Analysis of UDP Data Transferred by python Meteorological Equipment-Notes
Articles Catalogue
Background
II. Summary of Contents
2.1 Creation of UDP Communication Server
** DUP uses connectionless sockets**
2.2 16-digit data parsing
2.3 File Creation and Data Storage Analysis
Background
Recently, in a company's equipment, the built-in DTU sends 16-digit data messages ...
Posted by BSlepkov on Wed, 31 Jul 2019 08:06:39 +0200
tcp protocol sticking problem
Sticky packet problem is caused by the way of streaming data transmission in tcp protocol Give an example:
from socket import *
client = socket(AF_INET, SOCK_STREAM)
client.connect(('127.0.0.1', 8081))
# Communication cycle
while True:
cmd=input('>>: ').strip()
if len(cmd) == 0:continue
client.send(cmd.encode('u ...
Posted by damnsaiyan on Wed, 31 Jul 2019 04:25:16 +0200
Network Chat Room Based on Socket Programming
1. Project Profile:
Network Chat Room Based on Socket Programming
2. Functional description:
Multi-user registration, group distribution and private chat can be implemented:
3. Specific implementation process:Client implementation process:
1. The functions of the client can be further refined as follow ...
Posted by Bramme on Tue, 30 Jul 2019 22:06:13 +0200
Socket Makes a LAN Chat Tool
Socket Makes a LAN Chat Tool
First create a serializable stream class SerialiableMessage
This serialized message defines the transmission message structure. There are five member variables, which record the following information separately:
Private String sendUser Nmae; -- Sender username
private S ...
Posted by dcro2 on Tue, 30 Jul 2019 05:21:15 +0200
Run and control Nginx
Run and control Nginx
If my article has helped you, I will be very happy and welcome to follow me Github Welcome to my Blog , welcome star.
nginx command line parameters
Unlike many other software systems, Nginx has only a few command line parameters and is configured entirely through a configuratio ...
Posted by Duncan85 on Mon, 29 Jul 2019 04:14:15 +0200
broker expansion of kafka operation and maintenance
Background:
Recently, the company's three-node kafka cluster found that there are two nodes in the cutter box switch failure risk, will randomly appear port up/down situation. Therefore, it is necessary to temporarily migrate these two broker s, and then migrate back after the switch is repaired.
Here is the whole process of the simulation (e ...
Posted by nmreddy on Fri, 26 Jul 2019 15:28:49 +0200
NodeJs concise tutorial
NodeJs concise tutorial will start from scratch to learn about NodeJs and help JS developers build a full stack development technology stack!
Focus on getting more NodeJs articles
This article is the ninth chapter of NodeJs concise tutorial. It will introduce the basic operation of NodeJs net module (TCP server/client).
What is TCP?
Transmissio ...
Posted by cicibo on Wed, 24 Jul 2019 06:09:41 +0200
Ten minutes for you to understand the Android Touch Event Principle (Input Manager Service)
From finger-to-finger contact to MotionEvent being transmitted to Activity or View, what exactly happened in the middle? How did touch events come about in Android? Where is the source? In this paper, the whole process is described intuitively, not for understanding, but for understanding.
Android Touch Event Model
Touch events mus ...
Posted by met0555 on Mon, 22 Jul 2019 16:15:14 +0200
Use of DBlink in Mysql
In practice, we may encounter tables that need to operate on other database instances, but do not want the system to connect to multiple libraries. At this point, we need to use data table mapping. Like DBlink in Oracle, anyone who has used Oracle DBlink database links knows that they can query data across instances. Similarly, Mysql's own FEDE ...
Posted by jhbalaji on Sun, 21 Jul 2019 12:06:05 +0200
Java Network Programming - Are you GG or MM?
Stage 6 Network Programming
Each computer is connected through a network to achieve the effect of data interaction. The problem solved by network programming is how to make the program and program communicate and interact with each other.
Are you there?Are you a GG or MM?
(1) Overview of network models
(1) Two models
Network models generally ...
Posted by Cronje on Sat, 20 Jul 2019 04:55:42 +0200