CoRE RD Endpoint and Lookup Client

Library for interacting as endpoint and lookup client with CoRE Resource Directories. More...

Detailed Description

Library for interacting as endpoint and lookup client with CoRE Resource Directories.

About

The cord ([Co]RE [R]esource [D]irectory) module provides endpoint and lookup client functionality for interacting with CoRE Resource Directories (RDs) as defined in RFC 9176.

See also

https://datatracker.ietf.org/doc/html/rfc9176

RFC 9176 defines two types different roles for nodes when interacting with a RD:

• endpoint: registers and manages entries at the RD
• client: performs different kind of lookups

            Registration     Lookup, Group
            Interface        Interfaces
+----+          |                 |
| EP |----      |                 |
+----+    ----  |                 |
              --|-    +------+    |
+----+          | ----|      |    |     +--------+
| EP | ---------|-----|  RD  |----|-----| Client |
+----+          | ----|      |    |     +--------+
              --|-    +------+    |
+----+    ----  |                 |
| EP |----      |                 |
+----+

Figure copied form RFC 9176.

Note

In the context of this module, we refer to these roles as endpoint (ep) and lookup client (lc). This should hopefully prevent some confusion in conjunction with the client and server roles as defined by CoAP.

Structure

This module is structured in a number of submodules with goal to reflect the different roles described in RFC 9176:

• cord_ep: standard endpoint implementation following the rules as defined i.a. in sections 4.3 and 5
• cord_epsim: endpoint implementation following the simple registration procedure as defined in section 5.1
• cord_lc: lookup client implementation for querying information from an RD using the lookup interfaces
• cord_config: header file collection (default) configuration values used throughout this module
• cord_common: shared functionality used by the above submodules

Modules
	CoRE RD Common
	Shared functionality for CoRE Resource Directory endpoints.
	CoRE RD Configuration
	Configuration options for CoRE RD endpoints and lookup clients.
	CoRE RD Endpoint
	Library for using RIOT as CoRE Resource Directory endpoint.
	CoRE RD Lookup Client
	Library for using RIOT as CoRE Resource Directory (RD) lookup client.
	CoRE RD Simple Registration Endpoint
	CoRE Resource Directory endpoint using the simple registration procedure.