implement decorator for cloudflare bypass

this method for enabling and caching a cloudflare bypass for a
requests.session object allows for different cache-timeouts for
different domains

gallery_dl/extractor/kissmanga.py

@@ -22,6 +22,9 @@ class KissmangaExtractor(Extractor):
     def __init__(self, match):
         Extractor.__init__(self)
         self.url = match.group(0)
+        self.session.headers["Referer"] = self.url_base
+
+    request = cloudflare.bypass(url_base, 24*60*60)(Extractor.request)
 
 
 class KissmangaMangaExtractor(KissmangaExtractor):
@@ -33,7 +36,6 @@ class KissmangaMangaExtractor(KissmangaExtractor):
     })]
 
     def items(self):
-        cloudflare.bypass_ddos_protection(self.session, self.url_base)
         yield Message.Version, 1
         for chapter in self.get_chapters():
             yield Message.Queue, self.url_base + chapter
@@ -62,7 +64,6 @@ class KissmangaChapterExtractor(KissmangaExtractor):
     ]
 
     def items(self):
-        cloudflare.bypass_ddos_protection(self.session, self.url_base)
         page = self.request(self.url).text
         data = self.get_job_metadata(page)
         imgs = self.get_image_urls(page)

gallery_dl/extractor/readcomiconline.py

@@ -9,7 +9,7 @@
 """Extract comic-issues and entire comics from http://readcomiconline.to/"""
 
 from .common import Extractor
-from .. import text
+from .. import text, cloudflare
 from . import kissmanga
 import re
 
@@ -23,6 +23,10 @@ class ReadcomiconlineExtractor(Extractor):
     def __init__(self, match):
         Extractor.__init__(self)
         self.url = match.group(0)
+        self.session.headers["Referer"] = self.url_base
+
+
+    request = cloudflare.bypass(url_base, 30*60)(Extractor.request)
 
 
 class ReadcomiconlineComicExtractor(ReadcomiconlineExtractor,