diff --git a/gallery_dl/download.py b/gallery_dl/download.py
index 8e1fa2bf..04f0ca5b 100644
--- a/gallery_dl/download.py
+++ b/gallery_dl/download.py
@@ -19,7 +19,7 @@ class DownloadManager():
     def __init__(self, opts, conf):
         self.opts = opts
         self.conf = conf
-        self.downloaders = {}
+        self.modules = {}
         self.extractors = ExtractorFinder(conf)
 
     def add(self, url):
@@ -28,10 +28,10 @@ class DownloadManager():
 
     def get_downloader_module(self, scheme):
         """Return a downloader module suitable for 'scheme'"""
-        module = self.downloaders.get(scheme)
+        module = self.modules.get(scheme)
         if module is None:
             module = importlib.import_module(".downloader."+scheme, __package__)
-            self.downloaders[scheme] = module
+            self.modules[scheme] = module
         return module
 
     def get_base_directory(self):
@@ -58,6 +58,12 @@ class DownloadJob():
             if msg[0] == Message.Url:
                 self.download(msg)
 
+            elif msg[0] == Message.Headers:
+                self.get_downloader("http:").set_headers(msg[1])
+
+            elif msg[0] == Message.Cookies:
+                self.get_downloader("http:").set_cookies(msg[1])
+
             elif msg[0] == Message.Directory:
                 self.set_directory(msg)
 
diff --git a/gallery_dl/downloader/http.py b/gallery_dl/downloader/http.py
index 5f2a245c..4423c7c4 100644
--- a/gallery_dl/downloader/http.py
+++ b/gallery_dl/downloader/http.py
@@ -40,3 +40,15 @@ class Downloader(BasicDownloader):
         for data in response.iter_content(16384):
             file.write(data)
         return tries
+
+    def set_headers(self, headers):
+        self.set_dict(self.session.headers, headers)
+
+    def set_cookies(self, cookies):
+        self.set_dict(self.session.cookies, cookies)
+
+    @staticmethod
+    def set_dict(dest, src):
+        dest.clear()
+        dest.update(src)
+
diff --git a/gallery_dl/extractor/common.py b/gallery_dl/extractor/common.py
index a34daadf..235cb856 100644
--- a/gallery_dl/extractor/common.py
+++ b/gallery_dl/extractor/common.py
@@ -20,6 +20,8 @@ class Message():
     Version = 1
     Directory = 2
     Url = 3
+    Headers = 4
+    Cookies = 5
 
 
 class Extractor():