COAP agreement

RFC 7252 restricted application protocol is supported. Please refer to RFC 7252 for details.

Access safety

Use dtls v1.2 to ensure the channel safety. See dtls v1.2 for details.

Open source client

http://coap.technology/impls.html 。

COAP agreement

Only UDP protocol is supported. At present, dtls and symmetric encryption are supported.

Uri specification. The URI resource of COAP is consistent with mqtt topic. See mqtt specification.

Description and limitations

The topic specification is consistent with mqtt topic, within the COAP protocol coap://host The: port / topic / ${topic} interface can be reused for all ${topic} and mqtt topics.

The token returned by the client cache authentication is the requested token.

The size of data transferred depends on the size of MTU, and it is recommended to be less than 1 KB.