public async Task UnsubscribePriceStream(PriceSubscriptionRequestDto request)
{
Console.WriteLine("Received unsubscription request {0} from connection {1}", request, Context.ConnectionId);
// remove client from the group
var groupName = string.Format(PriceStreamGroupPattern, request.CurrencyPair);
await Groups.Remove(Context.ConnectionId, groupName);
Console.WriteLine("Connection {0} removed from group '{1}'", Context.ConnectionId, groupName);
}
public async Task SubscribePriceStream(PriceSubscriptionRequestDto request)
{
_contextHolder.PricingHubClient = Clients;
Console.WriteLine("Received subscription request {0} from connection {1}", request, Context.ConnectionId);
// add client to this group
var groupName = string.Format(PriceStreamGroupPattern, request.CurrencyPair);
await Groups.Add(Context.ConnectionId, groupName);
Console.WriteLine("Connection {0} added to group '{1}'", Context.ConnectionId, groupName);
// send current price to client
var firstPrice = new PriceDto {
Symbol = "TEST"
};
await Clients.Caller.OnNewPrice(firstPrice);
Console.WriteLine("Snapshot published to {0}: {1}", Context.ConnectionId, firstPrice);
}