Summary of basic network knowledge II
Http protocol
URL
Usually, the "website" we commonly call is actually the URL
urlencode and urldecode
The urlencode method is to convert any parameter we give into a string suitable for placing in the URL. Specific rules:
Letters, numbers and hyphens remain unchanged.Convert spaces to plus signs.All other characters are con ...
Added by jigaruu on Wed, 27 Oct 2021 16:22:06 +0300
Cloud computing learning notes (11) (spanning tree protocol STP and MSTP)
Spanning tree protocol (STP)
STP overview
Generation of switching network loop
Formation of broadcast storm Multiframe copy MAC address table disorder
Introduction to STP
STP - Spanning Tree Protocol
Logically disconnect the loop to prevent broadcast stormWhen the line fails, the blocking interface is activated to restore commu ...
Added by LucienFB on Mon, 25 Oct 2021 07:43:58 +0300
Detailed explanation of Unet network for image segmentation
This note is based on the tensorflow-2 version and is contributed first code perhaps Download code (scientific Internet access may be required).
What is image segmentation
In the image classification task, the network assigns a label (or category) to each input image. However, suppose you want to know the shape of the object, which pixel belo ...
Added by niki77 on Wed, 20 Oct 2021 21:07:19 +0300
Using mininet to build p4 data plane
preface
Last P4, into network data plane programming This paper briefly introduces P4 and builds P4 network topology through the command line. The building process requires a lot of commands, which is cumbersome. In this article, we will build P4 through python script. The code involved in this article is: https://github.com/cykun/p4-mininet
...
Added by nthomp on Mon, 04 Oct 2021 05:13:43 +0300
Network performance monitoring tool smoking
What is smoking?
Smokeping is an open source software for monitoring network status and stability (developed by the author of RRDTool). It can monitor network conditions such as delay, packet loss rate, BGP multi line and so on; Smokeping will send various types of test data packets to the target equipment and system, measure and record, ...
Added by WebMonkey on Sun, 19 Sep 2021 06:55:48 +0300
Installation and configuration of Ubuntu firewall
Ubuntu Install UFW firewall
sudo apt-get install ufw
For general users, only the following settings are required:
sudo apt-get install ufw
sudo ufw enable
sudo ufw default deny
The above three commands are safe enough. If you need to open some services, you can use sudo ufw allow.
Enable
sudo ufw enable
sudo ufw default deny
#Aft ...
Added by konn on Fri, 10 Jul 2020 19:12:17 +0300
Android implements request HTTP authentication
These days, the development of external SDK, can achieve landing, payment.Similar to developing a set of QQ, WeChat third party login.The authorization protocol used is OAuth 2.0.Among them, Http Authentication is used, and you can consult the online materials. There are all kinds of answers, some don't know if they have been verified, and some ...
Added by ekalath on Fri, 10 Jul 2020 17:54:48 +0300
An algorithm for searching all paths between two points based on a graph's contiguity list implementation
The algorithm is implemented in C++.
Why write this algorithm? Because it is so hard to find only the implementation of the adjacency matrix on the network, I have made an implementation of the adjacency chain table myself, which can increase the speed.
This is achieved by using one of three stacks to traverse all vertices, the second stack t ...
Added by LoganK on Thu, 02 Jul 2020 18:16:21 +0300
cocos2d loads plist files (frame animation)
Integrate the pictures into one large picture, reduce the picture occupancy, there are plist files and png supporting files.
cocos loads plist files in two ways (queried)
1. If you load in the following way, your plist file must contain an animations node, otherwise the load will fail
auto cache = AnimationCache::get ...
Added by zahidraf on Tue, 30 Jun 2020 19:21:37 +0300
Huawei -- DHCP experiment
@Huawei - DHCP experiment
preface
DHCP (Dynamic Host Configuration Protocol) is a protocol designed by IETF to realize automatic IP configuration. It can automatically assign TCP/IP parameters such as IP address, subnet mask, IP address of default gateway and DNS server for clients
1: Experimenta ...
Added by mikeweb on Mon, 29 Jun 2020 11:02:44 +0300