Go語言實現伺服器和客戶端比較簡單
伺服器：
listen
accept
recv

客戶端
dial
write

1.server.go

package main

import (
    "log"
    "net"
    "os"
)

func recvMessage(client net.Conn) error {
    var message []byte
    message = make([]byte, 1024)

    for {
        len, _ := client.Read(message)
        if len > 0
 
 {
            log.Println(message[0:len])
        }
    }

    return nil
}

func main() {
    server, err := net.Listen("tcp", "localhost:9700")
    if err != nil {
        log.Fatal("start server failed!\n")
        os.Exit(1)
    }
    defer server.Close()

    log.Println("server is running...")
    for
 
 {
        client, err := server.Accept()
        if err != nil {
            log.Fatal("Accept error\n")
            continue
        }

        log.Println("the client is connectted...")
        go recvMessage(client)
    }
}

2.client.go

package main

import (
    "log"
    "net"
    "os"
)

func
 
 main() {
    client, err := net.Dial("tcp", "localhost:9700")
    if err != nil {
        log.Fatal("Client is dailing failed!")
        os.Exit(1)
    }

    client.Write([]byte("i am client"))

    client.Close()
}