https://github.com/jkrhb/wot-coap-dns-sd

A Basic WoT CoAP Server supporting DNS-SD
https://github.com/jkrhb/wot-coap-dns-sd

Last synced: 6 days ago
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A Basic WoT CoAP Server supporting DNS-SD

• Host: GitHub
• URL: https://github.com/jkrhb/wot-coap-dns-sd
• Owner: JKRhb
• License: mit
• Created: 2023-02-20T22:39:44.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2024-11-02T18:14:38.000Z (2 months ago)
• Last Synced: 2024-11-25T03:41:44.578Z (about 1 month ago)
• Language: Rust
• Homepage:
• Size: 50.8 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# A Basic WoT CoAP Server supporting DNS-SD

This Repository contains a simple Rust project that provides additional test

results for the

[WoT Discovery specification](https://www.w3.org/TR/wot-discovery).

It demonstrates how to utilize DNS-SD (using Multicast DNS) for discovering

CoAP servers ([RFC 7252](https://www.rfc-editor.org/rfc/rfc7252)) that host

[Web of Things Thing Descriptions](https://www.w3.org/TR/wot-thing-description11/)

(WoT TDs).

## Setup

First you need to make sure that you have

[Rust installed](https://www.rust-lang.org/tools/install).

Then, after cloning the repository, simply type

```sh

cargo run

```

into a terminal of your choice (once you have changed your working directory

to your local copy of the repository).

This will start both a CoAP server and an mDNS daemon, the latter of which

will enable local DNS-Based service discovery (DNS-SD).

## Usage

Once the CoAP server and the mDNS service daemon are running, you can perform

DNS-based service discovery locally to discover the server's TD that is hosted

under `/.well-known/wot`.

Using multicast DNS, you can find the server by browsing for the service

instance using the type `_wot._udp`, which will return the instance name

`wot_coap_dns_sd`.

Looking up the instance name will yield the `td` path mentioned above, a

`scheme` parameter set to `coap`, and a `type` set to `Thing` in the TXT

records, as specified in [section 6.3 of the WoT Discovery specification](https://www.w3.org/TR/wot-discovery/#introduction-dns-sd-sec).

Using this information, you can send a CoAP GET request to the assembled URL

and obtain the (very basic) Thing Description hosted by the CoAP server.

Once you are finished with running the application, you can simply use `Ctrl+C`

to exit it.

## License

```

SPDX-License-Identifier: MIT

```