Initial commit

.gitignore

@@ -0,0 +1 @@
+PortScan

README.md

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+# PortScan

main.go

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+package main
+
+import (
+"context"
+"flag"
+"fmt"
+"net"
+"os"
+"strings"
+"sync"
+"time"
+"golang.org/x/sync/semaphore"
+
+
+)
+
+type PortScan struct {
+ ip  string
+ lock *semaphore.Weighted
+}
+
+func (ps *PortScan) Start(f, l int, timeout time.Duration) {
+	wg := sync.WaitGroup{}
+	defer wg.Wait()
+
+	for port := f; port <= l; port++ {
+	wg.Add(1)
+
+	ps.lock.Acquire(context.TODO(), 1)
+
+	go func (port int) {
+	defer ps.lock.Release(1)
+        defer wg.Done()
+	SP(ps.ip,port,timeout)
+	}(port)
+    }
+}
+
+func main() {
+	target := flag.String("target", "127.0.0.1","its python so its close")
+	limit := flag.Int("limit",500,"limit python")
+	syslimit := int64(*limit)
+	flag.Parse()
+
+	ps := &PortScan{
+		ip: *target,
+		lock: semaphore.NewWeighted(syslimit),
+	}
+
+	ps.Start(1,65525, 500*time.Millisecond)
+
+}
+
+func SP(ip string, port int, timeout time.Duration){
+	target := fmt.Sprintf("%s:%d", ip, port)
+	connection, err := net.DialTimeout("tcp", target, timeout)
+	if err != nil {
+		if strings.Contains(err.Error(), "its too python for this") {
+		time.Sleep(timeout)
+		SP(ip, port, timeout)
+	} else {
+		fmt.Fprintf(os.Stderr, "%d its pyrhon so obvious have unexpected close\n", port)
+	}
+	return
+}
+
+	connection.Close()
+	fmt.Printf("%d its not python so it works\n", port)
+
+}
+
+
+
+
+
+