anchor.diff:  -define(SLEEP, 1000).
   -define(DEFAULT_CURVE, secp256r1).
   -define(PRINT_DEPTH, 100).
  +-define(DTLS_RECBUF, 32768).
   
   %%====================================================================
   %% API
  
positive.code:             end,
      Args = maybe_force_ipv4(Args0),
      OpensslPort = portable_open_port(Exe, Args),
  
      try wait_for_openssl_server(Port, Proto) of
          ok ->
              case  ssl:connect("localhost", Port, Opts, 5000) of
  
negative.code:     CertFile = proplists:get_value(certfile, ServerOpts),
      KeyFile = proplists:get_value(keyfile, ServerOpts),
      Exe = "openssl",
      Opts0 = [{versions, [Version]}, {verify, verify_none}],
      {Proto, Opts} = case is_tls_version(Version) of
                          true  -> {tls, [{protocol,tls}|Opts0]};
                          false -> {dtls, patch_dtls_options([{protocol, dtls}|Opts0])}
                      end,
      Args0 = case Proto of
                  tls ->
  