public async Task <IEnumerable <string> > JoinGroupAsync(string groupName)
{
// Get clients in ths group, if members count less equals 4 then add him.
var clientsInGroup = await _clusterClient.GetGroup <SampleHub>(groupName).GetConnectionIdsAsync();
// Do not do this, just identical above. We can also get the members from another hub in this way.
clientsInGroup = await _clusterClient.GetGroup(groupName, typeof(SampleHub).GUID).GetConnectionIdsAsync();
if (clientsInGroup.Count <= 4)
{
await Groups.AddToGroupAsync(Context.ConnectionId, groupName);
// Returns the current group members.
return(clientsInGroup);
}
else
{
return(Enumerable.Empty <string>());
}
}
public override Task SendGroupAsync(string groupName, string methodName, object[] args, CancellationToken cancellationToken = default)
{
return(_clusterClient.GetGroup(groupName, _hubTypeId).SendClientSetAsync(methodName, args));
}
