Golang语言特性揭秘：网络通信协议与消息传递

package main

import (
    "fmt"
    "net"
)

func handleRequest(conn net.Conn) {
    buffer := make([]byte, 1024)
    n, err := conn.Read(buffer)
    if err != nil {
        fmt.Println("Error reading:", err.Error())
        return
    }
    message := string(buffer[:n])
    fmt.Println("Received message:", message)
    conn.Write([]byte("Message received
"))
    conn.Close()
}

func main() {
    listener, err := net.Listen("tcp", "localhost:8080")
    if err != nil {
        fmt.Println("Error setting up listener:", err.Error())
        return
    }

    fmt.Println("Listening on localhost:8080")

    for {
        conn, err := listener.Accept()
        if err != nil {
            fmt.Println("Error accepting connection:", err.Error())
            continue
        }
        go handleRequest(conn)
    }
}

package main

import "fmt"

func worker(id int, jobs <-chan int, results chan<- int) {
    for job := range jobs {
        fmt.Println("Worker", id, "started job", job)
        results <- job * 2
        fmt.Println("Worker", id, "finished job", job)
    }
}

func main() {
    const numJobs = 5
    jobs := make(chan int, numJobs)
    results := make(chan int, numJobs)

    // 开启3个goroutine作为工作池
    for w := 1; w <= 3; w++ {
        go worker(w, jobs, results)
    }

    // 分配任务给工作池
    for j := 1; j <= numJobs; j++ {
        jobs <- j
    }
    close(jobs)

    // 获取结果
    for r := 1; r <= numJobs; r++ {
        <-results
    }
}