NGX_HEADERS        30 os/unix/ngx_darwin_sendfile_chain.c #define NGX_HEADERS   64
NGX_HEADERS        33 os/unix/ngx_darwin_sendfile_chain.c #define NGX_HEADERS   IOV_MAX
NGX_HEADERS        32 os/unix/ngx_freebsd_sendfile_chain.c #define NGX_HEADERS   64
NGX_HEADERS        35 os/unix/ngx_freebsd_sendfile_chain.c #define NGX_HEADERS   IOV_MAX
NGX_HEADERS        30 os/unix/ngx_linux_sendfile_chain.c #define NGX_HEADERS  64
NGX_HEADERS        32 os/unix/ngx_linux_sendfile_chain.c #define NGX_HEADERS  IOV_MAX