT_METHOD_START);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt start : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt start : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt start : uid(%d), language(%s), type(%s)", uid, lang, type);
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt start : uid(%d), language(%s), type(%s)", uid, lang, type);
        }
 
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+       char *temp = NULL;
+       if (NULL == credential) {
+               temp = strdup("NULL");
+       } else {
+               temp = strdup(credential);
        }
 
-       dbus_message_append_args( msg, 
-               DBUS_TYPE_INT32, &uid, 
-               DBUS_TYPE_STRING, &lang,   
+       dbus_message_append_args(msg,
+               DBUS_TYPE_INT32, &uid,
+               DBUS_TYPE_STRING, &lang,
                DBUS_TYPE_STRING, &type,
                DBUS_TYPE_INT32, &silence,
                DBUS_TYPE_STRING, &appid,
+               DBUS_TYPE_STRING, &temp,
                DBUS_TYPE_INVALID);
-       
+#if 1
+       if (g_conn_sender) {
+               dbus_message_set_no_reply(msg, TRUE);
+
+               if (!dbus_connection_send(g_conn_sender, msg, NULL)) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[Dbus ERROR] <<<< stt start message : Out Of Memory !");
+                       if (NULL != temp) {
+                                       free(temp);
+                                       temp = NULL;
+                       }
+                       return STT_ERROR_OUT_OF_MEMORY;
+               } else {
+                       dbus_connection_flush(g_conn_sender);
+               }
+
+               dbus_message_unref(msg);
+
+       } else {
+               SLOG(LOG_WARN, TAG_STTC, "[WARN] dbus connection handle is null (%p)", g_conn_sender);
+               if (NULL != temp) {
+                               free(temp);
+                               temp = NULL;
+               }
+               return STT_ERROR_OPERATION_FAILED;
+       }
+
+       if (NULL != temp) {
+                       free(temp);
+                       temp = NULL;
+       }
+       return 0;
+#else
        DBusError err;
        dbus_error_init(&err);
 
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -1351,9 +1936,9 @@ int stt_dbus_request_start(int uid, const char* lang, const char* type, int sile
                        DBUS_TYPE_INT32, &result,
                        DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
@@ -1370,6 +1955,7 @@ int stt_dbus_request_start(int uid, const char* lang, const char* type, int sile
        }
 
        return result;
+#endif
 }
 
 int stt_dbus_request_stop(int uid)
@@ -1378,35 +1964,47 @@ int stt_dbus_request_stop(int uid)
 
        /* create a signal & check for errors */
        msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME,
-               STT_SERVER_SERVICE_OBJECT_PATH
-               STT_SERVER_SERVICE_INTERFACE,   
+               g_server_service_name, 
+               g_server_service_object
+               g_server_service_interface, 
                STT_METHOD_STOP);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt stop : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt stop : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt stop : uid(%d)", uid);
-       }
-
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt stop : uid(%d)", uid);
        }
 
        dbus_message_append_args(msg, 
                DBUS_TYPE_INT32, &uid, 
                DBUS_TYPE_INVALID);
+#if 1
+       if (g_conn_sender) {
+               dbus_message_set_no_reply(msg, TRUE);
+
+               if (!dbus_connection_send(g_conn_sender, msg, NULL)) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[Dbus ERROR] <<<< stt stop message : Out Of Memory !");
+                       return STT_ERROR_OUT_OF_MEMORY;
+               } else {
+                       dbus_connection_flush(g_conn_sender);
+               }
 
+               dbus_message_unref(msg);
+       } else {
+               SLOG(LOG_WARN, TAG_STTC, "[WARN] dbus connection handle is null (%p)", g_conn_sender);
+               return STT_ERROR_OPERATION_FAILED;
+       }
+
+       return 0;
+#else
        DBusError err;
        dbus_error_init(&err);
 
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -1418,9 +2016,9 @@ int stt_dbus_request_stop(int uid)
                        DBUS_TYPE_INT32, &result,
                        DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
@@ -1437,6 +2035,7 @@ int stt_dbus_request_stop(int uid)
        }
 
        return result;
+#endif
 }
 
 int stt_dbus_request_cancel(int uid)
@@ -1445,35 +2044,47 @@ int stt_dbus_request_cancel(int uid)
 
        /* create a signal & check for errors */
        msg = dbus_message_new_method_call(
-               STT_SERVER_SERVICE_NAME,
-               STT_SERVER_SERVICE_OBJECT_PATH, /* object name of the signal */
-               STT_SERVER_SERVICE_INTERFACE,   /* interface name of the signal */
-               STT_METHOD_CANCEL);     /* name of the signal */
+               g_server_service_name, 
+               g_server_service_object, 
+               g_server_service_interface, 
+               STT_METHOD_CANCEL);
 
-       if (NULL == msg) { 
-               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt cancel : Fail to make message"); 
+       if (NULL == msg) {
+               SLOG(LOG_ERROR, TAG_STTC, ">>>> stt cancel : Fail to make message");
                return STT_ERROR_OPERATION_FAILED;
        } else {
-               SECURE_SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt cancel : uid(%d)", uid);
-       }
-
-       if (NULL == g_conn) {
-               SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Connection is NOT valid");
-               dbus_message_unref(msg);
-               return STT_ERROR_INVALID_STATE;
+               SLOG(LOG_DEBUG, TAG_STTC, ">>>> stt cancel : uid(%d)", uid);
        }
 
        dbus_message_append_args(msg, 
                DBUS_TYPE_INT32, &uid, 
                DBUS_TYPE_INVALID);
+#if 1
+       if (g_conn_sender) {
+               dbus_message_set_no_reply(msg, TRUE);
+
+               if (!dbus_connection_send(g_conn_sender, msg, NULL)) {
+                       SLOG(LOG_ERROR, TAG_STTC, "[Dbus ERROR] <<<< stt stop message : Out Of Memory !");
+                       return STT_ERROR_OUT_OF_MEMORY;
+               } else {
+                       dbus_connection_flush(g_conn_sender);
+               }
+
+               dbus_message_unref(msg);
+       } else {
+               SLOG(LOG_WARN, TAG_STTC, "[WARN] dbus connection handle is null (%p)", g_conn_sender);
+               return STT_ERROR_OPERATION_FAILED;
+       }
 
+       return 0;
+#else
        DBusError err;
        dbus_error_init(&err);
 
        DBusMessage* result_msg;
        int result = STT_ERROR_OPERATION_FAILED;
 
-       result_msg = dbus_connection_send_with_reply_and_block(g_conn, msg, g_waiting_time, &err);
+       result_msg = dbus_connection_send_with_reply_and_block(g_conn_sender, msg, g_waiting_time, &err);
        dbus_message_unref(msg);
        if (dbus_error_is_set(&err)) {
                SLOG(LOG_ERROR, TAG_STTC, "[ERROR] Send Error (%s)", err.message);
@@ -1485,9 +2096,9 @@ int stt_dbus_request_cancel(int uid)
                        DBUS_TYPE_INT32, &result,
                        DBUS_TYPE_INVALID);
 
-               if (dbus_error_is_set(&err)) { 
+               if (dbus_error_is_set(&err)) {
                        SLOG(LOG_ERROR, TAG_STTC, "<<<< Get arguments error (%s)", err.message);
-                       dbus_error_free(&err); 
+                       dbus_error_free(&err);
                        result = STT_ERROR_OPERATION_FAILED;
                }
                dbus_message_unref(result_msg);
@@ -1504,4 +2115,5 @@ int stt_dbus_request_cancel(int uid)
        }
 
        return result;
+#endif
 }