不使用JMeter等压力测试软件,怎么使用java代码测试serversocket的最大可连接数?
服务器是利用serversocket,每次接收到一个socket,就提交给线程池,以下是客户端的代码
package Client;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
public class Client {
public static void main(String[] args) {
initFile("test.txt");
initFile("time.txt");
ExecutorService pool = Executors.newFixedThreadPool(1000);
for (int i = 0; i < 3000; i++) {
pool.submit(new Thread() {
@Override
public void run() {
sendSocket();
}
});
}
pool.shutdown();
}
public static void initFile(String fileName) {
File file = new File(fileName);
if (file.exists())
file.delete();
}
public static void sendSocket() {
Socket socket = null;
try {
socket = new Socket("127.0.0.1", 14);
long startTime = System.currentTimeMillis();
BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String string = "";
String line;
while ((line = reader.readLine()) != null) {
string += line;
}
string += "\r\n";
long endTime = System.currentTimeMillis();
FileOutputStream fos = new FileOutputStream("test.txt", true);
fos.write(string.getBytes());
fos.flush();
fos.close();
fos = new FileOutputStream("time.txt", true);
String time = (endTime - startTime) + "ms\r\n";
fos.write(time.getBytes());
fos.flush();
fos.close();
} catch (UnknownHostException e) {
System.out.println("UnknownHostException");
} catch (IOException e) {
System.out.println("IOException1");
} finally {
if (socket != null)
try {
socket.close();
} catch (IOException e) {
System.out.println("IOException2");
}
}
}
}
发现客户端数量为3000的时候就会打印IOEXCEPTION1,但是服务器那边却没有崩溃。到底该怎么测试最大可连接数呢?