Keepalive connections now respect lingering_timeout on shutdown. During graceful shutdown keepalive connections are now closed only after at least lingering_timeout of inactivity. To do so, c->idle is only set on keepalive connections after lingering_timeout expires. This ensures that the connection close race will less likely result in connections being reset when a client sends a request at the same time when the connection is closed by ngx_close_idle_connections() during graceful shutdown.

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


if [ $PCRE != NONE -a $PCRE != NO -a $PCRE != YES ]; then
    . auto/lib/pcre/make
fi

if [ $OPENSSL != NONE -a $OPENSSL != NO -a $OPENSSL != YES ]; then
    . auto/lib/openssl/make
fi

if [ $ZLIB != NONE -a $ZLIB != NO -a $ZLIB != YES ]; then
    . auto/lib/zlib/make
fi

if [ $NGX_LIBATOMIC != NO -a $NGX_LIBATOMIC != YES ]; then
    . auto/lib/libatomic/make
fi

if [ $USE_PERL != NO ]; then
    . auto/lib/perl/make
fi