细化http request错误分类

httpclient/client.go

@@ -270,9 +270,14 @@ func (hc *HttpClient) requestBackendApi() *define.Response {
 		response.Seq++
 		response.RequestCount++
 		if response.RestyResponse, err = hc.request.Send(); nil != err {
+			errType := define.RequestFailTypeSend
+			if strings.Contains(strings.ToLower(err.Error()), "client.timeout exceeded while awaiting headers") {
+				// 请求超时
+				errType = define.RequestFailTypeTimeoutError
+			}
 			response.FailInfo = &define.ResponseFailInfo{
-				Type:    define.RequestFailTypeSend,
-				Message: "response instance is nil",
+				Type:    errType,
+				Message: err.Error(),
 			}
 			time.Sleep(time.Duration(hc.reqConfig.RetryRule.RetryTimeInterval) * time.Millisecond)
 			continue
@@ -291,8 +296,13 @@ func (hc *HttpClient) requestBackendApi() *define.Response {
 		hc.fillResponseCookie(response)
 		hc.fillResponseBody(response)
 		if response.HttpCode != http.StatusOK {
+			errType := define.RequestFailTypeServerError
+			if response.HttpCode/100 == 4 {
+				// 客户端错误
+				errType = define.RequestFailTypeClientRequestInvalidError
+			}
 			response.FailInfo = &define.ResponseFailInfo{
-				Type:    define.RequestFailTypeServerError,
+				Type:    errType,
 				Message: "http code is " + response.HttpCodeStatus + ", not success",
 			}
 			time.Sleep(time.Duration(hc.reqConfig.RetryRule.RetryTimeInterval) * time.Millisecond)