public static async Task <bool> PostMessage(SSEMessage message)
{
Client client;
var cnt = _clients.Count();
if (_clients.TryGetValue(message.clientID, out client))
{
try
{
if (message.payload.message == "DUMMY")
{
client.UpdateAccessTime();
}
else
{
var data = JsonConvert.SerializeObject(message.payload);
await client.WriteAndSend(data);
}
return(true);
}
catch (HttpException)
{
_RemoveClient(client.id);
}
catch (Exception)
{
//also needs to log here
_RemoveClient(client.id);
}
return(false);
}
return(false);
}
public async Task <HttpResponseMessage> Post([FromBody] SSEMessage message)
{
var res = await PostMessage(message);
if (res)
{
var response = Request.CreateResponse(HttpStatusCode.Created);
return(response);
}
return(Request.CreateResponse(HttpStatusCode.NotFound));
}
private static async Task TryGetAndPostMessages(CancellationToken ct)
{
//Demo Test: Generating Random messages at random intervals and send it to clients
var rnd = new Random();
await Task.Delay(rnd.Next(1000, 3000), ct);
if (ct.IsCancellationRequested)
{
return;
}
var clients = _clients.Values.ToArray();
Array.ForEach(clients, async client =>
{
var msg = new SSEMessage {
clientID = client.id, payload = new Payload {
message = getQuote()
}
};
var res = await PostMessage(msg);
});
}
