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The full name of UDP protocol is user datagram protocol. It is used to process data packets like TCP protocol in the network and is a connectionless protocol. In the OSI model, the fourth layer, the transport layer, is the next layer above the IP protocol. UDP has the disadvantages of not providing packet grouping, assembling and sorting packets, that is, when the message is sent, it is impossible to know whether it arrives safely and completely.我才不被吓哭的。凌梓铭和程一是从小一起长大的好朋友，他们来自两个不算完整的家庭，凌梓铭从小和二姨一起生活，程一由奶奶抚养长大，也正因如此，两个男孩在情感上相互搀扶，一同长大。进入青春期的两个人，逐渐在心理上产生了变化，尚且年少的男孩们，根本不懂什么是“爱”，他们一次次的试探彼此，却一步步的渐行渐远……Select "Creation Mode" from the options for creating the world on the game interface.Finally, I hope every photography lover can take satisfactory and exquisite photos.In the above story, it can be seen that it is a typical publishing and subscribing mode. The seller belongs to the publisher, and Xiao Hong and Xiao Ming belong to the subscriber. Subscribe to the store. As the publisher, the seller will notify Xiao Ming and Xiao Hong in turn when the shoes arrive, and use Wang Wang and other tools to publish news to them in turn.