nghttp2_session_callbacks_set_on_frame_not_send_callback ======================================================== Synopsis -------- *#include <nghttp2/nghttp2.h>* .. function:: void nghttp2_session_callbacks_set_on_frame_not_send_callback( nghttp2_session_callbacks *cbs, nghttp2_on_frame_not_send_callback on_frame_not_send_callback) Sets callback function invoked when a non-DATA frame is not sent because of an error.