private async Task ReceiveLoop(CancellationToken cancellationToken)
{
using var textReader = new StreamReader(this.stream, messageEncoding);
using var pushbackReader = new PushbackTextReader(textReader);
while (true)
{
cancellationToken.ThrowIfCancellationRequested();
MessageBase message;
try {
message = await TaskExtensions.WhenAny(
MessageBase.ReadMessage(pushbackReader, cancellationToken),
Task.Delay(TimeSpan.FromSeconds(ReceiveTimeoutSeconds), cancellationToken)
.Then(() => (MessageBase)null)
);
} catch (JsonReaderException ex) {
Console.WriteLine(
$"Error reading message, aborting receive loop: {ex.Message}"
);
this.Shutdown();
return;
}
if (message == null)
{
Console.WriteLine("Receive Timeout!");
// a timeout occurred!
this.Shutdown();
return;
}
var hubClient = this.hubContext.Clients.Client(this.hubConnectionId);
if (hubClient == null)
{
Console.WriteLine("Browser Disconnected!");
// Our client disconnected!
this.Shutdown();
return;
}
Console.WriteLine($"Message received: {message}");
await hubClient.ReceiveMessage(message, cancellationToken);
}
}