github.com/zubairhamed/canopus ↗
CoAP Client/Server implementing RFC 7252 for the Go Language
Open this visualization on its own page →
Contributors
6
Lines of Code
1,293
From
2015-02-24
To
2017-06-08
About zubairhamed/canopus
Canopus is a Go implementation of the Constrained Application Protocol (CoAP), as defined by RFC 7252. It provides both client and server capabilities for building IoT and constrained device applications. The project supports core CoAP features including basic request-response patterns, resource observation and notification mechanisms, and proxy functionality for bridging CoAP with other protocols.
The implementation includes support for DTLS (Datagram Transport Layer Security) with pre-shared key (PSK) authentication, enabling secure communication over UDP-based connections. The library also features CoAP-to-CoAP and CoAP-to-HTTP proxying capabilities, making it useful for integrating constrained devices with standard web infrastructure. Building the project requires initializing git submodules and compiling OpenSSL locally to support DTLS functionality.
This project is targeted at Go developers working with IoT systems, embedded devices, and constrained networks where CoAP's lightweight nature makes it more suitable than HTTP. The codebase includes example implementations demonstrating basic client-server communication, resource observation, DTLS secured connections, and protocol bridging patterns.