网络端口扫描器代码,GO代码库,德仔网

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【GO】网络端口扫描器

作者:余风 / 发布于2014/2/7/ 921

端口扫描器

package main



import (

"net"

"fmt"

"os"

"runtime"

"time"

"strconv"

)



func loop(startport, endportint, inport chanint) {

fori := startport; i <= endport; i++{

inport <- i

}

}



func scanner(inport, outport, out chanint, ip net.IP, endportint){

for{

in := <- inport

//fmt.Println(in)

tcpaddr := &net.TCPAddr{ip,in}

conn, err := net.DialTCP("tcp", nil, tcpaddr)

iferr != nil {

outport <- 0

}else{

outport <- in

}

conn.Close()

ifin == endport{

out <- in

}

}

}



func main() {

starttime :=time.Now().Unix()

runtime.GOMAXPROCS(4)

inport := make(chanint)

outport := make(chanint)

out := make(chanint)

collect := []int{}

iflen(os.Args) != 4 {

fmt.Println("Usage: scanner.exe IP startport endport")

fmt.Println("Endport must be larger than startport")

os.Exit(0)

}

ip := net.ParseIP(os.Args[1])

if(os.Args[3] < os.Args[2]) {

fmt.Println("Usage: scanner IP startport endport")

fmt.Println("Endport must be larger than startport")

os.Exit(0)

}

startport, _:= strconv.Atoi(os.Args[2])

endport, _ := strconv.Atoi(os.Args[3])

go loop(startport, endport, inport)

for{

select {

case<-out:

fmt.Println(collect)

endtime :=time.Now().Unix()

fmt.Println("The scan process has spent ",endtime-starttime,"second")

os.Exit(0)

default:

go scanner(inport, outport, out, ip, endport)



port := <- outport



ifport != 0{

collect = append(collect, port)

}

}

}

}

试试其它关键字

　网络端口　

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