@Nullable
    private static String initSessionId(SSLSession session) {
        final byte[] bytes = session.getId();
        if (bytes == null) {
            return null;
        }

        final StringBuilder sb = new StringBuilder();
        for (byte b : bytes) {
            String digit = Integer.toHexString(b);
            if (digit.length() < 2) {
                sb.append('0');
            }
            if (digit.length() > 2) {
                digit = digit.substring(digit.length() - 2);
            }
            sb.append(digit);
        }
        return sb.toString();
    }
Default implementation of {@link SslInfo}.

@author Rossen Stoyanchev
@since 5.0.2
spring/boot3-webflux-autoconfigure/src/main/java/com/linecorp/armeria/spring/web/reactive/DefaultSslInfo.java