From 8e148c0e6e45ffc94fc882feac43199b737948b2 Mon Sep 17 00:00:00 2001
From: shadow1ng <shadow1ng>
Date: Fri, 5 Feb 2021 16:05:44 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9icmp=E5=8F=91=E5=8C=85?=
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---
 Plugins/icmp.go | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/Plugins/icmp.go b/Plugins/icmp.go
index a009b10..939b74e 100644
--- a/Plugins/icmp.go
+++ b/Plugins/icmp.go
@@ -53,12 +53,13 @@ func GetSys() SystemInfo {
 }
 
 func IcmpCheck(hostslist []string) {
+	TmpHosts := make(map[string]struct{})
+	var chanHosts = make(chan string)
 	conn, err := icmp.ListenPacket("ip4:icmp", "0.0.0.0")
 	endflag := false
 	if err != nil {
 		log.Fatal(err)
 	}
-	var chanHosts = make(chan string)
 	go func() {
 		for {
 			if endflag == true {
@@ -74,7 +75,8 @@ func IcmpCheck(hostslist []string) {
 
 	go func() {
 		for ip := range chanHosts {
-			if !IsContain(AliveHosts, ip) {
+			if _, ok := TmpHosts[ip]; !ok {
+				TmpHosts[ip] = struct{}{}
 				fmt.Printf("(icmp) Target '%s' is alive\n", ip)
 				AliveHosts = append(AliveHosts, ip)
 			}
@@ -84,7 +86,8 @@ func IcmpCheck(hostslist []string) {
 	for _, host := range hostslist {
 		write(host, conn)
 	}
-	if len(hostslist) > 10 {
+
+	if len(hostslist) > 100 {
 		time.Sleep(6 * time.Second)
 	} else {
 		time.Sleep(3 * time.Second)