ing

discovery/protocol/tcp/syn/synv4.go

@@ -34,16 +34,14 @@ func scanV4(discoverySession session.DiscoverySession, targetHost *omd.Host) err
 	go func() {
 		defer func() {
 			close(timerStopped)
-			log.Print("timer close:", targetHost.Address)
 		}()
 		ports := make(map[int]*omd.Port)
 
 		var delay atomic.Value
 		delay.Store(false)
-		ticker := time.NewTicker(time.Millisecond * 3000)
+		ticker := time.NewTicker(time.Millisecond * 20000)
 		defer func() {
 			ticker.Stop()
-			log.Print("ticker stop:", targetHost.Address)
 		}()
 
 		for {
@@ -89,6 +87,7 @@ func sendTCP4(discoverySession session.DiscoverySession, ps pcap.PCapScanner, ho
 	}
 
 	buf := gopacket.NewSerializeBuffer()
+	startTime := time.Now()
 
 Loop:
 	for portNumber := dp.FirstScanRange; portNumber < dp.LastScanRange; portNumber++ {
@@ -107,18 +106,20 @@ Loop:
 		if err := gopacket.SerializeLayers(buf, tcpPacket.Opts, tcpPacket.Eth, tcpPacket.IP, tcpPacket.TCP); err != nil {
 			return err
 		}
+
 		if err := ps.WritePacketData(buf.Bytes()); err != nil {
 			return err
 		}
 
 		select {
-		// case <-time.After(time.Microsecond * 10):
+		case <-time.After(time.Microsecond * 100):
 		case <-stopChan:
 			return nil
-		default:
 		}
 	}
 
+	log.Print("IP:", host.Address, " t:", time.Since(startTime))
+
 	return nil
 }