java udp

UDP and TCP use port numbers to send and receive data simultaneously for multiple applications. Data is sent out through the source port and received through the target port. Some network applications can only use reserved or registered static ports, while others can use unregistered dynamic ports. Because UDP and TCP headers use two bytes to store port numbers, the valid range of port numbers is from 0 to

When the client needs to request some data on the database server, it needs at least three datagram to establish a TCP connection, three datagram to send and confirm a small amount of data, and three to close the connection. However, if you use UDP, you only need to issue two data packets to achieve the same effect. UDP does not require the client to establish or disable connections to the server. The clien

DNS uses the TCP protocol or UDP protocol. It is recognized that DNS uses both UDP and TCP port 53, this single application protocol uses two transmission protocols at the same time in the TCP/IP stack is also an alternative. However, few people know under what circumstances DNS uses the two Protocols. First, we will briefly introduce TCP and UDP. TCP is a connec

Software download for analysis: Wireshark-win32-1.10.2.exeRead the guided Tour1. Analysis of application TCP protocol, and TCP link management2. Analyzing Application UDP protocolAnalysis requirements(1) TCP section: Learn the configuration and use of 3CDaemon FTP server Design applications to obtain TCP messages Analyze the format and content of TCP messages (analyze at least 5 messages and understand the relationship between them)

This article describes the UdpClient class as a simple way to send and receive non-connected UDP packets in synchronous blocking mode. Because UDP is a non-connected transport protocol, you do not need to establish any remote host connections before sending and receiving data. You only need to establish the default remote host option in the following way: Use the remote host name and port number as paramete

TCP/Socket learning-UDP segment format 16-bit source port number 16-bit destination port number 16-bit UDP Length 16-bit UDP test and the above eight bytes of data (if any) Case Analysis: next we will analyze a UDP-based TFTP protocol frame. Ethernet header 0000: 00 05 5d 67 d0 b1 00 05 5d 61 58 a8 08 00 IP header 0000

http://1024monkeys.wordpress.com/2014/04/01/game-servers-udp-vs-tcp/When writing online games, the question of whether to use UDP or TCP will have to be faced sooner or later.In general, you will hear people say, "Unless you're writing an action game, you're going to use TCP," or "You can use TCP in MMO games, because World of Warcraft tcp! ”Unfortunately, these views do not reflect the complexity of the pr

High-performance TCP UDP Communication Framework HP-Socket v3.2.2 officially released, high-performance tcp HP-Socket is a set of common high-performance TCP/UDP Communication frameworks, including server components, client components, and Agent components. It is widely used in TCP/UDP communication systems in various application scenarios, provides C/C ++, C #

High-performance TCP UDP Communication Framework HP-Socket v3.2.3 officially released, high-performance tcp HP-Socket is a set of common high-performance TCP/UDP Communication frameworks, including server components, client components, and Agent components. It is widely used in TCP/UDP communication systems in various application scenarios, provides C/C ++, C #,

High-performance TCP UDP Communication Framework HP-Socket v3.2.2 officially released, tcp HP-Socket is a set of common high-performance TCP/UDP Communication frameworks, including server components, client components, and Agent components. It is widely used in TCP/UDP communication systems in various application scenarios, provides C/C ++, C #, Delphi, E (easy

1. Overview Some common applications written using UDP include DNS (Domain Name System), NFS (Network File System), and SNMP (Simple Network Management Protocol) Provides typical function calls for UDP client/server programs: 2. recvfrom and sendto Functions Two functions are similar to the standard read and write Functions, but three additional parameters are required. # Include The first three parame

After the standard UDP client has opened a set of interfaces, it generally uses the sendto and recvfrom functions to send data. Recently, we can see that the ntpclient Code uses the direct method of the send function, so we have analyzed it, in the past, UDP sent data in two ways for you to choose from, by the way, UDP connect usage will be clearly explained.Meth

=====================================================Audio-visual data Processing Primer series articles:Getting started with visual audio data processing: RGB, YUV pixel data processingGetting Started with AV data processing: PCM Audio sampling data processingGetting Started with AV data processing: Analysis of video stream in H.Getting Started with AV data processing: AAC audio bitstream parsingGetting Started with AV data processing: FLV Encapsulation Format parsingGetting Started with AV dat

full-time network administrator who has less than one year of college graduation and has limited practical experience. I am often invited to help. On one occasion, many customers complained that the company's website could not be opened and that they could not view the company's information. They could not see the company's success stories. This seriously affects the communication between the customer and the company, as well as the customer's trust in the company. Diagnosed:

(inet.tostring ()); String IP=inet.gethostaddress (); String name=Inet.gethostname (); SYSTEM.OUT.PRINTLN (IP+" "+name); /*String host = inet.tostring (); string[] str = host.split ("/"); for (String s:str) {System.out.println (s); }*/ }}UDP Send SideImportjava.io.IOException;ImportJava.net.DatagramPacket;ImportJava.net.DatagramSocket;Importjava.net.InetAddress;/** Implementation of the UDP