public static bool TryParse(string value, out AlarmEvent alarmEvent)
{
alarmEvent = default;
var match = EventRegEx.Match(value ?? string.Empty);
if (match.Success && Enum.TryParse <EventType>(match.Groups["type"].Value, out var eventType))
{
alarmEvent = new AlarmEvent
{
DateTime = DateTime.Parse($"{match.Groups["date"]} {match.Groups["time"]}"),
Type = eventType,
Status = match.Groups["status"].Value == "1",
Numbers = match.Groups["numbers"].Value?.Split(',')
.Select(x => ushort.TryParse(x, out var num) ? num : (ushort?)null)
.Where(x => x.HasValue)
.Select(x => x.Value)
.ToArray() ?? Array.Empty <ushort>()
};
return(true);
}
return(false);
}
protected override async Task RunAsync(CancellationToken cancellationToken)
{
try
{
while (!cancellationToken.IsCancellationRequested)
{
try
{
var settings = ConnectionSettings.Default;
var endpoint = new Uri($"http://{settings.Host}/cgi-bin/alarmchangestate_cgi?user={settings.Username}&pwd={settings.Password}¶meter=MotionDetection;SensorAlarm;SensorOutAlarm");
using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", Convert.ToBase64String(Encoding.ASCII.GetBytes($"{settings.Username}:{settings.Password}")));
client.Timeout = Timeout.InfiniteTimeSpan;
using var response = await client.SendAsync(new HttpRequestMessage (HttpMethod.Get, endpoint), HttpCompletionOption.ResponseHeadersRead, cancellationToken).ConfigureAwait(false);
using var body = await response.Content.ReadAsStreamAsync().ConfigureAwait(false);
using var reader = new StreamReader(body);
while (!cancellationToken.IsCancellationRequested)
{
var line = await reader.ReadLineAsync().WithTimeout(TimeSpan.FromSeconds(15)).ConfigureAwait(false);
if (AlarmEvent.TryParse(line, out var alarmEvent))
{
try
{
_events.OnNext(alarmEvent);
}
catch { }
}
await Task.Delay(100, cancellationToken).ConfigureAwait(false);
}
}
catch
{
await Task.Delay(RetryDelay, cancellationToken).ConfigureAwait(false);
}
}
}
catch (OperationCanceledException)
{
return;
}
}
