from rfc 2068 hypertext transfer protocol http 1 1

Remarks: Vary response header in HTTP network protocol (1) Those who often capture packets and view HTTP requests should be familiar with the Vary response header field. What is its purpose? When you use the PageSpeed tool to check the page, you will often see the suggestion "Specify a Vary: Accept-Encoding header (pl

proxy is "equivalent" to a TCP connection established with the server. Of course we have already said that this direct connection is just an illusion. The packet sending and receiving process is as follows: [Client]-http connect a. B. c. d: port-> [proxy]-TCP SYN-> [server][Client] [CLIENT]-ssl client hello-> [proxy]-ssl client hello-> [server] # SSL handshake Package 1[Client] [CLIENT]-ssl client certific

The concept of "non-persistent connection" A webpage consists of the most basic HTML and 10 Items JPEG Image structure,10 Items JPEG Image files are stored on the same server. SetThe URL isWww.server.com/somepath/index.html. If the user requests this webpage and uses"Non-persistent connection ",HTTPCustomer (usuallyThe following operations are performed between the user's browser and the server: 1.