Example usage for java.nio.channels DatagramChannel join

Introduction

In this page you can find the example usage for java.nio.channels DatagramChannel join.

Prototype

MembershipKey join(InetAddress group, NetworkInterface interf) throws IOException;

Source Link

Document

Joins a multicast group to begin receiving all datagrams sent to the group, returning a membership key.

Usage

From source file:Test.java

public static void main(String[] args) throws Exception {
    NetworkInterface networkInterface = NetworkInterface.getByName("net1");

    DatagramChannel dc = DatagramChannel.open(StandardProtocolFamily.INET);

    dc.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    dc.bind(new InetSocketAddress(8080));
    dc.setOption(StandardSocketOptions.IP_MULTICAST_IF, networkInterface);

    InetAddress group = InetAddress.getByName("180.90.4.12");
    MembershipKey key = dc.join(group, networkInterface);
}

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From source file:Main.java

public static void main(String[] args) throws Exception {
    MembershipKey key = null;//  ww  w.ja v a2s  .  c o  m
    DatagramChannel client = DatagramChannel.open(StandardProtocolFamily.INET);

    NetworkInterface interf = NetworkInterface.getByName(MULTICAST_INTERFACE_NAME);
    client.setOption(StandardSocketOptions.SO_REUSEADDR, true);
    client.bind(new InetSocketAddress(MULTICAST_PORT));
    client.setOption(StandardSocketOptions.IP_MULTICAST_IF, interf);

    InetAddress group = InetAddress.getByName(MULTICAST_IP);
    key = client.join(group, interf);

    System.out.println("Joined the   multicast  group:" + key);
    System.out.println("Waiting for a  message  from  the" + "  multicast group....");

    ByteBuffer buffer = ByteBuffer.allocate(1048);
    client.receive(buffer);
    buffer.flip();
    int limits = buffer.limit();
    byte bytes[] = new byte[limits];
    buffer.get(bytes, 0, limits);
    String msg = new String(bytes);

    System.out.format("Multicast Message:%s%n", msg);
    key.drop();
}

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