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