Description
Distinct users on groups on send to many groups
for some reason a user exist in 2 groups ( g1, g2 ).
when you try:
Clients.Groups([ "g1", "g2" ]).SendAsync( ... )
user will get the same message twice.
The required solution
add option to let the developer to chose to distinct the users connection on groups or not.
related issue:
https://github.com/aspnet/AspNetCore/issues/5966