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Merge pull request #12635 from kb2ma/gcoap/obs_attribute_doc

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net/gcoap: refine doc for 'obs' link attribute
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Leandro Lanzieri 2019-11-03 18:13:45 +01:00 committed by GitHub
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sys/include/net/gcoap.h
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@ -155,12 +155,13 @@
* take any action to support Observe client registration. However, gcoap
* limits registration for a given resource to a _single_ observer.
*
* It is [suggested] (https://tools.ietf.org/html/rfc7641#section-6) that a
* It is [suggested](https://tools.ietf.org/html/rfc7641#section-6) that a
* server adds the 'obs' attribute to resources that are useful for observation
* (i.e. will produce notifications) as a hint. Keep in mind that this is not
* mandatory in order to enable the mechanism in RIOT, nor will prevent a client
* from observing a resource that does not have this attribute in the link
* description.
* mandatory in order to enable the mechanism in RIOT, nor will it prevent a
* client from observing a resource that does not have this attribute in the
* link description. See the "Resource list creation" section above for how the
* gcoap example app publishes the obs attribute.
*
* An Observe notification is considered a response to the original client
* registration request. So, the Observe server only needs to create and send