Fix: advertisinog stopped suddenly
[platform/core/connectivity/bluetooth-frwk.git] / bt-service-adaptation / services / gatt / bt-service-gatt.c
index 365bb55..18798a4 100644 (file)
@@ -54,6 +54,7 @@
 #define BT_UUID_STRING_MAX 64
 #define BT_SENDER_MAX_LENGTH 50
 #define MAX_APPS_SUPPORTED 11 /* Slot 0 is not used */
+#define BT_DEFAULT_ATT_MTU 23
 
 #ifdef TIZEN_GATT_CLIENT
 #define NUM_UUID 20
@@ -132,8 +133,39 @@ struct gatt_server_info_t {
        char *addr;                                      /* Remote GATT Server address */
 };
 
+struct gatt_client_info_t {
+       int connection_id;                               /* This value will uniquely identify a GATT client-server connection */
+       int instance_id;                                 /* This value unique identifies a GATT server instance */
+       char *addr;                                      /* Remote GATT client address */
+};
+
+/* TODO:
+ * Remove this feature if code is verified
+ * Remove gatt_client/server_info_t and use gatt_conn_info_t
+ * Remove gatt_client/server_info_list and use gatt_conn_info_list
+ */
+#define __INTEGRATE_GATT_INFO__
+#ifndef __INTEGRATE_GATT_INFO__
 /* Linked List of connected Remote GATT Servers */
 static GSList *gatt_server_info_list = NULL;
+/* Linked List of connected Remote GATT clients */
+static GSList *gatt_client_info_list = NULL;
+#else
+/* GATT Connection Info List Structure */
+struct gatt_conn_info_t {
+       char *addr;        /* Remote GATT address */
+       int connection_id; /* This value will uniquely identify a GATT client-server connection */
+       int client_id;     /* This value unique identifies a GATT Client instance */
+       int instance_id;   /* This value unique identifies a GATT Server instance */
+};
+
+/* Linked List of connected Remote GATT info */
+static GSList *gatt_conn_info_list = NULL;
+#define gatt_server_info_t gatt_conn_info_t
+#define gatt_client_info_t gatt_conn_info_t
+#define gatt_server_info_list gatt_conn_info_list
+#define gatt_client_info_list gatt_conn_info_list
+#endif
 
 typedef struct {
        gboolean is_changed;
@@ -179,8 +211,7 @@ typedef struct {
        int inst_id;
 } bt_gatt_included_service_info_t;
 
-GSList *list_gatt_info;
-
+static GSList *list_gatt_info = NULL;
 
 #endif
 
@@ -214,13 +245,6 @@ struct gatt_server_req_info {
        char *addr;                                      /* Remote GATT client address */
 };
 
-/* GATT Client Info List Structure */
-struct gatt_client_info_t {
-       int connection_id;                               /* This value will uniquely identify a GATT client-server connection */
-       int instance_id;                                 /* This value unique identifies a GATT server instance */
-       char *addr;                                      /* Remote GATT client address */
-};
-
 /* GATT Indicate confirm result  */
 struct gatt_indicate_cfm_result_info_t {
        int result;                                      /* Result of event */
@@ -236,7 +260,13 @@ static struct gatt_server_req_info *__bt_gatt_server_find_request_info(int reque
 static int __bt_gatt_send_indication_to_all_connected_clients(bluetooth_gatt_att_data_t *data,
                bluetooth_gatt_server_indication_params_t *param);
 
-static void __bt_remove_all_service_handles(int instance_id);
+static void __bt_remove_all_service_handles(bt_service_app_info_t *app_info);
+
+static void __bt_free_service_info(bt_gatt_service_info_t *service_info);
+
+static int __bt_unregister_gatt_client_instance(int client_if);
+
+static void __bt_service_reset_gatt_data(void);
 
 #ifdef TIZEN_GATT_CLIENT
 static void __bt_handle_client_instance_registered(event_gattc_register_t *data);
@@ -251,21 +281,33 @@ static void __bt_handle_client_characteristic_read_data(event_gattc_read_data *e
 static void __bt_handle_client_descriptor_read_data(event_gattc_read_data *event_data);
 static void __bt_handle_client_characteristic_write_data(event_gattc_write_data *event_data);
 static void __bt_handle_client_descriptor_write_data(event_gattc_write_data *event_data);
-static int __bt_do_unregister_gatt_instance(int instance_id);
 static void __bt_hanlde_le_device_disconnection(event_dev_conn_status_t *event_data);
 static void __bt_handle_client_notification_registered(event_gattc_regdereg_notify_t *event_data,
                gboolean is_registered);
-
+static void __bt_handle_client_notification_data(event_gattc_notify_data *event_data);
+static void __bt_handle_client_service_changed_ind(event_gattc_service_changed_data *event_data);
+static void __bt_handle_client_mtu_exchange_completed(event_gattc_mtu_configured_t *event_data);
 #endif
 
-static int __bt_do_unregister_server_instance(int server_instance);
+static int __bt_unregister_gatt_server_instance(int server_instance);
+static void __bt_cleanup_remote_services(struct gatt_server_info_t *conn_info);
+
+/*mtu device list*/
+struct gatt_mtu_info_t {
+       char *addr;               /* Remote GATT Server address */
+       int att_mtu;
+};
+
+static GSList *gatt_mtu_info_list = NULL;
+
+static struct gatt_mtu_info_t *__bt_find_mtu_gatt_device(char *address);
+static void __bt_remove_mtu_gatt_device(char *address);
+static void __bt_add_mtu_gatt_device(char *address);
+static void __bt_update_mtu_gatt_device(char *address, int mtu);
 
 /* Linked List of GATT requests from Remote GATT Clients */
 static GSList *gatt_server_requests = NULL;
 
-/* Linked List of connected Remote GATT clients */
-static GSList *gatt_client_info_list = NULL;
-
 /* Number of clients to be notified to */
 static int num_indicate_clients;
 
@@ -279,11 +321,16 @@ static void __bt_handle_server_instance_registered(event_gatts_register_t *data)
 
 static void __bt_gatt_event_handler(int event_type, gpointer event_data);
 
+typedef enum {
+       BT_GATT_SERVER = 1,
+       BT_GATT_CLIENT,
+} bt_gatt_type_e;
+
 void _bt_check_adv_app_termination(const char *name)
 {
        bt_service_app_info_t *app = NULL;
        int k;
-       int apps[MAX_APPS_SUPPORTED];
+       int apps[MAX_APPS_SUPPORTED] = { 0, };
 
        ret_if(NULL == name);
 
@@ -293,32 +340,46 @@ void _bt_check_adv_app_termination(const char *name)
                app = &numapps[k];
 
                /* Search for a app which has same sender and stop adv is running */
-               if (!strncasecmp(app->sender, name, strlen(name)) && app->is_initialized == TRUE) {
-                       BT_DBG("Match found, name: %s", name);
-
-                       /* Unregister all service handles with stack */
-                       __bt_remove_all_service_handles(app->instance_id);
+               if (strcasecmp(app->sender, name) == 0 && app->is_initialized == TRUE) {
+                       BT_DBG("numapps[%d] Match found, name: %s", k, name);
 
-                       /* If Advertising is enabled, stop it */
-                       if (app->adv_handle > 0) {
-                               BT_INFO("Stop advertising on instance ID [%d]", app->instance_id);
-                               /* Disable adv if running */
-                               BT_INFO("Disable Advertising Adv Handle [%d] sender [%s]",
-                                               app->adv_handle, name);
-                               _bt_set_advertising(app->sender, app->adv_handle, FALSE, FALSE);
-                       }
+                       /* TODO 2: Need to manage app info as list, not array.
+                                  This loop always run for MAX count if any apps are terminated.
+                        */
 
                        /* Save instances of all apps that need to be unregistered */
-                       apps[app->instance_id] = 1;
+                       if (app->instance_id != -1) {
+                               /* GATT server */
+                               /* Unregister all service handles with stack */
+                               __bt_remove_all_service_handles(app);
+
+                               /* If Advertising is enabled, stop it */
+                               if (app->adv_handle != 0) {
+                                       BT_INFO("Stop advertising on instance ID [%d]", app->instance_id);
+                                       /* Disable adv if running */
+                                       BT_INFO("Disable Advertising Adv Handle [%d] sender [%s]",
+                                                       app->adv_handle, name);
+                                       _bt_set_advertising(app->sender, app->adv_handle, FALSE, FALSE);
+                               }
+
+                               apps[app->instance_id] = BT_GATT_SERVER;  /* App holds a GATT server Instance */
+                       } else if (app->client_id != -1) {
+                               /* GATT client */
+                               apps[app->client_id] = BT_GATT_CLIENT;    /* App holds a GATT client Instance */
+                       }
                }
        }
 
        /* Unregister all apps one by one */
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
-               if (apps[k] == 1) {
-                       BT_INFO("Unregister app[%d]", k);
+               if (apps[k] == BT_GATT_SERVER) {
+                       BT_INFO("Unregister server app[%d]", k);
                        /* Unregister server instance */
-                       __bt_do_unregister_server_instance(k);
+                       __bt_unregister_gatt_server_instance(k);
+               } else if (apps[k] == BT_GATT_CLIENT) {
+                       BT_INFO("Unregister client app[%d]", k);
+                       /* Unregister client instance */
+                       __bt_unregister_gatt_client_instance(k);
                }
        }
 }
@@ -409,6 +470,8 @@ static void __bt_register_default_gatt_client()
 
 int _bt_gatt_init(void)
 {
+       const char *stack_name = NULL;
+
        BT_DBG("+");
 
        if (OAL_STATUS_SUCCESS != gatt_enable()) {
@@ -418,15 +481,21 @@ int _bt_gatt_init(void)
 
        /* Register gatt event handler */
        _bt_service_register_event_handler_callback(BT_GATT_MODULE, __bt_gatt_event_handler);
-#ifdef TIZEN_GATT_CLIENT
-       /*In bluedroid product, defacult gatt client is handled differently*/
-       __bt_register_default_gatt_client();
-#endif
+
+       __bt_service_reset_gatt_data();
+
+       stack_name = oal_get_stack_name();
+
+       if (stack_name && g_strcmp0(stack_name, "bluez") == 0) {
+               /*In the platform, defacult gatt client should be registered */
+               __bt_register_default_gatt_client();
+       }
+
        BT_DBG("-");
        return BLUETOOTH_ERROR_NONE;
 }
 
-static void __bt_service_reset_gatt_data()
+static void __bt_service_reset_gatt_data(void)
 {
        int k;
 
@@ -444,6 +513,11 @@ static void __bt_service_reset_gatt_data()
                        memset(numapps[k].scan_rsp.data, 0x00, BLUETOOTH_ADVERTISING_DATA_LENGTH_MAX);
                        numapps[k].adv_data_len = 0;
                        numapps[k].scan_rsp_len = 0;
+
+                       /* GATT client */
+                       numapps[k].client_id = -1;
+                       memset(numapps[k].address.addr, 0x00, BLUETOOTH_ADDRESS_LENGTH);
+                       numapps[k].is_watcher_enabled = FALSE;
        }
 }
 
@@ -451,6 +525,9 @@ void _bt_gatt_deinit(void)
 {
        BT_INFO("GATT deinit");
 
+       /* Un-register the default gatt client before */
+       __bt_unregister_gatt_client_instance(gatt_default_client);
+
        if (OAL_STATUS_SUCCESS != gatt_disable())
                BT_ERR("gatt deinit failed");
 
@@ -468,6 +545,9 @@ void _bt_update_adv_handle(const char *sender, int adv_handle)
 
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
                info = &numapps[k];
+               /* Do not update client instance */
+               if (info->instance_id == -1)
+                       continue;
                /* Search for a app which has same sender and adv handle as 0 */
                if (!g_strcmp0(info->sender, sender) && info->adv_handle == 0)
                        info->adv_handle = adv_handle;
@@ -520,7 +600,7 @@ char * _bt_get_sender_and_handle(int server_instance, int *adv_handle)
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
                info = &numapps[k];
 
-               if (info->instance_id == server_instance && info->adv_handle != -1) {
+               if (info->instance_id == server_instance && info->adv_handle != 0) {
                        *adv_handle = info->adv_handle;
                        BT_DBG("Server instance [%d] Adv handle [%d] Sender [%s]", server_instance, *adv_handle, info->sender);
                        return g_strdup(info->sender);
@@ -532,7 +612,7 @@ char * _bt_get_sender_and_handle(int server_instance, int *adv_handle)
 void _bt_set_new_adv_data(bluetooth_advertising_data_t *adv, int len, int instance)
 {
        int k;
-       BT_DBG("+");
+       BT_DBG("");
        bt_service_app_info_t *info = NULL;
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
                info = &numapps[k];
@@ -542,13 +622,12 @@ void _bt_set_new_adv_data(bluetooth_advertising_data_t *adv, int len, int instan
                        break;
                }
        }
-       BT_DBG("-");
 }
 
 void _bt_set_new_scan_rsp_data(bluetooth_scan_resp_data_t *scan, int len, int instance)
 {
        int k;
-       BT_DBG("+");
+       BT_DBG("");
        bt_service_app_info_t *info = NULL;
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
                info = &numapps[k];
@@ -558,13 +637,11 @@ void _bt_set_new_scan_rsp_data(bluetooth_scan_resp_data_t *scan, int len, int in
                        break;
                }
        }
-       BT_DBG("-");
 }
 
 void _bt_get_previous_adv_data(bluetooth_advertising_data_t *adv, int *len, int instance)
 {
        int k;
-       BT_DBG("+");
        bt_service_app_info_t *info = NULL;
 
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
@@ -581,7 +658,7 @@ void _bt_get_previous_adv_data(bluetooth_advertising_data_t *adv, int *len, int
 void _bt_get_previous_scan_rsp_data(bluetooth_scan_resp_data_t *scan, int *len, int instance)
 {
        int k;
-       BT_DBG("+");
+       BT_DBG("");
        bt_service_app_info_t *info = NULL;
 
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
@@ -595,37 +672,16 @@ void _bt_get_previous_scan_rsp_data(bluetooth_scan_resp_data_t *scan, int *len,
        }
 }
 
-#ifdef TIZEN_GATT_CLIENT
-static int __bt_do_unregister_gatt_instance(int instance_id)
+static int __bt_unregister_gatt_client_instance(int client_if)
 {
        int ret = OAL_STATUS_SUCCESS;
        int k;
 
-       BT_INFO("DeAllocate server or client instance ID [%d]", instance_id);
+       BT_INFO("DeAllocate client instance ID [%d]", client_if);
 
        /* Reset data: instance_id parameter could be either for GATT Server or for GATT client  */
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
-               if (numapps[k].instance_id == instance_id) {
-                       BT_INFO("This is a GATT server app, unregister: Slot [%d] vacant", k);
-                       numapps[k].is_initialized = FALSE;
-                       numapps[k].instance_id = -1;
-                       numapps[k].adv_handle = 0;
-                       numapps[k].adv_instance = -1;
-                       memset(numapps[k].sender, 0x00, sizeof(numapps[k].sender));
-                       memset(numapps[k].uuid, 0x00, sizeof(numapps[k].uuid));
-                       memset(numapps[k].adv_data.data, 0x00, BLUETOOTH_ADVERTISING_DATA_LENGTH_MAX);
-                       memset(numapps[k].scan_rsp.data, 0x00, BLUETOOTH_ADVERTISING_DATA_LENGTH_MAX);
-                       numapps[k].adv_data_len = 0;
-                       numapps[k].scan_rsp_len = 0;
-
-                       /* Its a GATT Server Instance */
-                       ret = gatts_unregister(instance_id);
-                       if (ret != OAL_STATUS_SUCCESS) {
-                               BT_ERR("DeAllocate server instance with stack Fail ret: %d", ret);
-                               return BLUETOOTH_ERROR_INTERNAL;
-                       }
-                       break;
-               } else if (numapps[k].client_id == instance_id) {
+               if (numapps[k].client_id == client_if) {
                        BT_INFO("This is a GATT client app, unregister: Slot [%d] vacant", k);
                        numapps[k].client_id = -1;
                        numapps[k].is_initialized = FALSE;
@@ -634,7 +690,7 @@ static int __bt_do_unregister_gatt_instance(int instance_id)
                        memset(&numapps[k].address.addr, 0x00, sizeof(bluetooth_device_address_t));
 
                        /* Its a GATT Client Instance */
-                       ret = gattc_deregister(instance_id);
+                       ret = gattc_deregister(client_if);
                        if (ret != OAL_STATUS_SUCCESS) {
                                BT_ERR("DeAllocate GATT Client instance with stack Fail ret: %d", ret);
                                return BLUETOOTH_ERROR_INTERNAL;
@@ -644,9 +700,8 @@ static int __bt_do_unregister_gatt_instance(int instance_id)
        }
        return BLUETOOTH_ERROR_NONE;
 }
-#endif
 
-static int __bt_do_unregister_server_instance(int server_instance)
+static int __bt_unregister_gatt_server_instance(int server_instance)
 {
        int ret = OAL_STATUS_SUCCESS;
        int k;
@@ -679,34 +734,37 @@ static int __bt_do_unregister_server_instance(int server_instance)
        return BLUETOOTH_ERROR_NONE;
 }
 
-static void __bt_remove_all_service_handles(int instance_id)
+static void __bt_remove_all_service_handles(bt_service_app_info_t *app_info)
 {
        GSList *l;
        int *handle = NULL;
        int ret = OAL_STATUS_SUCCESS;
        int count;
 
-       count = g_slist_length(numapps[instance_id].service_handles);
+       if (app_info == NULL)
+               return;
+
+       count = g_slist_length(app_info->service_handles);
        BT_INFO("Before handle removal: current count [%d]", count);
 
-       for (l = numapps[instance_id].service_handles; l != NULL;) {
+       for (l = app_info->service_handles; l != NULL;) {
                handle = l->data;
                l = g_slist_next(l);
 
                if (handle) {
-                       BT_INFO("Server Handle to be Removed [%d] Instance ID [%d]", *handle, instance_id);
-                       if (_bt_gatt_server_stop_service(numapps[instance_id].sender, *handle, instance_id) != BLUETOOTH_ERROR_NONE)
+                       BT_INFO("Server Handle to be Removed [%d] Instance ID [%d]", *handle, app_info->instance_id);
+                       if (_bt_gatt_server_stop_service(app_info->sender, *handle, app_info->instance_id) != BLUETOOTH_ERROR_NONE)
                                continue;
 
-                       ret = gatts_delete_service(instance_id, *handle);
+                       ret = gatts_delete_service(app_info->instance_id, *handle);
                        if (ret != OAL_STATUS_SUCCESS) {
                                BT_ERR("ret: %d", ret);
                                continue;
                        } else {
-                               numapps[instance_id].service_handles = g_slist_remove(numapps[instance_id].service_handles, handle);
+                               app_info->service_handles = g_slist_remove(app_info->service_handles, handle);
                                g_free(handle);
                                handle = NULL;
-                               count = g_slist_length(numapps[instance_id].service_handles);
+                               count = g_slist_length(app_info->service_handles);
                                BT_INFO("After deleting current count [%d]", count);
                        }
                }
@@ -735,7 +793,7 @@ int _bt_unregister_server_instance(const char *sender, int adv_handle)
                        if (!g_strcmp0(info->sender, sender)) {
                                BT_INFO("Unregister GATT server instance [%d]", info->instance_id);
                                /* Unregister all service handles with stack */
-                               __bt_remove_all_service_handles(info->instance_id);
+                               __bt_remove_all_service_handles(info);
 
                                /* Disable adv if running */
                                BT_INFO("Disable Advertising Adv Handle [%d] sender [%s]",
@@ -757,7 +815,7 @@ int _bt_unregister_server_instance(const char *sender, int adv_handle)
                if (!numapps[server_instance].service_handles) {
                        BT_INFO("There are no Service handles with this app, safe to unregister");
                        /* Unregister server instance only if this sender does not have any gatt services in it */
-                       result = __bt_do_unregister_server_instance(server_instance);
+                       result = __bt_unregister_gatt_server_instance(server_instance);
                } else {
                        numapps[server_instance].adv_handle = 0;
                        memset(numapps[server_instance].adv_data.data, 0x00, BLUETOOTH_ADVERTISING_DATA_LENGTH_MAX);
@@ -773,7 +831,7 @@ int _bt_unregister_server_instance(const char *sender, int adv_handle)
                if (apps[k] == 1) {
                        BT_INFO("Unregister app[%d]", k);
                        /* Unregister server instance */
-                       __bt_do_unregister_server_instance(k);
+                       __bt_unregister_gatt_server_instance(k);
                }
        }
 
@@ -788,13 +846,13 @@ int _bt_register_server_instance(const char *sender, int adv_handle)
        int k;
        oal_uuid_t uuid;
 
-       BT_INFO("###Check on which instance Server instance can be initialized....");
+       BT_INFO("Check on which instance Server instance can be initialized....");
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
                if (numapps[k].is_initialized == 1) {
-                       BT_INFO("Instance ID [%d] is already in use..Check next slot", numapps[k].instance_id);
+                       BT_DBG("Instance ID [%d] is already in use..Check next slot", numapps[k].instance_id);
                } else {
                        slot = k;
-                       BT_INFO("Time to register GATT Server..UUID to be used is [%s] slot [%d]", uuid_list[slot-1], slot);
+                       BT_DBG("Time to register GATT Server..UUID to be used is [%s] slot [%d]", uuid_list[slot-1], slot);
                        break;
                }
        }
@@ -816,7 +874,7 @@ int _bt_register_server_instance(const char *sender, int adv_handle)
                g_free(uuid_string);
                return BLUETOOTH_ERROR_INTERNAL;
        }
-       BT_INFO("GATT Server registration call successfully accepted by OAL..wait for Instance Initialized event from OAL..");
+       BT_DBG("GATT Server registration call successfully accepted by OAL..wait for Instance Initialized event from OAL..");
        /* Return & wait for GATT Server Instance Initialization event */
        memset(numapps[slot].sender, 0x00, sizeof(numapps[slot].sender));
        memset(numapps[slot].uuid, 0x00, sizeof(numapps[slot].uuid));
@@ -839,10 +897,10 @@ static void __bt_gatt_handle_pending_request_info(int result,
        GArray *out_param;
        invocation_info_t *req_info = NULL;
        ret_if(data == NULL);
-       BT_DBG("+");
 
-       for (l = _bt_get_invocation_list(); l != NULL; l = g_slist_next(l)) {
+       for (l = _bt_get_invocation_list(); l != NULL; ) {
                req_info = l->data;
+               l = g_slist_next(l);
                if (req_info == NULL || req_info->service_function != service_function)
                        continue;
 
@@ -850,7 +908,7 @@ static void __bt_gatt_handle_pending_request_info(int result,
 #ifndef GATT_DIRECT
                case BT_GATT_SERVER_REGISTER: {
                        bt_service_app_info_t *param = (bt_service_app_info_t*)data;
-                       BT_INFO("Sender [%s] Request Sender [%s]", param->sender, req_info->sender);
+
                        if (!g_strcmp0(req_info->sender, param->sender)) {
                                BT_DBG("GATT Server app found [%s]", req_info->sender);
 
@@ -867,7 +925,6 @@ static void __bt_gatt_handle_pending_request_info(int result,
                case BT_GATT_SERVER_START_SERVICE:
                case BT_GATT_SERVER_DELETE_SERVICE: {
                        bt_service_app_info_t *param = (bt_service_app_info_t*)data;
-                       BT_INFO("Sender [%s] Request Sender [%s]", param->sender, req_info->sender);
 
                        int *saved_instance_id = (int*)req_info->user_data;
                        if (!g_strcmp0(req_info->sender, param->sender) && param->instance_id == *saved_instance_id) {
@@ -888,7 +945,7 @@ static void __bt_gatt_handle_pending_request_info(int result,
                case BT_GATT_SERVER_ADD_DESCRIPTOR:
                case BT_GATT_SERVER_ADD_CHARACTERISTIC: {
                        int *handle = (int*)data;
-                       BT_INFO("Characteristic added: Handle [%d]", *handle);
+                       BT_DBG("Characteristic added: Handle [%d]", *handle);
                        out_param = g_array_new(FALSE, FALSE, sizeof(gchar));
 
                        g_array_append_vals(out_param, handle, sizeof(int));
@@ -937,7 +994,7 @@ static void __bt_gatt_handle_pending_request_info(int result,
 #ifdef TIZEN_GATT_CLIENT
                case BT_GATT_CLIENT_REGISTER: {
                        bt_service_app_info_t *param = (bt_service_app_info_t*)data;
-                       BT_INFO("Sender [%s] Request Sender [%s]", param->sender, req_info->sender);
+
                        if (!g_strcmp0(req_info->sender, param->sender)) {
                                BT_DBG("GATT Client app found [%s] created client ID [%d]",
                                                req_info->sender, param->client_id);
@@ -958,8 +1015,6 @@ static void __bt_gatt_handle_pending_request_info(int result,
                        _bt_convert_addr_type_to_string(address,
                                        (unsigned char *)(&param->device_addr.addr));
 
-                       BT_INFO("Request Sender [%s] address [%s]", req_info->sender, address);
-
                        /* Match address to determine same request */
                        if (!g_strcmp0((char*)req_info->user_data, address)) {
                                BT_DBG("GATT Client app found [%s] Remote address [%s]",
@@ -983,7 +1038,7 @@ static void __bt_gatt_handle_pending_request_info(int result,
                        bt_char_browse_info_t param;
                        memcpy((void*)&param, data, sizeof(bt_char_browse_info_t));
                        //bt_char_browse_info_t *param = (bt_char_browse_info_t*)data;
-                       BT_INFO("Request Sender [%s]", req_info->sender);
+
                        bluetooth_gatt_client_svc_prop_info_t *prop = (bluetooth_gatt_client_svc_prop_info_t*)req_info->user_data;
 
                        /* Match both address and service properties to determine same request */
@@ -992,7 +1047,7 @@ static void __bt_gatt_handle_pending_request_info(int result,
                                        sizeof(bluetooth_device_address_t)) &&
                                        !memcmp(param.svc_uuid, prop->svc.uuid, BLUETOOTH_UUID_HEX_MAX_LEN) &&
                                        param.svc_inst_id == prop->svc.instance_id) {
-                               BT_INFO("Returning Service properties");
+                               BT_DBG("Returning Service properties");
 
                                out_param = g_array_new(FALSE, FALSE, sizeof(gchar));
                                g_array_append_vals(out_param, &param, sizeof(bt_char_browse_info_t));
@@ -1007,7 +1062,6 @@ static void __bt_gatt_handle_pending_request_info(int result,
                case BT_GATT_GET_CHARACTERISTIC_PROPERTIES: {
                        bt_descriptor_browse_info_t *param = (bt_descriptor_browse_info_t*)data;
 
-                       BT_INFO("Request Sender [%s]", req_info->sender);
                        bluetooth_gatt_client_char_prop_info_t *prop = (bluetooth_gatt_client_char_prop_info_t*)req_info->user_data;
 
                        /* Match both address, service properties &char properties to determine same request */
@@ -1018,7 +1072,7 @@ static void __bt_gatt_handle_pending_request_info(int result,
                                        param->svc_inst_id == prop->svc.instance_id &&
                                        !memcmp(param->char_uuid, prop->characteristic.uuid, BLUETOOTH_UUID_HEX_MAX_LEN) &&
                                        param->char_inst_id == prop->characteristic.instance_id) {
-                               BT_INFO("Returning Characteristic properties");
+                               BT_DBG("Returning Characteristic properties");
                                out_param = g_array_new(FALSE, FALSE, sizeof(gchar));
                                                g_array_append_vals(out_param, param, sizeof(bt_descriptor_browse_info_t));
                                _bt_service_method_return(req_info->context, out_param, result);
@@ -1032,7 +1086,7 @@ static void __bt_gatt_handle_pending_request_info(int result,
                case BT_GATT_WATCH_CHARACTERISTIC: {
                        bt_gatt_notif_reg_info_t *param = (bt_gatt_notif_reg_info_t*)data;
                        bluetooth_gatt_client_char_prop_info_t *prop = (bluetooth_gatt_client_char_prop_info_t*)req_info->user_data;
-                       BT_INFO("Request Sender [%s]", req_info->sender);
+
                        /* Match both address, service properties &char properties to determine same request */
                        if (!memcmp(param->addr.addr,
                                        prop->device_address.addr,
@@ -1055,14 +1109,13 @@ static void __bt_gatt_handle_pending_request_info(int result,
                case BT_GATT_READ_CHARACTERISTIC:
                case BT_GATT_WRITE_CHARACTERISTIC_VALUE_BY_TYPE: {
                         bluetooth_gatt_client_char_prop_info_t *param = (bluetooth_gatt_client_char_prop_info_t*)data;
-                        BT_INFO("Request Sender [%s]", req_info->sender);
 
                         char *addr = g_malloc0(sizeof(char) * BT_ADDRESS_STRING_SIZE);
                         bluetooth_gatt_client_char_prop_info_t *prop = (bluetooth_gatt_client_char_prop_info_t*)req_info->user_data;
                         _bt_convert_addr_type_to_string(addr, prop->device_address.addr);
 
                         if (!memcmp(param, prop, sizeof(bluetooth_gatt_client_char_prop_info_t))) {
-                                BT_INFO("Gatt Char read or write request matched for address [%s]", addr);
+                                BT_DBG("Gatt Char read or write request matched for address [%s]", addr);
                                 out_param = g_array_new(FALSE, FALSE, sizeof(gchar));
                                 g_array_append_vals(out_param, param, sizeof(bluetooth_gatt_client_char_prop_info_t));
                                 _bt_service_method_return(req_info->context, out_param, result);
@@ -1077,14 +1130,13 @@ static void __bt_gatt_handle_pending_request_info(int result,
                case BT_GATT_READ_DESCRIPTOR_VALUE:
                case BT_GATT_WRITE_DESCRIPTOR_VALUE: {
                         bluetooth_gatt_client_desc_prop_info_t *param = (bluetooth_gatt_client_desc_prop_info_t*)data;
-                        BT_INFO("Request Sender [%s]", req_info->sender);
 
                         char *addr = g_malloc0(sizeof(char) * BT_ADDRESS_STRING_SIZE);
                         bluetooth_gatt_client_desc_prop_info_t *prop = (bluetooth_gatt_client_desc_prop_info_t*)req_info->user_data;
                         _bt_convert_addr_type_to_string(addr, prop->device_address.addr);
 
                         if (!memcmp(param, prop, sizeof(bluetooth_gatt_client_desc_prop_info_t))) {
-                                BT_INFO("Descriptor read or write request matched for address [%s]", addr);
+                                BT_DBG("Descriptor read or write request matched for address [%s]", addr);
                                 out_param = g_array_new(FALSE, FALSE, sizeof(gchar));
                                 g_array_append_vals(out_param, param, sizeof(bluetooth_gatt_client_desc_prop_info_t));
                                 _bt_service_method_return(req_info->context, out_param, result);
@@ -1096,12 +1148,30 @@ static void __bt_gatt_handle_pending_request_info(int result,
                        g_free(addr);
                        break;
                }
+               case BT_REQ_ATT_MTU: {
+                       char *addr = (char*)req_info->user_data;
+                       bluetooth_device_address_t address;
+
+                       if (!g_strcmp0(addr, (char*)data)) {
+                               BT_DBG("GATT Client BT_REQ_ATT_MTU call pending for app [%s] addr [%s]",
+                                               req_info->sender, addr);
+                               out_param = g_array_new(FALSE, FALSE, sizeof(gchar));
+                               _bt_convert_addr_string_to_type(address.addr, addr);
+
+                               g_array_append_vals(out_param, (bluetooth_device_address_t*)&address,
+                                               sizeof(bluetooth_device_address_t));
+                               _bt_service_method_return(req_info->context, out_param, result);
+
+                               g_free(req_info->user_data);
+                               _bt_free_info_from_invocation_list(req_info);
+                               g_array_free(out_param, TRUE);
+                       }
+               }
 #endif
                default:
                        break;
                }
        }
-       BT_DBG("-");
 }
 
 static void __bt_handle_server_instance_registered(event_gatts_register_t *data)
@@ -1128,7 +1198,6 @@ static void __bt_handle_server_instance_registered(event_gatts_register_t *data)
                }
        }
        g_free(uuid_string);
-       g_free(data);
 }
 
 static void __bt_handle_gatt_server_service_added(event_gatts_srvc_prm_t *event)
@@ -1160,7 +1229,7 @@ static void __bt_handle_gatt_server_service_added(event_gatts_srvc_prm_t *event)
                info = &numapps[k];
 
                if (info->instance_id == event->gatt_srvc_stat.server_inst) {
-                       BT_INFO("Found GATT Server.. UUID [%s], sender [%s]", info->uuid, info->sender);
+                       BT_INFO("numapps[%d] Found GATT Server.. UUID [%s], sender [%s]", k, info->uuid, info->sender);
                        __bt_gatt_handle_pending_request_info(result, BT_GATT_SERVER_ADD_SERVICE,
                                        (int*)&svc_handle, sizeof(int));
 
@@ -1168,15 +1237,14 @@ static void __bt_handle_gatt_server_service_added(event_gatts_srvc_prm_t *event)
                        if (svc_handle > 0) {
                                handle = g_malloc0(sizeof(int));
                                *handle = svc_handle;
-                               numapps[event->gatt_srvc_stat.server_inst].service_handles = g_slist_append(numapps[event->gatt_srvc_stat.server_inst].service_handles, handle);
-                               count = g_slist_length(numapps[event->gatt_srvc_stat.server_inst].service_handles);
+                               numapps[k].service_handles = g_slist_append(numapps[k].service_handles, handle);
+                               count = g_slist_length(numapps[k].service_handles);
                                BT_INFO("Added Service handle [%d] to list..current count [%d]", svc_handle, count);
                        }
                        break;
                }
        }
 
-       g_free(event);
        g_free(uuid_str);
 }
 
@@ -1218,7 +1286,6 @@ static void __bt_handle_gatt_server_characteristic_added(event_gatts_srvc_charct
        _bt_uuid_to_string(&(event->charctr_uuid), uuid_str);
        BT_INFO("GATT Added Characteristic:  UUID: [%s]", uuid_str);
 
-       g_free(event);
        g_free(uuid_str);
 }
 
@@ -1258,7 +1325,6 @@ static void __bt_handle_gatt_server_descriptor_added(event_gatts_srvc_descr_t* e
        _bt_uuid_to_string(&(event->descrptr_uuid), uuid_str);
        BT_INFO("GATT Added Descriptor:  UUID: [%s]", uuid_str);
 
-       g_free(event);
        g_free(uuid_str);
 }
 
@@ -1290,8 +1356,6 @@ static void __bt_handle_gatt_server_service_started(event_gatts_srvc_t *event)
                        break;
                }
        }
-
-       g_free(event);
 }
 
 static void __bt_handle_gatt_server_service_stopped(event_gatts_srvc_t *event)
@@ -1321,8 +1385,6 @@ static void __bt_handle_gatt_server_service_stopped(event_gatts_srvc_t *event)
                        break;
                }
        }
-
-       g_free(event);
 }
 
 static void __bt_handle_gatt_server_service_deleted(event_gatts_srvc_t *event)
@@ -1352,11 +1414,9 @@ static void __bt_handle_gatt_server_service_deleted(event_gatts_srvc_t *event)
                        break;
                }
        }
-
-       g_free(event);
 }
 
-static struct gatt_client_info_t *__bt_find_remote_gatt_client_info(char *address)
+struct gatt_client_info_t *_bt_find_remote_gatt_client_info(char *address)
 {
        GSList *l;
        struct gatt_client_info_t *info = NULL;
@@ -1366,7 +1426,7 @@ static struct gatt_client_info_t *__bt_find_remote_gatt_client_info(char *addres
                        continue;
 
                if (!g_strcmp0(info->addr, address)) {
-                       BT_INFO("Remote GATT client found addr[%s]", info->addr);
+                       BT_DBG("Remote GATT client found addr[%s]", info->addr);
                        return info;
                }
        }
@@ -1392,7 +1452,7 @@ static struct gatt_client_info_t *__bt_find_remote_gatt_client_info_from_conn_id
 }
 
 #ifdef TIZEN_GATT_CLIENT
-static struct gatt_server_info_t *__bt_find_remote_gatt_server_info(char *address)
+struct gatt_server_info_t *_bt_find_remote_gatt_server_info(char *address)
 {
        GSList *l;
        struct gatt_server_info_t *info = NULL;
@@ -1402,7 +1462,7 @@ static struct gatt_server_info_t *__bt_find_remote_gatt_server_info(char *addres
                        continue;
 
                if (!g_strcmp0(info->addr, address)) {
-                       BT_INFO("Remote GATT Server found addr[%s]", info->addr);
+                       BT_DBG("Remote GATT Server found addr[%s]", info->addr);
                        return info;
                }
        }
@@ -1425,35 +1485,19 @@ static struct gatt_out_conn_info_t* __bt_find_gatt_outgoing_conn_info(char *addr
        }
        return NULL;
 }
-
-static struct gatt_server_info_t *__bt_find_remote_gatt_server_info_from_client_if(int client_if)
-{
-       GSList *l;
-       struct gatt_server_info_t *info = NULL;
-
-       for (l = gatt_server_info_list; l != NULL; l = g_slist_next(l)) {
-               info = (struct gatt_server_info_t*)l->data;
-               if (info == NULL)
-                       continue;
-
-               if (info->client_id == client_if) {
-                       BT_INFO("Remote GATT server found addr[%s]", info->addr);
-                       return info;
-               }
-       }
-       return NULL;
-}
 #endif
 
-
-
-
 #ifdef TIZEN_GATT_CLIENT
 static void __bt_handle_gatt_server_connection_state(event_gatts_conn_t *event)
 {
        int result = BLUETOOTH_ERROR_NONE;
-       struct gatt_client_info_t *conn_info = NULL;
+       struct gatt_client_info_t *client_info = NULL;
+#ifndef __INTEGRATE_GATT_INFO__
+       struct gatt_server_info_t *server_info = NULL;
+#endif
        bluetooth_device_address_t dev_addr;
+       GVariant *param = NULL;
+       int ret;
 
        char *address = g_malloc0(BT_ADDRESS_STRING_SIZE);
 
@@ -1463,6 +1507,10 @@ static void __bt_handle_gatt_server_connection_state(event_gatts_conn_t *event)
           in this event */
        _bt_convert_addr_type_to_string(address,
                        (unsigned char *)dev_addr.addr);
+
+       if (event->status != OAL_STATUS_SUCCESS)
+               result = BLUETOOTH_ERROR_INTERNAL;
+
        __bt_gatt_handle_pending_request_info(result, BT_CONNECT_LE,
                        address, BT_ADDRESS_STRING_SIZE);
 
@@ -1471,28 +1519,49 @@ static void __bt_handle_gatt_server_connection_state(event_gatts_conn_t *event)
 
 
        /* Check if device is already in connected list */
-       conn_info = __bt_find_remote_gatt_client_info(address);
+       client_info = _bt_find_remote_gatt_client_info(address);
 
-       if (!conn_info) {
+       if (!client_info) {
                BT_INFO("Conn Info absent: But no need to Send Local GATT Server Connected event to apps");
-#if 0
+
                param = g_variant_new("(is)", result, address);
 
                /* Send event to application */
                _bt_send_event(BT_DEVICE_EVENT,
                                BLUETOOTH_EVENT_GATT_SERVER_CONNECTED, /* Local device is GATT server */
                                param);
+
+               /* Save client connection info */
+               client_info = g_new0(struct gatt_client_info_t, 1);
+               client_info->addr = g_strdup(address);
+               BT_INFO("Added GATT client addr[%s]", client_info->addr);
+               client_info->connection_id = event->conn_id;
+#ifdef __INTEGRATE_GATT_INFO__
+               client_info->client_id = -1;
 #endif
-               /* Save Connection info */
-               conn_info = g_new0(struct gatt_client_info_t, 1);
-               conn_info->addr = g_strdup(address);
-               BT_INFO("Added GATT client addr[%s]", conn_info->addr);
-               conn_info->connection_id = event->conn_id;
-               conn_info->instance_id = event->server_inst;
-               gatt_client_info_list = g_slist_append(gatt_client_info_list, conn_info);
+               client_info->instance_id = event->server_inst;
+               gatt_client_info_list = g_slist_append(gatt_client_info_list, client_info);
                BT_INFO("Total num of connected Remote GATT Clients [%d]", g_slist_length(gatt_client_info_list));
+
+#ifndef __INTEGRATE_GATT_INFO__
+               /* Save server connection info */
+               server_info = g_new0(struct gatt_server_info_t, 1);
+               server_info->addr = g_strdup(address);
+               server_info->client_id = -1;
+               BT_INFO("Added GATT server addr[%s]", server_info->addr);
+               server_info->connection_id = event->conn_id;
+               gatt_server_info_list = g_slist_append(gatt_server_info_list, server_info);
+               BT_INFO("Total num of connected Remote GATT Servers [%d]", g_slist_length(gatt_server_info_list));
+#endif
+
+               ret = gattc_add_connection_info((bt_address_t *)&dev_addr, event->conn_id, event->server_inst);
+               if (ret != OAL_STATUS_SUCCESS) {
+                       BT_ERR("gattc register server instance failed");
+               }
        }
 
+       __bt_add_mtu_gatt_device(address);
+
        g_free(address);
 }
 
@@ -1500,10 +1569,13 @@ static void __bt_handle_gatt_server_connection_state(event_gatts_conn_t *event)
 static void __bt_handle_gatt_server_disconnection_state(event_gatts_conn_t *event)
 {
        int result = BLUETOOTH_ERROR_NONE;
-       struct gatt_client_info_t *conn_info = NULL;
+       struct gatt_client_info_t *client_info = NULL;
+#ifndef __INTEGRATE_GATT_INFO__
+       struct gatt_server_info_t *server_info = NULL;
+#endif
        bluetooth_device_address_t dev_addr;
-
-       char *address = g_malloc0(BT_ADDRESS_STRING_SIZE);
+       GVariant *param = NULL;
+       char address[BT_ADDRESS_STRING_SIZE];
 
        memcpy(dev_addr.addr, event->address.addr, 6);
 
@@ -1512,6 +1584,9 @@ static void __bt_handle_gatt_server_disconnection_state(event_gatts_conn_t *even
        _bt_convert_addr_type_to_string(address,
                        (unsigned char *)dev_addr.addr);
 
+       if (event->status != OAL_STATUS_SUCCESS)
+               result = BLUETOOTH_ERROR_INTERNAL;
+
        if (NULL ==  _bt_get_request_info_data(BT_DISCONNECT_LE, address)) {
                if (NULL !=  _bt_get_request_info_data(BT_CONNECT_LE, address)) {
                        result = BLUETOOTH_ERROR_INTERNAL;
@@ -1530,24 +1605,39 @@ static void __bt_handle_gatt_server_disconnection_state(event_gatts_conn_t *even
        BT_INFO("Local GATT Server DisConnected: Remote Client addr[%s] Server Instance [%d] Connection ID [%d]",
                        address, event->server_inst, event->conn_id);
        /* Remove Connection info */
-       conn_info = __bt_find_remote_gatt_client_info(address);
-       if (conn_info) {
+       client_info = _bt_find_remote_gatt_client_info(address);
+       if (client_info) {
                BT_INFO("No need to Send Local GATT Server Disconnected event to apps, just remove remote client info");
-#if 0
+
                param = g_variant_new("(is)", result, address);
                /* Send event to application */
                _bt_send_event(BT_DEVICE_EVENT,
                                BLUETOOTH_EVENT_GATT_SERVER_DISCONNECTED, /* Local device is GATT server */
                                param);
+
+#ifndef __INTEGRATE_GATT_INFO__
+               /* Remove server info from list */
+               server_info = _bt_find_remote_gatt_server_info(address);
+               if (server_info)
+                       gatt_server_info_list = g_slist_remove(gatt_server_info_list, server_info);
+               else
+                       BT_INFO("Can not find conn info, already removed!");
+
+               /* Remove all services from info list_gatt_info */
+               __bt_cleanup_remote_services(server_info);
+#else
+               /* Remove all services from info list_gatt_info */
+               __bt_cleanup_remote_services(client_info);
 #endif
-               /* Remove info from List */
-               gatt_client_info_list = g_slist_remove(gatt_client_info_list, conn_info);
+
+               /* Remove client info from List */
+               gatt_client_info_list = g_slist_remove(gatt_client_info_list, client_info);
                BT_INFO("Total num of connected GATT clients [%d]", g_slist_length(gatt_client_info_list));
-               g_free(conn_info->addr);
-               g_free(conn_info);
+               g_free(client_info->addr);
+               g_free(client_info);
        }
 
-       g_free(address);
+       __bt_remove_mtu_gatt_device(address);
 }
 #else
 
@@ -1587,7 +1677,7 @@ static void __bt_handle_gatt_server_connection_state(event_gatts_conn_t *event)
 
 
        /* Check if device is already in connected list */
-       conn_info = __bt_find_remote_gatt_client_info(address);
+       conn_info = _bt_find_remote_gatt_client_info(address);
 
        if (!conn_info) {
                param = g_variant_new("(is)", result, address);
@@ -1650,7 +1740,7 @@ static void __bt_handle_gatt_server_disconnection_state(event_gatts_conn_t *even
                        param);
 
        /* Remove Connection info */
-       conn_info = __bt_find_remote_gatt_client_info(address);
+       conn_info = _bt_find_remote_gatt_client_info(address);
        if (conn_info) {
                BT_INFO("Remove GATT client info from List..");
                /* Remove info from List */
@@ -1664,6 +1754,84 @@ static void __bt_handle_gatt_server_disconnection_state(event_gatts_conn_t *even
 }
 #endif
 
+
+static void __bt_handle_gatt_server_acquire_write_requested(event_gatts_srvc_acquire_attr_t *event)
+{
+       GVariant *param = NULL;
+       int result = BLUETOOTH_ERROR_NONE;
+       struct gatt_server_req_info *req_info = NULL;
+       bluetooth_device_address_t dev_addr;
+       char address[BT_ADDRESS_STRING_SIZE] = { 0 };
+
+       BT_INFO("GATT Server ACQUIRE  Write Req Connection ID: [%d]", event->attr_trans.conn_id);
+       BT_INFO("GATT Server  ACQUIRE Write Req Transaction ID:[%d]", event->attr_trans.trans_id);
+       BT_INFO("GATT Server ACQUIRE Write Req Attribute Handle: [%d]", event->attr_trans.attr_handle);
+
+       //address = g_malloc0(BT_ADDRESS_STRING_SIZE);
+       memcpy(dev_addr.addr, event->address.addr, 6);
+
+       req_info = g_new0(struct gatt_server_req_info, 1);
+       req_info->request_id = event->attr_trans.trans_id;
+       req_info->attribute_handle = event->attr_trans.attr_handle;
+       req_info->connection_id = event->attr_trans.conn_id;
+       req_info->request_type = BLUETOOTH_GATT_REQUEST_TYPE_ACQUIRE_WRITE;
+       gatt_server_requests = g_slist_append(gatt_server_requests, req_info);
+
+       _bt_convert_addr_type_to_string(address,
+                       (unsigned char *)dev_addr.addr);
+
+       param = g_variant_new("(iiiiiis)", result,
+                       event->attr_trans.conn_id,
+                       event->attr_trans.trans_id,
+                       event->attr_trans.attr_handle,
+                       event->mtu, event->attr_trans.offset, address);
+       BT_INFO("GATT Server ACQUIRE Write Req Attribute remote address : [%s]", address);
+
+       _bt_send_event(BT_GATT_SERVER_EVENT,
+                       BLUETOOTH_EVENT_GATT_SERVER_ACQUIRE_WRITE,
+                       param);
+
+}
+
+static void __bt_handle_gatt_server_acquire_notify_requested(event_gatts_srvc_acquire_attr_t *event)
+{
+       GVariant *param = NULL;
+       int result = BLUETOOTH_ERROR_NONE;
+       struct gatt_server_req_info *req_info = NULL;
+       bluetooth_device_address_t dev_addr;
+       char address[BT_ADDRESS_STRING_SIZE] = { 0 };
+
+       BT_INFO("GATT Server ACQUIRE  Notify Req Connection ID: [%d]", event->attr_trans.conn_id);
+       BT_INFO("GATT Server ACQUIRE Notify  Req Transaction ID:[%d]", event->attr_trans.trans_id);
+       BT_INFO("GATT Server ACQUIRE Notify Req Attribute Handle: [%d]", event->attr_trans.attr_handle);
+       BT_INFO("GATT Server ACQUIRE notify Req address : [%s]", address);
+
+       memcpy(dev_addr.addr, event->address.addr, 6);
+       _bt_convert_addr_type_to_string(address,
+                       (unsigned char *)dev_addr.addr);
+       BT_INFO("GATT Server ACQUIRE notify Req remote address : [%s]", address);
+
+       req_info = g_new0(struct gatt_server_req_info, 1);
+       req_info->request_id = event->attr_trans.trans_id;
+       req_info->attribute_handle = event->attr_trans.attr_handle;
+       req_info->connection_id = event->attr_trans.conn_id;
+       req_info->request_type = BLUETOOTH_GATT_REQUEST_TYPE_ACQUIRE_NOTIFY;
+       gatt_server_requests = g_slist_append(gatt_server_requests, req_info);
+
+       param = g_variant_new("(iiiiiis)", result,
+                       event->attr_trans.conn_id,
+                       event->attr_trans.trans_id,
+                       event->attr_trans.attr_handle,
+                       event->mtu, event->attr_trans.offset,
+                       address);
+
+       BT_INFO("GATT Server ACQUIRE Notify  Req Attribute : ");
+
+        _bt_send_event(BT_GATT_SERVER_EVENT,
+                                BLUETOOTH_EVENT_GATT_SERVER_ACQUIRE_NOTIFY,
+                                param);
+}
+
 static void __bt_handle_gatt_server_write_requested(event_gatts_srvc_write_attr_t *event)
 {
        char *address;
@@ -1690,7 +1858,6 @@ static void __bt_handle_gatt_server_write_requested(event_gatts_srvc_write_attr_
 
        if (event->length <= 0) {
                BT_INFO("GATT Server write requested, but length of attr value is 0");
-               g_free(event);
                return;
        }
 
@@ -1741,7 +1908,6 @@ static void __bt_handle_gatt_server_write_requested(event_gatts_srvc_write_attr_
                         BLUETOOTH_EVENT_GATT_SERVER_VALUE_CHANGED,
                        param);
 
-       g_free(event);
        g_free(write_val);
 }
 
@@ -1792,8 +1958,6 @@ static void __bt_handle_gatt_server_read_requested(event_gatts_srvc_read_attr_t
        _bt_send_event(BT_GATT_SERVER_EVENT,
                        BLUETOOTH_EVENT_GATT_SERVER_READ_REQUESTED,
                        param);
-
-       g_free(event);
 }
 
 static void __bt_handle_gatt_server_indicate_confirmed(event_gatts_ind_cnfrm_t *event)
@@ -1841,7 +2005,6 @@ static void __bt_handle_gatt_server_indicate_confirmed(event_gatts_ind_cnfrm_t *
                        param);
 
        BT_INFO("Received Indication confirm for client number [%d]", recvd);
-       g_free(event);
        g_free(address);
 }
 
@@ -1878,7 +2041,6 @@ static void __bt_handle_gatt_server_notification_changed(event_gatts_notif_t *ev
                        BLUETOOTH_EVENT_GATT_SERVER_NOTIFICATION_STATE_CHANGED,
                        param);
 
-       g_free(event);
        g_free(address);
 }
 
@@ -1888,17 +2050,17 @@ static void __bt_handle_gatt_mtu_changed_event(event_gatts_mtu_changed_t *event)
        struct gatt_client_info_t *conn_info = NULL;
        GVariant *param = NULL;
        guint8 status = 0;
-       BT_INFO("GATT Server MTU changed event");
 
        conn_info = __bt_find_remote_gatt_client_info_from_conn_id(event->conn_id);
        if (conn_info == NULL) {
                BT_ERR("Cant find connection Information");
-               g_free(event);
                return;
        }
        BT_INFO("Got connection Info GATT client [%s] MTU Size [%d]",
                        conn_info->addr, event->mtu_size);
 
+       __bt_update_mtu_gatt_device(conn_info->addr, event->mtu_size);
+
        param = g_variant_new("(isqy)",
                        result,
                        conn_info->addr,
@@ -1909,7 +2071,6 @@ static void __bt_handle_gatt_mtu_changed_event(event_gatts_mtu_changed_t *event)
        _bt_send_event(BT_GATT_SERVER_EVENT,
                        BLUETOOTH_EVENT_GATT_ATT_MTU_CHANGED,
                        param);
-       g_free(event);
 }
 
 static void __bt_gatt_event_handler(int event_type, gpointer event_data)
@@ -1918,87 +2079,83 @@ static void __bt_gatt_event_handler(int event_type, gpointer event_data)
        switch (event_type) {
                case OAL_EVENT_BLE_SERVER_INSTANCE_INITIALISED: {
                BT_INFO("OAL Event: Server Instance Registered");
-               event_gatts_register_t* event = g_memdup(event_data, sizeof(event_gatts_register_t));
                /* GATT Server Registered event is handled in MAIN thread context */
-               __bt_handle_server_instance_registered(event);
+               __bt_handle_server_instance_registered((event_gatts_register_t *)event_data);
                break;
                                                                }
        case OAL_EVENT_GATTS_SERVICE_ADDED: {
                BT_INFO("OAL Event: GATT Service added");
-               event_gatts_srvc_prm_t *service_parm = g_memdup(event_data, sizeof(event_gatts_srvc_prm_t));
-               __bt_handle_gatt_server_service_added(service_parm);
+               __bt_handle_gatt_server_service_added((event_gatts_srvc_prm_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_CHARACTERISTIC_ADDED: {
                BT_INFO("OAL Event: GATT characteristic added");
-               event_gatts_srvc_charctr_t *char_parm = g_memdup(event_data, sizeof(event_gatts_srvc_charctr_t));
-               __bt_handle_gatt_server_characteristic_added(char_parm);
+               __bt_handle_gatt_server_characteristic_added((event_gatts_srvc_charctr_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_DESCRIPTOR_ADDED: {
                BT_INFO("OAL Event: GATT descriptor added");
-               event_gatts_srvc_descr_t *desc_parm = g_memdup(event_data, sizeof(event_gatts_srvc_descr_t));
-               __bt_handle_gatt_server_descriptor_added(desc_parm);
+               __bt_handle_gatt_server_descriptor_added((event_gatts_srvc_descr_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_SERVICE_STARTED: {
                BT_INFO("OAL Event: GATT Service started");
-               event_gatts_srvc_t *svc_started = g_memdup(event_data, sizeof(event_gatts_srvc_t));
-               __bt_handle_gatt_server_service_started(svc_started);
+               __bt_handle_gatt_server_service_started((event_gatts_srvc_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_SERVICE_STOPED: {
                BT_INFO("OAL Event: GATT Service stopped");
-               event_gatts_srvc_t *svc_stopped = g_memdup(event_data, sizeof(event_gatts_srvc_t));
-               __bt_handle_gatt_server_service_stopped(svc_stopped);
+               __bt_handle_gatt_server_service_stopped((event_gatts_srvc_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_SERVICE_DELETED: {
                BT_INFO("OAL Event: GATT Service deleted");
-               event_gatts_srvc_t *svc_deleted = g_memdup(event_data, sizeof(event_gatts_srvc_t));
-               __bt_handle_gatt_server_service_deleted(svc_deleted);
+               __bt_handle_gatt_server_service_deleted((event_gatts_srvc_t *) event_data);
                break;
        }
        case OAL_EVENT_GATTS_CONNECTION_COMPLETED: {
                BT_INFO("OAL Event: GATT Server Connected");
-               event_gatts_conn_t* event = g_memdup(event_data, sizeof(event_gatts_conn_t));
-               __bt_handle_gatt_server_connection_state(event);
+               __bt_handle_gatt_server_connection_state((event_gatts_conn_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_DISCONNECTION_COMPLETED: {
                BT_INFO("OAL Event: GATT Server Disconnected");
-               event_gatts_conn_t* event = g_memdup(event_data, sizeof(event_gatts_conn_t));
-               __bt_handle_gatt_server_disconnection_state(event);
+               __bt_handle_gatt_server_disconnection_state((event_gatts_conn_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_REQUEST_READ: {
                BT_INFO("OAL Event: GATT Server Read Request");
-               event_gatts_srvc_read_attr_t *read_req = g_memdup(event_data, sizeof(event_gatts_srvc_read_attr_t));
-               __bt_handle_gatt_server_read_requested(read_req);
+               __bt_handle_gatt_server_read_requested((event_gatts_srvc_read_attr_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_REQUEST_WRITE: {
                BT_INFO("OAL Event: GATT Server Write Request");
-               event_gatts_srvc_write_attr_t *write_req = g_memdup(event_data, sizeof(event_gatts_srvc_write_attr_t));
-               __bt_handle_gatt_server_write_requested(write_req);
+               __bt_handle_gatt_server_write_requested((event_gatts_srvc_write_attr_t *)event_data);
+               break;
+       }
+       case OAL_EVENT_GATTS_REQUEST_ACQUIRE_WRITE: {
+               BT_INFO("OAL Event: GATT Server Acquire  Write Request");
+               __bt_handle_gatt_server_acquire_write_requested((event_gatts_srvc_acquire_attr_t*)event_data);
+               break;
+       }
+       case OAL_EVENT_GATTS_REQUEST_ACQUIRE_NOTIFY: {
+               BT_INFO("OAL Event: GATT ServerAcquire Notify  Request");
+               __bt_handle_gatt_server_acquire_notify_requested((event_gatts_srvc_acquire_attr_t*)event_data);
                break;
        }
        case OAL_EVENT_GATTS_IND_CONFIRM: {
                BT_INFO("OAL Event: GATT Server Indication confirmed");
-               event_gatts_ind_cnfrm_t *parm = g_memdup(event_data, sizeof(event_gatts_ind_cnfrm_t));
-               __bt_handle_gatt_server_indicate_confirmed(parm);
+               __bt_handle_gatt_server_indicate_confirmed((event_gatts_ind_cnfrm_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_NOTIFICATION: { /* Tizen Platform Specific */
                BT_INFO("OAL Event: GATT Server DisConnected");
-               event_gatts_notif_t* notif = g_memdup(event_data, sizeof(event_gatts_notif_t));
-               __bt_handle_gatt_server_notification_changed(notif);
+               __bt_handle_gatt_server_notification_changed((event_gatts_notif_t *)event_data);
                break;
        }
        case OAL_EVENT_GATTS_MTU_CHANGED: {
                BT_INFO("OAL Event: GATT Server MTU changed event callback");
-               event_gatts_mtu_changed_t *mtu_changed = g_memdup(event_data, sizeof(event_gatts_mtu_changed_t));
-               __bt_handle_gatt_mtu_changed_event(mtu_changed);
+               __bt_handle_gatt_mtu_changed_event((event_gatts_mtu_changed_t *)event_data);
                break;
        }
 #ifdef TIZEN_GATT_CLIENT
@@ -2018,7 +2175,7 @@ static void __bt_gatt_event_handler(int event_type, gpointer event_data)
                break;
        }
        case OAL_EVENT_GATTC_SERVICE_SEARCH_RESULT: {
-               BT_INFO("OAL Event: GATT Client Service Search Result");
+               BT_DBG("OAL Event: GATT Client Service Search Result");
                __bt_handle_client_service_search_result((event_gattc_service_result_t *) event_data);
                break;
        }
@@ -2028,32 +2185,32 @@ static void __bt_gatt_event_handler(int event_type, gpointer event_data)
                break;
        }
        case OAL_EVENT_GATTC_CHARAC_SERACH_RESULT: {
-               BT_INFO("OAL Event: GATT Client Characteristic Search Result");
+               BT_DBG("OAL Event: GATT Client Characteristic Search Result");
                __bt_handle_client_characteristic_search_result((event_gattc_characteristic_result_t *) event_data);
                break;
        }
        case OAL_EVENT_GATTC_DESC_SERACH_RESULT: {
-               BT_INFO("OAL Event: GATT Client Descriptor Search Result");
+               BT_DBG("OAL Event: GATT Client Descriptor Search Result");
                __bt_handle_client_descriptor_search_result((event_gattc_descriptor_result_t *) event_data);
                break;
        }
        case OAL_EVENT_GATTC_READ_CHARAC: {
-               BT_INFO("OAL Event: GATT Client Characteristic Read Data");
+               BT_DBG("OAL Event: GATT Client Characteristic Read Data");
                __bt_handle_client_characteristic_read_data((event_gattc_read_data *) event_data);
                break;
        }
        case OAL_EVENT_GATTC_READ_DESCR: {
-               BT_INFO("OAL Event: GATT Client Descriptor Read Data");
+               BT_DBG("OAL Event: GATT Client Descriptor Read Data");
                __bt_handle_client_descriptor_read_data((event_gattc_read_data *) event_data);
                break;
        }
        case OAL_EVENT_GATTC_WRITE_CHARAC: {
-               BT_INFO("OAL Event: GATT Client Characteristic Write Data");
+               BT_DBG("OAL Event: GATT Client Characteristic Write Data");
                __bt_handle_client_characteristic_write_data((event_gattc_write_data *) event_data);
                break;
        }
        case OAL_EVENT_GATTC_WRITE_DESCR: {
-               BT_INFO("OAL Event: GATT Client Descriptor Write Data");
+               BT_DBG("OAL Event: GATT Client Descriptor Write Data");
                __bt_handle_client_descriptor_write_data((event_gattc_write_data *) event_data);
                break;
        }
@@ -2072,11 +2229,25 @@ static void __bt_gatt_event_handler(int event_type, gpointer event_data)
                __bt_handle_client_notification_registered((event_gattc_regdereg_notify_t *) event_data, FALSE);
                break;
        }
+       case OAL_EVENT_GATTC_NOTIFY_DATA: {
+               BT_DBG("OAL Event: GATT Client Notification Data");
+               __bt_handle_client_notification_data((event_gattc_notify_data *) event_data);
+               break;
+       }
+       case OAL_EVENT_GATTC_SERVICE_CHANGED_IND: {
+               BT_INFO("OAL Event: GATT Client service changed indication");
+               __bt_handle_client_service_changed_ind((event_gattc_service_changed_data *)event_data);
+               break;
+       }
+       case OAL_EVENT_GATTC_MTU_EXCHANGE_COMPLETED: {
+               BT_INFO("OAL Event: GATT Client MTU Exchange Complete");
+               __bt_handle_client_mtu_exchange_completed((event_gattc_mtu_configured_t *) event_data);
+               break;
+       }
 #endif
        default:
                break;
        }
-       BT_DBG("-");
 }
 
 int _bt_gatt_server_add_service(char *sender, int service_type,
@@ -2270,29 +2441,66 @@ int _bt_gatt_server_send_response(char *sender, bluetooth_gatt_att_data_t *data,
        return BLUETOOTH_ERROR_NONE;
 }
 
-int _bt_gatt_server_send_indication(char *sender, bluetooth_device_address_t *dev_addr,
-               bluetooth_gatt_att_data_t *data,
-               bluetooth_gatt_server_indication_params_t *param)
+int _bt_gatt_server_acquire_send_response(char *sender, bluetooth_gatt_server_acquire_response_params_t *param ,       void *fd_list)
 {
        BT_CHECK_PARAMETER(sender, return);
-       BT_CHECK_PARAMETER(data, return);
        BT_CHECK_PARAMETER(param, return);
-       char *address;
-       gboolean all_send = FALSE;
+       struct gatt_server_req_info *req_info = NULL;
        int ret = OAL_STATUS_SUCCESS;
-       struct gatt_client_info_t *conn;
 
-       address = g_malloc0(BT_ADDRESS_STRING_SIZE);
-       _bt_convert_addr_type_to_string(address, dev_addr->addr);
 
-       if (memcmp(dev_addr->addr, BDADDR_ANY, 6) == 0) {
-               BT_INFO("GATT Server: Send Indication to all connected GATT clients..");
-               all_send = TRUE;
-       } else {
-               BT_INFO("GATT Server: Send Indication to connected GATT client addr [%s]", address);
-       }
+       BT_INFO("GATT acquire Server Response: Req Type [%d] req_id [%d] fd  [%d] mtu[%d]",
+                       param->req_type, param->request_id,
+                        param->fd,
+                       param->mtu);
 
-       /* Attempt to send Notification/Indication to all Connected GATT clients */
+       /* Search for matching Request in List */
+       req_info = __bt_gatt_server_find_request_info(param->request_id, param->req_type);
+       if (!req_info) {
+               BT_ERR("GATT acquire Server Req Info not found for current response..return Error");
+               return BLUETOOTH_ERROR_NOT_IN_OPERATION;
+       }
+
+       ret = gatt_send_response_acquire(req_info->connection_id, param->request_id, 0, param->fd, param->mtu, fd_list);
+
+       if (ret != OAL_STATUS_SUCCESS) {
+               BT_ERR("ret: %d", ret);
+               return BLUETOOTH_ERROR_INTERNAL;
+       }
+
+       BT_INFO("GATT acquire Server Response successfully sent");
+       /* Remove GATT server request from list */
+       gatt_server_requests = g_slist_remove(gatt_server_requests, req_info);
+       g_free(req_info->addr);
+
+       return BLUETOOTH_ERROR_NONE;
+}
+
+
+
+int _bt_gatt_server_send_indication(char *sender, bluetooth_device_address_t *dev_addr,
+               bluetooth_gatt_att_data_t *data,
+               bluetooth_gatt_server_indication_params_t *param)
+{
+       BT_CHECK_PARAMETER(sender, return);
+       BT_CHECK_PARAMETER(data, return);
+       BT_CHECK_PARAMETER(param, return);
+       char *address;
+       gboolean all_send = FALSE;
+       int ret = OAL_STATUS_SUCCESS;
+       struct gatt_client_info_t *conn;
+
+       address = g_malloc0(BT_ADDRESS_STRING_SIZE);
+       _bt_convert_addr_type_to_string(address, dev_addr->addr);
+
+       if (memcmp(dev_addr->addr, BDADDR_ANY, 6) == 0) {
+               BT_INFO("GATT Server: Send Indication to all connected GATT clients..");
+               all_send = TRUE;
+       } else {
+               BT_INFO("GATT Server: Send Indication to connected GATT client addr [%s]", address);
+       }
+
+       /* Attempt to send Notification/Indication to all Connected GATT clients */
        if (all_send) {
                ret = __bt_gatt_send_indication_to_all_connected_clients(data, param);
                if (ret != OAL_STATUS_SUCCESS) {
@@ -2302,7 +2510,7 @@ int _bt_gatt_server_send_indication(char *sender, bluetooth_device_address_t *de
                }
 
        } else {
-               conn = __bt_find_remote_gatt_client_info(address);
+               conn = _bt_find_remote_gatt_client_info(address);
                if (conn) {
                        ret = gatts_send_indication(param->instance_id, param->atrribute_handle,
                                        conn->connection_id, data->length,
@@ -2356,6 +2564,38 @@ int _bt_gatt_server_update_attribute_value(char *sender, int instance_id,
        return BLUETOOTH_ERROR_NONE;
 }
 
+int _bt_request_att_mtu(bluetooth_device_address_t *device_address,
+               unsigned int mtu)
+{
+       struct gatt_server_info_t *conn_info = NULL;
+       char *addr = NULL;
+       int ret = OAL_STATUS_SUCCESS;
+
+       addr = g_malloc0(sizeof(char) * BT_ADDRESS_STRING_SIZE);
+       _bt_convert_addr_type_to_string(addr, device_address->addr);
+
+       /* Check if remote GATT Server is connected or not */
+       conn_info = _bt_find_remote_gatt_server_info(addr);
+       if (conn_info) {
+               BT_INFO("GATT Server [%s] is connected, conn Id [%d]",
+                               conn_info->addr, conn_info->connection_id);
+       } else {
+               BT_ERR("GATT Server is not yet connected..");
+               g_free(addr);
+               return BLUETOOTH_ERROR_NOT_CONNECTED;
+       }
+
+       ret = gattc_configure_mtu(conn_info->connection_id, mtu);
+       if (ret != OAL_STATUS_SUCCESS) {
+               BT_ERR("ret: %d", ret);
+               g_free(addr);
+               return BLUETOOTH_ERROR_INTERNAL;
+       }
+
+       g_free(addr);
+       return BLUETOOTH_ERROR_NONE;
+}
+
 int _bt_get_att_mtu(bluetooth_device_address_t *address,
                unsigned int *mtu)
 {
@@ -2370,12 +2610,12 @@ int _bt_get_att_mtu(bluetooth_device_address_t *address,
 
        BT_INFO("Get current MTU size for the remote client:DevAddress:[%s]", addr);
 
-       conn_info = __bt_find_remote_gatt_client_info(addr);
+       conn_info = _bt_find_remote_gatt_client_info(addr);
        if (conn_info) {
                BT_INFO("GATT Client [%s] is connected, conn Id [%d] Instance ID [%d]",
                                conn_info->addr, conn_info->connection_id, conn_info->instance_id);
        } else {
-               BT_ERR("GATT Client [%s] is not yet connected..");
+               BT_ERR("GATT Client [%s] is not yet connected..", addr);
                return BLUETOOTH_ERROR_NOT_CONNECTED;
        }
 
@@ -2384,20 +2624,27 @@ int _bt_get_att_mtu(bluetooth_device_address_t *address,
                BT_ERR("ret: %d", ret);
                return BLUETOOTH_ERROR_INTERNAL;
        }
+
        BT_INFO("ATT MTU received from OAL [%d]", stack_mtu);
        *mtu = (unsigned int)stack_mtu;
+
+       if (*mtu == 0) {
+               BT_ERR("MTU value is zero, GATT Client [%s] is not yet connected..", addr);
+               return BLUETOOTH_ERROR_NOT_CONNECTED;
+       }
+
        return BLUETOOTH_ERROR_NONE;
 }
 
 #ifdef TIZEN_GATT_CLIENT
 /* GATT Client utility static functions */
-static bt_gatt_service_info_list_t * __bt_get_service_info_list(int conn_id)
+static bt_gatt_service_info_list_t *__bt_get_service_info_list(int conn_id)
 {
        GSList *l;
        bt_gatt_service_info_list_t *info = NULL;
 
        for (l = list_gatt_info; l != NULL; l = g_slist_next(l)) {
-               info = (bt_gatt_service_info_list_t*)l->data;
+               info = (bt_gatt_service_info_list_t *)l->data;
                if (info == NULL)
                        continue;
 
@@ -2408,14 +2655,14 @@ static bt_gatt_service_info_list_t * __bt_get_service_info_list(int conn_id)
        return NULL;
 }
 
-static bt_gatt_service_info_t__bt_find_matching_service(
+static bt_gatt_service_info_t *__bt_find_matching_service(
                bt_gatt_service_info_list_t *svc_list, oal_gatt_srvc_id_t *svc)
 {
        GSList *l;
        bt_gatt_service_info_t *info = NULL;
 
        for (l = svc_list->services; l != NULL; l = g_slist_next(l)) {
-               info = (bt_gatt_service_info_t*)l->data;
+               info = (bt_gatt_service_info_t *)l->data;
                if (info == NULL)
                        continue;
 
@@ -2428,14 +2675,14 @@ static bt_gatt_service_info_t* __bt_find_matching_service(
        return NULL;
 }
 
-static bt_gatt_char_info_t__bt_find_matching_charc(
+static bt_gatt_char_info_t *__bt_find_matching_charc(
                bt_gatt_service_info_t *svc_info, oal_gatt_id_t *charc)
 {
        GSList *l;
        bt_gatt_char_info_t *info = NULL;
 
        for (l = svc_info->chars; l != NULL; l = g_slist_next(l)) {
-               info = (bt_gatt_char_info_t*)l->data;
+               info = (bt_gatt_char_info_t *)l->data;
                if (info == NULL)
                        continue;
 
@@ -2448,14 +2695,14 @@ static bt_gatt_char_info_t* __bt_find_matching_charc(
        return NULL;
 }
 
-static bt_gatt_descriptor_info_t__bt_find_matching_desc(
+static bt_gatt_descriptor_info_t *__bt_find_matching_desc(
                bt_gatt_char_info_t *char_info, oal_gatt_id_t *desc)
 {
        GSList *l;
        bt_gatt_descriptor_info_t *info = NULL;
 
        for (l = char_info->descs; l != NULL; l = g_slist_next(l)) {
-               info = (bt_gatt_descriptor_info_t*)l->data;
+               info = (bt_gatt_descriptor_info_t *)l->data;
                if (info == NULL)
                        continue;
 
@@ -2567,7 +2814,6 @@ static void __bt_build_service_browse_info(int conn_id,
        struct gatt_server_info_t *conn_info = NULL;
        int count = 0;
        char uuid_string[BLUETOOTH_UUID_STRING_MAX];
-       BT_INFO("+");
 
        conn_info = __bt_find_remote_gatt_server_info_from_conn_id(conn_id);
 
@@ -2577,12 +2823,11 @@ static void __bt_build_service_browse_info(int conn_id,
        _bt_convert_addr_string_to_type(info->device_addr.addr, conn_info->addr);
 
        svc_info_list = __bt_get_service_info_list(conn_id);
-
        if (!svc_info_list)
                return;
 
        info->count = g_slist_length(svc_info_list->services);
-       BT_INFO("Total services present in the svc info list for this conn id [%d] is [%d]",
+       BT_DBG("Total services present in the svc info list for this conn id [%d] is [%d]",
                        conn_id, info->count);
 
        for (l = svc_info_list->services; l != NULL; l = g_slist_next(l)) {
@@ -2593,14 +2838,12 @@ static void __bt_build_service_browse_info(int conn_id,
                memcpy(&uuid.uuid, &svc_info->uuid, BLUETOOTH_UUID_HEX_MAX_LEN);
                _bt_uuid_to_string(&uuid, uuid_string);
 
-               BT_INFO("Service UUID formed [%s] strlen [%d]", uuid_string, strlen(uuid_string));
+               BT_INFO("[%d]  %s  [%s]", count, uuid_string, _bt_convert_uuid_to_string(uuid_string));
 
                /* Fill UUID of service */
                g_strlcpy(info->uuids[count], uuid_string,
                                BLUETOOTH_UUID_STRING_MAX);
 
-               BT_INFO("Service UUID formed  TO be sent [%s] strlen [%d]",
-                               info->uuids[count], strlen(info->uuids[count]));
                /* Fill instance ID of service */
                info->inst_id[count] = svc_info->inst_id;
 
@@ -2610,8 +2853,6 @@ static void __bt_build_service_browse_info(int conn_id,
                /* Increment count of services browsed */
                count++;
        }
-
-       BT_INFO("Total services browsed [%d]", count);
 }
 
 static void __bt_build_char_browse_info(int conn_id,
@@ -2626,8 +2867,6 @@ static void __bt_build_char_browse_info(int conn_id,
        int count = 0;
        char uuid_string[BLUETOOTH_UUID_STRING_MAX];
 
-       BT_INFO("+");
-
        conn_info = __bt_find_remote_gatt_server_info_from_conn_id(conn_id);
        if (!conn_info)
                return;
@@ -2643,7 +2882,6 @@ static void __bt_build_char_browse_info(int conn_id,
        }
 
        info->count = g_slist_length(svc_info->chars);
-       BT_INFO("Total count of Characteristics [%d]", info->count);
 
        for (l = svc_info->chars; l != NULL; l = g_slist_next(l)) {
                char_info = (bt_gatt_char_info_t*)l->data;
@@ -2666,7 +2904,7 @@ static void __bt_build_char_browse_info(int conn_id,
                /* Increment count of services browsed */
                count++;
        }
-       BT_INFO("Total characteristics browsed [%d]", count);
+       BT_DBG("Total characteristics browsed [%d]", count);
 }
 
 static void __bt_build_descriptor_browse_info(int conn_id,
@@ -2691,14 +2929,16 @@ static void __bt_build_descriptor_browse_info(int conn_id,
        memcpy(&info->char_uuid, char_info->uuid, BLUETOOTH_UUID_HEX_MAX_LEN);
        info->char_inst_id = char_info->inst_id;
 
+       /* Fill property of the parent characteristic of this descriptor */
+       info->char_props_map = char_info->props;
+
+       info->count = g_slist_length(char_info->descs);
+
        if (!char_info->descs) {
                BT_ERR("No Descriptors browsed for address [%s]", conn_info->addr);
                return;
        }
 
-       info->count = g_slist_length(char_info->descs);
-       BT_INFO("Total count of Descriptors [%d]", info->count);
-
        for (l = char_info->descs; l != NULL; l = g_slist_next(l)) {
                desc_info = (bt_gatt_descriptor_info_t*)l->data;
                if (desc_info == NULL)
@@ -2714,8 +2954,6 @@ static void __bt_build_descriptor_browse_info(int conn_id,
                /* Fill instance ID of Descriptor */
                info->inst_id[count] = desc_info->inst_id;
 
-               /* Fill property of the parent characteristic of this descriptor */
-               info->char_props_map = char_info->props;
 
                /* Increment count of Descriptor browsed */
                count++;
@@ -2724,21 +2962,49 @@ static void __bt_build_descriptor_browse_info(int conn_id,
        BT_INFO("Total descriptors browsed [%d]", count);
 }
 
-
-static void __bt_cleanup_remote_services(struct gatt_server_info_t *conn_info)
+static void __bt_free_service_info(bt_gatt_service_info_t *svc)
 {
-       GSList *l;
-       GSList *ll;
-       GSList *lll;
-       GSList *llll;
-
-       bt_gatt_service_info_list_t * svc_info_list = NULL;
-       bt_gatt_service_info_t *svc = NULL;
+       GSList *ll, *lll, *llll;
        bt_gatt_char_info_t *chr = NULL;
        bt_gatt_descriptor_info_t *desc = NULL;
        bt_gatt_included_service_info_t *incl_svc = NULL;
 
-       BT_INFO("Start Cleanup of all services");
+       BT_DBG("Service info Is Prim[%d] Inst ID [%d]", svc->is_primary, svc->inst_id);
+       /* Delete all chars and its descriptors */
+       for (ll = svc->chars; ll != NULL; ) {
+               chr = (bt_gatt_char_info_t *)ll->data;
+               ll = g_slist_next(ll);
+               if (chr == NULL)
+                       continue;
+
+               for (lll = chr->descs; lll != NULL; ) {
+                       desc = (bt_gatt_descriptor_info_t *)lll->data;
+                       lll = g_slist_next(lll);
+                       if (desc == NULL)
+                               continue;
+                       chr->descs = g_slist_remove(chr->descs, desc);
+                       g_free(desc);
+               }
+               svc->chars = g_slist_remove(svc->chars, chr);
+               g_free(chr);
+       }
+
+       /* Delete all included services */
+       for (llll = svc->included_svcs; llll != NULL; ) {
+               incl_svc = (bt_gatt_included_service_info_t *)llll->data;
+               llll = g_slist_next(llll);
+               if (incl_svc == NULL)
+                       continue;
+               svc->included_svcs = g_slist_remove(svc->included_svcs, incl_svc);
+               g_free(incl_svc);
+       }
+}
+
+static void __bt_cleanup_remote_services(struct gatt_server_info_t *conn_info)
+{
+       bt_gatt_service_info_list_t *svc_info_list = NULL;
+       bt_gatt_service_info_t *svc = NULL;
+       GSList *l;
 
        svc_info_list = __bt_get_service_info_list(conn_info->connection_id);
        if (!svc_info_list) {
@@ -2747,52 +3013,20 @@ static void __bt_cleanup_remote_services(struct gatt_server_info_t *conn_info)
                return;
        }
 
-       BT_INFO("Num Services [%d]", g_slist_length(svc_info_list->services));
-       for (l = svc_info_list->services; l;) {
-               svc = (bt_gatt_service_info_t*)l->data;
+       BT_INFO("Start Cleanup of all services. Num Services [%d]", g_slist_length(svc_info_list->services));
+       for (l = svc_info_list->services; l != NULL; ) {
+               svc = (bt_gatt_service_info_t *)l->data;
                l = g_slist_next(l);
                if (svc == NULL)
                        continue;
 
-               BT_INFO("Service info Is Prim[%d] Inst ID [%d]",
-                               svc->is_primary, svc->inst_id);
-               BT_INFO("Num chars [%d]", g_slist_length(svc->chars));
-               /* Delete all chars and its descriptors */
-               for (ll = svc->chars; ll;) {
-                       chr = (bt_gatt_char_info_t*)ll->data;
-                       ll = g_slist_next(ll);
-                       if (chr == NULL)
-                               continue;
-
-                       BT_INFO("Num descs [%d]", g_slist_length(chr->descs));
-                       for (lll = chr->descs; lll;) {
-                               desc = (bt_gatt_descriptor_info_t *)lll->data;
-                               lll = g_slist_next(lll);
-                               if (desc == NULL)
-                                       continue;
-                               chr->descs = g_slist_remove(chr->descs, desc);
-                               g_free(desc);
-                       }
-                       svc->chars = g_slist_remove(svc->chars, chr);
-                       g_free(chr);
-               }
-
-               BT_INFO("Num incl svcs [%d]", g_slist_length(svc->included_svcs));
-               /* Delete all included services */
-               for (llll = svc->included_svcs; llll;) {
-                       incl_svc = (bt_gatt_included_service_info_t*)llll->data;
-                       llll = g_slist_next(llll);
-                       if (incl_svc == NULL)
-                               continue;
-
-                       svc->included_svcs = g_slist_remove(svc->included_svcs, incl_svc);
-                       g_free(incl_svc);
-               }
+               __bt_free_service_info(svc);
                svc_info_list->services = g_slist_remove(svc_info_list->services, svc);
                g_free(svc);
        }
+
+       list_gatt_info = g_slist_remove(list_gatt_info, svc_info_list);
        g_free(svc_info_list);
-       BT_INFO("Cleanup of all services done");
 }
 
 int _bt_register_gatt_client_instance(const char *sender,
@@ -2805,7 +3039,7 @@ int _bt_register_gatt_client_instance(const char *sender,
        oal_uuid_t uuid;
 
        /* App should ensure that it should not send */
-       BT_INFO("###Check on which instance GATT Client instance can be initialized....");
+       BT_INFO("Check on which instance GATT Client instance can be initialized....");
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
                if (numapps[k].is_initialized == 1) {
                        BT_INFO("Instance ID [%d] is already in use..Check next slot",
@@ -2871,11 +3105,8 @@ static void __bt_handle_client_instance_registered(event_gattc_register_t *data)
 
        /* Platform GATT client framwork does not use Default GATT client instance
           This GATT client instance is never deregistred in the lifetime of bt-service */
-       BT_INFO("Default UUID [%s] current registered uuid [%s]",
-                       DEFAULT_GATT_CLIENT_UUID, uuid_string);
        if (g_strcmp0(uuid_string, DEFAULT_GATT_CLIENT_UUID) == 0) {
-               BT_INFO("Default client Instance Registered [%s] Client instance [%d]",
-                               uuid_string, data->client_if);
+               BT_INFO("Default client Instance Registered");
                gatt_default_client = data->client_if;
                g_free(uuid_string);
                return;
@@ -2885,8 +3116,7 @@ static void __bt_handle_client_instance_registered(event_gattc_register_t *data)
                info = &numapps[k];
 
                if (g_strcmp0(info->uuid, uuid_string) == 0) {
-                       BT_INFO("Found GATT client.. UUID [%s], sender [%s]", info->uuid, info->sender);
-                       BT_INFO("Slot [%d] occupied", k);
+                       BT_INFO("Found GATT client..  sender [%s]  Slot [%d] occupied", info->sender, k);
                        info->is_initialized = TRUE;
                        info->client_id = data->client_if;
                        __bt_gatt_handle_pending_request_info(BLUETOOTH_ERROR_NONE, BT_GATT_CLIENT_REGISTER,
@@ -2921,7 +3151,7 @@ static void __bt_handle_client_connected(event_gattc_conn_t *event_data)
 
        if (result == BLUETOOTH_ERROR_NONE) {
                /* Check if device is already in connected list */
-               conn_info = __bt_find_remote_gatt_server_info(address);
+               conn_info = _bt_find_remote_gatt_server_info(address);
 
                if (!conn_info) {
                        /* Send event to BT-API */
@@ -2934,10 +3164,12 @@ static void __bt_handle_client_connected(event_gattc_conn_t *event_data)
                        conn_info = g_new0(struct gatt_server_info_t, 1);
                        conn_info->addr = g_strdup(address);
                        conn_info->client_id = event_data->client_if;
-                       BT_INFO("Added GATT server addr[%s]", conn_info->addr);
+#ifdef __INTEGRATE_GATT_INFO__
+                       conn_info->instance_id = -1;
+#endif
                        conn_info->connection_id = event_data->conn_id;
                        gatt_server_info_list = g_slist_append(gatt_server_info_list, conn_info);
-                       BT_INFO("Total num of connected Remote GATT server devices [%d]",
+                       BT_DBG("Total num of connected Remote GATT server devices [%d]",
                                        g_slist_length(gatt_server_info_list));
 
 #if 0
@@ -2949,6 +3181,8 @@ static void __bt_handle_client_connected(event_gattc_conn_t *event_data)
 #endif
                } else
                        BT_ERR("Local GATT Client connected event for addr[%s], but device is in connected list already", address);
+
+               __bt_add_mtu_gatt_device(address);
        } else
                BT_ERR("GATT Client Connection failed!!");
 
@@ -2985,6 +3219,7 @@ static void __bt_handle_client_disconnected(event_gattc_conn_t *event_data)
                        __bt_gatt_handle_pending_request_info(result, BT_CONNECT_LE,
                                        address, BT_ADDRESS_STRING_SIZE);
                        BT_ERR("Failed to connect Local GATT Remote addr[%s]", address);
+                       g_free(address);
                        return;
                }
        } else {
@@ -2996,7 +3231,7 @@ static void __bt_handle_client_disconnected(event_gattc_conn_t *event_data)
                        address, event_data->client_if, event_data->conn_id, event_data->status);
 
        /* Remove Connection info */
-       conn_info = __bt_find_remote_gatt_server_info(address);
+       conn_info = _bt_find_remote_gatt_server_info(address);
 
        if (conn_info) {
                param = g_variant_new("(is)", result, address);
@@ -3017,6 +3252,8 @@ static void __bt_handle_client_disconnected(event_gattc_conn_t *event_data)
        } else
                BT_INFO("Can not find conn info, already removed!");
 
+       __bt_remove_mtu_gatt_device(address);
+
        /* If outgoing connection Info is present, then remove it */
        out_conn_info = __bt_find_gatt_outgoing_conn_info(address);
        if (out_conn_info) {
@@ -3032,27 +3269,20 @@ static void __bt_handle_client_disconnected(event_gattc_conn_t *event_data)
 static void __bt_handle_client_service_search_result(
                event_gattc_service_result_t *event_data)
 {
-       BT_INFO("+");
-       BT_INFO("received the gatt service search result");
        /* Pre: status is never fail from OAL */
 
        /* Find service list from address */
        bt_gatt_service_info_list_t *svc_info_list;
        bt_gatt_service_info_t *svc_info;
-       BT_INFO("Search Result: status [%d] conn_id [%d]",
-                       event_data->conn_status.status,
-                       event_data->conn_status.conn_id);
 
        svc_info_list = __bt_get_service_info_list(event_data->conn_status.conn_id);
        if (!svc_info_list) {
-               BT_INFO("Service info list not present for this connection ID, means first time browse");
+               BT_DBG("Service info list not present for connection ID %d, means first time browse", event_data->conn_status.conn_id);
                /* Means for this conn_id, no services are ever browsed, first time,
                   create service info list for this conn_id */
                svc_info_list = g_malloc0(sizeof(bt_gatt_service_info_list_t));
                svc_info_list->conn_id = event_data->conn_status.conn_id;
                list_gatt_info = g_slist_append(list_gatt_info, svc_info_list);
-       } else {
-               BT_INFO("Service info list Already present for this connection ID, means not first time browse for this conn ID ");
        }
 
        /* send list and current service's uuid and instance id to find it  */
@@ -3063,9 +3293,8 @@ static void __bt_handle_client_service_search_result(
           in remote GATT device, update uuid info in svc info list structure, to be used when
           search is completed */
        if (!svc_info) {
-               BT_INFO("Service Not found in svc info list for this connection ID");
                if (svc_info_list->info.is_changed) {
-                       BT_INFO("Service Changed indication already found for this connection ID");
+                       BT_DBG("Service Changed indication already found for connection ID %d", event_data->conn_status.conn_id);
                        memcpy(svc_info_list->info.uuid, event_data->srvc_id.id.uuid.uuid, BLUETOOTH_UUID_HEX_MAX_LEN);
                }
                /* Create and add new service in service list */
@@ -3074,9 +3303,8 @@ static void __bt_handle_client_service_search_result(
                svc_info->inst_id = event_data->srvc_id.id.inst_id;
                svc_info->is_primary = event_data->srvc_id.is_prmry;
                svc_info_list->services = g_slist_append(svc_info_list->services, svc_info);
-               BT_INFO("Service created and added in Svc info listf or this connection ID");
+               BT_DBG("Service created and added in Svc info list or connection ID %d", event_data->conn_status.conn_id);
        } else {
-               BT_INFO("Service Already found to be present inside the svc info list for this connection ID");
                /* If returned matching service info, then just update service_rmeoved value inside it to 0 */
                svc_info->is_removed = 0;
        }
@@ -3085,7 +3313,6 @@ static void __bt_handle_client_service_search_result(
 static void __bt_handle_client_service_search_completed(
                event_gattc_conn_status_t *event_data)
 {
-       BT_INFO("+");
        struct gatt_server_info_t *conn_info = NULL;
        bt_gatt_service_info_list_t *svc_info_list;
        bt_gatt_service_info_t *svc_info;
@@ -3169,9 +3396,6 @@ static void __bt_handle_client_characteristic_search_result(
        bt_gatt_char_info_t *char_info;
        bt_char_browse_info_t browse_info;
 
-       BT_INFO("Characteristic search result status [%d]",
-                       event_data->conn_status.status);
-
        memset(&browse_info, 0x00, sizeof(bt_char_browse_info_t));
 
        /* If success */
@@ -3193,12 +3417,10 @@ static void __bt_handle_client_characteristic_search_result(
 
                /* Find Matching char from service info in event */
                char_info = __bt_find_matching_charc(svc_info, &event_data->char_id);
-               if (char_info == NULL)
-                       BT_ERR("char_info is NULL");
 
                /* If not found, then add new characteristic and return */
                if (!char_info) {
-                       BT_INFO(" add new characteristic");
+                       BT_DBG("Add new characteristic");
                        char_info = g_malloc0(sizeof(bt_gatt_char_info_t));
                        memcpy(char_info->uuid, event_data->char_id.uuid.uuid, BLUETOOTH_UUID_HEX_MAX_LEN);
 
@@ -3207,16 +3429,25 @@ static void __bt_handle_client_characteristic_search_result(
                        svc_info->chars = g_slist_append(svc_info->chars, char_info);
                } else {
                        /* If found, then return */
-                       BT_INFO("Characteristic browsed is already presesnt");
+                       BT_DBG("update char property as Characteristic browsed is already present");
+                       char_info->props |= event_data->char_prop;
                }
        } else {
                /* If Not success: Means Charc browse is completed  */
                /* Find char list from service in event */
                /* Find service list from address */
                svc_info_list = __bt_get_service_info_list(event_data->conn_status.conn_id);
+               if (svc_info_list == NULL) {
+                       BT_ERR("svc_info_list is NULL");
+                       return;
+               }
 
                /* Find service info from service in event */
                svc_info = __bt_find_matching_service(svc_info_list, &event_data->srvc_id);
+               if (svc_info == NULL) {
+                       BT_ERR("svc_info is NULL");
+                       return;
+               }
 
                /* Build char list from service in event */
                __bt_build_char_browse_info(event_data->conn_status.conn_id,
@@ -3240,7 +3471,7 @@ static void __bt_handle_client_descriptor_search_result(
        bt_gatt_descriptor_info_t *desc_info;
        bt_descriptor_browse_info_t browse_info;
 
-       BT_INFO("descriptor search result status [%d]", event_data->conn_status.status);
+       BT_DBG("descriptor search result status [%d]", event_data->conn_status.status);
 
        memset(&browse_info, 0x00, sizeof(bt_descriptor_browse_info_t));
 
@@ -3248,10 +3479,24 @@ static void __bt_handle_client_descriptor_search_result(
        if (event_data->conn_status.status == OAL_STATUS_SUCCESS) {
                /* Find service list from address */
                svc_info_list = __bt_get_service_info_list(event_data->conn_status.conn_id);
+               if (svc_info_list == NULL) {
+                       BT_ERR("svc_info_list is NULL");
+                       return;
+               }
+
                svc_info = __bt_find_matching_service(svc_info_list, &event_data->srvc_id);
+               if (svc_info == NULL) {
+                       BT_ERR("svc_info is NULL");
+                       return;
+               }
+
                char_info = __bt_find_matching_charc(svc_info, &event_data->char_id);
-               desc_info = __bt_find_matching_desc(char_info, &event_data->descr_id);
+               if (char_info == NULL) {
+                       BT_ERR("char_info is NULL");
+                       return;
+               }
 
+               desc_info = __bt_find_matching_desc(char_info, &event_data->descr_id);
                /* If not found, add new descriptor and return */
                if (!desc_info) {
                        desc_info = g_malloc0(sizeof(bt_gatt_descriptor_info_t));
@@ -3270,12 +3515,24 @@ static void __bt_handle_client_descriptor_search_result(
                /* Find included service list from service in event */
                /* Create response and return by sending event*/
                svc_info_list = __bt_get_service_info_list(event_data->conn_status.conn_id);
+               if (svc_info_list == NULL) {
+                       BT_ERR("svc_info_list is NULL");
+                       return;
+               }
 
                /* Find service info from service in event */
                svc_info = __bt_find_matching_service(svc_info_list, &event_data->srvc_id);
+               if (svc_info == NULL) {
+                       BT_ERR("svc_info is NULL");
+                       return;
+               }
 
                /* Find char info from char in event */
                char_info = __bt_find_matching_charc(svc_info, &event_data->char_id);
+               if (char_info == NULL) {
+                       BT_ERR("char_info is NULL");
+                       return;
+               }
 
                /* Build descriptor list from char in event */
                __bt_build_descriptor_browse_info(event_data->conn_status.conn_id,
@@ -3304,11 +3561,8 @@ static void __bt_handle_client_characteristic_read_data(
        char *read_val = NULL;
        char *svc_uuid = NULL;
        char *char_uuid = NULL;
-       int i;
        int uuid_len = 16;
 
-       BT_INFO("+");
-
        //memset(&read_info, 0x00, sizeof(bt_gatt_handle_property_t));
        memset(&read_info, 0x00, sizeof(bluetooth_gatt_client_char_prop_info_t));
 
@@ -3337,11 +3591,10 @@ Note: Even in case of failure, address, handles and result code should be return
        if (event_data->uuid_status.conn_status.status != OAL_STATUS_SUCCESS)
                result = BLUETOOTH_ERROR_INTERNAL;
        else {
-               BT_ERR("read data len is [%d]", event_data->data_len);
                if (event_data->data_len > 0) {
                        /* DEBUG */
-                       for (i = 0; i < event_data->data_len; i++)
-                               BT_INFO("Data[%d] = [0x%x]", i, event_data->data[i]);
+               //      for (i = 0; i < event_data->data_len; i++)
+               //              BT_INFO("Data[%d] = [0x%x]", i, event_data->data[i]);
 
                        /* Read data */
                        read_val = g_memdup(&event_data->data[0], event_data->data_len);
@@ -3462,6 +3715,7 @@ static void __bt_handle_client_descriptor_read_data(
        if (event_data->uuid_status.conn_status.status != OAL_STATUS_SUCCESS)
                result = BLUETOOTH_ERROR_INTERNAL;
        else {
+               BT_INFO("desc data len:%d", event_data->data_len);
                if (event_data->data_len > 0) {
                        /* DEBUG */
                        for (i = 0; i < event_data->data_len; i++)
@@ -3475,55 +3729,60 @@ static void __bt_handle_client_descriptor_read_data(
                                        read_val,
                                        event_data->data_len,
                                        TRUE, NULL, NULL);
-                       /* SVC uuid */
-                       svc_uuid = g_memdup(&event_data->uuid_status.srvc_id.id.uuid.uuid[0], uuid_len);
+               } else {
+                       BT_INFO("Descriptor Read success, but no data!!!");
 
-                       data_svc_uuid = g_variant_new_from_data(
+                       data = g_variant_new_from_data(
                                        G_VARIANT_TYPE_BYTESTRING,
-                                       svc_uuid,
-                                       16,
-                                       TRUE, NULL, NULL);
+                                       NULL,
+                                       0,
+                                       FALSE, NULL, NULL);
+               }
+               /* SVC uuid */
+               svc_uuid = g_memdup(&event_data->uuid_status.srvc_id.id.uuid.uuid[0], uuid_len);
 
-                       /* Char uuid */
-                       char_uuid = g_memdup(&event_data->uuid_status.char_id.uuid.uuid[0], uuid_len);
+               data_svc_uuid = g_variant_new_from_data(
+                               G_VARIANT_TYPE_BYTESTRING,
+                               svc_uuid,
+                               16,
+                               TRUE, NULL, NULL);
 
-                       data_char_uuid = g_variant_new_from_data(
-                                       G_VARIANT_TYPE_BYTESTRING,
-                                       char_uuid,
-                                       16,
-                                       TRUE, NULL, NULL);
+               /* Char uuid */
+               char_uuid = g_memdup(&event_data->uuid_status.char_id.uuid.uuid[0], uuid_len);
 
-                       /* Desc uuid */
-                       desc_uuid = g_memdup(&event_data->uuid_status.descr_id.uuid.uuid[0], uuid_len);
+               data_char_uuid = g_variant_new_from_data(
+                               G_VARIANT_TYPE_BYTESTRING,
+                               char_uuid,
+                               16,
+                               TRUE, NULL, NULL);
 
-                       data_desc_uuid = g_variant_new_from_data(
-                                       G_VARIANT_TYPE_BYTESTRING,
-                                       desc_uuid,
-                                       16,
-                                       TRUE, NULL, NULL);
+               /* Desc uuid */
+               desc_uuid = g_memdup(&event_data->uuid_status.descr_id.uuid.uuid[0], uuid_len);
 
-                       param = g_variant_new("(isn@ayin@ayin@ayin@ay)", result,
-                                       conn_info->addr,
-                                       uuid_len,
-                                       data_svc_uuid,
-                                       event_data->uuid_status.srvc_id.id.inst_id,
-                                       16,
-                                       data_char_uuid,
-                                       event_data->uuid_status.char_id.inst_id,
-                                       16,
-                                       data_desc_uuid,
-                                       event_data->uuid_status.descr_id.inst_id,
-                                       event_data->data_len,
-                                       data);
+               data_desc_uuid = g_variant_new_from_data(
+                               G_VARIANT_TYPE_BYTESTRING,
+                               desc_uuid,
+                               16,
+                               TRUE, NULL, NULL);
+
+               param = g_variant_new("(isn@ayin@ayin@ayin@ay)", result,
+                               conn_info->addr,
+                               uuid_len,
+                               data_svc_uuid,
+                               event_data->uuid_status.srvc_id.id.inst_id,
+                               16,
+                               data_char_uuid,
+                               event_data->uuid_status.char_id.inst_id,
+                               16,
+                               data_desc_uuid,
+                               event_data->uuid_status.descr_id.inst_id,
+                               event_data->data_len,
+                               data);
 
-                       /* Send Event */
-                       _bt_send_event(BT_GATT_CLIENT_EVENT,
+               /* Send Event */
+               _bt_send_event(BT_GATT_CLIENT_EVENT,
                                        BLUETOOTH_EVENT_GATT_READ_DESC,
                                        param);
-               } else {
-                       BT_ERR("Descriptor Read success, but no data!!!");
-                       result = BLUETOOTH_ERROR_INTERNAL;
-               }
        }
        BT_INFO("Send DBUS rpely for GATT Read Descriptor");
        /* Send DBUS return */
@@ -3759,6 +4018,7 @@ static void __bt_hanlde_le_device_disconnection(event_dev_conn_status_t *event_d
 
        __bt_gatt_handle_pending_request_info(result, BT_CONNECT_LE, address,
                                                 BT_ADDRESS_STRING_SIZE);
+       g_free(address);
 }
 
 static void __bt_handle_client_notification_registered(
@@ -3773,20 +4033,16 @@ static void __bt_handle_client_notification_registered(
        memset(&notif_info, 0x00, sizeof(bt_gatt_notif_reg_info_t));
 
        BT_INFO("Client Interface [%d] status [%d]",
-                       event_data->client_if,
+                       event_data->conn_id,
                        event_data->status);
 
        /* Extract Address from conn_id of event data */
-       conn_info = __bt_find_remote_gatt_server_info_from_client_if(
-                       event_data->client_if);
-
+       conn_info = __bt_find_remote_gatt_server_info_from_conn_id(event_data->conn_id);
        if (!conn_info) {
                BT_INFO("Connection Info is not present, return");
                return;
        }
-       BT_INFO("Notification Registered for addr [%s]",
-                       conn_info->addr);
-
+       BT_INFO("Notification Registered for addr [%s]", conn_info->addr);
 
        /* Fill svc informations in buffer */
        memcpy(&notif_info.svc_uuid,
@@ -3813,50 +4069,209 @@ static void __bt_handle_client_notification_registered(
                        sizeof(bt_gatt_notif_reg_info_t));
 }
 
-
-gboolean _bt_is_remote_gatt_device_connected(bluetooth_device_address_t *address)
+static void __bt_handle_client_notification_data(event_gattc_notify_data *event_data)
 {
-       char *addr;
-       struct gatt_server_info_t *conn_info =  NULL;
-       gboolean connected = FALSE;
-       BT_INFO("+");
+       /* No status in this event from OAL */
+       int result = BLUETOOTH_ERROR_NONE;
 
-       addr = g_malloc0(BT_ADDRESS_STRING_SIZE);
-       _bt_convert_addr_type_to_string(addr,
-                       (unsigned char *)&(address->addr));
+       /* Read Information data structures */
+       GVariant *param = NULL;
+       GVariant *data = NULL;
+       GVariant *data_svc_uuid = NULL;
+       GVariant *data_char_uuid = NULL;
+       char *read_val = NULL;
+       char *svc_uuid = NULL;
+       char *char_uuid = NULL;
+       char *addr = NULL;
+       int i;
+       int uuid_len = 16;
+       BT_INFO("+");
 
-       BT_INFO("Check Connected or not for [%s]", addr);
-       /* Check if device is already in connected list */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
+       BT_INFO("Notifcation of charc data changed");
 
-       if (conn_info) {
-               BT_INFO("Remote GATT Server device [%s] is Connected", conn_info->addr);
-               connected = TRUE;
-       } else
-               BT_INFO("Remote GATT Server Device [%s] is not Connected", addr);
-       g_free(addr);
-       return connected;
-}
+       if (event_data->data_len > 0) {
+               /* DEBUG */
+               for (i = 0; i < event_data->data_len; i++)
+                       BT_INFO("Data[%d] = [0x%x]", i, event_data->data[i]);
 
+               /* Fill address */
+               addr = g_malloc0(BT_ADDRESS_STRING_SIZE);
+               _bt_convert_addr_type_to_string(addr,
+                               (unsigned char *)&(event_data->address.addr));
 
-int _bt_connect_le_device(bluetooth_device_address_t *address,
-               int auto_connect, int client_id)
-{
-       struct gatt_server_info_t *conn_info = NULL;
-       struct gatt_out_conn_info_t *out_conn_info = NULL;
+               /* Read data */
+               read_val = g_memdup(&event_data->data[0], event_data->data_len);
 
-       invocation_info_t *req_info = NULL;
-       int ret = OAL_STATUS_SUCCESS;
-       char *addr;
-       char *remote_address = NULL;
+               data = g_variant_new_from_data(
+                               G_VARIANT_TYPE_BYTESTRING,
+                               read_val,
+                               event_data->data_len,
+                               TRUE, NULL, NULL);
+               /* SVC uuid */
+               svc_uuid = g_memdup(&event_data->srvc_id.id.uuid.uuid[0], uuid_len);
 
-       BT_CHECK_PARAMETER(address, return);
+               data_svc_uuid = g_variant_new_from_data(
+                               G_VARIANT_TYPE_BYTESTRING,
+                               svc_uuid,
+                               uuid_len,
+                               TRUE, NULL, NULL);
 
-       BT_INFO("+");
+               /* Char uuid */
+               char_uuid = g_memdup(&event_data->char_id.uuid.uuid[0], uuid_len);
+
+               data_char_uuid = g_variant_new_from_data(
+                               G_VARIANT_TYPE_BYTESTRING,
+                               char_uuid,
+                               uuid_len,
+                               TRUE, NULL, NULL);
+
+               /* Build Param */
+               param = g_variant_new("(isn@ayin@ayin@ay)", result,
+                               addr,
+                               16,
+                               data_svc_uuid,
+                               event_data->srvc_id.id.inst_id,
+                               16,
+                               data_char_uuid,
+                               event_data->char_id.inst_id,
+                               event_data->data_len,
+                               data);
+
+               /* Send Event */
+               _bt_send_event(BT_GATT_CLIENT_EVENT,
+                               BLUETOOTH_EVENT_GATT_CHAR_VAL_CHANGED,
+                               param);
+       } else {
+               BT_ERR("No Data!!");
+       }
+       /* Free data */
+       if (read_val)
+               g_free(read_val);
+       if (svc_uuid)
+               g_free(svc_uuid);
+       if (char_uuid)
+               g_free(char_uuid);
+       if (addr)
+               g_free(addr);
+}
+
+static void __bt_handle_client_service_changed_ind(event_gattc_service_changed_data *event_data)
+{
+       bt_gatt_service_info_list_t *svc_info_list;
+       GSList *l;
+       bt_gatt_service_info_t *svc_info;
+       GVariant *param = NULL;
+       char *address_str = NULL;
+       char *uuid_str = NULL;
+
+       svc_info_list = __bt_get_service_info_list(event_data->conn_id);
+       if (svc_info_list == NULL) {
+               BT_ERR("svc_info_list is NULL");
+               return;
+       }
+
+       if (event_data->change_type) {
+               /* Add service UUID in list */
+               svc_info = g_malloc0(sizeof(bt_gatt_service_info_t));
+               memcpy(svc_info->uuid, event_data->uuid.uuid, BLUETOOTH_UUID_HEX_MAX_LEN);
+               svc_info->inst_id = event_data->inst_id;
+               svc_info->is_primary = 1; // TODO: Need to check is_primary is required or not
+               svc_info_list->services = g_slist_append(svc_info_list->services, svc_info);
+               BT_DBG("Service created and added in Svc info list or connection ID %d", event_data->conn_id);
+       } else {
+               /* Remove service UUID in list */
+               for (l = svc_info_list->services; l != NULL; l = g_slist_next(l)) {
+                       svc_info = (bt_gatt_service_info_t *)l->data;
+                       if (svc_info == NULL)
+                               continue;
+
+                       if (!memcmp(svc_info->uuid, event_data->uuid.uuid, BLUETOOTH_UUID_HEX_MAX_LEN)) {
+                               svc_info_list->services = g_slist_remove(svc_info_list->services, svc_info);
+                               __bt_free_service_info(svc_info);
+                               break;
+                       }
+               }
+       }
+
+       address_str = g_malloc0(BT_ADDRESS_STRING_SIZE);
+       uuid_str = g_malloc0(BT_UUID_STRING_MAX);
+       _bt_convert_addr_type_to_string(address_str, event_data->address.addr);
+       _bt_uuid_to_string(&event_data->uuid, uuid_str);
+
+       param = g_variant_new("(iiss)", event_data->inst_id, event_data->change_type, address_str, uuid_str);
+
+       _bt_send_event(BT_GATT_CLIENT_EVENT,
+                       BLUETOOTH_EVENT_GATT_CLIENT_SERVICE_CHANGED,
+                       param);
+       g_free(address_str);
+       g_free(uuid_str);
+}
+
+gboolean _bt_is_remote_gatt_device_connected(bluetooth_device_address_t *address)
+{
+       char *addr;
+       struct gatt_server_info_t *conn_info =  NULL;
+       gboolean connected = FALSE;
+
+       addr = g_malloc0(BT_ADDRESS_STRING_SIZE);
+       _bt_convert_addr_type_to_string(addr,
+                       (unsigned char *)&(address->addr));
+
+       BT_DBG("Check GATT connection status of [%s]", addr);
+       /* Check if device is already in connected list */
+       conn_info = _bt_find_remote_gatt_server_info(addr);
+
+       if (conn_info) {
+               BT_DBG("Remote GATT Server device [%s] is Connected", conn_info->addr);
+               connected = TRUE;
+       } else {
+               struct gatt_client_info_t *client_info = NULL;
+
+               BT_INFO("Remote GATT Server Device [%s] is not Connected", addr);
+
+               /* Check if device is already in connected list */
+               client_info = _bt_find_remote_gatt_client_info(addr);
+
+               if (client_info) {
+                       BT_DBG("Remote Client device [%s] is Connected", client_info->addr);
+                       connected = TRUE;
+               } else {
+                       BT_INFO("Remote GATT Client Device [%s] is not Connected", addr);
+               }
+       }
+
+       g_free(addr);
+       return connected;
+}
+
+void _bt_handle_invocation_context(int function_name, void *data)
+{
+       switch (function_name) {
+       case BT_CONNECT_LE:
+               __bt_gatt_handle_pending_request_info(BLUETOOTH_ERROR_NONE, BT_CONNECT_LE,
+                               (char *)data, BT_ADDRESS_STRING_SIZE);
+               break;
+       default:
+               break;
+       }
+}
+
+int _bt_connect_le_device(bluetooth_device_address_t *address,
+               int auto_connect, int client_id)
+{
+       struct gatt_server_info_t *conn_info = NULL;
+       struct gatt_out_conn_info_t *out_conn_info = NULL;
+
+       invocation_info_t *req_info = NULL;
+       int ret = OAL_STATUS_SUCCESS;
+       char *addr;
+       char *remote_address = NULL;
+
+       BT_CHECK_PARAMETER(address, return);
 
        addr = g_malloc0(sizeof(char) * BT_ADDRESS_STRING_SIZE);
        _bt_convert_addr_type_to_string(addr, address->addr);
-       BT_INFO("GATT Client connect request for address [%s] client instance [%d]",
+       BT_DBG("GATT Client connect request for address [%s] client instance [%d]",
                        addr, client_id);
 
 
@@ -3865,7 +4280,7 @@ int _bt_connect_le_device(bluetooth_device_address_t *address,
        if (req_info) {
                remote_address = (char*)req_info->user_data;
                if (remote_address && !strcasecmp(remote_address, addr)) {/* Address matched */
-                       BT_INFO("Already Connection ongoing for same remote GATT Server address [%s]", remote_address);
+                       BT_DBG("Already Connection ongoing for same remote GATT Server address [%s]", remote_address);
                        /* Return and wait for events to be sent to all apps */
                        g_free(addr);
                        return BLUETOOTH_ERROR_IN_PROGRESS;
@@ -3873,7 +4288,7 @@ int _bt_connect_le_device(bluetooth_device_address_t *address,
        }
 
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
+       conn_info = _bt_find_remote_gatt_server_info(addr);
        if (conn_info) {
                BT_ERR("GATT Server is already connected..");
                g_free(addr);
@@ -3884,9 +4299,8 @@ int _bt_connect_le_device(bluetooth_device_address_t *address,
 
        /* Check if app sent 0 client id for connection, in such case, use default gatt client ID */
        if (client_id == 0) {
-               BT_INFO("GATT CLient connect request sent by an app without any client instance [%d]",
-                               client_id);
-               BT_INFO("Assign default GATT client id [%d]", gatt_default_client);
+               /* GATT CLient connect request sent by an app without any client instance [0] */
+               BT_DBG("Assign default GATT client id [%d]", gatt_default_client);
                client_id = gatt_default_client;
        }
 
@@ -3894,7 +4308,7 @@ int _bt_connect_le_device(bluetooth_device_address_t *address,
        ret = gattc_connect(client_id, (bt_address_t*)(address), auto_connect);
 
        if (ret != OAL_STATUS_SUCCESS) {
-               BT_ERR("ret: %d", ret);
+               BT_ERR("gattc_connect is failed. ret: %d", ret);
                g_free(addr);
                return BLUETOOTH_ERROR_INTERNAL;
        }
@@ -3916,7 +4330,7 @@ int _bt_gatt_get_primary_services(char *address)
        struct gatt_server_info_t *conn_info = NULL;
        invocation_info_t *req_info = NULL;
        int ret = OAL_STATUS_SUCCESS;
-       BT_INFO("+");
+       BT_DBG("+");
 
        /* Check if any app is already browsing primary services on the same remote GATT Server */
        req_info = _bt_get_request_info_data(BT_GATT_GET_PRIMARY_SERVICES, address);
@@ -3927,7 +4341,7 @@ int _bt_gatt_get_primary_services(char *address)
        }
 
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(address);
+       conn_info = _bt_find_remote_gatt_server_info(address);
        if (conn_info) {
                BT_INFO("GATT Server [%s] is connected, conn Id [%d]",
                                conn_info->addr, conn_info->connection_id);
@@ -3954,14 +4368,13 @@ int _bt_gatt_get_all_characteristic(bluetooth_gatt_client_svc_prop_info_t *svc)
        oal_gatt_srvc_id_t srvc_id;
        int ret = OAL_STATUS_SUCCESS;
        char *addr;
-       BT_INFO("+");
 
        /* Check if any app is already browsing characteristics of the same service on the same remote GATT Server */
        req_info = _bt_get_request_info_data_from_function_name(BT_GATT_GET_SERVICE_PROPERTIES);
        if (req_info) {
                prop = (bluetooth_gatt_client_svc_prop_info_t*)req_info->user_data;
                if (prop && !memcmp(svc->device_address.addr, prop->device_address.addr, sizeof(bluetooth_device_address_t))
-                               && memcmp(prop->svc.uuid, svc->svc.uuid, BLUETOOTH_UUID_HEX_MAX_LEN)
+                               && !memcmp(prop->svc.uuid, svc->svc.uuid, BLUETOOTH_UUID_HEX_MAX_LEN)
                                && prop->svc.instance_id == svc->svc.instance_id) {
                        BT_INFO("Already Properties browsing for Primary Service ongoing for same remote GATT Server");
                        /* Return and wait for events to be sent to all apps */
@@ -3973,9 +4386,9 @@ int _bt_gatt_get_all_characteristic(bluetooth_gatt_client_svc_prop_info_t *svc)
        _bt_convert_addr_type_to_string(addr, svc->device_address.addr);
 
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
+       conn_info = _bt_find_remote_gatt_server_info(addr);
        if (conn_info) {
-               BT_INFO("GATT Server [%s] is connected, conn Id [%d]",
+               BT_DBG("GATT Server [%s] is connected, conn Id [%d]",
                                conn_info->addr, conn_info->connection_id);
        } else {
                BT_ERR("GATT Server is not yet connected..");
@@ -4011,17 +4424,15 @@ int _bt_gatt_get_all_characteristic_properties(
 
        BT_CHECK_PARAMETER(chr, return);
 
-       BT_INFO("+");
-
        /* Check if any app is already browsing descriptors of the same char of
           particular service on the same remote GATT Server */
        req_info = _bt_get_request_info_data_from_function_name(BT_GATT_GET_CHARACTERISTIC_PROPERTIES);
        if (req_info) {
                prop = (bluetooth_gatt_client_char_prop_info_t*)req_info->user_data;
                if (prop && !memcmp(chr->device_address.addr, prop->device_address.addr, sizeof(bluetooth_device_address_t)) /* Address matched */
-                               && memcmp(chr->svc.uuid, prop->svc.uuid, BLUETOOTH_UUID_HEX_MAX_LEN) /* Service UUID matched */
+                               && !memcmp(chr->svc.uuid, prop->svc.uuid, BLUETOOTH_UUID_HEX_MAX_LEN) /* Service UUID matched */
                                && chr->svc.instance_id == prop->svc.instance_id /* Service Instance ID matched */
-                               && memcmp(chr->characteristic.uuid, prop->characteristic.uuid, BLUETOOTH_UUID_HEX_MAX_LEN) /* Characteristic UUID matched */
+                               && !memcmp(chr->characteristic.uuid, prop->characteristic.uuid, BLUETOOTH_UUID_HEX_MAX_LEN) /* Characteristic UUID matched */
                                && chr->characteristic.instance_id == prop->characteristic.instance_id) { /* Characteristic Instance ID matched */
                        BT_INFO("Already Properties browsing for Characteristic ongoing for same remote GATT Server");
                        /* Return and wait for events to be sent to all apps */
@@ -4033,9 +4444,9 @@ int _bt_gatt_get_all_characteristic_properties(
        _bt_convert_addr_type_to_string(addr, chr->device_address.addr);
 
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
+       conn_info = _bt_find_remote_gatt_server_info(addr);
        if (conn_info) {
-               BT_INFO("GATT Server [%s] is connected, conn Id [%d]",
+               BT_DBG("GATT Server [%s] is connected, conn Id [%d]",
                                conn_info->addr, conn_info->connection_id);
        } else {
                BT_ERR("GATT Server is not yet connected..");
@@ -4074,8 +4485,6 @@ int _bt_gatt_read_characteristic_value(
 
        BT_CHECK_PARAMETER(chr, return);
 
-       BT_INFO("+");
-
        /* Check if any app is already Reading characteristic of the same char of
           particular service on the same remote GATT Server */
        req_info = _bt_get_request_info_data_from_function_name(BT_GATT_READ_CHARACTERISTIC);
@@ -4096,9 +4505,9 @@ int _bt_gatt_read_characteristic_value(
        _bt_convert_addr_type_to_string(addr, chr->device_address.addr);
 
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
+       conn_info = _bt_find_remote_gatt_server_info(addr);
        if (conn_info) {
-               BT_INFO("GATT Server [%s] is connected, conn Id [%d]",
+               BT_DBG("GATT Server [%s] is connected, conn Id [%d]",
                                conn_info->addr, conn_info->connection_id);
        } else {
                BT_ERR("GATT Server is not yet connected..");
@@ -4138,8 +4547,6 @@ int _bt_gatt_read_descriptor_value(
 
        BT_CHECK_PARAMETER(desc, return);
 
-       BT_INFO("+");
-
        /* Check if any app is already Reading descriptors of the same char of
           particular service on the same remote GATT Server */
        req_info = _bt_get_request_info_data_from_function_name(BT_GATT_READ_DESCRIPTOR_VALUE);
@@ -4162,9 +4569,9 @@ int _bt_gatt_read_descriptor_value(
        _bt_convert_addr_type_to_string(addr, desc->device_address.addr);
 
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
+       conn_info = _bt_find_remote_gatt_server_info(addr);
        if (conn_info) {
-               BT_INFO("GATT Server [%s] is connected, conn Id [%d]",
+               BT_DBG("GATT Server [%s] is connected, conn Id [%d]",
                                conn_info->addr, conn_info->connection_id);
        } else {
                BT_ERR("GATT Server is not yet connected..");
@@ -4194,6 +4601,96 @@ int _bt_gatt_read_descriptor_value(
        return BLUETOOTH_ERROR_NONE;
 }
 
+/*acquire Notify*/
+int _bt_gatt_acquire_notify(bluetooth_gatt_client_char_prop_info_t *chr, int *fd, int *mtu)
+{
+       struct gatt_server_info_t *conn_info = NULL;
+       oal_gatt_srvc_id_t srvc_id;
+       oal_gatt_id_t char_id;
+       int ret = OAL_STATUS_SUCCESS;
+       char *addr;
+
+       BT_CHECK_PARAMETER(chr, return);
+
+       addr = g_malloc0(sizeof(char) * BT_ADDRESS_STRING_SIZE);
+       _bt_convert_addr_type_to_string(addr, chr->device_address.addr);
+
+       /* Check if remote GATT Server is connected or not */
+       conn_info = _bt_find_remote_gatt_server_info(addr);
+       if (conn_info) {
+               BT_DBG("GATT Server [%s] is connected, conn Id [%d]",
+                               conn_info->addr, conn_info->connection_id);
+       } else {
+               BT_ERR("GATT Server is not yet connected..");
+               g_free(addr);
+               return BLUETOOTH_ERROR_NOT_CONNECTED;
+       }
+
+       srvc_id.is_prmry = TRUE;
+       srvc_id.id.inst_id = chr->svc.instance_id;
+       memcpy(srvc_id.id.uuid.uuid, chr->svc.uuid, BLUETOOTH_UUID_HEX_MAX_LEN);
+
+       char_id.inst_id = chr->characteristic.instance_id;
+       memcpy(char_id.uuid.uuid, chr->characteristic.uuid, BLUETOOTH_UUID_HEX_MAX_LEN);
+
+               ret = gattc_acquire_notify(conn_info->connection_id, &srvc_id, &char_id, fd, mtu);
+
+       if (ret != OAL_STATUS_SUCCESS) {
+               BT_ERR("ret: %d", ret);
+               g_free(addr);
+               return BLUETOOTH_ERROR_INTERNAL;
+       }
+       BT_INFO("GATT characterstics FD [%d]  mtu[%d]", *fd, *mtu);
+       g_free(addr);
+       return BLUETOOTH_ERROR_NONE;
+}
+
+/*acquire Write*/
+int _bt_gatt_acquire_write(bluetooth_gatt_client_char_prop_info_t *chr, int *fd, int *mtu)
+{
+
+       struct gatt_server_info_t *conn_info = NULL;
+       oal_gatt_srvc_id_t srvc_id;
+       oal_gatt_id_t char_id;
+       int ret = OAL_STATUS_SUCCESS;
+       char *addr;
+
+       BT_CHECK_PARAMETER(chr, return);
+
+       addr = g_malloc0(sizeof(char) * BT_ADDRESS_STRING_SIZE);
+       _bt_convert_addr_type_to_string(addr, chr->device_address.addr);
+
+       /* Check if remote GATT Server is connected or not */
+       conn_info = _bt_find_remote_gatt_server_info(addr);
+       if (conn_info) {
+               BT_DBG("GATT Server [%s] is connected, conn Id [%d]",
+                               conn_info->addr, conn_info->connection_id);
+       } else {
+               BT_ERR("GATT Server is not yet connected..");
+               g_free(addr);
+               return BLUETOOTH_ERROR_NOT_CONNECTED;
+       }
+
+       srvc_id.is_prmry = TRUE;
+       srvc_id.id.inst_id = chr->svc.instance_id;
+       memcpy(srvc_id.id.uuid.uuid, chr->svc.uuid, BLUETOOTH_UUID_HEX_MAX_LEN);
+
+       char_id.inst_id = chr->characteristic.instance_id;
+       memcpy(char_id.uuid.uuid, chr->characteristic.uuid, BLUETOOTH_UUID_HEX_MAX_LEN);
+
+               ret = gattc_acquire_write(conn_info->connection_id, &srvc_id, &char_id,
+                                       OAL_GATT_AUTH_REQ_NONE, fd, mtu);
+       if (ret != OAL_STATUS_SUCCESS) {
+               BT_ERR("ret: %d", ret);
+               g_free(addr);
+               return BLUETOOTH_ERROR_INTERNAL;
+       }
+       BT_INFO("GATT characterstics FD [%d]  mtu [%d]", *fd, *mtu);
+       g_free(addr);
+       return BLUETOOTH_ERROR_NONE;
+
+}
+
 
 /* Write Characteristic */
 int _bt_gatt_write_characteristic_value_by_type(
@@ -4235,7 +4732,7 @@ int _bt_gatt_write_characteristic_value_by_type(
        _bt_convert_addr_type_to_string(addr, chr->device_address.addr);
 
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
+       conn_info = _bt_find_remote_gatt_server_info(addr);
        if (conn_info) {
                BT_INFO("GATT Server [%s] is connected, conn Id [%d]",
                                conn_info->addr, conn_info->connection_id);
@@ -4314,7 +4811,7 @@ int _bt_gatt_write_descriptor_value_by_type(
        _bt_convert_addr_type_to_string(addr, desc->device_address.addr);
 
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
+       conn_info = _bt_find_remote_gatt_server_info(addr);
        if (conn_info) {
                BT_INFO("GATT Server [%s] is connected, conn Id [%d]",
                                conn_info->addr, conn_info->connection_id);
@@ -4371,7 +4868,7 @@ int _bt_gatt_watch_characteristic(
        _bt_convert_addr_type_to_string(addr, chr->device_address.addr);
 
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
+       conn_info = _bt_find_remote_gatt_server_info(addr);
        if (conn_info) {
                BT_INFO("GATT Server [%s] is connected, conn Id [%d]",
                                conn_info->addr, conn_info->connection_id);
@@ -4389,11 +4886,11 @@ int _bt_gatt_watch_characteristic(
 
        /* Register or unregister Notification characteristic */
        if (is_notify)
-               ret = gattc_register_for_notification(conn_info->client_id,
+               ret = gattc_register_for_notification(conn_info->connection_id,
                                (bt_address_t*)&(chr->device_address),
                                &srvc_id, &char_id);
        else
-               ret = gattc_deregister_for_notification(conn_info->client_id,
+               ret = gattc_deregister_for_notification(conn_info->connection_id,
                                (bt_address_t*)&(chr->device_address),
                                &srvc_id, &char_id);
 
@@ -4412,6 +4909,7 @@ int _bt_disconnect_le_device(bluetooth_device_address_t *address,
                int client_id)
 {
        struct gatt_server_info_t *conn_info = NULL;
+       struct gatt_client_info_t *rem_client_conn_info = NULL;
        invocation_info_t *req_info = NULL;
        int ret = OAL_STATUS_SUCCESS;
        char *addr;
@@ -4419,8 +4917,6 @@ int _bt_disconnect_le_device(bluetooth_device_address_t *address,
 
        BT_CHECK_PARAMETER(address, return);
 
-       BT_INFO("+");
-
        addr = g_malloc0(sizeof(char) * BT_ADDRESS_STRING_SIZE);
        _bt_convert_addr_type_to_string(addr, address->addr);
        BT_INFO("GATT Client Disconnect request for address [%s]", addr);
@@ -4430,31 +4926,41 @@ int _bt_disconnect_le_device(bluetooth_device_address_t *address,
        if (req_info) {
                remote_address = (char*)req_info->user_data;
                if (remote_address && !strcasecmp(remote_address, addr)) {/* Address matched */
-                       BT_INFO("Already DisConnection ongoing for same remote GATT Server address [%s]", remote_address);
+                       BT_DBG("Already DisConnection ongoing for same remote GATT Server address [%s]", remote_address);
                        /* Return success and wait for events to be sent to all apps */
                        g_free(addr);
                        return BLUETOOTH_ERROR_IN_PROGRESS;
                }
        }
        /* Check if remote GATT Server is connected or not */
-       conn_info = __bt_find_remote_gatt_server_info(addr);
-       if (!conn_info) {
-               BT_ERR("GATT Server is not connected..");
-               g_free(addr);
-               return BLUETOOTH_ERROR_NOT_IN_OPERATION;
-       }
+       conn_info = _bt_find_remote_gatt_server_info(addr);
+       if (conn_info) {
+               /* Check if app sent 0 client id for Disconnection, in such case, use default gatt client ID */
+               if (client_id == 0) {
+                       BT_INFO("GATT CLient Disconnect request sent by an app without any client instance [%d]",
+                                       client_id);
+                       BT_INFO("Assign default GATT client id [%d]", gatt_default_client);
+                       client_id = gatt_default_client;
+               }
 
-       /* Check if app sent 0 client id for Disconnection, in such case, use default gatt client ID */
-       if (client_id == 0) {
-               BT_INFO("GATT CLient Disconnect request sent by an app without any client instance [%d]",
-                               client_id);
-               BT_INFO("Assign default GATT client id [%d]", gatt_default_client);
-               client_id = gatt_default_client;
-       }
+               BT_INFO("Disconnect remote gatt server using CLient ID [%d] Connection ID [%d]", client_id, conn_info->connection_id);
+               ret = gattc_disconnect(client_id, (bt_address_t*)(address),
+                               conn_info->connection_id);
+       } else {
+               /* check if remote client is connected */
+               rem_client_conn_info = _bt_find_remote_gatt_client_info(addr);
 
-       BT_INFO("Disconnect using CLient ID [%d] Connection ID [%d]", client_id, conn_info->connection_id);
-       ret = gattc_disconnect(client_id, (bt_address_t*)(address),
-                       conn_info->connection_id);
+               if (!rem_client_conn_info || client_id != 0) {
+                       BT_ERR("GATT device is not connected..");
+                       g_free(addr);
+                       return BLUETOOTH_ERROR_NOT_IN_OPERATION;
+               }
+
+               BT_INFO("Disconnect remote gatt client ");
+
+               ret = gatts_disconnect(rem_client_conn_info->instance_id,
+                       (bt_address_t*)(address), rem_client_conn_info->connection_id);
+       }
 
        if (ret != OAL_STATUS_SUCCESS) {
                BT_ERR("ret: %d", ret);
@@ -4472,8 +4978,8 @@ int _bt_gatt_watch_service_changed_indication(const char *sender,
        int k;
        bt_service_app_info_t *info = NULL;
 
-       BT_INFO("Enable Servic changed Indication watcher [%d] for app [%s]",
-                       is_enabled, sender);
+       BT_INFO("%s Servic changed Indication watcher for app [%s]",
+                       is_enabled ? "Enable":"Disable", sender);
 
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
                info = &numapps[k];
@@ -4481,7 +4987,7 @@ int _bt_gatt_watch_service_changed_indication(const char *sender,
                if (g_strcmp0(sender, info->sender) == 0 &&
                                memcmp(info->address.addr, address->addr,
                                        sizeof(bluetooth_device_address_t)) == 0) {
-                       BT_INFO("Found GATT client App.. UUID [%s], sender [%s]", info->uuid, info->sender);
+                       BT_DBG("Found GATT client App.. [%s], sender [%s]", info->uuid, info->sender);
                        info->is_watcher_enabled = is_enabled;
                }
        }
@@ -4491,29 +4997,218 @@ int _bt_gatt_watch_service_changed_indication(const char *sender,
 
 int _bt_unregister_gatt_client_instance(const char *sender, int client_id)
 {
-       BT_INFO("Unregister Allocated GATT CLient instance [%s] Client ID [%d]",
-                       sender, client_id);
-       int result = BLUETOOTH_ERROR_NONE;
-       int k;
+       bt_service_app_info_t *info = NULL;
+       int k, ret;
+
+       BT_DBG("Unregister Allocated GATT Client instance [%s] Client ID [%d]", sender, client_id);
 
        /* Unregister CLient instance associated with address X. It is possible that another app still
           has client_id valid for same remote address */
-       bt_service_app_info_t *info = NULL;
-
        for (k = 1; k < MAX_APPS_SUPPORTED; k++) {
                info = &numapps[k];
 
                /* Exact matching of sender */
                if (!g_strcmp0(info->sender, sender) && info->client_id == client_id) {  /* Check for only valid GATT client Instance */
-                       BT_INFO("Unregister GATT client instance [%d]", info->client_id);
-                       result = __bt_do_unregister_gatt_instance(info->client_id);
-                       if (result != BLUETOOTH_ERROR_NONE)
-                               BT_ERR("Error in unregistering GATT Client Interface");
+                       numapps[k].client_id = -1;
+                       numapps[k].is_initialized = FALSE;
+                       memset(numapps[k].sender, 0x00, sizeof(numapps[k].sender));
+                       memset(numapps[k].uuid, 0x00, sizeof(numapps[k].uuid));
+                       memset(&numapps[k].address.addr, 0x00, sizeof(bluetooth_device_address_t));
 
-                       break;
+                       /* Its a GATT Client Instance */
+                       ret = gattc_deregister(client_id);
+                       if (ret != OAL_STATUS_SUCCESS) {
+                               BT_ERR("DeAllocate GATT Client instance with stack Fail ret: %d", ret);
+                               return BLUETOOTH_ERROR_INTERNAL;
+                       } else {
+                               return BLUETOOTH_ERROR_NONE;
+                       }
                }
        }
-       return result;
+
+       return BLUETOOTH_ERROR_NOT_FOUND;
+}
+
+static void __bt_handle_client_mtu_exchange_completed(event_gattc_mtu_configured_t *event_data)
+{
+       int result = BLUETOOTH_ERROR_NONE;
+       struct gatt_server_info_t *conn_info = NULL;
+       GVariant *param = NULL;
+       guint16 mtu = 0;
+       guint8 status = 0;
+
+       conn_info = __bt_find_remote_gatt_server_info_from_conn_id(event_data->conn_id);
+       if (conn_info == NULL) {
+               BT_ERR("Cant find connection Information");
+               return;
+       }
+
+       BT_INFO("GATT Client: MTU Configured from addr [%s] status [%d] MTU size [%d]",
+                       conn_info->addr, event_data->status, event_data->mtu);
+
+       if (event_data->status != OAL_STATUS_SUCCESS)
+               result = BLUETOOTH_ERROR_INTERNAL;
+
+       BT_INFO("reply BT_REQ_ATT_MTU ");
+
+       /* DBUS Return fo BT_REQ_ATT_MTU for all the apps */
+       __bt_gatt_handle_pending_request_info(result, BT_REQ_ATT_MTU, conn_info->addr,
+                       BT_ADDRESS_STRING_SIZE);
+
+       if (result == BLUETOOTH_ERROR_NONE) {
+               BT_INFO("sending mtu event");
+
+               mtu = event_data->mtu;
+               param = g_variant_new("(isqy)",
+                               result,
+                               conn_info->addr,
+                               mtu,
+                               status);
+
+               /* Send event to BT-API */
+               _bt_send_event(BT_DEVICE_EVENT,
+                               BLUETOOTH_EVENT_GATT_ATT_MTU_CHANGED,
+                               param);
+
+               /* Update the MTU for current connection */
+               BT_INFO("Updating the MTU for current connection");
+               __bt_update_mtu_gatt_device(conn_info->addr, event_data->mtu);
+       }
+}
+
+static struct gatt_mtu_info_t *__bt_find_mtu_gatt_device(char *address)
+{
+       GSList *l = NULL;
+       struct gatt_mtu_info_t *info = NULL;
+
+       BT_INFO("+");
+
+       for (l = gatt_mtu_info_list; l != NULL; l = g_slist_next(l)) {
+               info = (struct gatt_mtu_info_t*)l->data;
+               if (info == NULL)
+                       continue;
+
+               if (!g_strcmp0(info->addr, address)) {
+                       BT_INFO("Remote GATT device found addr[%s]", info->addr);
+                       return info;
+               }
+       }
+
+       BT_INFO("Not found Remote GATT device addr[%s]", address);
+       return NULL;
+}
+
+static void __bt_remove_mtu_gatt_device(char *address)
+{
+       struct gatt_mtu_info_t *dev_info = NULL;
+
+       BT_INFO("+");
+
+       dev_info = __bt_find_mtu_gatt_device(address);
+
+       if (dev_info) {
+               BT_INFO("removing the gatt device from mtu list");
+               gatt_mtu_info_list = g_slist_remove(gatt_mtu_info_list, dev_info);
+               g_free(dev_info->addr);
+               g_free(dev_info);
+       }
+}
+
+static void __bt_add_mtu_gatt_device(char *address)
+{
+       struct gatt_mtu_info_t *dev_info = NULL;
+
+       BT_INFO("+");
+
+       dev_info = __bt_find_mtu_gatt_device(address);
+
+       if (!dev_info) {
+               BT_INFO("adding the gatt device in mtu list");
+               dev_info = g_new0(struct gatt_mtu_info_t, 1);
+               dev_info->addr = g_strdup(address);
+               dev_info->att_mtu = BT_DEFAULT_ATT_MTU;
+               gatt_mtu_info_list = g_slist_append(gatt_mtu_info_list, dev_info);
+       }
+}
+
+static void __bt_update_mtu_gatt_device(char *address, int mtu)
+{
+       struct gatt_mtu_info_t *dev_info = NULL;
+
+       BT_INFO("+");
+
+       dev_info = __bt_find_mtu_gatt_device(address);
+
+       if (dev_info) {
+               BT_INFO("Udating the mtu");
+               dev_info->att_mtu = mtu;
+       }
+}
+
+int _bt_gatt_get_data_batching_available_packets(
+               guint *available_packets)
+{
+       int ret = OAL_STATUS_SUCCESS;
+
+       BT_CHECK_PARAMETER(available_packets, return);
+
+       ret = gatt_get_data_batching_available_packets(available_packets);
+       if (ret != OAL_STATUS_SUCCESS) {
+               BT_ERR("ret: %d", ret);
+               if (ret == OAL_STATUS_NOT_SUPPORT)
+                       return BLUETOOTH_ERROR_NOT_SUPPORT;
+               return BLUETOOTH_ERROR_INTERNAL;
+       }
+
+       return BLUETOOTH_ERROR_NONE;
+}
+
+int _bt_gatt_enable_data_batching(bluetooth_device_address_t *address,
+               int packet_threshold, int timeout)
+{
+       int ret = OAL_STATUS_SUCCESS;
+       char remote_address[BT_ADDRESS_STRING_SIZE] = { 0 };
+
+       BT_CHECK_PARAMETER(address, return);
+
+       _bt_convert_addr_type_to_string(remote_address, address->addr);
+       BT_INFO("Enable GATT data batching. address[%s] packet_threshold[%d] timeout[%d]",
+                       remote_address, packet_threshold, timeout);
+
+       ret = gatt_enable_data_batching((bt_address_t*)(address), packet_threshold, timeout);
+
+       if (ret != OAL_STATUS_SUCCESS) {
+               BT_ERR("ret: %d", ret);
+               if (ret == OAL_STATUS_INVALID_PARAM)
+                       return BLUETOOTH_ERROR_INVALID_PARAM;
+               else if (ret == OAL_STATUS_NOT_SUPPORT)
+                       return BLUETOOTH_ERROR_NOT_SUPPORT;
+               return BLUETOOTH_ERROR_INTERNAL;
+       }
+
+       return BLUETOOTH_ERROR_NONE;
+}
+
+int _bt_gatt_disable_data_batching(bluetooth_device_address_t *address)
+{
+       int ret = OAL_STATUS_SUCCESS;
+       char remote_address[BT_ADDRESS_STRING_SIZE] = { 0 };
+
+       BT_CHECK_PARAMETER(address, return);
+
+       _bt_convert_addr_type_to_string(remote_address, address->addr);
+       BT_INFO("Disable GATT data batching. address[%s]", remote_address);
+
+       ret = gatt_disable_data_batching((bt_address_t*)(address));
+
+       if (ret != OAL_STATUS_SUCCESS) {
+               BT_ERR("ret: %d", ret);
+               if (ret == OAL_STATUS_NOT_SUPPORT)
+                       return BLUETOOTH_ERROR_NOT_SUPPORT;
+               return BLUETOOTH_ERROR_INTERNAL;
+       }
+
+       return BLUETOOTH_ERROR_NONE;
 }
 
 #endif