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Upstream: fixed tcp_nopush with gRPC. With gRPC it is possible that a request sending is blocked due to flow control. Moreover, further sending might be only allowed once the backend sees all the data we've already sent. With such a backend it is required to clear the TCP_NOPUSH socket option to make sure all the data we've sent are actually delivered to the backend. As such, we now clear TCP_NOPUSH in ngx_http_upstream_send_request() also on NGX_AGAIN if c->write->ready is set. This fixes a test (which waits for all the 64k bytes as per initial window before allowing more bytes) with sendfile enabled when the body was written to a file in a different context.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 02 Jul 2018 19:03:04 +0300
parents 05c894a598ea
children 549b13cd793b
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


NGX_MAKEFILE=$NGX_OBJS/Makefile
NGX_MODULES_C=$NGX_OBJS/ngx_modules.c

NGX_AUTO_HEADERS_H=$NGX_OBJS/ngx_auto_headers.h
NGX_AUTO_CONFIG_H=$NGX_OBJS/ngx_auto_config.h

NGX_AUTOTEST=$NGX_OBJS/autotest
NGX_AUTOCONF_ERR=$NGX_OBJS/autoconf.err

# STUBs
NGX_ERR=$NGX_OBJS/autoconf.err
MAKEFILE=$NGX_OBJS/Makefile


NGX_PCH=
NGX_USE_PCH=


# check the echo's "-n" option and "\c" capability

if echo "test\c" | grep c >/dev/null; then

    if echo -n test | grep n >/dev/null; then
        ngx_n=
        ngx_c=

    else
        ngx_n=-n
        ngx_c=
    fi

else
    ngx_n=
    ngx_c='\c'
fi


# create Makefile

cat << END > Makefile

default:	build

clean:
	rm -rf Makefile $NGX_OBJS
END