🏗️ microservice fabric splitting

common/utils/get_client_ip.go

@@ -0,0 +1,26 @@
+package utils
+
+import (
+	"net"
+	"net/http"
+	"strings"
+)
+
+// GetClientIP returns the client IP address from the request.
+func GetClientIP(r *http.Request) string {
+	xForwardedFor := strings.TrimSpace(r.Header.Get("X-Forwarded-For"))
+	if xForwardedFor != "" {
+		return strings.Split(xForwardedFor, ",")[0]
+	}
+
+	ip := strings.TrimSpace(r.Header.Get("X-Real-Ip"))
+	if ip != "" {
+		return ip
+	}
+
+	ip, _, err := net.SplitHostPort(strings.TrimSpace(r.RemoteAddr))
+	if err != nil {
+		return ""
+	}
+	return ip
+}