reuse connection adapters from parent extractors

gallery_dl/extractor/recursive.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2015-2019 Mike Fährmann
+# Copyright 2015-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -28,6 +28,7 @@ class RecursiveExtractor(Extractor):
 
         self.session.mount("file://", FileAdapter())
         page = self.request(self.url.partition(":")[2]).text
+        del self.session.adapters["file://"]
 
         yield Message.Version, 1
         with extractor.blacklist(blist):

gallery_dl/job.py

@@ -34,10 +34,16 @@ class Job():
         self.pred_url = self._prepare_predicates("image", True)
         self.pred_queue = self._prepare_predicates("chapter", False)
 
-        if parent and parent.extractor.config(
-                "category-transfer", parent.extractor.categorytransfer):
-            self.extractor.category = parent.extractor.category
-            self.extractor.subcategory = parent.extractor.subcategory
+        if parent:
+            pextr = parent.extractor
+
+            # transfer (sub)category
+            if pextr.config("category-transfer", pextr.categorytransfer):
+                extr.category = pextr.category
+                extr.subcategory = pextr.subcategory
+
+            # reuse connection adapters
+            extr.session.adapters = pextr.session.adapters
 
         # user-supplied metadata
         self.userkwds = self.extractor.config("keywords")