String transportStr = transport.toString();
        int startBracket = transportStr.indexOf('[');
        int endBracket = transportStr.indexOf(',');
        if (startBracket != -1 && endBracket != -1 && endBracket > startBracket) {
            return transportStr.substring(startBracket + 1, endBracket);
        }
        // Fallback: just use address
        return transport.getRemoteAddress().getHostAddress();
    }