ngx_output_chain_filter_pt   72 core/ngx_buf.h typedef ngx_int_t (*ngx_output_chain_filter_pt)(void *ctx, ngx_chain_t *in);
ngx_output_chain_filter_pt  105 core/ngx_buf.h     ngx_output_chain_filter_pt   output_filter;
ngx_output_chain_filter_pt  117 http/ngx_http_copy_filter_module.c         ctx->output_filter = (ngx_output_chain_filter_pt) ngx_http_next_filter;