Article Introduction：TCP connection, three-way handshake: The three-way handshake and four-way dissolution process of the TCP connection: When the client and server use the TCP connection to transmit data, they need to go through the three-way handshake to establish the connection and the four-way handshake to disconnect. As shown in the figure below, the above figure describes the detailed process of TCP connection from establishment to disconnection. The specific message details will be discussed below. During the TCP three-way handshake to establish a connection, the client first sends a request packet with SYN=1 and Sequence=p to the server. If the server agrees to grant the client the link, it sends a response packet with ACK=p+1, SYN=1, and Sequence=q. Finally received the service on the client

2016-07-29 comment 0  1128

Article Introduction：In order to accurately deliver data to the destination, the TCP protocol uses a three-way handshake strategy. After the data packet is sent out using the TCP protocol, TCP will not ignore the situation after the transmission. It will definitely confirm to the other party whether it was successfully delivered. TCP flags are used during the handshake: SYN and ACK. The sending end first sends a data packet with the SYN flag to the other party. After receiving it, the receiving end sends back a data packet with the SYN/ACK flag to convey confirmation information. Finally, the sending end sends back a data packet with an ACK flag, indicating the end of the "handshake". If shaking hands

2017-10-14 comment 0  2025

Article Introduction：Establishing TCP requires a three-way handshake to establish and a four-way handshake to disconnect. The whole process is shown in the figure below: Let’s first look at how to establish a connection. [Updated on 2017.01.04] This part of the content has incorrect pictures. Please forgive me. The correct pictures are as follows. The incorrect pictures will not be deleted. You can compare them for better understanding. Sorry for taking so long to update! ! The error diagram is as follows: First, the client sends a connection request message, and the server

2017-09-07 comment 0  2177

Article Introduction：The TCP three-way handshake is a key step in establishing a TCP connection. In this process, through the interaction of three message segments, the client and server confirm each other's identity and communication capabilities, thereby establishing a reliable connection. This mechanism ensures the reliability and integrity of data transmission, but it also brings time overhead, which needs to be weighed and optimized in practical applications.

2024-03-15 comment 0  1067

Article Introduction：The "connection-oriented" mentioned here means that you need to establish a connection, use the connection, and release the connection. Establishing a connection refers to the well-known TCP three-way handshake. When using a connection, data is transmitted in the form of one send and one confirmation. There is also the release of the connection, which is our common TCP four wave waves.

2023-07-24 comment 0  1436

Article Introduction：The process of establishing a TCP connection through a three-packet handshake is: 1. The server process first creates the transmission control block TCB and is in the listening state; 2. The client creates the transmission control block TCB and sends a connection request segment to the server; 3. The client After the end process receives the confirmation message segment from the server, it immediately replies with the confirmation message segment; 4. Enter the established connection state.

2020-06-29 comment 0  5201

Article Introduction：Suppose you are at a social gathering. If you only shake hands once, can you calculate how many handshakes you can do? This question may amuse you. This problem can be solved by using mathematical methods of permutation and combination. However, mathematical operations can be time consuming. In this article, we will discuss how to solve this problem using C++. We'll explore different approaches, including mathematical formulas, recursion, and other combinatorial techniques. Input Output ScenarioSuppose you have N number of people in gathering. You want to calculate the number of hand shakes possible such that persons

2023-08-29 comment 0  710

Article Introduction：The three-message handshake refers to tracking and negotiating the amount of data sent each time, ensuring that the sending and receiving of data segments are synchronized, confirming the data sending and when to withdraw the contact after the reception is completed based on the amount of data received, and establishing virtual connection.

2020-06-29 comment 0  5770

Article Introduction：​TCP is a protocol for connection-oriented, reliable process-to-process communication; TCP provides full-duplex service, that is, data can be transmitted in both directions at the same time.

2019-11-29 comment 0  2489

Article Introduction：IT House reported on July 14 that Samsung has just released the foldable mobile phones Galaxy Z Flip 6 and Z Fold 6, but there is also more and more news about the Samsung Galaxy S25 series. According to @ibinguniverse, the top model of the series, Galaxy S25 Ultra, will undergo major changes in appearance design. It is reported that Samsung has finalized the designs of three models of the Galaxy S25 series. Galaxy S25 Ultra: Adopts an asymmetric frame design to improve the hand feel. The side frames of the rear panel are rounder, which is conducive to holding with one hand. The front frame is straighter. The overall width remains the same as the previous generation, but the side frames are narrower. IT House noticed that, This news partially confirms the rumors about Galaxy S at the end of June this year.

2024-08-21 comment 0  349

Article Introduction：According to news on July 14, Samsung has just released the foldable mobile phones Galaxy Z Flip 6 and Z Fold 6, but there is also more and more news about the Samsung Galaxy S25 series. According to @ibinguniverse, the top model of the series, Galaxy S25 Ultra, will undergo major changes in appearance design. 1. Samsung has finalized the designs of three models of the Galaxy S25 series. Galaxy S25 Ultra adopts an asymmetric frame design to optimize the hand feel. The side frames on the back are rounded, and the front frame is straight, making it easy to hold with one hand. The design could make the bezels appear narrower, and it's unclear how this will be achieved. The width of Galaxy S25 Ultra remains unchanged, and the side borders become narrower. 1. New design rumors related to the end of June this year

2024-07-17 comment 0  326

Article Introduction：The second-hand recycling website uses the secondary and triple verification functions developed in PHP. With the rapid development of the second-hand recycling market, more and more people are beginning to buy and sell second-hand goods through the website. However, due to the existence of some bad merchants and fraudulent practices, users have higher requirements for transaction security. In order to protect the interests of users, the second-hand recycling website has developed a two- and three-step verification function by using PHP, which effectively improves user transaction security. The two-step and three-step verification function means that when users perform key operations such as account registration, login and transaction, in addition to regular

2023-07-02 comment 0  910

Article Introduction：According to news on April 11, the Galaxy M55 mobile phone released by Samsung last month is the company’s first mid-range smartphone to support 45W fast charging technology. After receiving the review phone, technology media SamMobile discovered that Samsung also included a 45W USB-C fast charging cable in the phone box for the first time. It is understood that Samsung has previously canceled the standard charger for mobile phones, but still provides a USB-C data cable with each mobile phone. This data cable only supports Samsung 25W charger and cannot achieve 45W fast charging. Samsung's 45W charger is equipped with a USB-C data cable with a thicker wire, which can carry more power. This time, Samsung put this data cable into the Galaxy M55 packaging box. The Galaxy M55 does not come with a charger.

2024-04-11 comment 0  1211

Article Introduction：The difference between socket communication and tcp communication: 1. The tcp protocol belongs to the transport layer protocol, while socket is an abstraction layer between the application layer and the transport layer; 2. Establishing a TCP connection requires a three-way handshake; 3. The socket connection can maintain a long connection ;4. TCP server and TCP client use socket communication, etc.

2022-01-24 comment 0  38682