/// <summary>
/// Called when a connection has disconnected gracefully from this hub instance,
/// i.e. stop was called on the client.
/// </summary>
/// <returns>
/// A <see cref="T:System.Threading.Tasks.Task" />
/// </returns>
public override Task OnDisconnected(bool stopCalled)
{
var name = ((ServiceUser)Context.User).Id.Split(':')[1];
var table = GetConnectionTable();
try {
if (!string.IsNullOrEmpty(name))
{
var deleteOperation = TableOperation.Delete(
new SignalRUserStore(name, Context.ConnectionId)
{
ETag = "*"
});
TableOperation retrieveOperation = TableOperation.Retrieve <SignalRUserStore>(name, Context.ConnectionId);
TableResult retrievedResult = table.Execute(retrieveOperation);
SignalRUserStore checkEntity = retrievedResult.Result as SignalRUserStore;
if (checkEntity != null)
{
table.Execute(deleteOperation);
}
}
}
catch (Exception ex) {
//throw;
}
return(base.OnDisconnected(stopCalled));
}
/// <summary>
/// Called when the connection connects to this hub instance.
/// Code taken from:
/// http://www.asp.net/signalr/overview/signalr-20/hubs-api/mapping-users-to-connections
/// </summary>
/// <returns>
/// A <see cref="T:System.Threading.Tasks.Task" />
/// </returns>
public override Task OnConnected()
{
try {
var currentUser = ((ServiceUser)Context.User).Id;
var id = Context.ConnectionId;
var table = GetConnectionTable();
table.CreateIfNotExists();
var entity = new SignalRUserStore(
currentUser.Split(':')[1],
Context.ConnectionId);
var insertOperation = TableOperation.InsertOrReplace(entity);
table.Execute(insertOperation);
}
catch (Exception ex) {
Debug.WriteLine(ex.ToString());
}
return(base.OnConnected());
}