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What protocol is udp?

UDP is a connectionless transport layer protocol in the OSI reference model. This topic brings you articles related to what protocol udp is, and provides it to everyone for free.

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What protocol is udp? UDP is the User Data Packet Protocol, a connectionless transport layer protocol in the OSI reference model, which provides simple and unreliable transaction-oriented information transmission services. UDP is used to support network applications that need to transmit data between computers; many client/server model network applications, including network video conferencing systems, require the use of the UDP protocol.
What does UDP protocol mean? UDP is a connectionless transport layer protocol that provides a way to send data packets to the network, but does not guarantee the reliability, sequence and integrity of data packets, nor does it provide congestion control and flow control, etc. Function. Characteristics of UDP: 1. No connectivity, no need to establish a connection before sending data, data packets can be sent directly to the target host; 2. High efficiency, the header overhead is small, only 8 bytes; 3. Unreliability, It does not provide the reliability of data packets. After the data packet is sent, it will not be resent even if it is lost, nor does it guarantee the order of the data packets, etc.
How to analyze UDP protocol 1. Socket: socket: ip address + port number. In the TCP/IP protocol, it uniquely identifies a process in network communication. Sockets are used to describe a one-to-one relationship between network connections. The TCP/IP protocol stipulates that network data flow should use big-endian byte order, that is, (memory) low address high byte (data). 2. UDP_SOCKET related UDP protocol----User Datagram Protocol (non-connection oriented)---SOCK_DGRAMh represents host, n represents network, l represents 32-bit long integer, and s represents 16-bit short integer. The IPv4 address format is defined in netinet/in.h, IPv4 address: sockadd
Characteristics of UDP protocol and its header format Characteristics of UDP The UDP protocol is very simple, and it adds almost no functions to the IP layer. Let's take a look at some features of the UDP protocol: UDP is connectionless and delivers best effort. It will not notify you in advance before sending data. It just sends it and does not care whether you can receive it or not.
In the tcp/ip protocol, what kind of protocol is the udp protocol? In the TCP/IP protocol, the UDP protocol is a transmission protocol; the UDP protocol is an unreliable connectionless protocol. It is mainly used for transmissions that do not require packets to arrive in order. The inspection and sorting of packet transmission sequence are performed by the application layer. Finish.

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