curl command return http/1.1 406 not acceptable error

Question

I am using below command line curl for knowing if my site supports compressing and caching

curl --head --compress http://www.mysite.com

it retur

Answer 1

In some case I had, faking the agent solved this problem, by using:

curl -A "Mozilla/4.0"

Similarly using libcurl C-API:

curl_easy_setopt(curl, CURLOPT_USERAGENT, "Mozilla/4.0");