We have attempted to utilize both this and the Java lib to download DFP reports from the ReportService through a managed NAT service, whose default timeout is 350 seconds. The absence of a Keep-Alive header on the http call forces the NAT to drop our connection prematurely.

https://github.com/googleads/googleads-python-lib/blob/master/googleads/common.py#L681 sets the socket timeout of the call to 1 hr, and this allows us to download the report from a public subnet, but our process must run behind the NAT and we're thus stymied with the current code base.

Is it possible to either a) add a Keep-Alive header with a similar timeout as in L681, or b) allow users to pass in the needed headers as part of the call? We'd hate to have to edit and keep synchronized changes to the library.

Thanks!
Oskar