network protocol testing

Basic conceptsA set of rules, standards, or conventions established by network protocols for data exchange in a computer network.ElementsThe network protocol consists of three elements:(1)Semantics。 Semantics is the interpretation of the meaning of each part of the control information. It specifies what kind of control information needs to be emitted, as well as

false; intIDX = Ipsection.indexof ('-'); String[] SIPs= ipsection.substring (0, IDX). split ("\ \")); String[] Sipe= ipsection.substring (idx + 1). split ("\ \")); String[] Sipt= Ip.split ("\ \.")); LongIPS = 0L, Ipe = 0L, IPT = 0L; for(inti = 0; I i) {IPs= IPs Integer.parseint (Sips[i]); Ipe= Ipe Integer.parseint (Sipe[i]); IPT= IPT Integer.parseint (Sipt[i]); } if(IPs >ipe) { Longt =IPs; IPs=Ipe; Ipe=T; } returnIPs Ipe; } Public Static voidMain (string[] ar

Http://www.cnblogs.com/zmkeil/archive/2013/05/01/3053545.htmlThis title is more tangled, the previously known PPPoE as the underlying carrier of the PPP protocol, and in fact it is a complete protocol, but its implementation is relatively simple, it is easy to understand how the Linux network stack implementation.1. General statementThe

First, the network traffic is observed.The behavior of observing network traffic is called sniffing or packet analysis.1, sniff hardware.Capturing packets from the iOS emulator does not require special hardware or network configuration. If you need to capture these packets, you can use sniffer software to listen for loopback devices or interfaces for connecting t

NetBIOS protocolNote: NetWork Basic Input/Output System (Basic NetWork Input/Output System) is a small LAN developed by IBM and mainly used for dozens of computers. The NetBIOS protocol is an application programming interface (API) that can be used by a program on the LAN. It provides a unified command set for the program to request low-level services, it serves

Computer network refers to the different geographic locations of multiple computers with independent functions and their external devices, through the communication lines connected together,Under the management and coordination of network operating system, network management software and network communication

First, the introduction Today's era is the network era, the end of the 20th century IP network, with unprecedented speed of development to create a miracle in the history of human science and technology, and greatly replace the existing more than 100 years of circuit switching network trend. However, from the point of view of telecommunication

network analysis system with the Division to the efficient management of enterprise intranet. First, the division to analyze the expert introduction: The network analysis system is a network management scheme which allows network managers to solve the problem of network,

Core Network n.s0003 User Identity Module n.s0004 WIN Phase 2-triggers for preferred Language, Advice of Charge, rejection of undesired annoying Cal n.s0005 Cellular Radiotelecommunications Intersystem Operations n.s0007 DCCH (Clarification of Audit order with forced re-registration in pre-tia/eia-136-a implementation n.s0008 Circuit Mode Services n.s0009 I

1 Network Architectureb/S Architecture: Browser/serverWeb site (performance on the server)C/S Architecture: Client/server QQ Fast broadcast big company game client (performance depends on your computer)WindowMacDNS: The domain name resolution system sometimes appears QQ can be used by the website can not access to reset mobile DNS1.1. HTTP Protocol http/www.itsource.cn1,HTTP is Hypertext Transfer

[Original] Microsoft network protocol data analysis tool Microsoft Network Monitor I. Official Website: Microsoft Network Monitor Official Website: http://www.microsoft.com/en-us/download/details.aspx? Id = 4865 II. Introduction Microsoft Network Monitor is a

Network and network protocol 1: Network 1. Basic concepts of communication two objects transmit information through a certain medium. 2. Signals and communication signals: convert data and signals into electronic signals, it is transmitted in the form of electromagnetic waves. Broadband: signals can be seen as the synt

Because of the network, and file system, read and write data interface compared to use the network to send and receive data interface The most abstract concept is the socket. Network Transceiver Interface is a set of BSD defined interface, file system is open and close of the corresponding. The first thing to understand is the initialization of the

each machine to apply for a private IP, build a router inside, to do the location of the intranet IP address.The emergence of private IP has greatly solved the problem of IP waste, so we can see a lot of such as 192.168.xx in the daily IP, these IP are only LAN internal IP, will not waste IP address.As a result, RFC1918 specifies the private IP address specification for the local area network: 10.*, the front 8 is the

TCP: TCP/IP creates a connection through three handshakes. Three packets in this process are SYN, SYN/ack, and ack. The first step is to find the first SYN Packet sent from the PC to the network server, which indicates the start of TCP three-way handshake. If you cannot find the first Syn packet, selectEdit-> Find PacketMenu options. Select display filter and enter TCP. Flags. A flag list is displayed for selection. Select the appropriate flag, TCP. F

mechanism of TCP, when the data is passed, if the network quality is not good, it will be easy to drop packets.Based on the pros and cons above, then:When should you use TCP:When the quality of the network communication requirements, such as: the entire data to be accurate to the other side, which is often used for some reliable applications, such as HTTP, HTTPS, FTP, such as the transfer of files

Raknet is a C + + network library based on UDP network transport protocol that allows programmers to implement efficient network transport services in their own programs. It is usually used for games, but it can also be used for other Projects.Raknet has the following benefits: High performance on the same com

At present, the application of IP network routers is still very extensive, and the market demand is also very high, so I have studied the Security and equipment testing of IP network routers. Here I will share with you, I hope it will be useful to you. Today's era is the network era. The IP

*) RequestQueue: (nsoperationqueue*) queueCompletionhandler: (void (^) (nsurlresponse* response, nsdata* data, nserror* connectionerror)) handler;* Proxy method (async)[Nsurlconnection connectionwithrequest:request delegate:self];[[Nsurlconnection alloc] initwithrequest:request delegate:self];[[Nsurlconnection alloc] initwithrequest:request delegate:self Startimmediately:yes];Nsurlconnection *conn = [[Nsurlconnection alloc] initwithrequest:request delegate:self Startimmediately:no];[Conn start];

network and security manufacturers' devices can really meet their work needs? How do network and security device vendors know the performance that their products can deliver? The answer is all in the stress test. Ideal stress testing tools need to respond quickly to new challenges, assess the running status of network