\def MBEDTLS_SSL_EARLY_DATA Enable support for RFC 8446 TLS 1.3 early data. Requires: MBEDTLS_SSL_SESSION_TICKETS and either MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ENABLED or MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL_ENABLED Comment this to disable support for early data. If MBEDTLS_SSL_PROTO_TLS1_3 is not enabled, this option does not have any effect on the build. This feature is experimental, not completed and thus not ready for production. \def MBEDTLS_SSL_MAX_EARLY_DATA_SIZE The default maximum amount of 0-RTT data. See the documentation of \c mbedtls_ssl_tls13_conf_max_early_data_size() for more information. It must be positive and smaller than UINT32_MAX. If MBEDTLS_SSL_EARLY_DATA is not defined, this default value does not have any impact on the build. This feature is experimental, not completed and thus not ready for production.