Mercurial > hg > nginx-quic
view auto/types/uintptr_t @ 5022:1d819608ad4a
SSL: avoid calling SSL_write() with zero data size.
According to documentation, calling SSL_write() with num=0 bytes to be sent
results in undefined behavior.
We don't currently call ngx_ssl_send_chain() with empty chain and buffer.
This check handles the case of a chain with total data size that is
a multiple of NGX_SSL_BUFSIZE, and with the special buffer at the end.
In practice such cases resulted in premature connection close and critical
error "SSL_write() failed (SSL:)" in the error log.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Mon, 28 Jan 2013 15:40:25 +0000 |
parents | 62d8db8c7157 |
children | 434548349838 |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. echo $ngx_n "checking for uintptr_t ...$ngx_c" echo >> $NGX_AUTOCONF_ERR echo "checking for uintptr_t" >> $NGX_AUTOCONF_ERR found=no cat << END > $NGX_AUTOTEST.c #include <sys/types.h> $NGX_INTTYPES_H int main() { uintptr_t i = 0; return (int) i; } END ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \ -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT" eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1" if [ -x $NGX_AUTOTEST ]; then echo " uintptr_t found" found=yes else echo $ngx_n " uintptr_t not found" $ngx_c fi rm $NGX_AUTOTEST* if [ $found = no ]; then found="uint`expr 8 \* $ngx_ptr_size`_t" echo ", $found used" echo "typedef $found uintptr_t;" >> $NGX_AUTO_CONFIG_H echo "typedef $found intptr_t;" | sed -e 's/u//g' >> $NGX_AUTO_CONFIG_H fi