README.md

@@ -12,16 +12,17 @@ You need Java (JRE) version 8 or later to run jnetperf.
 - Run **/opt/jnetperf/bin/jperf**, if installed from package, or as **java -jar /path/to/jnetperf.jar**
 
 ```shell
-Usage: jnetperf [-huV] [-l=SIZE] [-n=NUM] [-p=PORT] (-c=SERVER | -s)
+Usage: jnetperf [-huV] [-l=NUM] [-n=NUM] [-p=NUM] [-t=SEC] (-c=SRV | -s)
 For more information visit https://git.data.coop/nellemann/jnetperf
-  -c, --connect=SERVER   Connect to remote server.
+  -c, --connect=SRV   Connect to remote server (client).
-  -h, --help             Show this help message and exit.
+  -h, --help          Show this help message and exit.
-  -l, --pkt-len=SIZE     Packet size in bytes [default: 1432].
+  -l, --pkt-len=NUM   Packet size in bytes (client) [default: 1432].
-  -n, --pkt-num=NUM      Number of packets to send [default: 150000].
+  -n, --pkt-num=NUM   Number of packets to send (client) [default: 150000].
-  -p, --port=PORT        Network port [default: 4445].
+  -p, --port=NUM      Network port [default: 4445].
-  -s, --server           Run server and wait for client.
+  -s, --server        Run server and wait for client (server).
-  -u, --udp              Use UDP network protocol [default: false].
+  -t, --runtime=SEC   Time to run, supersedes pkt-num (client) [default: 0].
-  -V, --version          Print version information and exit.
+  -u, --udp           Use UDP network protocol [default: false].
+  -V, --version       Print version information and exit.
 ```
 
 

gradle.properties

@@ -1,3 +1,3 @@
 projectId               = jnetperf
 projectGroup            = biz.nellemann.jnetperf
-projectVersion          = 0.0.6
+projectVersion          = 0.0.8

src/main/java/biz/nellemann/jnetperf/Application.java

@@ -20,6 +20,7 @@ import picocli.CommandLine;
 import picocli.CommandLine.Command;
 
 import java.io.IOException;
+import java.util.Locale;
 import java.util.concurrent.Callable;
 
 
@@ -32,20 +33,23 @@ public class Application implements Callable<Integer> {
     RunMode runMode;
 
     static class RunMode {
-        @CommandLine.Option(names = { "-c", "--connect" }, required = true, description = "Connect to remote server.", paramLabel = "HOST")
+        @CommandLine.Option(names = { "-c", "--connect" }, required = true, description = "Connect to remote server (client).", paramLabel = "SRV")
         String remoteServer;
 
-        @CommandLine.Option(names = { "-s", "--server" }, required = true, description = "Run server and wait for client.")
+        @CommandLine.Option(names = { "-s", "--server" }, required = true, description = "Run server and wait for client (server).")
         boolean runServer = false;
     }
 
-    @CommandLine.Option(names = { "-l", "--pkt-len" }, paramLabel = "NUM", description = "Packet size in bytes [default: ${DEFAULT-VALUE}].", converter = SuffixConverter.class)
+    @CommandLine.Option(names = { "-l", "--pkt-len" }, paramLabel = "NUM", description = "Packet size in bytes (client) [default: ${DEFAULT-VALUE}].", converter = UnitSuffixConverter.class)
     int packetSize = Payload.DEFAULT_LENGTH;
 
-    @CommandLine.Option(names = { "-n", "--pkt-num" }, paramLabel = "NUM", description = "Number of packets to send [default: ${DEFAULT-VALUE}].", converter = SuffixConverter.class)
+    @CommandLine.Option(names = { "-n", "--pkt-num" }, paramLabel = "NUM", description = "Number of packets to send (client) [default: ${DEFAULT-VALUE}].", converter = UnitSuffixConverter.class)
     int packetCount = 150_000;
 
-    @CommandLine.Option(names = { "-p", "--port" }, paramLabel = "PORT", description = "Network port [default: ${DEFAULT-VALUE}].")
+    @CommandLine.Option(names = { "-t", "--runtime" }, paramLabel = "SEC", description = "Time to run, precedes pkt-num (client) [default: ${DEFAULT-VALUE}].", converter = TimeSuffixConverter.class)
+    int timeInSeconds = 0;
+
+    @CommandLine.Option(names = { "-p", "--port" }, paramLabel = "NUM", description = "Network port [default: ${DEFAULT-VALUE}].")
     int port = 4445;
 
     @CommandLine.Option(names = { "-u", "--udp" }, description = "Use UDP network protocol [default: ${DEFAULT-VALUE}].")
@@ -54,12 +58,19 @@ public class Application implements Callable<Integer> {
 
 
     @Override
-    public Integer call() throws Exception {
+    public Integer call() {
 
-        if(runMode.runServer) {
+        // Set locale to en_US to ensure correct/identical number formatting
-            runServer();
+        Locale.setDefault(new Locale("en", "US"));
-        } else if(runMode.remoteServer != null) {
+
-            runClient(runMode.remoteServer);
+        try {
+            if (runMode.runServer) {
+                runServer();
+            } else if (runMode.remoteServer != null) {
+                runClient(runMode.remoteServer);
+            }
+        } catch (IOException | InterruptedException e) {
+            System.err.println(e.getMessage());
         }
 
         return 0;
@@ -81,13 +92,14 @@ public class Application implements Callable<Integer> {
 
         if(useUdp) {
             if(packetSize > Payload.MAX_UDP_LENGTH) {
+                System.err.println("Packetsize > MAX UDP: " + packetSize);
                 packetSize = Payload.MAX_UDP_LENGTH;
             }
-            UdpClient udpClient = new UdpClient(remoteHost, port, packetSize, packetCount, 0);
+            UdpClient udpClient = new UdpClient(remoteHost, port, packetSize, packetCount, timeInSeconds);
             udpClient.start();
 
         } else {
-            TcpClient tcpClient = new TcpClient(remoteHost, port, packetSize, packetCount, 0);
+            TcpClient tcpClient = new TcpClient(remoteHost, port, packetSize, packetCount, timeInSeconds);
             tcpClient.start();
         }
     }

src/main/java/biz/nellemann/jnetperf/Payload.java

@@ -34,7 +34,7 @@ import java.util.Arrays;
 public class Payload {
 
     public final static int MIN_LENGTH = 64;
-    public final static int MAX_UDP_LENGTH = 65507;
+    public final static int MAX_UDP_LENGTH = 64000;
     public final static int DEFAULT_LENGTH = 1432;
     public final static int HEADER_LENGTH = 32;
 

src/main/java/biz/nellemann/jnetperf/Statistics.java

@@ -31,6 +31,7 @@ public class Statistics {
     private long packetsPerSec;
     private long packetsUnacked = 0;
     private int tickItererations = 0;
+    private int tickTotal = 0;
 
     private final long[] bytesPerSecAvgTmp = new long[MAX_TICKS_AVG];
     private final long[] packetsPerSecAvgTmp = new long[MAX_TICKS_AVG];
@@ -67,6 +68,7 @@ public class Statistics {
             if(tickItererations % LOG_AVG_MODULO == 0) {
                 printAverage();
             }
+            tickTotal++;
 
         }
 
@@ -121,6 +123,11 @@ public class Statistics {
     }
 
 
+    public int getRuntime() {
+        return tickTotal;
+    }
+
+
     private long getAverage(long[] array, long fallback) {
         long avg = getAverage(array);
         if(avg < 1) {

src/main/java/biz/nellemann/jnetperf/TcpClient.java

@@ -5,12 +5,13 @@ import org.slf4j.LoggerFactory;
 
 import java.io.*;
 import java.net.*;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 public class TcpClient {
 
     final Logger log = LoggerFactory.getLogger(TcpClient.class);
 
-    private Statistics statistics;
+    private final Statistics statistics;
 
     private DataOutputStream out;
     private DataInputStream in;
@@ -21,18 +22,18 @@ public class TcpClient {
     private Socket socket;
 
     private final byte[] inBuffer = new byte[Payload.DEFAULT_LENGTH];
-    private final int packetCount;
+    private final int packets;
-    private final int packetSize;
+    private final int length;
-    private final int packetTime;
+    private final int runtime;
 
 
-    public TcpClient(String hostname, int port, int size, int maxPackets, int maxTime) throws IOException {
+    public TcpClient(String hostname, int port, int length, int packets, int runtime) throws IOException {
         log.info("TcpClient() - target: {}, port: {}", hostname, port);
 
         this.port = port;
-        this.packetSize = size;
+        this.length = length;
-        this.packetCount = maxPackets;
+        this.packets = packets;
-        this.packetTime = maxTime;
+        this.runtime = runtime;
 
         address = InetAddress.getByName(hostname);
         statistics = new Statistics();
@@ -61,39 +62,53 @@ public class TcpClient {
 
     public void start() throws IOException, InterruptedException {
 
+        AtomicBoolean keepRunning = new AtomicBoolean(true);
+        Thread shutdownHook = new Thread(() -> {
+            keepRunning.set(false);
+            System.out.println("Stopping jnetperf, please wait ...");
+        });
+        Runtime.getRuntime().addShutdownHook(shutdownHook);
+
+        long sequence = 0;
         socket = new Socket(address, port);
         in = new DataInputStream(socket.getInputStream());
         out = new DataOutputStream(socket.getOutputStream());
 
-        long sequence = 0;
 
         // Send handshake
-        Payload payload = new Payload(PayloadType.HANDSHAKE.getValue(), packetSize, sequence++, packetCount);
+        Payload payload = new Payload(PayloadType.HANDSHAKE.getValue(), length, sequence++, packets);
         send(payload);
-
         payload = receive();
         if(payload.getType() != PayloadType.ACK.getValue()) {
             log.warn("No ACK!");
             return;
         }
 
-        // Data datagrams ...
+        // Send data
-        for(int i = 0; i < packetCount; i++) {
+        do {
-            payload = new Payload(PayloadType.DATA.getValue(), packetSize, sequence++, packetCount);
+            payload = new Payload(PayloadType.DATA.getValue(), length, sequence++, packets);
             send(payload);
             payload = receive();
             if(payload.getType() != PayloadType.ACK.getValue()) {
                 log.warn("No ACK!");
             }
             statistics.tick();
-        }
 
-        // End datagram
+            if (sequence > packets) {
-        //Thread.sleep(100);
+                System.out.println("Max packets reached");
-        payload = new Payload(PayloadType.END.getValue(), packetSize, sequence++, packetCount);
+                keepRunning.set(false);;
+            }
+
+            if(runtime > 0 && statistics.getRuntime() > runtime) {
+                System.out.println("Max runtime reached");
+                keepRunning.set(false);
+            }
+
+        } while (keepRunning.get());
+
+        // Send end
+        payload = new Payload(PayloadType.END.getValue(), length, sequence++, packets);
         send(payload);
-
-        // TODO: Wait for ACK
         payload = receive();
         statistics.ack();
         if(payload.getType() != PayloadType.ACK.getValue()) {

src/main/java/biz/nellemann/jnetperf/TcpServer.java

@@ -12,6 +12,7 @@ public class TcpServer extends Thread {
 
     final Logger log = LoggerFactory.getLogger(TcpServer.class);
 
+    private final int port;
     private ServerSocket socket;
     private DataInputStream in;
     private DataOutputStream out;
@@ -20,22 +21,20 @@ public class TcpServer extends Thread {
 
     public TcpServer(int port) throws IOException {
         log.info("TcpServer()");
-
+        this.port = port;
-        socket = new ServerSocket(port);
-        socket.setSoTimeout(10000);
     }
 
 
     public void run() {
 
-        boolean running = true;
-
         try {
-            while (running) {
+            while (true) {
+                socket = new ServerSocket(port);
+                socket.setSoTimeout(0); // Wait indefinitely
                 inBuffer = new byte[Payload.DEFAULT_LENGTH];
                 session();
+                socket.close();
             }
-            socket.close();
         } catch(IOException e) {
             log.error(e.getMessage());
         }
@@ -95,8 +94,7 @@ public class TcpServer extends Thread {
 
     private Payload receive() throws IOException {
         in.readFully(inBuffer);
-        Payload payload = new Payload(inBuffer);
+        return new Payload(inBuffer);
-        return payload;
     }
 
 }

src/main/java/biz/nellemann/jnetperf/TimeSuffixConverter.java

@@ -0,0 +1,42 @@
+package biz.nellemann.jnetperf;
+
+import picocli.CommandLine;
+
+import java.util.Locale;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+public class TimeSuffixConverter implements CommandLine.ITypeConverter<Integer> {
+
+    final private Pattern pattern = Pattern.compile("(\\d+)([smh])?", Pattern.CASE_INSENSITIVE);
+
+    public Integer convert(String value) {
+        int seconds = 0;
+
+        Matcher matcher = pattern.matcher(value);
+        if (matcher.find()) {
+            int number = Integer.parseInt(matcher.group(1));
+            if(matcher.group(2) != null) {  // We got the second, minute or hour suffix
+                String suffix = matcher.group(2);
+                switch (suffix.toLowerCase(Locale.ROOT)) {
+                    case "s":
+                        seconds = number;
+                        break;
+                    case "m":
+                        seconds = number * 60;
+                        break;
+                    case "h":
+                        seconds = number * 60 * 60;
+                        break;
+                    default:
+                        System.err.println("Unknown suffix: " + suffix);
+                        seconds = number;
+                }
+            } else {
+                seconds = number;
+            }
+        }
+        return seconds;
+    }
+
+}

src/main/java/biz/nellemann/jnetperf/UdpClient.java

@@ -21,6 +21,7 @@ import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.net.SocketException;
 import java.net.UnknownHostException;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -29,25 +30,25 @@ public class UdpClient {
 
     final Logger log = LoggerFactory.getLogger(UdpClient.class);
 
-    private Statistics statistics;
+    private final Statistics statistics;
 
     private final int port;
     private final InetAddress address;
     private final DatagramSocket socket;
 
     private final byte[] inBuffer = new byte[Payload.DEFAULT_LENGTH];
-    private final int packetCount;
+    private final int length;
-    private final int packetSize;
+    private final int packets;
-    private final int packeTime;
+    private final int runtime;
 
 
-    public UdpClient(String hostname, int port, int size, int maxPackets, int maxTime) throws UnknownHostException, SocketException {
+    public UdpClient(String hostname, int port, int length, int packets, int runtime) throws UnknownHostException, SocketException {
         log.info("UdpClient() - target: {}, port: {}", hostname, port);
 
         this.port = port;
-        this.packetSize = size;
+        this.length = length;
-        this.packetCount = maxPackets;
+        this.packets = packets;
-        this.packeTime = maxTime;
+        this.runtime = runtime;
 
         socket = new DatagramSocket();
         address = InetAddress.getByName(hostname);
@@ -62,7 +63,7 @@ public class UdpClient {
     }
 
     private Payload receive() throws IOException {
-        DatagramPacket packet = new DatagramPacket(inBuffer, inBuffer.length);
+        DatagramPacket packet = new DatagramPacket(inBuffer, Payload.DEFAULT_LENGTH);
         socket.receive(packet);
         return new Payload(inBuffer);
     }
@@ -75,35 +76,51 @@ public class UdpClient {
 
     public void start() throws IOException, InterruptedException {
 
+        AtomicBoolean keepRunning = new AtomicBoolean(true);
+        Thread shutdownHook = new Thread(() -> {
+            keepRunning.set(false);
+            System.out.println("Stopping jnetperf, please wait ...");
+        });
+        Runtime.getRuntime().addShutdownHook(shutdownHook);
+
         long sequence = 0;
 
         // Send handshake
-        Payload payload = new Payload(PayloadType.HANDSHAKE.getValue(), Payload.DEFAULT_LENGTH, sequence++, packetCount);
+        Payload payload = new Payload(PayloadType.HANDSHAKE.getValue(), Payload.DEFAULT_LENGTH, sequence++, packets);
         send(payload);
-
         payload = receive();
         if(payload.getType() != PayloadType.ACK.getValue()) {
             log.warn("No ACK!");
             return;
         }
 
-        // Data datagrams ...
+        // Send data
-        for(int i = 0; i < packetCount; i++) {
+        do {
-            payload = new Payload(PayloadType.DATA.getValue(), packetSize, sequence++, packetCount);
+            payload = new Payload(PayloadType.DATA.getValue(), length, sequence++, packets);
             send(payload);
             payload = receive();
             if(payload.getType() != PayloadType.ACK.getValue()) {
                 log.warn("No ACK!");
             }
             statistics.tick();
-        }
 
-        // End datagram
+            if (sequence > packets) {
+                System.out.println("Max packets reached");
+                keepRunning.set(false);
+            }
+
+            if(runtime > 0  && statistics.getRuntime() > runtime) {
+                System.out.println("Max runtime reached");
+                keepRunning.set(false);
+            }
+
+        } while (keepRunning.get());
+
+
+        // Send end
         //Thread.sleep(100);
-        payload = new Payload(PayloadType.END.getValue(), packetSize, sequence++, packetCount);
+        payload = new Payload(PayloadType.END.getValue(), length, sequence++, packets);
         send(payload);
-
-        // TODO: Wait for ACK
         payload = receive();
         statistics.ack();
         if(payload.getType() != PayloadType.ACK.getValue()) {

src/main/java/biz/nellemann/jnetperf/UdpServer.java

@@ -28,25 +28,25 @@ public class UdpServer extends Thread {
 
     final Logger log = LoggerFactory.getLogger(UdpServer.class);
 
-    private final DatagramSocket socket;
+    private final int port;
+    private DatagramSocket socket;
     private byte[] inBuffer;
 
 
-    public UdpServer(int port) throws SocketException {
+    public UdpServer(int port) {
         log.info("UdpServer()");
-        socket = new DatagramSocket(port);
+        this.port = port;
     }
 
     public void run() {
 
-        boolean running = true;
-
         try {
-            while (running) {
+            while (true) {
                 inBuffer = new byte[Payload.DEFAULT_LENGTH];
+                socket = new DatagramSocket(port);
                 session();
+                socket.close();
             }
-            socket.close();
         } catch(IOException e) {
             log.error(e.getMessage());
         }

src/main/java/biz/nellemann/jnetperf/UnitSuffixConverter.java

@@ -6,7 +6,7 @@ import java.util.Locale;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-public class SuffixConverter implements CommandLine.ITypeConverter<Integer> {
+public class UnitSuffixConverter implements CommandLine.ITypeConverter<Integer> {
 
     final private Pattern pattern = Pattern.compile("(\\d+)([kmg])?b?", Pattern.CASE_INSENSITIVE);