go - 使用 udpconnection 和关联的有效负载信息创建映射

Question

我正在尝试创建一个映射以将密钥保存为连接的客户端及其有效负载信息。这是我的代码。我该怎么做

该代码允许客户端向服务器发送有效负载信息

package main

import (
    "fmt"
    "log"
    "net"

    "github.com/dustin/go-coap"
)

func main() {
    //listening for inconming request
    log.Fatal(coap.ListenAndServe("udp", ":5683",
        //function to handle incoming Client COAP Request u...dpconnection from          Remote Host & the udp address of remote
        coap.FuncHandler(func(l *net.UDPConn, a *net.UDPAddr, m *coap.Message) *coap.Message {
            log.Printf("Got message path=%q: %#v from %v", m.Path(), m, a)

            var connection = make(map[net.UDPConn]coap.Message)

            fmt.Println(connection)

            // connection[l]= m.Payload[]
            fmt.Println("The connecion is ", connection)
            //var connection =make(map[]m) //check if the message of client is confirmed with the

            if m.IsConfirmable() {

                res := &coap.Message{
                    Type:      coap.Acknowledgement,
                    Code:      coap.Content,
                    MessageID: m.MessageID,
                    Token:     m.Token,
                    Payload:   []byte("Acknowledgement from Sever : hello to you!")}

                res.SetOption(coap.ContentFormat, coap.TextPlain)

                log.Printf("Got it client %s %T", m.Payload, &res)
                return res
            }

            return nil
        })))
}