private OCEntityHandlerResult OCEntityHandler(OCEntityHandlerFlag flag, OCEntityHandlerRequest entityHandlerRequest, IntPtr callbackParam)
{
OCEntityHandlerResult result = OCEntityHandlerResult.OC_EH_OK;
RepPayload payload = null;
RepPayload requestPayload = entityHandlerRequest.payload == IntPtr.Zero ? null : new RepPayload(entityHandlerRequest.payload);
if (entityHandlerRequest != null && (flag.HasFlag(OCEntityHandlerFlag.OC_REQUEST_FLAG)))
{
switch (entityHandlerRequest.method)
{
case OCMethod.OC_REST_GET:
{
var rpayload = payload = new RepPayload();
rpayload.SetUri(_uri);
foreach (var resource in _resourceProperties)
{
if (requestPayload != null && !requestPayload.Types.Contains(resource.Key))
{
continue;
}
var repayload = new RepPayload(resource.Value);
repayload.Types.Add(resource.Key);
rpayload.Next = repayload;
rpayload = repayload;
}
payload = rpayload;
}
break;
case OCMethod.OC_REST_POST:
case OCMethod.OC_REST_PUT:
{
var p = new RepPayload(entityHandlerRequest.payload);
result = OnPropertyUpdated(p);
PropertyUpdated?.Invoke(this, p);
}
break;
default:
result = OCEntityHandlerResult.OC_EH_METHOD_NOT_ALLOWED;
break;
}
var response = new OCEntityHandlerResponse();
response.requestHandle = entityHandlerRequest.requestHandle;
response.resourceHandle = entityHandlerRequest.resource;
response.ehResult = result;
response.payload = payload == null ? IntPtr.Zero : payload.AsOCRepPayload();
response.numSendVendorSpecificHeaderOptions = 0;
response.sendVendorSpecificHeaderOptions = IntPtr.Zero;
response.resourceUri = string.Empty;
response.persistentBufferFlag = 0;
OCStack.OCDoResponse(response);
}
return(result);
}
private async Task <ClientResponse <Payload> > SendAsync(string resourceTypeName, Dictionary <string, object> data, OCMethod method)
{
var tcs = new TaskCompletionSource <ClientResponse <Payload> >();
var callbackData = new OCCallbackData();
OCClientResponseHandler handler = (context, handle, clientResponse) =>
{
GCHandle.FromIntPtr(context).Free();
if (clientResponse.result > OCStackResult.OC_STACK_RESOURCE_CHANGED)
{
var err = OCStackException.CreateException(clientResponse.result, "Resource returned error");
tcs.SetException(err);
}
else
{
tcs.SetResult(new ClientResponse <Payload>(clientResponse));
}
return(OCStackApplicationResult.OC_STACK_DELETE_TRANSACTION);
};
var gcHandle = GCHandle.Alloc(handler);
callbackData.cb = handler;
callbackData.context = GCHandle.ToIntPtr(gcHandle);
IntPtr payloadHandle = IntPtr.Zero;
if (resourceTypeName != null)
{
RepPayload payload = new RepPayload(data);
payload.SetUri(_resourceUri);
payload.Types.Add(resourceTypeName);
payloadHandle = payload.AsOCRepPayload();
}
var result = OCStack.OCDoRequest(out _handle, method, _resourceUri, _address.OCDevAddr, payloadHandle, OCConnectivityType.CT_DEFAULT, OCQualityOfService.OC_LOW_QOS, callbackData, null, 0);
if (payloadHandle != IntPtr.Zero)
{
OCPayloadInterop.OCPayloadDestroy(payloadHandle);
}
OCStackException.ThrowIfError(result, "Failed to send to resource");
var response = await tcs.Task.ConfigureAwait(false);
return(response);
}
internal RepPayload(IntPtr handle) : this()
{
var ocpayload = Marshal.PtrToStructure <OCRepPayload>(handle);
if (ocpayload.interfaces != IntPtr.Zero)
{
var resource = Marshal.PtrToStructure <OCStringLL>(ocpayload.interfaces);
Interfaces = resource.Values.ToArray();
}
if (ocpayload.types != IntPtr.Zero)
{
var resource = Marshal.PtrToStructure <OCStringLL>(ocpayload.types);
Types = resource.Values.ToArray();
}
if (ocpayload.next != IntPtr.Zero)
{
Next = new RepPayload(ocpayload.next);
}
Values = new IotivityValueDictionary(ocpayload);
}
protected virtual OCEntityHandlerResult OnPropertyUpdated(RepPayload payload)
{
return(OCEntityHandlerResult.OC_EH_OK);
}
internal ResourceObservationEventArgs(DeviceAddress deviceAddress, string resourceUri, RepPayload payload)
{
DeviceAddress = deviceAddress;
ResourceUri = resourceUri;
Payload = payload;
}