dtls

This is a tiny fork of https://github.com/bocajim/dtls that works around an issue in the DTLS handshake when connecting to an IKEA Trådfri Gateway.

The rest of this README is identical to the original at the time of the forking.

This package implements a RFC-4347 compliant DTLS client and server. NOTE: This library is under active development and is not yet stable enough to be used in production.

Key Features

Pure go, no CGo
Supports both client and server via UDP
Supports TLS_PSK_WITH_AES_128_CCM_8 cipher RFC-6655
Supports pre-shared key authentication, does not support certificate based authentication
Supports DTLS session resumption
Designed for OMA LWM2M comliance LWM2M

TODO

Implement session renegotiation
Implement packet retransmission for handshake
Implement out of order handshake processing
Implement replay detection
Implement client hello stateless cookie handling
Improve parallel processing of incoming packets
Add interface for custom DTLS session cache storage

Samples

Keystore

	mks := keystore.NewMemoryKeyStore()
	keystore.SetKeyStores([]keystore.KeyStore{mks})
	psk, _ := hex.DecodeString("00112233445566")
	mks.AddKey("myIdentity", psk)

Sample Client

	listener, _ = NewUdpListener(":6000", time.Second*5)
	peer, err := listener.AddPeer("127.0.0.1:5684", "myIdentity")

	err = peer.Write("hello world")
	data, rsp := listener.Read()

Documentation

http://godoc.org/github.com/bocajim/dtls

License

MIT

eriklupander / dtls