private static void HandleSearchResponseMessage(string message, IObserver <SearchResponseMessage> observer)
{
logger.LogTrace("Received search response message", "Message".As(message));
try
{
var responseMessage = SearchResponseMessage.Create(message);
observer.OnNext(responseMessage);
}
catch (ArgumentException ex)
{
logger.LogWarning(ex, "The received M-Search response has been ignored.", "Message".As(message));
}
}
/// <summary>
/// Creates a new instance of <see cref="SearchResponseMessage"/> from the M-Search response.
/// </summary>
/// <param name="message">
/// The response received for M-Search request.
/// </param>
/// <returns>
/// A new instance of <see cref="SearchResponseMessage"/>.
/// </returns>
/// <exception cref="KeyNotFoundException">
/// One of the reuqired headers not found.
/// </exception>
/// <exception cref="ArgumentException">
/// The <paramref name="message"/> is not valid search repsonse message.
/// </exception>
internal static SearchResponseMessage Create(string message)
{
var response = new SearchResponseMessage();
var lines = message.SplitIntoLines();
if (lines.Count() > 1)
{
var statusString = lines[0];
if (StringComparer.OrdinalIgnoreCase.Compare(statusString, "HTTP/1.1 200 OK") == 0)
{
var headers = ParseHeaders(lines.Skip(1));
try
{
response.MaxAge = ParseMaxAge(headers.GetValue <string>("CACHE-CONTROL"));
response.Location = headers.GetValue <string>("LOCATION");
response.SearchTarget = headers.GetValue <string>("ST");
response.Server = headers.GetValue <string>("SERVER");
response.USN = headers.GetValue <string>("USN");
response.BootId = headers.GetValueOrDefault <int>("BOOTID.UPNP.ORG");
response.ConfigId = headers.GetValueOrDefault <int>("CONFIGID.UPNP.ORG");
response.SearchPort = headers.GetValueOrDefault <int>("SEARCHPORT.UPNP.ORG");
// TODO: Parse Date
////message.Date = headers.GetValueOrDefault<string>("DATE");
}
catch (KeyNotFoundException ex)
{
throw new ArgumentException("The given message is not valid search response message", "message", ex);
}
catch (FormatException ex)
{
throw new ArgumentException("The given message is not valid search response message", "message", ex);
}
}
else
{
throw new ArgumentException("The given message is not valid search response message", "message");
}
}
else
{
throw new ArgumentException("The given message is not valid search response message", "message");
}
return(response);
}