title: Sharkssl client certificate authentication
body: <p>I am working on client certificate authentication.</p>
  <p>Tried with Nginx server as per this link;
  <a href="https://levelup.gitconnected.com/certificate-based-mutual-tls-authentication-with-nginx-57c7e693759d" rel="nofollow noreferrer">https://levelup.gitconnected.com/certificate-based-mutual-tls-authentication-with-nginx-57c7e693759d</a></p>
  <p>and found that, require to set below options in server to use client cert authentification;
  ssl_client_certificate  /etc/ssl/selfsigned/client.crt;
  ssl_verify_client       yes;</p>
  <p>I have found OpenSSL API ssl_ctx_set_verify() to set SSL ctx with SSL_VERIFY_PEER,
  but in our project we are using sharkssl.</p>
  <p>I am new to sharkssl, if anybody helping on how to use client certificate authentication
  in sharkssl or any direction that will help me a lot and is appreciable.</p>