PROPFIND returns HTTP/0.0 in status lines

[rfc2822]

Doing curl -vX PROPFIND -u .... https://www.example.com/ returns

…
…
<D:response>
<D:href>/Detlef.jpg</D:href>
<D:propstat>
<D:prop>…</D:prop>
<D:status>HTTP/0.0 200 OK</D:status>             ← HTTP/0.0
</D:propstat>
</D:response>

According to RFC 4918 14.28, D:status holds a single HTTP status-line as defined in RFC 2616 6.1. Because there is not HTTP/0.0 and the examples in RFC 4918 use HTTP/1.1, I suggest that nginx-dav-ext also uses HTTP/1.1.

Current behavior causes problems with the current dav4jvm library which uses okhttp3 StatusLine, which expects the status line to start with HTTP/1..

---

Version info:

nginx version: nginx/1.18.0 (Ubuntu)
built with OpenSSL 1.1.1f  31 Mar 2020
TLS SNI support enabled
configure arguments: --with-cc-opt='-g -O2 -fdebug-prefix-map=/build/nginx-KTLRnK/nginx-1.18.0=. -fstack-protector-strong -Wformat -Werror=format-security -fPIC -Wdate-time -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -Wl,-z,relro -Wl,-z,now -fPIC' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --modules-path=/usr/lib/nginx/modules --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-compat --with-pcre-jit --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-http_v2_module --with-http_dav_module --with-http_slice_module --with-threads --with-http_gzip_static_module --without-http_browser_module --without-http_geo_module --without-http_limit_req_module --without-http_limit_conn_module --without-http_memcached_module --without-http_referer_module --without-http_split_clients_module --without-http_userid_module --add-dynamic-module=/build/nginx-KTLRnK/nginx-1.18.0/debian/modules/http-echo

dav-ext:

ii  libnginx-mod-http-dav-ext              1.18.0-0ubuntu1.2                  amd64        WebDAV missing commands support for Nginx