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HTTPS is often used in our development of communication encryption technology, can effectively protect our network access security, this article mainly explains the configuration of one-way and two-way https. About the implementation of the principle of HTTPS here I will not repeat, attached to the Nanyi teacher about the https introduction of several blogs, interested in children's shoes can take a look: t

　　TVs Tube devices can be divided into unipolar and bipolar by polarity, i.e. unidirectional TVs and two-way TVs tubes.One-way TVs tube protection devices can only protect positive or negative pulses, while the bidirectional TVs tube protection device is connected to a protected line, one end of the ground, whether from the reverse or from the positive ESD pulse is released, more effectively protect the IC.

TCP/IP protocol three-way handshake and four-way handshake (establish connection and disconnect), tcpip 1. TCP/IP protocol Overview The TCP/IP Protocol (TransmissionControl Protocol/Internet Protocol) is also called the transmission control/Internet Protocol and network communication Protocol. This Protocol is the basis of the Internet. TCP/IP is the basic communication protocol used in the network. Althoug

TCP three-way handshake and four-way handshake Three-way handshake TCP connections are connected through three handshakes. First handshake When the client initiates a connection request to the server, the client sends the synchronous sequence number SYN to the server. Here, we set SYN to m and wait for the server to confirm. Then, the client status is SYN_SENT.

1. Establish a connection protocol (three-way handshake)(1) the client sends a TCP packet with SYN flag to the server. This is packet 1 during the three-way handshake.(2) The server responds to the client. This is the first packet in the three-way handshake. This packet carries both the ACK mark and SYN sign. Therefore, it indicates the response to the client SYN

Three-way handshake and four-way handshake for TCP/IP protocol I. TCP Message formatFor more information about the TCP/IP protocol, see "TCP/IP protocol details. The following figure shows the TCP packet format: Figure 1 fields in the TCP packet format need to be described below: (1) sequence number: Seq number, which occupies 32 bits. It is used to identify the byte stream sent from the TCP source end to

It is easy to understand TCP's three-way handshake to establish a connection and the four-way handshake to release the connection. Why do I wave three times when TCP establishes a connection? Each TCP connection requires three phases: Connection establishment, data transmission, and connection release. The three-way handshake occurs in the connection establishmen

Document directory In TCP/IP, TCP provides reliable connection services and uses three handshakes to establish a connection, as shown in figure 1. In TCP/IP, TCP provides reliable connection services and uses three handshakes to establish a connection, as shown in figure 1. (1) first handshake: when a connection is established, client a sends the SYN Packet (SYN = J) to server B and enters the syn_send status, waiting for confirmation from server B. (2) second handshake: When server B recei

Classic three-way handshake: (# add, "handshake" refers to the link from the left to the right in the figure) The classic four-way handshake closure diagram: TCP is the transmission control protocol used by the host to control the host layer. It provides reliable connection services and uses three handshakes to establish a connection: the bit code is the TCP flag bit. There are 6 types of labels: syn (sync

In the previous chapter, the interconnection force describes how to use static resource expressions to reference other elements. This chapter focuses on the binding between elements of Silverlight XAML. One-way binding I use simple and image examples to illustrate this problem. There are only two Silverlight controls on the Interface: textblock and slider. First, create a Silverlight project and write a slider. The value ranges from 1 to 40. The curre

Classic three-way handshake: (# add, "handshake" refers to the link from the left to the right in the figure)The classic four-way handshake closure diagram:TCP is the transmission control protocol used by the host to control the host layer. It provides reliable connection services and uses three handshakes to establish a connection: the bit code is the tcp flag bit. There are 6 types of labels: SYN (synchro

Two-way can be directly linked to each other, such as students and teachers, processing into two-way, you can check the students also find out who the teacher is, check the teacher also found out which students.One-way use at one end do not need to correlate with each other, such as schools and students, check the school generally do not need to correlate all the

Python has become one of the most popular programming languages because of its clear, easy-to-read style and wide applicability. Ranked fourth in the Tiobe rankings, it is a veritable first language of AI.Another reason for the popularity is that Python has very many third-party libraries. For example, Django/flask for Web development, numpy/scipy for scientific Computing, Scikit-learn for machine learning, supervisor/fabric for operations, beautifulsoup/for web crawlers Scrapy ... You can easil

encrypt and decrypt the data.This requires the decryption party to know the encryption key beforehand. The symmetric encryption algorithm is characterized by its openness, low computational capacity, fast encryption speed and high encryption efficiency.The disadvantage is that both sides of the transaction use the same key, the security is not guaranteed. In addition, each time a pair of users use a symmetric encryption algorithm, they need to use a unique key that no one else knows.This will i

As SEO continues to evolve, believe that a lot of friends have already know the basic SEO are to use what operation, often in the forum to see a lot of webmaster want to use the SEO to build their own brand, in fact, with the SEO to create their own brand has always been someone in the use of this a good way, So how to walk well SEO Brand Road, the following introduction several ways, I think the following several ways to do the best, will make their

Compared with socket developers, the TCP creation and link Division processes are automatically created by the TCP/IP protocol stack. therefore, developers do not need to control this process. however, it is helpful to understand the underlying TCP operation mechanism.In addition, a written examination such as a network protocol engineer is almost mandatory. the enthusiasm of the company for this issue is beyond my expectation :-). This problem is sometimes emphasized before the interview in the

continuous byte stream, but cannot distinguish the basic message and message boundary of word throttling. After the byte stream is received, the upper-layer application interprets the byte stream as a message. It can be said that the sender encapsulates data into TCP data packets by protocol, and the receiver also reads data from TCP data packets by protocol. The maximum value of a TCP packet is 65495 bytes. 65495 = total length-IP header (20 bytes)-TCP Header (20 bytes) This section describes

This Protocol is very important. Here we will sort out its links and releases. The first is the three-way handshake: 1. The client initiates a request. For example, if the server sends packets SYN = 1, ACK = 0, an initial sequence number is selected: seq = x. SYNWhat is it? Create a synchronization sequence number when linking. When SYN = 1 and ACK = 0 at the same time, it indicates that this is the packet segment of the connection request. If the oth

connection) status. The above connection creation process is called three-way handshake. Why does a send a confirmation? The main purpose is to prevent the failure of the connection request packet segment from being suddenly transmitted to B, thus generating errors. Ii. TCP connection release 650) This. width = 650; "src =" http://s5.51cto.com/wyfs02/M01/80/1B/wKioL1c4PjmjaG2qAACQqFm6byI323.jpg "Title =" l2.jpg "alt =" wkiol1c4pjmjar2qaacqqfm6byi323

K-Way Merge sort (k-way merge sort) code (c + +)This address: Http://blog.csdn.net/caroline_wendyThe K-way Merge sort is a classic external sorting algorithm that programmers must master.Knowledge Concept Reference: main idea : in K-sorted files, select the first value, use the loser tree, update the binary tree structure, and finally select the optimal value.The