Backend Development
Golang
golang Websocket Development Guide: Implementing multi-person online schedule management function
golang Websocket Development Guide: Implementing multi-person online schedule management function
Golang Websocket Development Guide: Implementing Multi-person Online Schedule Management Function
Introduction:
With the fast pace and multi-tasking requirements of modern life, we often need to Make adjustments and coordination in schedule. The multi-person online schedule management function can help multiple people collaborate and share schedules in real time, improving work efficiency. This article will introduce how to use Golang and Websocket technology to implement multi-person online schedule management functions, and attach specific code examples.
- Environment and dependencies:
- Golang 1.13 or higher
- Gin Web Framework
- Gorilla Websocket Library
-
Create project and initialize:
First, we need to create an empty Golang project and initialize a new Go module using the following command in the project root directory:go mod init schedule
Copy after login
Then, we need to introduce the required dependencies into the project:
go get -u github.com/gin-gonic/gin go get -u github.com/gorilla/websocket
- Create a Websocket server:
Next, we will create a Websocket server for the implementation of multi-person online schedule management functions . In the root directory of the project, create a file namedmain.goand add the following code in the file:
package main
import (
"log"
"net/http"
"github.com/gin-gonic/gin"
"github.com/gorilla/websocket"
)
func main() {
router := gin.Default()
upgrader := websocket.Upgrader{
CheckOrigin: func(r *http.Request) bool {
return true
},
}
router.GET("/ws", func(c *gin.Context) {
conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
if err != nil {
log.Println("Failed to upgrade connection:", err)
return
}
// TODO: 处理连接和消息
})
router.Run(":8000")
}In the above code, we use the Gin framework Created a simple HTTP server and registered a Websocket route on the /ws path. In the routing processing function, we upgrade the Upgrade HTTP connection to a Websocket connection and obtain the connection established with the client.
- Processing connections and messages:
In our Websocket server, we need to implement connection processing and message broadcast functions. Add the following code in the routing processing function:
connections := make(map[*websocket.Conn]bool) // 存储所有连接的映射表
router.GET("/ws", func(c *gin.Context) {
conn, err := upgrader.Upgrade(c.Writer, c.Request, nil)
if err != nil {
log.Println("Failed to upgrade connection:", err)
return
}
connections[conn] = true
for {
_, msg, err := conn.ReadMessage()
if err != nil {
log.Println("Error reading message:", err)
delete(connections, conn)
conn.Close()
break
}
// 广播消息给所有连接
for conn := range connections {
err := conn.WriteMessage(websocket.TextMessage, msg)
if err != nil {
log.Println("Error broadcasting message:", err)
delete(connections, conn)
conn.Close()
}
}
}
})In the above code, we use a mapping table connections to store all connections. When a new connection is established, we add the connection to the mapping table. At the same time, we read the message from the client through an infinite loop and broadcast the message to all connections.
- Front-end implementation:
Finally, we need to implement a simple interface on the front-end to test our multi-person online schedule management function. In the root directory of the project, create a file namedindex.htmland add the following code in the file:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Schedule</title>
</head>
<body>
<h1>Schedule</h1>
<input type="text" id="message" placeholder="Enter your message">
<button id="send">Send</button>
<ul id="messages"></ul>
<script>
const socket = new WebSocket("ws://localhost:8000/ws");
const messageInput = document.getElementById("message");
const sendButton = document.getElementById("send");
const messagesList = document.getElementById("messages");
sendButton.addEventListener("click", () => {
const message = messageInput.value;
socket.send(message);
messageInput.value = "";
});
socket.addEventListener("message", (event) => {
const message = document.createElement("li");
message.innerHTML = event.data;
messagesList.appendChild(message);
});
</script>
</body>
</html>In the above code, we used JavaScript WebSocket object to establish a connection with the server and listen for user input and server messages. When the user clicks the Send button, we send the entered message to the server. At the same time, when a message is received from the server, we add the message to the message list on the interface.
Summary:
This article introduces how to use Golang and Websocket technology to implement multi-person online schedule management functions. We first created a Websocket server and implemented the connection processing and message broadcast functions. Then, we implemented a simple interface on the front end to test our functionality. Through this article, I hope readers can understand and master the methods and techniques of using Golang and Websocket to achieve similar functions.
Reference link:
- Gin framework: https://github.com/gin-gonic/gin
- Gorilla Websocket library: https://github. com/gorilla/websocket
The above is the detailed content of golang Websocket Development Guide: Implementing multi-person online schedule management function. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to safely read and write files using Golang?
Jun 06, 2024 pm 05:14 PM
Reading and writing files safely in Go is crucial. Guidelines include: Checking file permissions Closing files using defer Validating file paths Using context timeouts Following these guidelines ensures the security of your data and the robustness of your application.
How to configure connection pool for Golang database connection?
Jun 06, 2024 am 11:21 AM
How to configure connection pooling for Go database connections? Use the DB type in the database/sql package to create a database connection; set MaxOpenConns to control the maximum number of concurrent connections; set MaxIdleConns to set the maximum number of idle connections; set ConnMaxLifetime to control the maximum life cycle of the connection.
Comparison of advantages and disadvantages of golang framework
Jun 05, 2024 pm 09:32 PM
The Go framework stands out due to its high performance and concurrency advantages, but it also has some disadvantages, such as being relatively new, having a small developer ecosystem, and lacking some features. Additionally, rapid changes and learning curves can vary from framework to framework. The Gin framework is a popular choice for building RESTful APIs due to its efficient routing, built-in JSON support, and powerful error handling.
What are the best practices for error handling in Golang framework?
Jun 05, 2024 pm 10:39 PM
Best practices: Create custom errors using well-defined error types (errors package) Provide more details Log errors appropriately Propagate errors correctly and avoid hiding or suppressing Wrap errors as needed to add context
How to save JSON data to database in Golang?
Jun 06, 2024 am 11:24 AM
JSON data can be saved into a MySQL database by using the gjson library or the json.Unmarshal function. The gjson library provides convenience methods to parse JSON fields, and the json.Unmarshal function requires a target type pointer to unmarshal JSON data. Both methods require preparing SQL statements and performing insert operations to persist the data into the database.
Golang framework vs. Go framework: Comparison of internal architecture and external features
Jun 06, 2024 pm 12:37 PM
The difference between the GoLang framework and the Go framework is reflected in the internal architecture and external features. The GoLang framework is based on the Go standard library and extends its functionality, while the Go framework consists of independent libraries to achieve specific purposes. The GoLang framework is more flexible and the Go framework is easier to use. The GoLang framework has a slight advantage in performance, and the Go framework is more scalable. Case: gin-gonic (Go framework) is used to build REST API, while Echo (GoLang framework) is used to build web applications.
How to solve common security problems in golang framework?
Jun 05, 2024 pm 10:38 PM
How to address common security issues in the Go framework With the widespread adoption of the Go framework in web development, ensuring its security is crucial. The following is a practical guide to solving common security problems, with sample code: 1. SQL Injection Use prepared statements or parameterized queries to prevent SQL injection attacks. For example: constquery="SELECT*FROMusersWHEREusername=?"stmt,err:=db.Prepare(query)iferr!=nil{//Handleerror}err=stmt.QueryR
What are the common dependency management issues in the Golang framework?
Jun 05, 2024 pm 07:27 PM
Common problems and solutions in Go framework dependency management: Dependency conflicts: Use dependency management tools, specify the accepted version range, and check for dependency conflicts. Vendor lock-in: Resolved by code duplication, GoModulesV2 file locking, or regular cleaning of the vendor directory. Security vulnerabilities: Use security auditing tools, choose reputable providers, monitor security bulletins and keep dependencies updated.
