[oauth] add host config option (#2806)

docs/configuration.rst

@@ -1783,6 +1783,16 @@ Description
     in `cache <cache.file_>`__.
 
 
+extractor.oauth.host
+--------------------
+Type
+    ``string``
+Default
+    ``"localhost"``
+Description
+    Host name / IP address to bind to during OAuth authorization.
+
+
 extractor.oauth.port
 --------------------
 Type

docs/gallery-dl.conf

@@ -198,6 +198,7 @@
         {
             "browser": true,
             "cache": true,
+            "host": "localhost",
             "port": 6414
         },
         "paheal":

gallery_dl/extractor/oauth.py

@@ -41,7 +41,8 @@ class OAuthBase(Extractor):
         stdout_write("Waiting for response. (Cancel with Ctrl+c)\n")
         server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
         server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
-        server.bind(("localhost", self.config("port", 6414)))
+        server.bind((self.config("host", "localhost"),
+                     self.config("port", 6414)))
         server.listen(1)
 
         # workaround for ctrl+c not working during server.accept on Windows