鉴权错误时不再返回200状态码，而是返回4xx

main.go

@@ -128,30 +128,35 @@ func check(response http.ResponseWriter, req *http.Request) {
 
 	// 获取传入域名
 	if len(req.Form.Get("domain")) == 0 {
+		response.WriteHeader(400)
 		fmt.Fprintf(response, "No domain specified.")
 		return
 	}
 	domain = req.Form.Get("domain")
 	// 获取传入文件名
 	if len(req.Form.Get("file")) == 0 {
+		response.WriteHeader(400)
 		fmt.Fprintf(response, "No file specified.")
 		return
 	}
 	file = req.Form.Get("file")
 	// 获取传入签名
 	if len(req.Form.Get("sign")) == 0 {
+		response.WriteHeader(400)
 		fmt.Fprintf(response, "No sign specified.")
 		return
 	}
 	sign = req.Form.Get("sign")
 	// 获取传入验证码
 	if len(req.Form.Get("checksum")) == 0 {
+		response.WriteHeader(400)
 		fmt.Fprintf(response, "No checksum specified.")
 		return
 	}
 	checksum = req.Form.Get("checksum")
 	// 获取传入时间戳
 	if len(req.Form.Get("t")) == 0 {
+		response.WriteHeader(400)
 		fmt.Fprintf(response, "No timestamp specified.")
 		return
 	}
@@ -162,6 +167,7 @@ func check(response http.ResponseWriter, req *http.Request) {
 	if err != nil {
 		fmt.Println("Access from IP:", ip)
 		fmt.Println("Incoming illegal timestamp:", t)
+		response.WriteHeader(403)
 		fmt.Fprintf(response, "Timestamp not allowed.")
 		return
 	}
@@ -170,13 +176,15 @@ func check(response http.ResponseWriter, req *http.Request) {
 	if expireTime < -timeRange {
 		fmt.Println("Access from IP:", ip)
 		fmt.Println("Incoming illegal timestamp:", expireTime)
+		response.WriteHeader(403)
 		fmt.Fprintf(response, "Timestamp not allowed.")
 		return
 	}
 	// 校验时间戳是否过期
 	if expireTime > timeRange {
 		fmt.Println("Access from IP:", ip)
 		fmt.Println("Incoming expired access:", expireTime)
+		response.WriteHeader(403)
 		fmt.Fprintf(response, "Timestamp expired.")
 		return
 	}
@@ -200,6 +208,7 @@ func check(response http.ResponseWriter, req *http.Request) {
 				// 检测到重放请求
 				fmt.Println("Access from IP:", ip)
 				fmt.Println("Incoming repeat access:", checksum)
+				response.WriteHeader(403)
 				fmt.Fprintf(response, "Repeat access.")
 				return
 			}
@@ -227,13 +236,15 @@ func check(response http.ResponseWriter, req *http.Request) {
 			// 获取的域名不存在
 			fmt.Println("Access from IP:", ip)
 			fmt.Println("Incoming illegal domain:", domain)
+			response.WriteHeader(404)
 			fmt.Fprintf(response, "Domain not exist.")
 			return
 		}
 		if !checkFile {
 			// 获取的文件不存在
 			fmt.Println("Access from IP:", ip)
 			fmt.Println("Incoming illegal filename:", file)
+			response.WriteHeader(404)
 			fmt.Fprintf(response, "File not exist.")
 			return
 		}
@@ -246,6 +257,7 @@ func check(response http.ResponseWriter, req *http.Request) {
 		// 签名错误
 		fmt.Println("Access from IP:", ip)
 		fmt.Println("Incoming unauthorized access:", sign)
+		response.WriteHeader(401)
 		fmt.Fprintf(response, "Unauthorized access.")
 	}
 }