指定向此套接字上发送多播数据报的网络接口。
Specify the network interface for outgoing multicast datagrams sent on this socket.
清单10演示主机如何使用多播数据报接收和发送消息。
Listing 10 shows how a host USES multicast datagrams to receive and send messages.
现在，打开数据报通道并设置多播选项，如清单4所示。
Now, we open the datagram channel and set up the options for multicasting, as shown in Listing 4.
可在同一端口上创建多个客户端，它们可加入多播组来接收来自服务器的数据报。
Multiple clients can also be created on the same port and joined to the multicast group to receive the datagrams sent from the server.
异步数据报通道与多播。
集群技术通常利用快速通信协议，比如用户数据报协议(user Datagram Protocol,UDP)或多播协议。
Clustering technologies often make use of a fast communication protocol, such as User Datagram protocol (UDP) or Multicast protocols.
集群技术通常利用快速通信协议，比如用户数据报协议(user Datagram Protocol,UDP)或多播协议。
Clustering technologies often make use of a fast communication protocol, such as User Datagram protocol (UDP) or Multicast protocols.
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