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127 lines
2.8 KiB
Go
127 lines
2.8 KiB
Go
4 years ago
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package main
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import (
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"fmt"
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"net"
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"strconv"
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"strings"
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"time"
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"b612.me/starainrt"
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"b612.me/starlog"
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"github.com/spf13/cobra"
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)
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var udpcmd = &cobra.Command{
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Use: "udp",
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Short: "发送并监听udp数据包",
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Long: "发送并监听udp数据包",
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Run: func(this *cobra.Command, args []string) {
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var raddr *net.UDPAddr
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r, _ := this.Flags().GetBool("recvonly")
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if len(args) != 1 && !r {
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fmt.Println("请指定远程udp地址")
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return
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}
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l, _ := this.Flags().GetString("port")
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a, _ := this.Flags().GetString("addr")
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s, _ := this.Flags().GetBool("local")
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b, _ := this.Flags().GetBool("byte")
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laddr, err := net.ResolveUDPAddr("udp", a+":"+l)
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if !r {
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raddr, err = net.ResolveUDPAddr("udp", args[0])
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}
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if err != nil {
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fmt.Println(err)
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return
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}
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if s {
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udplisten, err := net.ListenUDP("udp", laddr)
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if err != nil {
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fmt.Println(err)
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return
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}
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fmt.Println("监听已建立")
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go func() {
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for {
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buf := make([]byte, 204800)
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n, addr, err := udplisten.ReadFromUDP(buf)
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if err != nil {
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starlog.Errorln("Error from %s Where Message=%s\n", addr.String(), err.Error())
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continue
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}
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starlog.Infof("Receive Msg From %s : %s\n", addr.String(), string(buf[0:n]))
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if b {
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starlog.Infof("%#v\n", buf[0:n])
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}
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}
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}()
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}
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if !r {
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myudp, err := net.DialUDP("udp", nil, raddr)
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if err != nil {
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fmt.Println(err)
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return
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}
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fmt.Println("UDP虚拟连接已建立")
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go func() {
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var err error
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for {
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txt := starainrt.MessageBox("", "")
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if txt == "" {
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continue
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}
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if !b {
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_, err = myudp.Write([]byte(txt))
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} else {
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var sendbyte []byte
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bytes := strings.Split(txt, ",")
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for _, v := range bytes {
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ints, _ := strconv.Atoi(v)
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if ints < 0 || ints > 255 {
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continue
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}
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sendbyte = append(sendbyte, byte(ints))
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}
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_, err = myudp.Write(sendbyte)
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}
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if err != nil {
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fmt.Printf("Error from %s Where Message=%s\n", myudp.RemoteAddr().String(), err.Error())
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return
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}
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}
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}()
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for {
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buf := make([]byte, 204800)
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n, err := myudp.Read(buf)
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if err != nil {
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starlog.Infof("Error from %s Where Message=%s\n", myudp.RemoteAddr().String(), err.Error())
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return
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}
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starlog.Infof("Receive Msg From %s : %s\n", myudp.RemoteAddr().String(), string(buf[0:n]))
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if b {
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starlog.Infof("%#v", buf[0:n])
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}
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}
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} else {
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for {
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time.Sleep(time.Second)
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}
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}
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},
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}
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/*
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*/
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func init() {
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udpcmd.Flags().BoolP("byte", "b", false, "发送二进制数据")
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udpcmd.Flags().StringP("port", "p", "1127", "本地监听端口")
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udpcmd.Flags().StringP("addr", "a", "0.0.0.0", "本地监听ip")
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udpcmd.Flags().BoolP("local", "s", false, "启动本地监听")
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udpcmd.Flags().BoolP("recvonly", "r", false, "仅接收udp包")
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}
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