Protocol version

IoT Platform supports the Constrained Application Protocol (CoAP) [RFC7252]. For more information, see RFC 7252.

Channel security

IoT Platform uses Datagram Transport Layer Security (DTLS) V1.2 to secure channels. For more information, see DTLS v1.2.

Open-source client reference

For more information, see http://coap.technology/impls.html.

Note If you use third-party code, Alibaba Cloud does not provide technical support.

Alibaba Cloud CoAP agreement

  • Do not use a question mark (?) to set a parameter.
  • Resource discovery is not supported.
  • Only the User Datagram Protocol (UDP) is supported, and DTLS must be used.
  • Follow the Uniform Resource Identifier (URI) standard, and keep CoAP URI resources consistent with Message Queuing Telemetry Transport (MQTT)-based topics. For more information, see MQTT standard.