Add TCP/UDP Forward/Nat

vtqe/tools/cmd.go

@@ -4,7 +4,7 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var Version string = "0.1.16"
+var Version string = "0.1.18"
 
 var Maincmd = &cobra.Command{
 	Use:   "",

vtqe/tools/net.go

@@ -0,0 +1,668 @@
+package tools
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"strconv"
+	"time"
+
+	"github.com/spf13/cobra"
+)
+
+func init() {
+	Maincmd.AddCommand(netcmd)
+	netcmd.AddCommand(netforwardcmd, natscmd, natccmd)
+	netforwardcmd.Flags().BoolP("tcp", "t", false, "TCP转发")
+	netforwardcmd.Flags().BoolP("udp", "u", false, "UDP转发")
+	netforwardcmd.Flags().IntP("port", "p", 1127, "转发本地端口")
+	netforwardcmd.Flags().StringP("address", "a", "0.0.0.0", "监听地址")
+
+	natscmd.Flags().BoolP("tcp", "t", false, "TCP穿透")
+	natscmd.Flags().BoolP("udp", "u", false, "UDP穿透")
+	natscmd.Flags().IntP("port", "p", 1127, "监听本地端口开始点")
+	natscmd.Flags().StringP("key", "k", "sakura", "认证密码")
+	natscmd.Flags().StringP("address", "a", "0.0.0.0", "监听本地地址")
+	natscmd.Flags().IntP("number", "n", 1, "监听端口数量")
+
+	natccmd.Flags().BoolP("tcp", "t", false, "TCP穿透")
+	natccmd.Flags().BoolP("udp", "u", false, "UDP穿透")
+	natccmd.Flags().StringP("port", "p", "1127", "转发穿透端口")
+	natccmd.Flags().StringP("key", "k", "1127", "认证密码")
+	natccmd.Flags().StringP("address", "a", "127.0.0.1", "转发穿透地址")
+}
+
+var netcmd = &cobra.Command{
+	Use:   "net",
+	Short: "端口转发，穿透相关",
+	Long:  "端口转发，穿透相关",
+}
+
+var netforwardcmd = &cobra.Command{
+	Use:   "forward",
+	Short: "TCP/UDP端口转发",
+	Long:  "TCP/UDP端口转发",
+	Run: func(cmd *cobra.Command, args []string) {
+		t, _ := cmd.Flags().GetBool("tcp")
+		u, _ := cmd.Flags().GetBool("udp")
+		p, _ := cmd.Flags().GetInt("port")
+		a, _ := cmd.Flags().GetString("address")
+		if len(args) != 1 {
+			cmd.Help()
+			return
+		}
+		ra := args[0]
+		if !t && !u {
+			fmt.Println("请指定TCP或UDP协议")
+			return
+		}
+
+		localtcp, err := net.ResolveTCPAddr("tcp", a+":"+strconv.Itoa(p))
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
+		remotetcp, err := net.ResolveTCPAddr("tcp", ra)
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
+		localudp, _ := net.ResolveUDPAddr("udp", a+":"+strconv.Itoa(p))
+		remoteudp, _ := net.ResolveUDPAddr("udp", ra)
+		if u {
+			go UdpForward(localudp, remoteudp)
+		}
+		if t {
+			go TcpForward(localtcp, remotetcp)
+		}
+
+		for {
+			time.Sleep(time.Second * 100)
+		}
+	},
+}
+
+var natscmd = &cobra.Command{
+	Use:   "nats",
+	Short: "TCP/UDP内网穿透服务端",
+	Long:  "TCP/UDP内网穿透服务端",
+	Run: func(cmd *cobra.Command, args []string) {
+		t, _ := cmd.Flags().GetBool("tcp")
+		u, _ := cmd.Flags().GetBool("udp")
+		p, _ := cmd.Flags().GetInt("port")
+		k, _ := cmd.Flags().GetString("key")
+		a, _ := cmd.Flags().GetString("address")
+		n, _ := cmd.Flags().GetInt("number")
+		/*udplocal, err := net.ResolveUDPAddr("udp", a+":"+p)
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
+		*/
+		for i := 0; i < n; i++ {
+			tcplocal, err := net.ResolveTCPAddr("tcp", a+":"+strconv.Itoa(p+i))
+			if err != nil {
+				fmt.Println(err)
+				return
+			}
+			udplocal, _ := net.ResolveUDPAddr("udp", a+":"+strconv.Itoa(p+i))
+			if !t && !u {
+				fmt.Println("请至少指定一种网络协议！")
+				return
+			}
+			if t {
+				go TcpNatServer(tcplocal, k)
+			}
+			if u {
+				go UdpNatServer(udplocal, k)
+			}
+		}
+		for {
+			time.Sleep(time.Second * 10)
+		}
+	},
+}
+
+var natccmd = &cobra.Command{
+	Use:   "natc",
+	Short: "TCP/UDP内网穿透客户端",
+	Long:  "TCP/UDP内网穿透客户端",
+	Run: func(cmd *cobra.Command, args []string) {
+		t, _ := cmd.Flags().GetBool("tcp")
+		u, _ := cmd.Flags().GetBool("udp")
+		p, _ := cmd.Flags().GetString("port")
+		k, _ := cmd.Flags().GetString("key")
+		a, _ := cmd.Flags().GetString("address")
+		/*udplocal, err := net.ResolveUDPAddr("udp", a+":"+p)
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
+		*/
+		if len(args) != 1 {
+			cmd.Help()
+			return
+		}
+		if !t && !u {
+			fmt.Println("请至少指定一种网络协议！")
+			return
+		}
+		tcprmt, err := net.ResolveTCPAddr("tcp", args[0])
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
+		tcpforward, err := net.ResolveTCPAddr("tcp", a+":"+p)
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
+		udprmt, _ := net.ResolveUDPAddr("udp", args[0])
+		udpforward, _ := net.ResolveUDPAddr("udp", a+":"+p)
+		if t {
+			go TcpNatClient(tcprmt, tcpforward, k)
+		}
+		if u {
+			go UdpNatClient(udprmt, udpforward, k)
+		}
+		for {
+			time.Sleep(time.Second * 10)
+		}
+	},
+}
+
+type tcpnat struct {
+	Conn *net.TCPConn
+	Msg  []byte
+	Date int64
+}
+
+func UdpNatClient(udpremote, udpforward *net.UDPAddr, pwd string) {
+	var trueconn *net.UDPConn
+	var err error
+	ismain := false
+	dialudp := func(udpaddr *net.UDPAddr) (*net.UDPConn, error) {
+		trueconn, err := net.DialUDP("udp", nil, udpaddr)
+		if err != nil {
+			return nil, err
+		}
+		return trueconn, nil
+	}
+	for {
+		for trueconn, err = dialudp(udpremote); err != nil; trueconn, err = dialudp(udpremote) {
+			fmt.Println(err)
+			time.Sleep(5 * time.Second)
+		}
+
+		fmt.Println("远端服务器连接成功" + trueconn.RemoteAddr().String())
+		trueconn.Write([]byte(pwd))
+		go func() {
+			for {
+				time.Sleep(time.Second * 5)
+				if !ismain {
+					_, err := trueconn.Write([]byte(pwd))
+					if err != nil {
+						return
+					}
+				}
+			}
+		}()
+		for {
+			var conn1, conn2 *net.UDPConn
+			buf := make([]byte, 7)
+			n, err := trueconn.Read(buf)
+			if n != 7 || err != nil {
+				fmt.Println(err)
+				trueconn.Close()
+				ismain = false
+				break
+			}
+			switch string(buf) {
+			case "yesyesi":
+				ismain = true
+				fmt.Println("主节点认证成功")
+				go func() {
+					for {
+						time.Sleep(time.Second * 2)
+						trueconn.Write([]byte("vicregs"))
+					}
+				}()
+			case "newconn":
+				if !ismain {
+					trueconn.Close()
+					break
+				}
+				for conn1, err = dialudp(udpforward); err != nil; conn1, err = dialudp(udpforward) {
+					time.Sleep(time.Second * 2)
+				}
+				fmt.Println("已连接转发远端：" + conn1.RemoteAddr().String())
+				for conn2, err = dialudp(udpremote); err != nil; conn2, err = dialudp(udpremote) {
+					time.Sleep(time.Second * 2)
+				}
+				conn2.Write([]byte("v%2^f&K"))
+				fmt.Println("已连接主控远端：" + conn2.RemoteAddr().String())
+				go UdpCopy(conn1, conn2)
+				go UdpCopy(conn2, conn1)
+			}
+		}
+	}
+}
+
+func TcpNatClient(tcpremote, tcpforward *net.TCPAddr, pwd string) {
+	var trueconn *net.TCPConn
+	var err error
+	ismain := false
+	dialtcp := func(tcpaddr *net.TCPAddr) (*net.TCPConn, error) {
+		trueconn, err := net.DialTCP("tcp", nil, tcpaddr)
+		if err != nil {
+			return nil, err
+		}
+		return trueconn, nil
+	}
+	for {
+		for trueconn, err = dialtcp(tcpremote); err != nil; trueconn, err = dialtcp(tcpremote) {
+			fmt.Println(err)
+			time.Sleep(5 * time.Second)
+		}
+
+		fmt.Println("远端服务器连接成功" + trueconn.RemoteAddr().String())
+		trueconn.Write([]byte(pwd))
+		go func() {
+			for {
+				time.Sleep(time.Second * 5)
+				if !ismain {
+					_, err := trueconn.Write([]byte(pwd))
+					if err != nil {
+						return
+					}
+				}
+			}
+		}()
+		for {
+			var conn1, conn2 *net.TCPConn
+			buf := make([]byte, 7)
+			n, err := trueconn.Read(buf)
+			if n != 7 || err != nil {
+				fmt.Println(err)
+				trueconn.Close()
+				ismain = false
+				break
+			}
+			switch string(buf) {
+			case "yesyesi":
+				ismain = true
+				fmt.Println("主节点认证成功")
+			case "newconn":
+				if !ismain {
+					trueconn.Close()
+					break
+				}
+				for conn1, err = dialtcp(tcpforward); err != nil; conn1, err = dialtcp(tcpforward) {
+					time.Sleep(time.Second * 2)
+				}
+				fmt.Println("已连接转发远端：" + conn1.RemoteAddr().String())
+				for conn2, err = dialtcp(tcpremote); err != nil; conn2, err = dialtcp(tcpremote) {
+					time.Sleep(time.Second * 2)
+				}
+				conn2.Write([]byte("v%2^f&K"))
+				fmt.Println("已连接主控远端：" + conn2.RemoteAddr().String())
+				go TcpCopy(conn1, conn2)
+				go TcpCopy(conn2, conn1)
+			}
+		}
+	}
+}
+
+func TcpCopy3(dst net.Conn, src *net.TCPConn) {
+	defer dst.Close()
+	defer src.Close()
+	io.Copy(dst, src)
+}
+
+func TcpCopy2(dst *net.TCPConn, src net.Conn) {
+	defer src.Close()
+	defer dst.Close()
+	io.Copy(dst, src)
+}
+
+func TcpCopy(dst, src *net.TCPConn) {
+	defer dst.Close()
+	defer src.Close()
+	io.Copy(dst, src)
+}
+
+func UdpCopy(dst, src *net.UDPConn) {
+	defer dst.Close()
+	defer src.Close()
+	for {
+		buf := make([]byte, 131072)
+		n, err := src.Read(buf)
+		dst.Write(buf[0:n])
+		if err != nil {
+			fmt.Println(err)
+			break
+		}
+	}
+}
+
+type udpnat struct {
+	Conn      *net.UDPAddr
+	Msg       []byte
+	Married   bool
+	LastTrans int64
+}
+
+func UdpNatServer(udplocal *net.UDPAddr, pwd string) {
+	var trueconn *net.UDPAddr
+	isconn := false
+	var lastcheck int64
+	udplistener, err := net.ListenUDP("udp", udplocal)
+	defer udplistener.Close()
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	udpool := make(map[string]*udpnat)
+	udpdial := make(map[string]*net.UDPAddr)
+	fmt.Println("UDP已建立监听：" + udplistener.LocalAddr().String())
+	go func() {
+		for {
+			time.Sleep(time.Second * 300)
+			pool := []string{}
+			for k, v := range udpool {
+				if time.Now().Unix()-v.LastTrans > 600 {
+					pool = append(pool, k)
+				}
+			}
+			for _, v := range pool {
+				if udpool[v].Married {
+					delete(udpdial, udpool[v].Conn.String())
+				}
+				delete(udpool, v)
+			}
+		}
+	}()
+	for {
+		buf := make([]byte, 131072)
+		n, conn, errp := udplistener.ReadFromUDP(buf)
+		go func() {
+			if !isconn {
+				if errp != nil {
+					return
+				}
+				if string(buf[0:len(pwd)]) == pwd {
+					isconn = true
+					trueconn = conn
+					udplistener.WriteToUDP([]byte("yesyesi"), trueconn)
+					fmt.Println("穿透客户端已注册")
+					lastcheck = time.Now().Unix()
+					go func() {
+						for {
+							time.Sleep(time.Second * 5)
+							if time.Now().Unix()-lastcheck > 4 {
+								fmt.Println("穿透客户端已下线")
+								isconn = false
+								break
+							}
+						}
+					}()
+				}
+			} else {
+				if string(buf[0:7]) == "vicregs" {
+					lastcheck = time.Now().Unix()
+					return
+				}
+				if string(buf[0:7]) == "v%2^f&K" {
+					fmt.Println("穿透客户端已建立新连接")
+					for k, v := range udpool {
+						if !v.Married {
+							v.Conn = conn
+							udplistener.WriteToUDP(v.Msg, conn)
+							v.Msg = []byte{}
+							udpaddr, _ := net.ResolveUDPAddr("udp", k)
+							udpdial[conn.String()] = udpaddr
+							v.Married = true
+							break
+						}
+					}
+					return
+				} else {
+					if v, ok := udpool[conn.String()]; ok {
+						if !v.Married {
+							for i := 0; i < n; i++ {
+								v.Msg = append(v.Msg, buf[i])
+							}
+							if len(v.Msg) > 10485760 {
+								v.Msg = []byte{}
+							}
+						} else {
+							_, err := udplistener.WriteToUDP(buf[0:n], v.Conn)
+							v.LastTrans = time.Now().Unix()
+							if errp != nil || err != nil {
+								fmt.Println(errp, err)
+								udplistener.WriteToUDP(nil, v.Conn)
+								udplistener.WriteToUDP(nil, conn)
+								delete(udpool, conn.String())
+								delete(udpdial, v.Conn.String())
+								return
+							}
+						}
+						return
+					}
+					if v, ok := udpdial[conn.String()]; ok {
+						_, err := udplistener.WriteToUDP(buf[0:n], v)
+						udpool[v.String()].LastTrans = time.Now().Unix()
+						if errp != nil || err != nil {
+							fmt.Println(errp, err)
+							udplistener.WriteToUDP(nil, v)
+							udplistener.WriteToUDP(nil, conn)
+							delete(udpool, v.String())
+							delete(udpdial, conn.String())
+							return
+						}
+						return
+					}
+					fmt.Println("链接已加入等待列表")
+					udpool[conn.String()] = &udpnat{
+						Msg:       buf[0:n],
+						Married:   false,
+						LastTrans: time.Now().Unix(),
+					}
+					_, err := udplistener.WriteToUDP([]byte("newconn"), trueconn)
+					if err != nil {
+						fmt.Println("穿透客户端已下线")
+						isconn = false
+					}
+				}
+			}
+		}()
+	}
+	fmt.Println("执行完毕")
+}
+
+func TcpNatServer(tcplocal *net.TCPAddr, pwd string) {
+	var trueconn *net.TCPConn
+	isconn := false
+	tcplistener, err := net.ListenTCP("tcp", tcplocal)
+	defer tcplistener.Close()
+	var waitconn []tcpnat
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	fmt.Println("TCP已建立监听：" + tcplistener.Addr().String())
+	for {
+		conn, err := tcplistener.AcceptTCP()
+		if err != nil {
+			return
+		}
+		go func() {
+			for {
+				now := time.Now().Unix()
+				if len(waitconn) != 0 {
+					if now-waitconn[0].Date > 8 {
+						waitconn[0].Conn.Close()
+						if len(waitconn) > 1 {
+							waitconn = waitconn[1:]
+						} else {
+							waitconn = []tcpnat{}
+						}
+					}
+				}
+				time.Sleep(time.Millisecond * 600)
+			}
+		}()
+		go func() {
+			if !isconn {
+				buf := make([]byte, len(pwd))
+				n, err := conn.Read(buf)
+				if n != len(pwd) {
+					conn.Close()
+					return
+				}
+				if err != nil {
+					conn.Close()
+					return
+				}
+				if string(buf) == pwd {
+					isconn = true
+					trueconn = conn
+					conn.Write([]byte("yesyesi"))
+					fmt.Println("穿透客户端已注册")
+					go func() {
+						for {
+							time.Sleep(time.Second * 2)
+							_, err := trueconn.Write([]byte("vicb612"))
+							if err != nil {
+								trueconn.Close()
+								isconn = false
+								return
+							}
+						}
+					}()
+				}
+				return
+			}
+		}()
+		go func() {
+			if isconn {
+				buf := make([]byte, 7)
+				n, err := conn.Read(buf)
+				if n != 7 {
+					conn.Close()
+					return
+				}
+				if err != nil {
+					conn.Close()
+					return
+				}
+				if string(buf) == "v%2^f&K" {
+					fmt.Println("穿透客户端已建立新连接")
+					if len(waitconn) != 0 {
+						conn.Write(waitconn[0].Msg)
+						go TcpCopy(waitconn[0].Conn, conn)
+						go TcpCopy(conn, waitconn[0].Conn)
+						if len(waitconn) > 1 {
+							waitconn = waitconn[1:]
+						} else {
+							waitconn = []tcpnat{}
+						}
+					} else {
+						conn.Close()
+					}
+				} else {
+					fmt.Println("链接已加入等待列表")
+					tcpnats := tcpnat{Msg: buf, Conn: conn, Date: time.Now().Unix()}
+					waitconn = append(waitconn, tcpnats)
+					_, err := trueconn.Write([]byte("newconn"))
+					if err != nil {
+						fmt.Println("穿透客户端已下线")
+						trueconn.Close()
+						isconn = false
+					}
+				}
+			}
+		}()
+	}
+
+}
+
+func TcpForward(tcplocal, tcpforward *net.TCPAddr) {
+	tcplistener, err := net.ListenTCP("tcp", tcplocal)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	dialtcp := func() (*net.Conn, error) {
+		tcpclient, err := net.DialTimeout("tcp", tcpforward.String(), time.Second*10)
+		if err != nil {
+			return nil, err
+		}
+		return &tcpclient, nil
+	}
+	fmt.Println("TCP监听已建立：" + tcplocal.String())
+	for {
+		conn, err := tcplistener.AcceptTCP()
+		if err != nil {
+			continue
+		}
+		fmt.Println(conn.RemoteAddr().String() + " 已连接")
+		tcpclient, err := dialtcp()
+		if err != nil {
+			fmt.Println(err)
+			conn.Write([]byte("Dial To Remote Addr Error"))
+			conn.Close()
+			continue
+		}
+		fmt.Println("成功连接到转发端口，本地端口：" + (*tcpclient).LocalAddr().String())
+		go TcpCopy2(conn, *tcpclient)
+		go TcpCopy3(*tcpclient, conn)
+	}
+}
+
+func UdpForward(udplocal, udpforward *net.UDPAddr) {
+	udplistener, err := net.ListenUDP("udp", udplocal)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	dialudp := func() (*net.UDPConn, error) {
+		udpclient, err := net.DialUDP("udp", nil, udpforward)
+		if err != nil {
+			return nil, err
+		}
+		return udpclient, nil
+	}
+	fmt.Println("UDP监听已建立：" + udplocal.String())
+	udppool := make(map[string]*net.UDPConn)
+	for {
+		buf := make([]byte, 131072)
+		n, conn, err := udplistener.ReadFromUDP(buf)
+		udpclient, ok := udppool[conn.String()]
+		if !ok || udpclient == nil {
+			fmt.Println(conn.String() + " 已连接")
+			udpclient, err = dialudp()
+			if err != nil {
+				fmt.Println(err)
+				udplistener.WriteToUDP([]byte("Dial To Remote Addr Error"), conn)
+				continue
+			}
+			udppool[conn.String()] = udpclient
+			fmt.Println("成功连接到转发端口，本地端口：" + udpclient.LocalAddr().String())
+		}
+		go udpclient.Write(buf[0:n])
+		go func(conns *net.UDPAddr, udpclient *net.UDPConn) {
+			bufs := make([]byte, 131072)
+			n, err := udpclient.Read(bufs)
+			udplistener.WriteToUDP(bufs[0:n], conns)
+			if err != nil {
+				udpclient.Close()
+				udppool[conn.String()] = nil
+			}
+		}(conn, udpclient)
+		if err != nil {
+			udpclient.Close()
+			udppool[conn.String()] = nil
+		}
+	}
+}

vtqe/tools/tcp.go

@@ -27,9 +27,8 @@ var tcpcmd = &cobra.Command{
 			fmt.Println("请指定远程tcp地址")
 			return
 		}
-		l, _ := this.Flags().GetString("lport")
-		p, _ := this.Flags().GetString("rport")
-		a, _ := this.Flags().GetString("laddr")
+		l, _ := this.Flags().GetString("port")
+		a, _ := this.Flags().GetString("addr")
 		s, _ := this.Flags().GetBool("local")
 		b, _ := this.Flags().GetBool("byte")
 		laddr, err := net.ResolveTCPAddr("tcp", a+":"+l)
@@ -72,7 +71,7 @@ var tcpcmd = &cobra.Command{
 				}
 			}()
 		}
-		mytcp, err := net.DialTimeout("tcp", args[0]+":"+p, time.Second*15)
+		mytcp, err := net.DialTimeout("tcp", args[0], time.Second*15)
 		if err != nil {
 			fmt.Println(err)
 			if s {
@@ -134,9 +133,8 @@ var tcpcmd = &cobra.Command{
 func init() {
 	Maincmd.AddCommand(tcpcmd)
 	tcpcmd.Flags().BoolP("byte", "b", false, "发送二进制数据")
-	tcpcmd.Flags().StringP("lport", "l", "1127", "本地监听端口")
-	tcpcmd.Flags().StringP("rport", "p", "1127", "远程连接端口")
-	tcpcmd.Flags().StringP("laddr", "a", "0.0.0.0", "本地监听ip")
+	tcpcmd.Flags().StringP("port", "p", "1127", "本地监听端口")
+	tcpcmd.Flags().StringP("addr", "a", "0.0.0.0", "本地监听ip")
 	tcpcmd.Flags().BoolP("local", "s", false, "启动本地监听")
 	tcpsendcmd.Flags().StringP("port", "p", "1127", "远程连接端口")
 	tcpsendcmd.Flags().StringP("addr", "a", "0.0.0.0", "远程监听ip")

vtqe/tools/udp.go

@@ -20,13 +20,12 @@ var udpcmd = &cobra.Command{
 			fmt.Println("请指定远程udp地址")
 			return
 		}
-		l, _ := this.Flags().GetString("lport")
-		p, _ := this.Flags().GetString("rport")
-		a, _ := this.Flags().GetString("laddr")
+		l, _ := this.Flags().GetString("port")
+		a, _ := this.Flags().GetString("addr")
 		s, _ := this.Flags().GetBool("local")
 		b, _ := this.Flags().GetBool("byte")
 		laddr, err := net.ResolveUDPAddr("udp", a+":"+l)
-		raddr, err := net.ResolveUDPAddr("udp", args[0]+":"+p)
+		raddr, err := net.ResolveUDPAddr("udp", args[0])
 		if err != nil {
 			fmt.Println(err)
 			return
@@ -109,8 +108,7 @@ var udpcmd = &cobra.Command{
 func init() {
 	Maincmd.AddCommand(udpcmd)
 	udpcmd.Flags().BoolP("byte", "b", false, "发送二进制数据")
-	udpcmd.Flags().StringP("lport", "l", "1127", "本地监听端口")
-	udpcmd.Flags().StringP("rport", "p", "1127", "远程连接端口")
-	udpcmd.Flags().StringP("laddr", "a", "0.0.0.0", "本地监听ip")
+	udpcmd.Flags().StringP("port", "p", "1127", "本地监听端口")
+	udpcmd.Flags().StringP("addr", "a", "0.0.0.0", "本地监听ip")
 	udpcmd.Flags().BoolP("local", "s", false, "启动本地监听")
 }