When studying the mavlink2 protocol of PX4, when calculating the checksum, a CRC_EXTRA needs to be added to participate in the calculation (but CRC_EXTRA does not participate in data transmission and is only used to calculate the checksum). However, the definition of CRC_EXTRA of mavlink2 has not been found online. array. Later I found it […]
Tag: checksum
C++ implements checksum calculation (no negation step)
Title Write a computer program to calculate the 16-bit checksum of a file. The fastest way is to use a 32-bit integer to store the sum. Remember to handle carry bits (i.e., those bits beyond 16 bits) by adding them to the checksum. Require: 1. Run as command line: check_sum infile. Among them, check_sum is […]
Enable block verification checksum on PG or HGDB
Hangao Database Directory Environment Document Purpose Details Environment System platform: Linux x86-64 Red Hat Enterprise Linux 7 Version: 14,N/A Document Purpose Purpose Use checksum to provide block verification for the database to discover hidden block corruption problems. Note that it only applies to native PG or HGDB Enterprise Edition, or HGDB Security Edition that does […]
[Chaohua Xishi] RT1060 ICMP hardware checksum insertion method
【Morning Blossoms at Dusk】RT1060 ICMP hardware checksum insertion method 1. Introduction to the article 2. Modification of function implementation code 2.1 Test platform 2.2 Code modification points 3. Test results 3.1 Remove the test packets of software checksum 3.2 Add test packets with hardware checksum enabled 1. Introduction to the article ICMP (Internet Control Message […]
Database SQL Server detected a consistency-based logical I/O error Incorrect checksum Solution
Directory 1. Error message: Second, the reason analysis: 3. Solution: 4. Execution results: 5. Important Notes 1. Error message: This article verifies that the baiduAi_0258 table in the database cannot be queried by the ID condition of the select statement. For example, select * from baiduAi_0258 where ID =’0000403e-7903-413b-87ab-3c14d0295482′ will prompt the following error message. […]
UDP checksum (checksum) principle
Directory 1. Checksum principle 1.1 Checksum calculation 1.2 Checksum Verification 2. UDP checksum principle 2.1 UDP verification data range 2.2 Sender UDP checksum calculation 2.3 Receiver UDP checksum verification 3. UDP pseudo-header 4. UDP checksum sample code 4.1 Sender sample code 4.2 Receiver sample code 5. Determine whether the UDP checksum is calculated correctly? 1. […]
2023-04-15: The function of filter_audio.c of ffmpeg is to generate a sine wave audio, then pass through a simple filter chain, and finally output the MD5 checksum of the data. Please rewrite it in go language.
2023-04-15: The function of filter_audio.c of ffmpeg is to generate a sine wave audio, then pass through a simple filter chain, and finally output the MD5 checksum of the data. Please rewrite it in go language. Answer 2023-04-15: See the github/moonfdd/ffmpeg-go library for the code. The following are the steps to reimplement the function of […]
[Solved] Solidity Merkel tree (Merkel tree) uses remix to verify bad address checksum error
1. Prepare the environment: remix development environment, the generated Merkle tree verification leaf (proof), root node (root) JavaScript code to generate Merkel Tree const {MerkleTree} = require(‘merkletreejs’); const keccak256 = require(‘keccak256’); // const {ethers} = require(“hardhat”); main() function main() { let whitelistAddresses = [ ‘0x701cDa6a701c568545dCfcB03FcB875f579D3BDC’, ‘0x701ce5Ba30Da6eB11978939379D383beb5Df9b33’, ‘0x701c0c8cE7C35c40F4F94070a9Ed592fC85c231D’, ‘0x701c076d3Cd709a38D2f83Cd032297a1941beb5D’, ]; let leafNodes = []; for (let […]
[Solved] docker image push prompts file integrity checksum failed
Error: Check the on-site push image according to the content of the error. The error is that the file verification failed, and it is determined that the image file is damaged. Use inspect to view the image directory. # docker inspect docker.kedacom.com:15000/xxl-job-admin:p1.8.1.01 |grep “overlay2/” # docker.kedacom.com:15000/xxl-job-admin:p1. 8.1.01 is the name of the abnormal image Find […]
[Solved] Reasons and solutions for Ubuntu reporting the error “Hash checksum does not match” in the apt command
Recently, I am using CCProxy to act as a proxy for ubuntu18.04 through Windows 10, so that it can connect to the external network and connect to the software source repository. I. Error report However, in the process of using, sudo apt update has been reporting errors since the beginning, as follows: test@tetetete:~$sudo apt update […]