n6600 支持keep-alive吗？

  protected void sendRequestHeaders(OutputStream os)
        throws IOException
    {
        writeString(os, iRequestMethod);
        os.write(32);
        if(iHttpProxyHost != null)
            writeString(os, iUri.toString());
        else
        if(iUri.getQuery() != null)
        {
            writeString(os, iUri.getPath());
            os.write(63);
            writeString(os, iUri.getQuery());
        } else
        {
            writeString(os, iUri.getPath());
        }
        os.write(32);
        os.write(VERSION);
        os.write(CRLF);
        iRequestProperties.put("Connection", "close"); //默认会写成close
        writeHeaders(os, iRequestProperties);
        os.write(CRLF);
        iState = 3;
    }