Event pipe: fixes for complex protocols. 1. In ngx_event_pipe_write_chain_to_temp_file() make sure to fully write all shadow buffers up to last_shadow. With this change recycled buffers cannot appear in p->out anymore. This also fixes segmentation faults observed due to ngx_event_pipe_write_chain_to_temp() not freeing any raw buffers while still returning NGX_OK. 2. In ngx_event_pipe_write_to_downstream() we now properly check for busy size as a size of buffers, not a size of data in these buffers. This fixes situations where all available buffers became busy (including segmentation faults due to this). 3. The ngx_event_pipe_free_shadow_raw_buf() function is dropped. It's incorrect and not needed.

# Copyright (C) Igor Sysoev


echo $ngx_n "checking for $ngx_lib ...$ngx_c"

cat << END >> $NGX_AUTOCONF_ERR

----------------------------------------
checking for $ngx_lib

END

ngx_found=no

cat << END > $NGX_AUTOTEST.c

$ngx_lib_incs

int main() {
    $ngx_lib_test;
    return 0;
}


eval "$CC $cc_test_flags $ngx_lib_cflags \
     -o $NGX_AUTOTEST $NGX_AUTOTEST.c $ngx_libs \
     >> $NGX_ERR 2>&1"

if [ -x $NGX_AUTOTEST ]; then
    echo " found"

    ngx_found=yes

else
    echo " not found"
fi

rm $NGX_AUTOTEST*