76     int                    app_fd;               //fd from app's side  member
256     if (sock->app_fd != -1) {  in btsock_l2cap_free_l()
257         close(sock->app_fd);  in btsock_l2cap_free_l()
319     sock->app_fd = fds[1];  in btsock_l2cap_alloc_l()
490                 " connection", accept_rs->app_fd);  in on_srv_l2cap_psm_connect_l()
493                 accept_rs->app_fd, p_open->tx_mtu);  in on_srv_l2cap_psm_connect_l()
494         accept_rs->app_fd = -1; // The fd is closed after sent to app in send_app_connect_signal()  in on_srv_l2cap_psm_connect_l()
533                 " connection", accept_rs->app_fd);  in on_srv_l2cap_le_connect_l()
536                 accept_rs->app_fd, p_open->tx_mtu);  in on_srv_l2cap_le_connect_l()
537         accept_rs->app_fd = -1; //the fd is closed after sent to app  in on_srv_l2cap_le_connect_l()
966         *sock_fd = sock->app_fd;  in btsock_l2cap_listen_or_connect()
970         sock->app_fd = -1;  /*This leaks the file descriptor. The FD should be closed in  in btsock_l2cap_listen_or_connect()