public abstract Task HandleReceivedMessage(OicReceivedMessage message);
public override async Task HandleReceivedMessage(OicReceivedMessage received)
{
var isDiscoverResponse = false;
lock (_discoverRequests)
isDiscoverResponse = _discoverRequests.Contains(received.Message.RequestId);
if (!isDiscoverResponse)
{
_logger?.LogTrace($"Request ({received.Message.RequestId}) was not intended for {nameof(OicResourceDiscoverClient)}");
if (Handler != null)
{
await Handler.HandleReceivedMessage(received);
}
return;
}
var response = received.Message as OicResponse;
if (response.ResposeCode != OicResponseCode.Content)
{
_logger?.LogInformation($"Response to discover request resulted in {response.ResposeCode:G}");
_logger?.LogInformation(_configuration.Serialiser.Prettify(response.Content, response.ContentType));
return;
}
var resources = _configuration.Serialiser.Deserialise(response.Content, response.ContentType) as OicResourceList
?? throw new OicException($"Incorrect response for /oic/res request");
//Todo: Review Resource Directory (OIC Core v1.1.1: Section 11.3.6.1.2 Resource directory)
foreach (var resource in resources)
{
var newDevice = false;
if (!(resource is OicResourceDirectory directory))
{
_logger?.LogError($"{nameof(resource)} ({resource.GetType()}) is not of type {typeof(OicResourceList)}. Skipping");
continue;
}
OicRemoteDevice device = null;
lock (Devices)
device = Devices.FirstOrDefault(d => d.DeviceId == directory.DeviceId);
if (device == null)
{
_logger?.LogDebug($"Discovered new device ({directory.DeviceId})");
device = new OicRemoteDevice(received.Endpoint)
{
DeviceId = directory.DeviceId
};
lock (Devices)
Devices.Add(device);
newDevice = true;
}
else
{
_logger?.LogDebug($"Updating existing device ({directory.DeviceId})");
}
// Update device name
device.Name = device.Name ?? directory.Name;
// Add or update device resources
// TODO: Do we want to clear out old resources?
var newResources = directory.Links.Select(l => l.CreateResource(_configuration.Resolver));
foreach (var newResource in newResources)
{
var oldResource = device.Resources.SingleOrDefault(r => r.RelativeUri == newResource.RelativeUri);
if (oldResource == null)
{
device.Resources.Add(newResource);
}
else
{
oldResource.UpdateFields(newResource);
}
}
if (newDevice)
{
NewDevice?.Invoke(this, new OicNewDeviceEventArgs {
Device = device, Endpoint = received.Endpoint
});
}
}
}