Follow API redirects

dumpgenerator.py

@@ -1356,6 +1356,9 @@ def getParameters(params=[]):
 def checkAPI(api=None, session=None):
     """ Checking API availability """
     global cj
+    # handle redirects
+    for i in range(4):
+        print 'Checking API...', api
         r = session.post(
             url=api,
             data={
@@ -1363,7 +1366,9 @@ def checkAPI(api=None, session=None):
                 'meta': 'siteinfo',
                 'format': 'json'})
         resultText = r.text
-    print 'Checking API...', api
+        if r.url == api:
+            break
+        api = r.url
     if "MediaWiki API is not enabled for this site." in resultText:
         return False
     try: