network protocol testing

Wireshark packet capture analysis-network protocol Wireshark is currently the most popular packet capture tool. It can run in windows, Linux, and Mac OS X operating systems, and provides a friendly graphical interface. Wireshark also provides a powerful data packet capture function. It can capture the network data packets required by users in various ways. Howeve

Before I begin, I'd like to describe what this so-called communication program is all about. The communication program is similar to a weak version of QQ, login needs to register, after successful login, you can achieve instant communication, group chat, private chat, but also can be transmitted documents. Let's get to the last picture Server side: Client Login: Client main interface: The so-called real-time communication program, that is, the use of TCP and UDP transmission

The performance indicators of network products are mainly proposed in rfc2544 and rfc3511.It mainly includes throughput, latency, back-to-back, packet loss rate, new link per second, transaction processing per second, valid throughput (HTTP throughput), and maximum concurrency. Throughput, latency, back-to-back, and packet loss rate are defined in rfc2544 and belong to 2-3 tests. The UDP data type is used in the tests. The other tests are defined in r

Introduction: X-Forwarded-For in Http network protocol I always think that for those who are engaged in Web Front-end development, HTTP and other common network knowledge are essential. On the one hand, a lot of front-end work, such as Web performance optimization, most of the rules are directly matched with the features of HTTP, HTTPS, SPDY, TCP and other proto

What is the difference between the Linux network protocol stack and the network protocol in Windows? We also need to look at the specific content. Next, let's take a brief look at its concept, structure, and relevant explanations. Hope to help you. Linux network

lifecycle of TcpConnection? Since Client Connection is dynamically created and destroyed, it is entirely determined by the customer to generate and destroy it. How can we ensure that the TcpConnection object is still alive when the backend wants to send data to it? The solution is to use reference counting. Of course, you don't need to write it yourself. Use boost: shared_ptr. TcpConnection is the only object in muduo that uses shared_ptr by default to manage the life cycle, which is determined

The Network is a complex system, and many technologies exist together, and each technology follows a protocol. Dynamic Routing Protocols play an important role in network communication. Interconnect Networks use routes to send data from one network to another. In computer networks, the

Because of the speed and reliability achieved by 802.11n technology, many companies are starting to use a more bandwidth-enabled wireless LAN to support new mobile services. But this change requires more complex and reliable WLAN testing to verify the security, connectivity, and performance of the network. Companies can no longer need to use labor-intensive tools to check signal strength, server accessibi

Border Gateway Protocol (BGP) is an Internet routing Protocol. BGP itself is not too complex, but those first involved in this field may be unfamiliar with this concept hidden behind Autonomous System routing. We hope that you can use this article to briefly understand the working principle of BGP and the problems it produces and can solve. Through the last lecture on Internet routing, you should realize th

Network ProtocolIt is defined from a professional perspective as an agreement that computers must abide by when implementing communications in the network, that is, communication protocols. It mainly sets out the information transmission rate, transmission code, code structure, transmission control steps, error control, and other standards. We will organize these articles to form a complete set of articles,

The transmission of the postman and the Post Office (network protocol overview) signals must always comply with certain protocols ). For example, the Great Wall is filled with Wolf smoke because the physical signal of the wolf smoke has been preset to represent the abstract signal of "enemy intrusion. Such a "Wolf smoke = enemy intrusion" is a simple protocol. Th

After the installation of network hardware and network protocol, we generally have to do the TCP/IP protocol testing, then how to test is a more comprehensive test? We believe that comprehensive testing should include two aspects

The relationship between the transport layer and the network layer In the protocol stack, the transport layer is located on the network layer. The Transport Layer Protocol provides logical communication for processes running on different hosts, while the network layer

// Reference: RFC 1700 # Define protocol_icmp 1 // ICMP# Define protocol_igmp 2 // Internet Group Management# Define protocol_ggp 3 // gateway-to-Gateway# Define protocol_ip 4 // ip in IP (encasulation)# Define protocol_st 5 // stream# Define protocol_tcp 6 // Transmission Control# Define protocol_ucl 7 // UCL# Define protocol_egp 8 // exterior Gateway Protocol# Define protocol_igp 9 // any private interior gateway# Define protocol_bbn_rcc_mon 10 // b

Through understanding the computer network, its layer-7 structure has different protocols to regulate. Based on the network type, we can divide these protocols into LAN protocols and generalized network protocols. Now let's talk about what protocols are included in the broad network

To learn about networks, you must be familiar with the network layers and protocol groups. Among them, the most famous is the TCP/IP protocol group. We will introduce the overall structure in this regard systematically. This article emphasizes the concept and definition of network layers and

For a real-time network voice video system, the quality of the network plays a decisive role in the user experience of the system, so it is necessary to conduct more comprehensive network testing and network tuning before formally deploying the system. It will be a complex s

Recently, I have been porting the network protocol stack. I have found a lot of information about the protocol stack. This is a summary of some professional terms and is hereby recorded for reference. 1. Several data exchange methods and features Line switching: the concept of the source telephone system. The hardware switch enables the input and output signals.

I want to share with you an article on the HTTP protocol. It is very helpful for new users who are waiting for network analysis.Original post address: http://www.csna.cn/viewthread.php? Tid = 371 I. PurposeI have been learning network analysis for some time. Now I am getting started. I think I didn't know where to start when I first came into contact. To learn ab

A network protocol is a collection of standards, rules, and norms that a computer uses to Exchange data over a network. Common protocols are TCP protocol, IP Protocol, UDP protocol, ICMP proto