Index: wget-1.19.1/src/http.c
===================================================================
--- wget-1.19.1.orig/src/http.c
+++ wget-1.19.1/src/http.c
@@ -3818,6 +3818,12 @@ gethttp (const struct url *u, struct url
         }
     }
 
+  // if (statcode == HTTP_STATUS_RANGE_NOT_SATISFIABLE)
+    {
+      fprintf (stderr, "hs->restval=%s\n", number_to_static_string(hs->restval));
+      fprintf (stderr, "contrange=%s\n", number_to_static_string(contrange));
+      fprintf (stderr, "contlen=%s\n\n", number_to_static_string(contlen));
+    }
   if (statcode == HTTP_STATUS_RANGE_NOT_SATISFIABLE
       || (!opt.timestamping && hs->restval > 0 && statcode == HTTP_STATUS_OK
           && contrange == 0 && contlen >= 0 && hs->restval >= contlen))