Small Java speed test for the ethersex platform.

client3.java

// original script by Oliver Reimann
// <http://list.zerties.org/pipermail/ethersex-devel/attachments/20090223/36379536/client3.java>

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

class client3   {

	Socket socket = null;
	PrintWriter out = null;
	BufferedReader in = null;

	String datasend(String outText){ 
		out.println(outText); 		//		Send data over socket
		try{
			 return in.readLine(); 	//		Receive text from server
		} catch (IOException e){
			System.out.println("Read failed");
			System.exit(1);
		}
		return null;
	} 

	public void listenSocket(String HostName, int Port){
//		Create socket connection
		try{
			socket = new Socket( HostName , Port );
			out = new PrintWriter(socket.getOutputStream(), true);
			in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
		} catch (UnknownHostException e) {
			System.out.println("Unknown host: " + HostName);
			System.exit(1);
		} catch  (IOException e) {
			System.out.println("No I/O");
			System.exit(1);
		}
	}

	//=====================================================================
	public static void main(String[] args){
		int port = 2701;
		String ecmd = "adc get";
		int intmax = 100;
		
		String address = "";
		if (args.length > 0) {
			address = args[0];
		} else {
			System.err.println("No Address supplied, please give an IP address as first/single argument!");
			System.exit(1);
		}
		
		client3 conn1 = new client3();
		conn1.listenSocket(address, port);
		
		long start = System.currentTimeMillis();
		String line="";
		for (int i=0;i<intmax;i++) {
			line = conn1.datasend(ecmd);
		}
		System.out.println("ECMD sent: " + ecmd + ". Last response received: " + line);
		long elapsed = System.currentTimeMillis() - start;
		System.out.printf("time per cycle: %3.2f ms, which is equivalent to a rate of: %3.0f /s\n" ,
		    (double) elapsed/intmax,
		    (double) intmax/elapsed*1000.0 );
	}
}

make_and_test.sh

#!/bin/bash

javac client3.java
echo "OK, built client3. Now running client3."
java client3 $1