public async Task DiscoverAsync(bool clearCached = false)
{
if (clearCached)
{
_logger?.LogDebug($"Clearing device cache");
lock (Devices)
Devices.Clear();
}
// TODO: Cancel previous discovery requests
// Create a discover request message
var payload = new OicRequest
{
Operation = OicRequestOperation.Get,
ToUri = new Uri("/oic/res", UriKind.Relative),
};
using (var handle = _client.GetHandle(payload))
{
lock (_discoverRequests)
_discoverRequests.Add(handle.RequestId);
// Get the handle first and store it before broadcasting request. Reponses may be lost if we don't know our requesting Id.
_logger?.LogDebug($"Creating discovery request with RequestId {handle.RequestId}");
await _client.BroadcastAsync(payload);
}
}
public virtual async Task <OicResponse> RetrieveAsync(OicRequest request)
{
if (Device == null)
{
throw new NullReferenceException($"{GetType().FullName}.{nameof(Device)} cannot be null null");
}
var endoint = Device.Endpoint;
using (var requestiHandle = await _client.SendAsync(request, Device.Endpoint))
{
var response = await requestiHandle.GetReponseAsync() as OicResponse;
return(new OicResourceResponse(_client.Configuration, _client.Configuration.Serialiser.Deserialise(response.Content, response.ContentType)));
}
//using (var results = Device.Configuration.Serialiser.Deserialise(response.Content, response.ContentType)
// .GetEnumerator())
//{
// results.MoveNext();
// var result = results.Current;
// resource.UpdateFields(result);
// // We should not have more than one result in a response to a Retreive.
// if (results.MoveNext())
// throw new InvalidOperationException($"Received multiple objects during {nameof(RetrieveAsync)}");
//}
//return Task.FromResult(response);
}
public virtual Task <OicResponse> DeleteAsync(OicRequest request)
{
throw new NotSupportedException();
}
public virtual Task <OicResponse> CreateOrUpdateAsync(OicRequest request, IOicResource resource)
{
throw new NotSupportedException();
}
