@clokep reported
Trac ID	trac#10276
Type	defect
Created	2021-11-16 13:02:18Z

I believe the type hints on IHostnameResolver.resolveHostName are incorrect in two places:

1. addressTypes needs to be an iterable of IAddress types, not instances. (I don't think it needs to be a sequence, but not 100% sure on that.)
2. The return type might be incorrect. It is declared as IResolutionReceiver (one of the input arguments), but at least the GAIResolver implementation returns an instance of IHostResolution. So something funky is going on.

Found while adding type hints to Synapse: matrix-org/synapse#11328

trac-id__10276 10276
type__defect defect
reporter__clokep clokep
priority__low low
milestone__None None
branch__ 
branch_author__ 
status__new new
resolution__None None
component__core core
keywords__None None
time__1637067738920446 1637067738920446
changetime__1637067738920446 1637067738920446
version__None None
owner__None None