编程知识 cdmana.com

In the network security network protocol knowledge point, what is the HTTP protocol?

   Network security http What is the protocol ? The development of Internet technology makes network security more and more important in society . Many companies are paying more and more attention to network security . The increase of market demand also makes many people see the broad prospect of network security , More and more people are learning network security technology . Network security network protocol knowledge points ,http What is the protocol ?
  HTTP, Hypertext transfer protocol . This protocol specifies the rules of communication between the browser and the world wide web server .HTTP It's a communication rule , The communication rules specify the content format that the client sends to the server , It also specifies the content format that the server sends to the client . In fact, we need to learn these two formats ! The format the client sends to the server is “ Request protocol ”; The format the server sends to the client is “ Response protocol ”.
  HTTP The protocol is a connectionless 、 A stateless agreement , Connectionless means that you are limited to one request per connection , Stateless is a protocol that has no memory for transactions .WEB The server itself does not recognize which requests were made by the same browser , Every request from the browser is completely isolated .
  HTTPS To put it simply HTTP Security version , stay HTTP Lower join SSL layer .HTTP and HTTPS It's all by TCP Protocol encapsulation , It's going on http The protocol and https When the agreement , Three handshakes and four waves are needed SSL It is mainly used for Web The secure transport protocol of , Encrypt the network connection at the transport layer , The guarantee is Internet Security of data transmission on .
   Type... In the browser address bar URL, Press enter to go through the following process :
  ① Browser direction DNS The server requests to resolve the URL The domain name in IP Address ;
  ② It is concluded that IP After the address , According to the IP Address and default port 80, And the server TCP Connect ;
  ③ Browser sends out read file (URL The file corresponding to the following part of the domain name in ) Of HTTP request , The request message serves as TCP The data of the third message of the three handshake is sent to the server ;
  ④ The server responds to browser requests , And put the corresponding html Text to browser ;
  ⑤ Release TCP Connect ;
  ⑥ The browser will html Text and display content ;
   The above is about “ Network security network protocol knowledge points ,http What is the protocol ?” Share content of . Learn more about network security technology , It is recommended to pay attention to the training course of network security for old boys .

版权声明
本文为[laonanhai123]所创,转载请带上原文链接,感谢
https://cdmana.com/2020/12/20201225112853361b.html

Scroll to Top