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Upstream: flush low-level buffers on write retry.
If the data to write is bigger than what the socket can send, and the
reminder is smaller than NGX_SSL_BUFSIZE, then SSL_write() fails with
SSL_ERROR_WANT_WRITE. The reminder of payload however is successfully
copied to the low-level buffer and all the output chain buffers are
flushed. This means that retry logic doesn't work because
ngx_http_upstream_process_non_buffered_request() checks only if there's
anything in the output chain buffers and ignores the fact that something
may be buffered in low-level parts of the stack.
Signed-off-by: Patryk Lesiewicz <patryk@google.com>
author | Patryk Lesiewicz <patryk@google.com> |
---|---|
date | Fri, 01 Dec 2017 15:59:14 -0800 |
parents | a616bdc38645 |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. echo $ngx_n "checking for $ngx_include ...$ngx_c" cat << END >> $NGX_AUTOCONF_ERR ---------------------------------------- checking for $ngx_include END ngx_found=no cat << END > $NGX_AUTOTEST.c $NGX_INCLUDE_SYS_PARAM_H #include <$ngx_include> int main(void) { return 0; } END ngx_test="$CC -o $NGX_AUTOTEST $NGX_AUTOTEST.c" eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1" if [ -x $NGX_AUTOTEST ]; then ngx_found=yes echo " found" ngx_name=`echo $ngx_include \ | tr abcdefghijklmnopqrstuvwxyz/. ABCDEFGHIJKLMNOPQRSTUVWXYZ__` have=NGX_HAVE_$ngx_name . auto/have_headers eval "NGX_INCLUDE_$ngx_name='#include <$ngx_include>'" else echo " not found" echo "----------" >> $NGX_AUTOCONF_ERR cat $NGX_AUTOTEST.c >> $NGX_AUTOCONF_ERR echo "----------" >> $NGX_AUTOCONF_ERR echo $ngx_test >> $NGX_AUTOCONF_ERR echo "----------" >> $NGX_AUTOCONF_ERR fi rm -rf $NGX_AUTOTEST*