https://app.knowbase.one/vault/rfc/docid/7082
RFC7641: Observing Resources in the Constrained Application Protocol (CoAP)
Internet Engineering Task Force (IETF) K. Hartke Request for Comments: 7641 Universitaet Bremen TZI Category: Standards Track September 2015 ISSN: 2070-1721 Observing Resources in the Constrained Application Pro...