/// <summary>
/// Begin listening for message events from the server.
/// </summary>
private async Task beginFetchingMessages()
{
while (keepFetchingMessages)
{
try
{
//Get channel events
//When calling await, control is passed back to the caller, so this while loop does not block the UI thread
IEnumerable <ChannelEventDTO> channelEvents =
await channelsApi.GetChannelEventsAsync((int)currentChannelId, latestEventTime, messageFetchCancellation.Token);
handleChannelEvents(channelEvents, messageFetchCancellation.Token);
}
catch (TaskCanceledException)
{
Console.WriteLine("The live message fetch task was canceled");
}
catch (HttpOperationException er)
{
new ErrorDialog(er.Response.ReasonPhrase, er.Response.Content).ShowDialog();
}
}
}
/// <summary>
/// Wait for and get new messages, message deletions, message edits, channel
/// information updates, and channel deletions in a channel
/// </summary>
/// <remarks>
/// This request will not return from the service until at least one new
/// channel event has occurred
/// </remarks>
/// <param name='operations'>
/// The operations group for this extension method.
/// </param>
/// <param name='channelId'>
/// The id of the channel to listen to
/// </param>
/// <param name='since'>
/// The time to get channel events since
/// </param>
public static IList <ChannelEventDTO> GetChannelEvents(this IChannels operations, int channelId, System.DateTime since)
{
return(operations.GetChannelEventsAsync(channelId, since).GetAwaiter().GetResult());
}