CoAP: Difference between revisions

Latest revision as of 15:57, 6 February 2015

Constrained Application Protocol (CoAP) est un protocole applicatif d'invocation de requête-réponse pour des réseaux de capteurs sans fil IPv6/LoWPAN, il est en cours de standardisation aupres de l'IETF ( https://datatracker.ietf.org/doc/draft-ietf-core-coap/ )

Motivation : HTTP/REST-like protocol for constrained sensors

128KB FlashRAM and 4KB RAM
Battery consumption (sleep and periodical wakeup)
Interaction
- Request-response
- Subscribe-Notify
REST (READ, WRITE, CREATE, DESTROY)
Resource discovery
- /profile URI multicast + DISCOVER method
Protocol binding
- UDP and UDP Multicast (16-bit sequence number for reliability)
- Optionally TCP without "stop and wait"
Caching
- Important since sleeping mode
- CoAP proxy (for subscription ...)

Client Implementations

Client Implementations

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-[https://datatracker.ietf.org/doc/draft-ietf-core-coap/ Constrained Application Protocol (CoAP)] est un protocole applicatif d'invocation de requête-réponse pour des réseaux de capteurs sans fil IPv6/LoWPAN
+[http://coap.technology/ Constrained Application Protocol (CoAP)] est un protocole applicatif d'invocation de requête-réponse pour des réseaux de capteurs sans fil IPv6/LoWPAN, il est en cours de  standardisation aupres de l'IETF ( https://datatracker.ietf.org/doc/draft-ietf-core-coap/ )
@@ Line 18: / Line 18: @@
 ** CoAP proxy (for subscription ...)
+[http://coap.technology/impls.html La liste des langages implementant le protocole CoAP]
 Client Implementations
@@ Line 23: / Line 25: @@
 Client Implementations
-* Python http://sourceforge.net/projects/coapy/
+* Python http://coapy.sourceforge.net
 * C
 * Java
 ** [[Californium]] Java client and server (and OSGi wrapper bundle)
 * Javascript & [[Node.js]]
+** [[Node-CoAP]]
-** https://github.com/mcollina/node-coap
+** [[Ponte]]