使用 Java 7 NIO.2 多播客户端的示例是什么样的?我只能在多播频道文档中找到一半的示例。
这个例子有效。请注意,DatagramChannel.join()
需要NetworkInterface
才能工作。
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
}
}