User Data News Protocol (UDP) Describes User Datasters Agreement is a protocol that defines a computer communication that is used to provide package exchange in an interconnected network environment. This protocol defaults that the Internet Protocol (IP) is its underlying protocol. This agreement provides the easiest protocol mechanism to send information to another user program. This protocol is operational, not submitted and replicated. If the application requires reliable data transfer, the Transmission Control Protocol (TCP) should be used. The dataset format is as follows: The user data header format domain source port is an optional domain. When it makes sense, it refers to the port of the sending process, which is assumed that if there is no other information, the return information should be forward? Local transmission. If it is not used, it is filled in this domain. The destination port is meaningful when there is a specific destination network address. The length refers to an octal representation of this user data report length. (This indicates that the smallest data report length is 8.) The check code has 16 bits, which is to reflect on and re-reflect on the number of IP headers, UDP headers, and data. The header is conceptually, before the UDP header information, it includes an active address, destination address, protocol and UDP length used. These information make information cannot be received incorrectly. This verification process is consistent with the process used in TCP. If the calculated check code is zero, it will be sent alloy. The full check value means that the sender does not produce a check code. The user interface user interface should allow the new receiving port to be created, and the receiving operation of the receiving port is: Returns an octal number indicated source port and source address, allowing the datagram to send, specify data, source, and destination ports, and destination address. The IP layer interface UDP module must be able to determine the network address of the source and the target, and must be able to know the protocol used from the header. One possible interface mode is to return the entire datagram, including the header returned by the receiving operation. Such an interface should also allow UDP to transmit a full-headed data report for the IP to transmit. The consistency is determined by IP and the check code is calculated. The most important use of the protocol application This protocol is the Internet Name Server and Small File Transfer Protocol. When the protocol number is used in IP, its protocol number is 17 (21 in octatics). TCP Protocol Profile TCP / IP Protocol Getting Started TCP Protocol Specification IP Protocol Specification
