Type Definition libnghttp2_sys::nghttp2_on_invalid_frame_recv_callback

pub type nghttp2_on_invalid_frame_recv_callback = Option<unsafe extern "C" fn(session: *mut nghttp2_session, frame: *const nghttp2_frame, lib_error_code: c_int, user_data: *mut c_void) -> c_int>;

@functypedef

Callback function invoked by nghttp2_session_recv() and nghttp2_session_mem_recv() when an invalid non-DATA frame is received. The error is indicated by the |lib_error_code|, which is one of the values defined in :type:nghttp2_error. When this callback function is invoked, the library automatically submits either RST_STREAM or GOAWAY frame. The |user_data| pointer is the third argument passed in to the call to nghttp2_session_client_new() or nghttp2_session_server_new().

If frame is HEADERS or PUSH_PROMISE, the nva and nvlen member of their data structure are always NULL and 0 respectively.

The implementation of this function must return 0 if it succeeds. If nonzero is returned, it is treated as fatal error and nghttp2_session_recv() and nghttp2_session_mem_recv() functions immediately return :enum:NGHTTP2_ERR_CALLBACK_FAILURE.

To set this callback to :type:nghttp2_session_callbacks, use nghttp2_session_callbacks_set_on_invalid_frame_recv_callback().