Initial commit (code only without large binaries)

EdgeDNS/internal/utils/ip.go

@@ -0,0 +1,27 @@
+package utils
+
+import (
+	"net"
+	"strings"
+)
+
+// IsIPv4 是否为IPv4
+func IsIPv4(ip string) bool {
+	var data = net.ParseIP(ip)
+	if data == nil {
+		return false
+	}
+	if strings.Contains(ip, ":") {
+		return false
+	}
+	return data.To4() != nil
+}
+
+// IsIPv6 是否为IPv6
+func IsIPv6(ip string) bool {
+	var data = net.ParseIP(ip)
+	if data == nil {
+		return false
+	}
+	return !IsIPv4(ip)
+}