location /google {
    internal;
    rewrite ^/google(.*) $1 break;    # to strip the leading /google prefix in subrequests
    proxy_set_header Accept-Encoding '';   # to disable gzip compression on the backend
    proxy_pass https://www.google.com;
}

location = /t {
    content_by_lua '
        -- search for "openresty" in google over https:
        local res = ngx.location.capture("/google/search",
                                         { args = { q = "openresty" } })
        if res.status ~= 200 then
            ngx.say("failed to query google: ", res.status, ": ", res.body)
            return
        end

        -- here we just forward the Google search result page intact:
        ngx.header["Content-Type"] = "text/html; charset=UTF-8"
        ngx.say(res.body)
    ';
}