curl header add no cache

v2ray.sh

@@ -10,7 +10,7 @@ none='\e[0m'
 # Root
 [[ $(id -u) != 0 ]] && echo -e " 哎呀……请使用 ${red}root ${none}用户运行 ${yellow}~(^_^) ${none}" && exit 1
 
-_version="v2.42"
+_version="v2.43"
 
 cmd="apt-get"
 
@@ -2950,7 +2950,19 @@ update_v2ray() {
 	fi
 }
 update_v2ray.sh() {
-	local latest_version=$(curl -s -L "https://raw.githubusercontent.com/233boy/v2ray/master/v2ray.sh?r=$RANDOM" | grep '_version' -m1 | cut -d\" -f2)
+	local latest_version=$(curl -H 'Cache-Control: no-cache' -s -L "https://raw.githubusercontent.com/233boy/v2ray/master/v2ray.sh" | grep '_version' -m1 | cut -d\" -f2)
+
+	if [[ ! $latest_version ]]; then
+		echo
+		echo -e " $red获取 V2Ray 最新版本失败!!!$none"
+		echo
+		echo -e " 请尝试执行如下命令: $green echo 'nameserver 8.8.8.8' >/etc/resolv.conf $none"
+		echo
+		echo " 然后再继续...."
+		echo
+		exit 1
+	fi
+
 	if [[ $latest_version == $_version ]]; then
 		echo
 		echo -e "$green 木有发现新版本 $none"