Hi,
Question about self-link/self-reference of "oic/res":
OCF_Core_Specification_v1.3.1.pdf says:
--------
The “/oic/res” shall list all Resources that are indicated as discoverable (see
section 11.3).
…Conditionally required:
“/oic/res” with an "rt" value of "oic.wk.res" as self-reference, on the
condition that “oic/res” has
to signal that it is observable by a Client.
&
With the self-link, i.e. the Link with "rel" value of "self", “/oic/res” can
have a Link with the target URI of “/oic/res” and indicate itself observable.
--------
I’ve tried to use an Android server for experiment.
OcResourceHandle ocResourceHandle =
OcPlatform.getResourceHandleAtUri("/oic/res");
==> D/OIC_RI_STACK: Found Resource /oic/res
OcPlatform.bindTypeToResource(ocResourceHandle, "oic.wk.res");
==> I/OIC_RI_STACK: Type oic.wk.res already exists
OcPlatform.bindResource(ocResourceHandle, ocResourceHandle);
==> E/OIC_RI_STACK: Added handle equals collection handle
It seems that the self-link has been discussed in
https://jira.iotivity.org/browse/IOT-2742
And the patch in https://gerrit.iotivity.org/gerrit/#/c/22577 for
resource/csdk/stack/src/ocstack.c was proposed to allow “Container to contain
itself”.
But it’s not applied to iotivity-1.3.1 and iotivity-1.4.0-RC1.
Another way to achieve self-link is using
collection(OcRepresentation.addChild): resource/csdk/stack/src/occollection.c
But is it OK to manually modified "/oic/res" ‘s payload?
Thanks.
Best Regards,
ChiaYu
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