title: Getting Error "NameError: name 'TLSExtSupportedGroup' is not defined" while executing the program
body: <p>I am trying to execute the program <code>full_rsa_connection_with_application_data.py</code> given <a href="https://github.com/tintinweb/scapy-ssl_tls/blob/master/examples/full_rsa_connection_with_application_data.py" rel="nofollow noreferrer">here</a>. However, I dont know why I am getting the following error</p>
  
  <pre><code>Traceback (most recent call last):
  File "full_rsa_connection_with_application_data.py", line 21, in &lt;module&gt;
      extensions = [TLSExtension() / TLSExtECPointsFormat(),TLSExtension()/ TLSExtSupportedGroup()]
  NameError: name 'TLSExtSupportedGroup' is not defined
  </code></pre>
  
  <p>How can I proceed further?</p>