import org.apache.commons.net.telnet.SimpleOptionHandler; //导入依赖的package包/类
@Override
protected void assertConnect(String term) throws Exception {
  client.setOptionHandler(new EchoOptionHandler(false, false, true, true));
  if (binary) {
    client.setOptionHandler(new SimpleOptionHandler(0, false, false, true, true));
  }
  if (term != null) {
    client.setOptionHandler(new TerminalTypeOptionHandler(term, false, false, true, false));
  }
  client.connect("localhost", 4000);
}
 

import org.apache.commons.net.telnet.SimpleOptionHandler; //导入依赖的package包/类
@Test
public void testWillUnknownOption() throws Exception {
  server.start(TelnetHandler::new);
  client.registerNotifHandler((negotiation_code, option_code) -> {
    if (option_code == 47) {
      assertEquals(TelnetNotificationHandler.RECEIVED_DONT, negotiation_code);
      testComplete();
    }
  });
  client.setOptionHandler(new SimpleOptionHandler(47, true, false, false, false));
  client.connect("localhost", 4000);
  await();
}
 

import org.apache.commons.net.telnet.SimpleOptionHandler; //导入依赖的package包/类
@Test
public void testDoUnknownOption() throws Exception {
  server.start(TelnetHandler::new);
  client.registerNotifHandler((negotiation_code, option_code) -> {
    if (option_code == 47) {
      assertEquals(TelnetNotificationHandler.RECEIVED_WONT, negotiation_code);
      testComplete();
    }
  });
  client.setOptionHandler(new SimpleOptionHandler(47, false, true, false, false));
  client.connect("localhost", 4000);
  await();
}
 

import org.apache.commons.net.telnet.SimpleOptionHandler; //导入依赖的package包/类
@Before
public void before() throws Exception {
  vertx = Vertx.vertx();
  client = new TelnetClient();
  client.addOptionHandler(new EchoOptionHandler(false, false, true, true));
  client.addOptionHandler(new SimpleOptionHandler(0, false, false, true, true));
  client.addOptionHandler(new TerminalTypeOptionHandler("xterm-color", false, false, true, false));
}