private static void HandleNotifyMessage(string message, IObserver <NotifyMessage> observer)
{
logger.LogTrace("Received notification message", "Message".As(message));
try
{
var notifyMessage = NotifyMessage.Create(message);
observer.OnNext(notifyMessage);
}
catch (ArgumentException ex)
{
logger.LogWarning(ex, "The received notification message has been discarded.", "Message".As(message));
}
}
/// <summary>
/// Creates a new instance of <see cref="NotifyMessage"/> from notify message.
/// </summary>
/// <param name="message">
/// The notify message received from a device.
/// </param>
/// <returns>
/// A new instance of <see cref="NotifyMessage"/>.
/// </returns>
/// <exception cref="ArgumentException">
/// <paramref name="message"/> is not valid notify message.
/// </exception>
internal static NotifyMessage Create(string message)
{
var notifyMessage = new NotifyMessage();
var lines = message.SplitIntoLines();
if (lines.Count() > 1)
{
var statusString = lines[0];
var headers = ParseHeaders(lines.Skip(1));
if (statusString.StartsWith("notify", StringComparison.OrdinalIgnoreCase))
{
try
{
notifyMessage.Host = headers.GetValue <string>("HOST");
notifyMessage.NotificationType = headers.GetValue <string>("NT");
notifyMessage.NotificationSubtype = ParseNotifyType(headers.GetValue <string>("NTS"));
notifyMessage.USN = headers.GetValue <string>("USN");
notifyMessage.Location = headers.GetValueOrDefault <string>("LOCATION");
notifyMessage.MaxAge = ParseMaxAge(headers.GetValueOrDefault <string>("CACHE-CONTROL"));
notifyMessage.Server = headers.GetValueOrDefault <string>("SERVER");
notifyMessage.BootId = headers.GetValueOrDefault <int>("BOOTID.UPNP.ORG");
notifyMessage.NextBootId = headers.GetValueOrDefault <int>("NEXTBOOTID.UPNP.ORG");
notifyMessage.ConfigId = headers.GetValueOrDefault <int>("CONFIGID.UPNP.ORG");
notifyMessage.SearchPort = headers.GetValueOrDefault <int>("SEARCHPORT.UPNP.ORG");
}
catch (KeyNotFoundException ex)
{
throw new ArgumentException("The given message is not valid notify message", "message", ex);
}
catch (FormatException ex)
{
throw new ArgumentException("The given message is not valid notify message", "message", ex);
}
}
}
return(notifyMessage);
}