ngx_event_pipe_input_filter_pt   18 event/ngx_event_pipe.h typedef ngx_int_t (*ngx_event_pipe_input_filter_pt)(ngx_event_pipe_t *p,
ngx_event_pipe_input_filter_pt   43 event/ngx_event_pipe.h     ngx_event_pipe_input_filter_pt    input_filter;