Function gio_sys::g_socket_client_connect_to_service

pub unsafe extern fn g_socket_client_connect_to_service(client: *mut GSocketClient,
                                                        domain: *const c_char,
                                                        service: *const c_char,
                                                        cancellable: *mut GCancellable,
                                                        error: *mut *mut GError)
                                                        -> *mut GSocketConnection