Go CoAP over TCP Library

Implements RFC-8323 - CoAP over TCP:

• server and client
• simple request/response
• [TODO] observations
• [TODO] TLS integration
• [TODO] WebSocket support

Example server

Example server listens on default port (5683). It exposes resources:

/time
/my-ip
/rfc8323
/tmp
/slow

Build and run

make build
./bin/example-server

Simple command client client

Build and run

make build
./bin/coap-cli

Usage

Usage: coap-cli [options...] <GET|PUT|POST|DELETE|PING> <url> [payload]
Options:
  -cf int
        content format:
          0 - text/plain
          41 - application/xml
          42 - application/octet-stream
          50 - application/json
         (default -1)
  -max-age int
        max age in seconds (default 60)

Examples (with running example server):

./bin/coap-cli GET coap://localhost:5683/time

./bin/coap-cli POST localhost/tmp "test"

./bin/coap-cli GET localhost/tmp

./bin/coap-cli -max-age=3600 -cf=50 PUT localhost/tmp "{'test': 1234}"

License

Apache License, Version 2.0