Tag：application layer
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Time：2021-8-19
Like it first and then watch it. Form a good habit preface I saw a question about Tomcat in the Q & A area these two days, which is very interesting. I just haven’t thought about this before. Today I’ll talk about the “why” in combination with Tomcat mechanism.In this paper, the analysis of file […]
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Time：2021-8-5
First of all, it is difficult to define what is the bottom development. Some people say that the bottom encoding and decoding of audio and video is the bottom, but we don’t think so. There are audio and video modules in ROM, driver and physical hardware. So let’s divide it this way and take whether […]
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Time：2021-8-1
TCP / IP protocol stack is mainly divided into four layers: application layer, transmission layer, network layer and data link layer,Each layer has corresponding protocols, as shown in the figure below Conceptual understanding: IP: network layer protocol（ (Expressway) TCP and UDP: transport layer protocol（ Truck) TCP/IP: represents transmission control protocol / Internet protocol, which refers […]
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Time：2021-7-13
Some time ago, while chatting with an old classmate I haven’t seen for a long time, I was suddenly asked what the HTTP protocol is? What comes to mind for the first time is words like request, response and so on. But can he really know what it is? I asked myself, so I looked […]
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Time：2021-7-6
This article mainly introduces Wireshark Packet capture tool HTTP protocol Related data, and then a simple analysis of these data, the main purpose is to more in-depth understanding HTTP protocolAnd then find out why the network is layered, OSI modelandTCP/IPThe difference between models. 1. HTTP protocol packet capture (Wireshark) 1.1 open Wireshark Tool, select the […]
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Time：2021-7-1
https://juejin.im/post/6865444445479927821 How to realize message communication gracefully? downside: The browser needs to constantly send requests to the server. However, HTTP requests and responses may contain long headers, in which the real effective data may be only a small part, so it will consume a lot of bandwidth resources HTML5 defines websocket […]
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Time：2021-6-21
First of all, it is difficult to define what is the bottom development. Some people say that the bottom codec of audio and video is the bottom, but we don’t think so. There are audio and video modules in ROM, driver and physical hardware. So let’s divide it in this way, and take whether there […]
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Time：2021-5-7
What is RPC? What is the principle of RPC? What is RPC? RPC (remote procedure call) – remote procedure call is a protocol that requests services from remote computer programs through the network without understanding the underlying network technology. For example, two different services a and B are deployed on two different machines. What should […]
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Time：2021-5-1
The first chapter is about web and network foundation 1.1 using HTTP to access the web 1.2 the birth of HTTP 1.3 network foundation TCP / IP TCP / IP protocol family The commonly used network is based on the TCP / IP protocol family. HTTP is an internal subset. 1.3.1 TCP / IP protocol […]
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Time：2021-4-28
In my work, I make a joke about using net.socket of nodejs to connect websocket server, so I write a paper to record the information about websocket, and give the method of realizing websocket client in nodejs. The difference between websocket and socket Websocket is a two-way communication protocol, both client and server can send […]
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Time：2021-4-17
A simple answer: The browser generates the request and sends it to the server; After receiving the request, the server performs some actions or obtains some resources, and then sends the response back to the client; After receiving the response data, the browser parses the DOM tree and CSS tree, processes JavaScript, and builds the […]
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Time：2021-4-15
Since 2017, the blockchain has gradually become the wave front of the Internet. The surge in exposure has led to a booming talent market. The knowledge required by blockchain is not any special or emerging knowledge. In addition to the knowledge in the field of cryptography, other knowledge and skills are almost common core knowledge […]
