126 lines
3.4 KiB
Java
126 lines
3.4 KiB
Java
package biz.nellemann.jnetperf;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import java.io.*;
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import java.net.*;
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import java.util.concurrent.atomic.AtomicBoolean;
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public class TcpClient {
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final Logger log = LoggerFactory.getLogger(TcpClient.class);
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private final Statistics statistics;
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private DataOutputStream out;
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private DataInputStream in;
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private final int port;
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private final InetAddress address;
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private Socket socket;
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private final byte[] inBuffer = new byte[Payload.DEFAULT_LENGTH];
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private final int packets;
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private final int length;
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private final int runtime;
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public TcpClient(String hostname, int port, int length, int packets, int runtime) throws IOException {
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log.info("TcpClient() - target: {}, port: {}", hostname, port);
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this.port = port;
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this.length = length;
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this.packets = packets;
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this.runtime = runtime;
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address = InetAddress.getByName(hostname);
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statistics = new Statistics();
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}
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private void send(Payload payload) throws IOException {
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out.write(payload.getPayload());
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statistics.transferPacket();
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statistics.transferBytes(payload.getLength());
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}
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private Payload receive() throws IOException {
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in.readFully(inBuffer);
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return new Payload(inBuffer);
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}
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private void close() throws IOException {
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in.close();
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out.close();
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socket.close();
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}
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public void start() throws IOException, InterruptedException {
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AtomicBoolean keepRunning = new AtomicBoolean(true);
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Thread shutdownHook = new Thread(() -> {
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keepRunning.set(false);
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System.out.println("Stopping jnetperf, please wait ...");
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});
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Runtime.getRuntime().addShutdownHook(shutdownHook);
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long sequence = 0;
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socket = new Socket(address, port);
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in = new DataInputStream(socket.getInputStream());
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out = new DataOutputStream(socket.getOutputStream());
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// Send handshake
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Payload payload = new Payload(PayloadType.HANDSHAKE.getValue(), length, sequence++, packets);
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send(payload);
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payload = receive();
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if(payload.getType() != PayloadType.ACK.getValue()) {
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log.warn("No ACK!");
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return;
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}
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// Send data
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do {
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payload = new Payload(PayloadType.DATA.getValue(), length, sequence++, packets);
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send(payload);
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payload = receive();
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if(payload.getType() != PayloadType.ACK.getValue()) {
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log.warn("No ACK!");
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}
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statistics.tick();
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if (sequence > packets) {
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System.out.println("Max packets reached");
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keepRunning.set(false);;
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}
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if(runtime > 0 && statistics.getRuntime() > runtime) {
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System.out.println("Max runtime reached");
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keepRunning.set(false);
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}
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} while (keepRunning.get());
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// Send end
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payload = new Payload(PayloadType.END.getValue(), length, sequence++, packets);
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send(payload);
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payload = receive();
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statistics.ack();
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if(payload.getType() != PayloadType.ACK.getValue()) {
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log.warn("No ACK!");
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return;
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}
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Thread.sleep(100);
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close();
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statistics.printAverage();
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statistics.printSummary();
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}
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}
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