1

diff --git a/config.go b/config.go
index 22dd634427d1381633aab6495c17c1c698c962a4..f4192d701296790ee945be367770bce053508736 100755 (executable)
--- a/config.go
+++ b/config.go
@@ -146,7 +146,10 @@ func (t *Config) SwapSign(ctx context.Context, logger Logger) {
                logger.Info(`I:`, fmt.Sprintf("%v > %v", t.Addr, k))
                t.routeMap.Store(k, route)
 
-               var logFormat = "%d %v %v%v %v %v"
+               var (
+                       logFormat         = "%d %v %v%v %v %v"
+                       logFormatWithBack = "%v %v %v%v > %v %v %v"
+               )
 
                for _, routePath := range route.Path {
                        t.routeP.Store(routePath, func(w http.ResponseWriter, r *http.Request) {
@@ -293,7 +296,8 @@ func (t *Config) SwapSign(ctx context.Context, logger Logger) {
                                                // some err can't retry
                                                break
                                        }
-                                       logger.Warn(`W:`, fmt.Sprintf(logFormat, reqId, r.RemoteAddr, route.config.Addr, routePath, "Err", ErrReqRetry))
+
+                                       logger.Warn(`W:`, fmt.Sprintf(logFormatWithBack, reqId, r.RemoteAddr, route.config.Addr, routePath, backP.Name, "ErrCanRetry", e))
                                }
 
                                if e != nil {
@@ -302,6 +306,7 @@ func (t *Config) SwapSign(ctx context.Context, logger Logger) {
                                                w.WriteHeader(http.StatusForbidden)
                                        } else if errors.Is(e, ErrAllBacksFail) {
                                                w.WriteHeader(http.StatusBadGateway)
+                                               logger.Warn(`W:`, fmt.Sprintf(logFormat, reqId, r.RemoteAddr, route.config.Addr, routePath, "Err", ErrAllBacksFail))
                                        } else {
                                                t.routeP.GetConn(r).Close()
                                        }