BatchHTTPRequest: only add access token header if we have it

re-fixes googleapis#350. it was originally fixed by c669a3b following discussion in googleapis#351 (comment) , but then that fix got lost in the next commit, googleapis@282fc88 .
snarfed · Aug 29, 2017 · d94cb5b · d94cb5b
1 parent b63a71d
commit d94cb5b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/googleapiclient/http.py b/googleapiclient/http.py
@@ -1208,7 +1208,8 @@ def _serialize_request(self, request):
     if request.http is not None:
       credentials = _auth.get_credentials_from_http(request.http)
       if credentials is not None:
-        _auth.apply_credentials(credentials, headers)
+        if _auth.has_access_token(credentials):
+          _auth.apply_credentials(credentials, headers)
 
     # MIMENonMultipart adds its own Content-Type header.
     if 'content-type' in headers: