19     mbedtls_printf("MBEDTLS_SSL_CLI_C and/or MBEDTLS_SSL_PROTO_DTLS and/or "  in main()
112     mbedtls_printf("\n  . Seeding the random number generator...");  in main()
118         mbedtls_printf(" failed\n  ! mbedtls_ctr_drbg_seed returned %d\n", ret);  in main()
122     mbedtls_printf(" ok\n");  in main()
127     mbedtls_printf("  . Loading the CA root certificate ...");  in main()
133         mbedtls_printf(" failed\n  !  mbedtls_x509_crt_parse returned -0x%x\n\n",  in main()
138     mbedtls_printf(" ok (%d skipped)\n", ret);  in main()
143     mbedtls_printf("  . Connecting to udp/%s/%s...", SERVER_NAME, SERVER_PORT);  in main()
148         mbedtls_printf(" failed\n  ! mbedtls_net_connect returned %d\n\n", ret);  in main()
152     mbedtls_printf(" ok\n");  in main()
157     mbedtls_printf("  . Setting up the DTLS structure...");  in main()
164         mbedtls_printf(" failed\n  ! mbedtls_ssl_config_defaults returned %d\n\n", ret);  in main()
178         mbedtls_printf(" failed\n  ! mbedtls_ssl_setup returned %d\n\n", ret);  in main()
183         mbedtls_printf(" failed\n  ! mbedtls_ssl_set_hostname returned %d\n\n", ret);  in main()
193     mbedtls_printf(" ok\n");  in main()
198     mbedtls_printf("  . Performing the DTLS handshake...");  in main()
207         mbedtls_printf(" failed\n  ! mbedtls_ssl_handshake returned -0x%x\n\n",  in main()
212     mbedtls_printf(" ok\n");  in main()
217     mbedtls_printf("  . Verifying peer X.509 certificate...");  in main()
227         mbedtls_printf(" failed\n");  in main()
232         mbedtls_printf("%s\n", vrfy_buf);  in main()
235         mbedtls_printf(" ok\n");  in main()
242     mbedtls_printf("  > Write to server:");  in main()
253         mbedtls_printf(" failed\n  ! mbedtls_ssl_write returned %d\n\n", ret);  in main()
258     mbedtls_printf(" %d bytes written\n\n%s\n\n", len, MESSAGE);  in main()
263     mbedtls_printf("  < Read from server:");  in main()
277                 mbedtls_printf(" timeout\n\n");  in main()
284                 mbedtls_printf(" connection was closed gracefully\n");  in main()
288                 mbedtls_printf(" mbedtls_ssl_read returned -0x%x\n\n", (unsigned int) -ret);  in main()
294     mbedtls_printf(" %d bytes read\n\n%s\n\n", len, buf);  in main()
300     mbedtls_printf("  . Closing the connection...");  in main()
308     mbedtls_printf(" done\n");  in main()
319         mbedtls_printf("Last error was: %d - %s\n\n", ret, error_buf);  in main()