191 typedef struct gatt_client{  struct
194     gatt_client_state_t state;  argument
197     btstack_packet_handler_t callback;
200     btstack_packet_handler_t write_without_response_callback;
224     gatt_client_eatt_state_t eatt_state;  argument
230     uint16_t gatt_client_supported_features_handle;  argument
234     gatt_client_mtu_t mtu_state;  argument
236     uint16_t uuid16;
237     uint8_t  uuid128[16];
239     uint16_t start_group_handle;
240     uint16_t end_group_handle;
242     uint16_t query_start_handle;
243     uint16_t query_end_handle;
245     uint8_t  characteristic_properties;
246     uint16_t characteristic_start_handle;
248     uint16_t attribute_handle;
249     uint16_t attribute_offset;
250     uint16_t attribute_length;
251     uint8_t* attribute_value;
254     uint16_t    read_multiple_handle_count;
255     uint16_t  * read_multiple_handles;
257     uint16_t client_characteristic_configuration_handle;
258     uint8_t  client_characteristic_configuration_value[2];
282     gatt_client_service_state_t gatt_service_state;  argument
294 } gatt_client_t;  argument