使用Java 7 NIO.2中的多播客户端示例是怎样的呢?在MulticastChannel文档中只找到了一半的示例。
这个例子可用。请注意,DatagramChannel.join()
需要一个NetworkInterface
才能正常工作。
NetworkInterface ni = NetworkInterface.getByInetAddress(address);
InetAddress group = InetAddress.getByName("239.255.0.1")
DatagramChannel dc = DatagramChannel.open(StandardProtocolFamily.INET)
.setOption(StandardSocketOptions.SO_REUSEADDR, true)
.bind(new InetSocketAddress(5000))
.setOption(StandardSocketOptions.IP_MULTICAST_IF, ni);
MembershipKey key = dc.join(group, ni);
ByteBuffer byteBuffer = ByteBuffer.allocate(1500);
while (true) {
if (key.isValid()) {
byteBuffer.clear();
InetSocketAddress sa = (InetSocketAddress) dc.receive(byteBuffer);
byteBuffer.flip();
System.out.println("Multicast received from " + sa.getHostString());
// TODO: Parse message
}
}