public async void GetUpdateForItem(int itemNo)
{
Response.ContentType = "text/event-stream";
var item = new Item();
item.Id = itemNo;
UpdateInfo result;
do
{
result = _stateChecker.GetUpdate(item);
Thread.Sleep(3000);
if (!result.New)
{
continue;
}
await HttpContext.Response.WriteAsync("event: message\n");
await HttpContext.Response.WriteAsync("data:" + result.Update + "\n\n");
await HttpContext.Response.Body.FlushAsync();
} while (!result.Finished);
Response.Body.Close();
}
public IActionResult GetUpdateForItem(int itemNo)
{
var item = new Item();
item.Id = itemNo;
var result = _stateChecker.GetUpdate(item);
if (result.New)
{
return(new ObjectResult(result));
}
return(NoContent());
}
public async Task GetUpdateForItem(int itemNo)
{
var item = new Item();
item.Id = itemNo;
UpdateInfo result;
do
{
result = _stateChecker.GetUpdate(item);
Thread.Sleep(1000);
if (result.New)
{
await Clients.Caller.SendAsync("ReceiveItemUpdate", result.Update);
}
} while (!result.Finished);
await Clients.Caller.SendAsync("Finished");
}
private async Task SendEvents(WebSocket webSocket, Item item)
{
UpdateInfo result;
do
{
result = _stateChecker.GetUpdate(item);
Thread.Sleep(2000);
if (result.New)
{
var jsonMessage = $"\"{result.Update}\"";
await webSocket.SendAsync(buffer : new ArraySegment <byte>(
array: Encoding.ASCII.GetBytes(jsonMessage),
offset: 0,
count: jsonMessage.Length),
messageType : WebSocketMessageType.Text,
endOfMessage : true,
cancellationToken : CancellationToken.None);
}
} while (!result.Finished);
}
public IActionResult GetUpdateForItem(int itemNo)
{
var item = new Item();
item.Id = itemNo;
UpdateInfo result;
int i = 0;
do
{
result = _stateChecker.GetUpdate(item);
Thread.Sleep(3000);
i++;
} while (!result.New && i < 3);
if (result.New)
{
return(new ObjectResult(result));
}
return(NoContent());
}
