Asynchronous datagram channels and multicasting.
异步数据报通道与多播。
Notice that both datagram (packet) and stream connections are supported.
注意同时提供了对数据包(packet)和流连接的支持。
Internet Protocol (IP) provides a host-to-host packet — or datagram — delivery service.
网际协议(IP)提供“主机对主机”包(或数据报)传递服务。
The frame data area contains a datagram.
帧数据区含有一个数据体。
Creates either a stream or a datagram socket.
创建数据流或数据报套接字。
Sending a datagram is analogous to mailing someone a letter.
发送一个数据报就类似于寄给某人一封信。
RUDP is a method of reliable transfer data by UDP (user datagram protocol).
RUDP是一种基于UDP(用户数据报协议)的可靠数据传递方法。
This process is repeated until the datagram can be delivered to its destination host.
这个过程将反复进行，直到能够将数据报传递到其目的地主机为止。
Add a data transfer module including user datagram protocol and transmission control protocol.
添加数据传输模块，分别实现了用户数据报协议和传输控制协议。
Plain IP packet, or IP datagram: IP packets are used to encapsulate any of the following protocols.
普通IP包或IP数据报：IP包可用来封装以下任何协议。
Now, we open the datagram channel and set up the options for multicasting, as shown in Listing 4.
现在，打开数据报通道并设置多播选项，如清单4所示。
When a datagram is forwarded by a gateway, it decreases the value in the time to live field by one.
当数据报经过网关转发时，它就将生存时间字段中的值减一。
Protocol also handles the sending and receiving of messages using a datagram or serial port connection.
Protocol还处理使用数据报或串行端口连接的消息发送与接收。
IP provides the most basic form of datagram delivery across the boundaries of the underlying physical networks.
IP在底层物理网络的边界之间提供最基本的数据报传递形式。
The server can then send a datagram to the address and port for the client to receive, as shown in Listing 5.
服务器可以向特定地址和端口发送数据报，供客户端接收，如清单5所示。
Along its way, the datagram will get sent to Gateway G, which will in turn forward it to its destination host.
在传输过程中，数据报将被发送到网关G，而网关 G 又会将它转发到目的地主机。
To realize automatic response, a method that utilizes SNMP protocol datagram to control network devices is used.
为实现自动化的响应，本文采用了通过SNMP协议数据报去控制网络设备的方法。
With a datagram (SOCK_DGRAM) interface, no logical connection needs to exist between peers for them to communicate.
使用数据报(SOCK_DGRAM)接口时，终端之间的通信并不需要存在逻辑上的连接。
The two most popular transport layer protocols are the transmission control protocol (TCP) and the user datagram protocol (UDP)
两种最流行的传输层协议是传输控制协议（TCP）和用户数据报协议（UDP）
The receiving host is on the same subnet as the sending host, in which case the datagram will be sent directly from the sender to the receiver.
接收主机和发送主机位于同一子网，这种情况下数据报将被直接从发送方发送到接收方。
The time the datagram remains on the Internet is measured in hops, where one hop represents one gateway on the datagram's path to the destination node.
数据报在因特网上保持的时间以跳跃点(hop)衡量，其中一个跳跃点表示数据报通向目的地节点路径上的一个网关。
This paper emphasizes on the implementation of CCB and its strategy of tasks assignment, discusses the system datagram protocol related to the implementation of CCB.
本文着重讨论了总控模块的实现及其任务分配策略，简要介绍了与其实现有关的系统数据报文约定。
Let's further assume that host a is located in network 192.168.2.0, and that the attacker sends the datagram to the network broadcast address of this network instead of to a particular host.
让我们进一步假设主机a位于网络192.168.2.0，并且攻击者将该数据报发送到这个网络的网络广播地址而不是某台特定主机。
The addresses, encapsulated as source and destination in the IP datagrams header, are used to transmit the datagram to their destination, called routing. Basically, this creates two scenarios
地址（在IP数据报头中封装为源和目的地地址）用来将数据报传输到其目的地，这个过程称为路由。
Suppose Host A, whose address is 10.1.23.3 (therefore belonging to Network 10.1.0.0), wants to send a datagram to Host B, whose address is 10.2.156.34 (therefore belonging to Network 10.2.0.0).
假设主机A地址为 10.1.23.3（因此属于网络10.1.0.0），它想将数据报发送到主机B，其地址为 10.2.156.34（因此属于10.2.0.0）。
If the gateway processing a datagram determines that the time to live field in the datagram's IP header is 0, it discards the datagram and notifies the sending host with a time Exceeded Message.
如果处理数据报的网关测定该数据报i p头中的生存时间字段为0，则丢弃该数据报并用超时消息通知源主机。
A message sent on a datagram socket was larger than the internal message buffer or some other network limit, or the buffer used to receive a datagram into was smaller than the datagram itself.
一个在数据报套接字上发送的消息大于内部消息缓冲器或其他一些网络限制，或该用户用于接收数据报的缓冲器比数据报小。
Datagram distribution services for small messages and network broadcasts.
数据报分布服务，用于小消息和网络广播。
Datagram distribution services for small messages and network broadcasts.
数据报分布服务，用于小消息和网络广播。
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