NGX_TRAILERS       31 os/unix/ngx_darwin_sendfile_chain.c #define NGX_TRAILERS  64
NGX_TRAILERS       34 os/unix/ngx_darwin_sendfile_chain.c #define NGX_TRAILERS  IOV_MAX
NGX_TRAILERS       33 os/unix/ngx_freebsd_sendfile_chain.c #define NGX_TRAILERS  64
NGX_TRAILERS       36 os/unix/ngx_freebsd_sendfile_chain.c #define NGX_TRAILERS  IOV_MAX