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port number with a unique identity on the network can be combined to form a uniquely identifiable identifier socket. socket principle mechanism:? There are sockets on both ends of the communication. ? network communication is actually the communication between sockets. ? data is transmitted via IO between two sockets. UDP Transport Datagramsocket and Datagrampacket establish the sending end, the receiving end. set up the data package. invokes the Send receive method of th
TCP/IP status change diagram and TCP three-way handshake and four-way handshake (1) TCP/IP status change diagram: Detailed descriptions of each status: CLOSED: indicates the initial state. It is the same for both the server and
TCP/IP network programming (transcription note 1) –tcptable of Contents Server Client A better client-side implementation Source: "TCP/IP network Programming"Transcription Both sides of the communication have their own input cache and output cache
TCP/IP Note 2. Network Layer (1) -- IP, subnet, CIDR1. IP1.1 supporting agreementIP is one of the two most important protocols in the TCP/IP system.There are also four protocols used in combination with the
1. Preface This article is used to introduce the basic content of TCP/IP protocol, which is very simple and basic. If you want to learn more, please refer to other materials, which is only for beginners. 2. TCP/IP Introduction TCP
This chapter describes the basis of the TCP/IP protocol cluster. IP routing ensures that the correct transmission path can be found for the datagram. If it cannot be found, the sender will be notified of a failure to issue the message. The information used in the route finding process is maintained in two ways: each host maintains its own route table (print the c
The following content and after a few blog is only a relatively elementary introduction, want to study in depth suggested reading"TCP/IP Detailed Volume 1: Protocol"1.iso/osi seven-layer modelThe next four layer is for the data transmission service, the physical layer is the
This book has a total of 33 chapters, from the bottom up to the above, discussed the TCP/IP implementation process:Data link layer and network layer->socket-> Transport layer;Going to learn from behind, start with the transport layer!Transport Layer-TCP+UDPNetwork layer (IP,ICMP,IGMP, routing, and neighbor subsystem an
TCP/IP Study Notes (1) I. TCP/IP structure:TCP/IP is a layer-4 protocol with the following structure:1. Application Layer: various applications and protocols, such as HTTP and
One day in a certain month, I wrote half a blog article on the WLW without CTRL + S to study "TCP/IP details volume 1"-link layer, suddenly, my roommate made a trip to the electric cooker with a great deal of cooking power, and there was a power outage! So for a long time, this relentless power failure was wiped out ..
IGMP, 6 indicates TCP, and 17 indicates UDP. ip data decides to pass the data to ICMP based on the value in the Protocol domain, IGMP, TCP, and UDP. The other layers have similar Protocol domains. When the transport layer transmits data to the application layer, it determines the application layer software to be transmitted Based on the port number in the header
This article only cares about Python's network programming and focuses on TCP/IP units.First, a simple understanding of the following:1, what is TCP/IP,UDP?TCP/IP (transmission Control
If you have encountered problems such as alpha router settings during use, let's solve them together! Today, we will teach you how to set up the TCP/IP protocol for the first step of implementing Alpha router settings. 1. Click Start, select Settings, and click Control Panel.2. Double-click the Network icon and select the configuration page in the network window.
TCP/IP explanation (1) -- the origin, layering, and basic knowledge of the Protocol. Why does the TCP/IP protocol www.2cto.com exist all over the world, various computers run different operating systems to serve everyone. These computers use different methods to express the
TCP/IP Study Notes 1: Basic Concepts Why is there a TCP/IP protocol? In the world, various computers run different operating systems to serve everyone. These computers use different methods to express the same information. It is as if God in the Bible had disrupted the acc
What is TCP/IP? TCP and IP protocols refer to two network protocols or data transmission methods used on the Internet ). They are transmission control protocol and Internet connection protocol. These two protocols are part of many TCP/IP
specific classifications. It is important to note that the IP address is a combination of network number + host number.Domain Name SystemThe domain Name system is a distributed database that provides services that convert host names (URLs) to IP addresses.RfcWhat is an RfC? The RFC is the standard document for the TCP/IP
protocol headers, request protocol headers, and response protocol headers. What are these protocol headers? Since it is the application layer, it is for the application. For example, the response protocol header contains the text format header, which defines how the browser should display the response information sent back from the Web server, such as XML, HTML, and other things. 4-layer Summary In this case, the TCP/
the data format and then sends it to the kernel protocol stack. TCPIP layer Four is also only the application layer is executed in the process, the other three layers are in the kernel protocol stack2. The protocol stack receives application layer data, adds TCP or UDP headers to it, and TCP, UDP headers have a 16-bit port number to represent the application-layer protocol.3. Encapsulate the
different from that on a PC. Its features are as follows: 1. slow speed: the fastest network transmission speed of 51 single-chip microcomputer of 12 m crystal oscillator is 25KB/s. The key is that TCP/IP needs to verify and calculate each transmitted byte, and the necessary copy. The processing speed of the 51 single-chip microcomputer is not enough. To improv
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