anchor.diff:  with TLS support.
   
   |===
  -|xref:nng_tls_close.3tls.adoc[nng_tls_close()]|close TLS connection
   |xref:nng_tls_config_alloc.3tls.adoc[nng_tls_config_alloc()]|allocate TLS configuration
   |xref:nng_tls_config_auth_mode.3tls.adoc[nng_tls_config_auth_mode()]|set authentication mode
   |xref:nng_tls_config_ca_chain.3tls.adoc[nng_tls_config_ca_chain()]|set certificate authority chain
  
positive.code: = libnng(3)
  //
  // Copyright 2019 Staysail Systems, Inc. <info@staysail.tech>
  // Copyright 2018 Capitar IT Group BV <info@capitar.com>
  // Copyright 2019 Devolutions <info@devolutions.net>
  // Copyright 2020 Dirac Research <robert.bielik@dirac.com>
  
negative.code: |xref:nng_tls_config_own_cert.3tls.adoc[nng_tls_config_own_cert()]|set own certificate and key
  |xref:nng_tls_config_free.3tls.adoc[nng_tls_config_free()]|free TLS configuration
  |xref:nng_tls_config_server_name.3tls.adoc[nng_tls_config_server_name()]|set remote server name
  |===
  
  
  