Example usage for org.apache.commons.net EchoUDPClient EchoUDPClient

Introduction

In this page you can find the example usage for org.apache.commons.net EchoUDPClient EchoUDPClient.

Prototype

EchoUDPClient

Source Link

Usage

From source file:examples.echo.java

public static final void echoUDP(String host) throws IOException {
    int length, count;
    byte[] data;//  ww  w  . j  av a 2  s .co m
    String line;
    BufferedReader input;
    InetAddress address;
    EchoUDPClient client;

    input = new BufferedReader(new InputStreamReader(System.in));
    address = InetAddress.getByName(host);
    client = new EchoUDPClient();

    client.open();
    // If we don't receive an echo within 5 seconds, assume the packet is lost.
    client.setSoTimeout(5000);
    System.out.println("Ready to echo to " + host + ".");

    // Remember, there are no guarantees about the ordering of returned
    // UDP packets, so there is a chance the output may be jumbled.
    while ((line = input.readLine()) != null) {
        data = line.getBytes();
        client.send(data, address);
        count = 0;
        do {
            try {
                length = client.receive(data);
            }
            // Here we catch both SocketException and InterruptedIOException,
            // because even though the JDK 1.1 docs claim that
            // InterruptedIOException is thrown on a timeout, it seems
            // SocketException is also thrown.
            catch (SocketException e) {
                // We timed out and assume the packet is lost.
                System.err.println("SocketException: Timed out and dropped packet");
                break;
            } catch (InterruptedIOException e) {
                // We timed out and assume the packet is lost.
                System.err.println("InterruptedIOException: Timed out and dropped packet");
                break;
            }
            System.out.print(new String(data, 0, length));
            count += length;
        } while (count < data.length);

        System.out.println();
    }

    client.close();
}

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From source file:ProtocolRunner.java

public static DatagramSocketClient getUDPClientInstance(int clientType) {
   switch(clientType) {
        case 0: { // is chargen
            if(charGenUDPClient == null) {
                charGenUDPClient = new CharGenUDPClient();
            }/*  w ww . j  av  a  2 s  . c  o m*/
            return charGenUDPClient;
        }
       case 1: { // is daytime
           if(daytimeUDPClient == null) {
               daytimeUDPClient = new DaytimeUDPClient();
           }
           return daytimeUDPClient;
       }
       case 2: { // is echo
           if(echoUDPClient == null) {
               echoUDPClient = new EchoUDPClient();
           }
           return echoUDPClient;
       }
       case 3: { // is tftp
           if(tftpClient == null) {
               tftpClient = new TFTPClient();
           }
           return tftpClient;
       }
       case 4: { // is time
           if(timeUDPClient == null) {
               timeUDPClient = new TimeUDPClient();
           }
           return timeUDPClient;
       }
    }
   return null;
}

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