Force IPv4 usage

process_subways.py

@@ -25,6 +25,17 @@ from subway_structure import (
     MODES_RAPID,
 )
 
+# Hack to always use IPv4.
+import socket
+
+old_getaddrinfo = socket.getaddrinfo
+def new_getaddrinfo(*args, **kwargs):
+    responses = old_getaddrinfo(*args, **kwargs)
+    return [response
+            for response in responses
+            if response[0] == socket.AF_INET]
+socket.getaddrinfo = new_getaddrinfo
+
 
 def overpass_request(overground, overpass_api, bboxes):
     query = '[out:json][timeout:1000];('

subway_structure.py

@@ -1,5 +1,4 @@
 import csv
-import itertools
 import logging
 import math
 import urllib.parse
@@ -1379,7 +1378,7 @@ class City:
 
         self.elements = {}  # Dict el_id → el
         self.stations = defaultdict(list)  # Dict el_id → list of StopAreas
-        self.routes = {}  # Dict route_master_ref → RouteMaster
+        self.routes = {}  # Dict route_ref → route
         self.masters = {}  # Dict el_id of route → route_master
         self.stop_areas = defaultdict(
             list
@@ -1716,18 +1715,6 @@ class City:
                 if t not in have_return:
                     self.notice('Route does not have a return direction', rel)
 
-    def validate_route_refs(self):
-        master_refs = sorted(m.ref for m in self.routes.values())
-        for ref, group in itertools.groupby(master_refs):
-            if len(list(group)) > 1:
-                # This can occur if some routes with some ref belong to
-                # a route_master, but other with the same ref doesn't.
-                self.error("Route masters {} have the same ref".format(
-                    ', '.join(
-                        m.id for m in self.routes.values() if m.ref == ref
-                    )
-                ))
-
     def validate_lines(self):
         self.found_light_lines = len(
             [x for x in self.routes.values() if x.mode != 'subway']
@@ -1794,8 +1781,6 @@ class City:
         self.count_unused_entrances()
         self.found_interchanges = len(self.transfers)
 
-        self.validate_route_refs()
-
         if self.overground:
             self.validate_overground_lines()
         else: