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| | UDP (Transport) |
 | | User Datagram Protocol (UDP) is an unreliable connection-less protocol and is defined by RFC 768 and 1122. | | | This header is not transmitted as part of UDP or TCP, but is only used to help compute the checksum as a means of being sure that the data has arrived at the correct IP address. | | | For UDP and TCP checksum calculation a 12 byte pseudo header is included which contains some fields form the IP message header. |
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http://www.comptechdoc.org/independent/networking/guide/netudp.html
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| | User Datagram Protocol (UDP) |
| | A checksum is calculated using the the 16-bit one's complement of the one's complement sum of data pulled from the IP header, the UDP header, and some of the data. | | | Length is specified as a number of octets, and since it's a 16-bit value, it provides for a datagram of up to 65,535 bytes, including the header and data. | | | This data is padded with zeroes so that it is a multiple of two octets before the checksum algorithm is run. |
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http://www.inetdaemon.com/tutorials/internet/udp
(389 words)
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| | Chapter 11. UDP: User Datagram Protocol |
| | With an IP header of 20 bytes and a UDP header of 8 bytes, this leaves a maximum of 65507 bytes of user data in a UDP datagram. | | | The UDP length field is the length of the UDP header and the UDP data in bytes. | | | The IP datagram contains its total length in bytes (Figure 3.1), so the length of the UDP datagram is this total length minus the length of the IP header (which is specified by the header length field in Figure 3.1). |
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http://www.wuppy.net.ru/books/TCP_IP_Illustrated/udp_user.htm
(9148 words)
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| | User Datagram Protocol Exercise |
| | The simpler C protocol algorithms (Protocol 1-4) were implemented in Java using datagrams as the underlying protocol. | | | Protocol - Winsock1.Protocol = sckUDPProtocol - Defines the protocol as UDP. | | | Packet - The datagram information is contained in a packet that is sent or received through the WinSock1 object. |
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http://homepages.ius.edu/rwisman/b438/Html/UDPProgrammingExercise.htm
(4423 words)
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| | UDP: the User Datagram Protocol |
| | The application data occupies the data field of the UDP datagram. | | | Without performing any handshaking, UDP adds a header fields to the message and passes the resulting segment to the network layer. | | | If it doesn't receive a reply (possibly because UDP lost the query or the reply), it either tries sending the query to another nameserver, or it informs the invoking application that it can't get a reply. |
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http://www-net.cs.umass.edu/kurose/transport/UDP.html
(2201 words)
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| | RFC 3489 (rfc3489) - STUN - Simple Traversal of User Datagram Protocol (UD |
| | Applicability Statement This protocol is not a cure-all for the problems associated with NAT. | | | It is a numeric value in the range of 100 to 699 plus a textual reason phrase encoded in UTF-8, and is consistent in its code assignments and semantics with SIP [10] and HTTP [15]. | | | Examples of such protocols include almost all peer-to- peer protocols, such as multimedia communications, file sharing and games. |
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http://www.faqs.org/rfcs/rfc3489.html
(14398 words)
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| | UDP (User Datagram Protocol) (Linktionary term) |
| | The most important thing that TCP and UDP share in common is the ability to establish a host-to-host communication channel for delivering packets between processes running in two different computers. | | | That is a traffic management issue, as discussed under "Traffic Management, Shaping, and Engineering." Refer to RFC 768 (User Datagram Protocol, August 1980) and RFC 1180 (A TCP/IP Tutorial, January 1991) for more information about UDP. | | | The UDP header, pictured next, illustrates how port addressing is the primary function of UDP. |
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http://www.linktionary.com/u/udp.html
(1157 words)
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| | User Datagram Protocol from FOLDOC |
| | UDP is defined in STD 6, RFC 768. | | | As a result it is lightweight and efficient, but all error processing and retransmission must be taken care of by the application program. | | | [Postel, Jon, User Datagram Protocol, RFC 768, Network Information Center, SRI International, Menlo Park, Calif., August 1980]. |
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http://ftp.sunet.se/foldoc/foldoc.cgi?UDP
(126 words)
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| | UDP-Lite, Lightweight User Datagram Protocol |
| | If the computed checksum is 0, it is transmitted as all ones (the equivalent in one's complement arithmetic). | | | Despite this requirement, the Checksum Coverage is expressed in bytess from the beginning of the UDP-Lite header in the same way as for UDP. | | | [RFC 4019] RObust Header Compression (ROHC): Profiles for User Datagram Protocol (UDP) Lite. |
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http://www.networksorcery.com/enp/protocol/udp-lite.htm
(176 words)
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| | User Datagram Protocol Programming and Garbage Collection and You Tech Tips |
| | The packaging of datagrams when doing TCP/IP-based programming is also done for you. | | | For more information about datagrams, see the networking trail in the Java Tutorial. | | | For example, what if you don't need to guarantee the delivery of the communication, or you don't want the delay introduced with retransmission of packets, or you don't need the data to be read in the original order it was sent? |
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http://java.sun.com/developer/JDCTechTips/2004/tt0420.html
(2367 words)
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| | User Datagram Protocol (UDP) |
| | The checksum in the IP header applies only to the fields in the IP header and not the user data field; hence the Checksum field in the UDP header relates to the complete UDP datagram. | | | The Length field is a count of the total number of octets in the complete UDP datagram, including the header. | | | The UDP transmits its PDUs, known as User Datagrams, individually in the user data field of an IP datagram. |
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http://www.eeng.dcu.ie/~murphyj/tc2/dc2000/sld394.htm
(91 words)
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| | UDP (User Datagram Protocol) |
| | UDP packets, or datagrams (also known as datagrams) contain, in addition to the lower level headers, a checksum, the packet length, source and destination ports. | | | The New Data Center, Latest Edition Best Practices; from management issues to pioneer users, this issue has it all. | | | Your user name (what other users will see on the review): |
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http://www.networkworld.com/details/797.html
(687 words)
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| | User Datagram Protocol (UDP) |
| | UDP works like a postcard--messages are small and delivery is likely, but not always assured. | | | TCP/IP standard defined in RFC 768, "User Datagram Protocol (UDP)." UDP is used by some programs instead of TCP for fast, lightweight, unreliable transportation of data between | | | UDP is typically used by programs that transmit small amounts of data at one time or have real-time requirements. |
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http://www.microsoft.com/WINDOWS2000/en/advanced/help/sag_TCPIP_und_udp.htm
(468 words)
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| | User datagram protocol |
| | UDP packets (also known as datagrams) contain, in addition to the lower level headers, a UDP header, which consists of a checksum, the packet length, plus source, and destination ports. | | | The User Datagram Protocol (UDP) is one of the core Internet protocols. | | | As a stateless protocol it is often used in such applications where data must arrive quickly, and data that arrives late is worthless. |
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http://www.ebroadcast.com.au/lookup/encyclopedia/ud/UDP.html
(231 words)
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| | Linux.com - The User Datagram Protocol |
| | Of course, TCP isn't the only user protocol in TCP/IP networking. | | | It is up to the application-- NFS in this case-- to take care of this. | | | Instead, it uses a sibling protocol of TCP called UDP, or User Datagram Protocol. |
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http://www.linux.com/guides/nag/node14.shtml
(273 words)
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| | User Datagram Protocol - Introduction to TCP/IP - Developer Fusion, the UK developer community - VB, ASP, C#, .NET, PHP ... |
| | Unlike TCP, the User Datagram Protocol (UDP) does not present data as a stream of bytes, nor does it require that you establish a connection with another program in order to exchange information. | | | UDP is sometimes referred to as an unreliable protocol because when a program sends a UDP datagram over the network, there is no way for it to know that it actually arrived at it's destination. | | | User Datagram Protocol - Introduction to TCP/IP - Developer Fusion, the UK developer community - VB, ASP, C#,.NET, PHP and XML tutorials and source code |
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http://www.developerfusion.co.uk/show/28/3
(451 words)
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| | User Datagram Protocol |
| | It does not do any error checking and it has no way of recovering data that was incorrectly delivered. | | | User Datagram Protocol is an unreliable connectionless protocol. | | | It has no way of verifying that the datagram was delivered. |
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http://www.csn.ul.ie/~heathclf/fyp/fyp-interim/node6.html
(198 words)
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| | User Datagram Protocol (UDP) |
| | The User Datagram Protocol (UDP) is a connectionless Transport (host-to-host) layer protocol. | | | Because UDP doesn’t need to establish, maintain, and close connections, or control data flow, it generally outperforms TCP. | | | UDP is the Transport layer protocol used with the |
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http://www.measureup.com/testobjects/MS_NetEss/5a7770e.htm
(115 words)
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| | UDP Protocol. Description and Packet Format |
| | UDP is a simple to implement protocol because it does not require to keep track of every packet sent or received and it does not need to initiate or end a transmission. | | | UDP messages are generally faster than TCP provided that the communication link functions properly. | | | This issue is addressed by the TCP protocol. |
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http://www.netfor2.com/udp.htm
(213 words)
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| | User Datagram Protocol |
| | UDP (User Datagram Protocol) is a simple connection-less protocol for transferring datagrams in either direction between a pair of user ports. | | | The protocol simulation shows a time-sequence diagram with users A and B, protocol entities A and B that support them, and a communications medium that carries messages. | | | Data messages are simply numbered D0, D1, etc. in sequence for each user; no explicit data content is given. |
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http://www.cs.stir.ac.uk/~kjt/software/comms/jasper/UDP.html
(142 words)
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| | User Datagram Protocol - UDP |
| | Short for User Datagram Protocol and defined in RFC 768, UDP is an alternative protocol to the TCP/IP that runs on top of IP and is sometimes referred to as UDP/IP. | | | Unlike TCP/IP, UDP does not divide each transmission into packets, which allows for a faster transmission. | | | Were you able to locate the answer to your questions? |
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http://www.computerhope.com/jargon/u/udp.htm
(57 words)
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| | informationsphere.com: User Datagram Protocol |
| | A transport protocol in the Internet suite of protocols. | | | UDP, like TCP, uses IP for delivery; however, unlike TCP, UDP provides for exchange of datagrams without acknowledgements or guaranteed delivery. |
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http://www.informationsphere.com/html/93.htm
(51 words)
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| | User Datagram Protocol |
| | Can anybody tell me how to overcome buffer overrun in the UDP environment -:). |
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http://www.globalmediapro.com/av/messages/49644.html
(14 words)
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