66 lines
1.7 KiB
Java
66 lines
1.7 KiB
Java
/* Test Multicast Sockets */
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import java.net.*;
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import java.io.*;
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public class MulticastClient
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{
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public static void
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main(String[] argv) throws IOException
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{
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System.out.println("Starting multicast tests");
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System.out.println("NOTE: You need to do an 'ifconfig <interface> " +
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"multicast' or this will fail on linux");
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byte[] buf = { 'H', 'e', 'l', 'l', 'o', ',', ' ', 'W', 'o','r','l','d' };
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/* Simple Send */
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System.out.println("Test 1: Multicast send/receive test");
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try
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{
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InetAddress addr = InetAddress.getByName("234.0.0.1");
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MulticastSocket s = new MulticastSocket();
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DatagramPacket p = new DatagramPacket(buf, buf.length, addr, 3333);
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s.joinGroup(addr);
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s.send(p);
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s.close();
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}
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catch(IOException e)
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{
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System.out.println("FAILED: simple multicast send: " + e);
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}
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/* Options */
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System.out.println("Test 2: Multicast socket options");
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try
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{
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InetAddress addr;
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MulticastSocket s = new MulticastSocket();
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System.out.println("TTL = " + s.getTTL());
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System.out.println("Setting TTT to 121");
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s.setTTL((byte)12);
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System.out.println("TTL = " + s.getTTL());
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InetAddress oaddr = s.getInterface();
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System.out.println("Multicast Interface = " + oaddr);
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System.out.println("Setting interface to localhost");
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addr = InetAddress.getByName("198.211.138.177");
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s.setInterface(addr);
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System.out.println("Multicast Interface = " + s.getInterface());
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System.out.println("Setting interface to " + oaddr);
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s.setInterface(oaddr);
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System.out.println("Multicast Interface = " + s.getInterface());
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}
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catch(IOException e)
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{
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System.out.println("FAILED: multicast options: " + e);
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}
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}
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}
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