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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.socket.test;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
/**
* @author Simon Thoresen Hult
*/
public class SocketTestApp {
private final static byte[] REQUEST = "foo".getBytes(StandardCharsets.UTF_8);
private final static byte[] RESPONSE = "bar".getBytes(StandardCharsets.UTF_8);
private static volatile int numRequests = 0;
public static void main(String[] args) throws IOException {
final boolean soLingerOn = Boolean.valueOf(args[0]);
final int soLingerTime = Integer.valueOf(args[1]);
final int numClients = Integer.valueOf(args[2]);
final int sleepMillis = Integer.valueOf(args[3]);
System.out.println("soLingerOn = " + soLingerOn);
System.out.println("soLingerTime = " + soLingerTime);
System.out.println("numClients = " + numClients);
System.out.println("sleepMillis = " + sleepMillis);
ServerSocket serverSocket = new ServerSocket(0);
for (int i = 0; i < numClients; ++i) {
new Client(serverSocket.getLocalPort()).start();
}
Executor workers = Executors.newFixedThreadPool(numClients);
long prev = System.currentTimeMillis();
while (true) {
long next = System.currentTimeMillis();
if (next > prev + 1000) {
System.err.println((numRequests * 1000) / (next - prev));
numRequests = 0;
prev = next;
}
final Socket clientSocket = serverSocket.accept();
clientSocket.setSoLinger(soLingerOn, soLingerTime);
workers.execute(new Runnable() {
@Override
public void run() {
try {
InputStream in = clientSocket.getInputStream();
for (byte expected : REQUEST) {
int actual = in.read();
if (actual != expected) {
throw new AssertionError("Expected '" + expected + "', got '" + actual + "'.");
}
}
Thread.sleep(sleepMillis);
OutputStream out = clientSocket.getOutputStream();
out.write(RESPONSE);
} catch (Throwable t) {
t.printStackTrace();
} finally {
try {
clientSocket.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
});
}
}
private static class Client extends Thread {
final int port;
Client(int port) throws IOException {
this.port = port;
}
@Override
public void run() {
try {
while (!isInterrupted()) {
Socket socket = new Socket("localhost", port);
OutputStream out = socket.getOutputStream();
out.write(REQUEST);
InputStream in = socket.getInputStream();
for (byte expected : RESPONSE) {
int actual = in.read();
if (actual != expected) {
throw new AssertionError("Expected '" + expected + "', got '" + actual + "'.");
}
}
socket.close();
++numRequests;
}
} catch (Throwable t) {
t.printStackTrace();
}
}
}
}
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