Added r->response_sent flag. The flag indicates that the entire response was sent to the socket up to the last_buf flag. The flag is only usable for protocol implementations that call ngx_http_write_filter() from header filter, such as HTTP/1.x and HTTP/3.

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


# aCC: HP ANSI C++ B3910B A.03.55.02

# C89 mode

CFLAGS="$CFLAGS -Ae"
CC_TEST_FLAGS="-Ae"

PCRE_OPT="$PCRE_OPT -Ae"
ZLIB_OPT="$ZLIB_OPT -Ae"