有没有一种简单的方法可以用java程序重现tcp CLOSE_WAIT状态?
我有一个遗留的Java应用程序有这个问题,我希望能够重现它,以便我可以测试我的修复。
由于
答案 0 :(得分:8)
当另一方关闭连接但此方没有连接时,连接处于CLOSE_WAIT状态。它很容易重现:
// Client.java (will sleep in CLOSE_WAIT)
import java.io.*;
import java.net.*;
public class Client
{
public static void main(String[] args) throws Exception
{
Socket socket = new Socket(InetAddress.getByName("localhost"), 12345);
InputStream in = socket.getInputStream();
int c;
while ((c = in.read()) != -1)
{
System.out.write(c);
}
System.out.flush();
// should now be in CLOSE_WAIT
Thread.sleep(Integer.MAX_VALUE);
}
}
// Server.java (sends some data and exits)
import java.io.*;
import java.net.*;
public class Server
{
public static void main(String[] args) throws Exception
{
Socket socket = new ServerSocket(12345).accept();
OutputStream out = socket.getOutputStream();
out.write("Hello World\n".getBytes());
out.flush();
out.close();
}
}