OPC UA

A native Erlang implementation of the OPCUA Binary Protocol.

We use erlang 25 to develop and test this application.

Quick Start

# clone
git clone https://github.com/stritzinger/opcua.git
cd opcua

# you can generate the certificates with
./scripts/generate_certificates.sh

# optionally update the nodesets
./scripts/update_nodeset

You can quickly try it with the erlang shell:

# run default server
rebar3 as server shell

# run default client
rebar3 as client shell

Read the Wiki to learn about the available command line API.

Client-Server Features

We base our development on release v1.04 of the OPCUA specification.

Striked checkboxes are not planned. Empty ones will be added in future.

Encoding

OPC UA Binary
~~OPC UA JSON~~
~~OPC UA XML~~

Transport

OPC UA TCP (opc.tcp)
~~OPC UA HTTPS~~
~~OPC UA XML~~
~~WebSockets~~

Security

Modes

none
sign
sign_and_encypt

Policies

Basic256Sha256
Aes128-Sha256-RsaOaep

Authentication

Anonymous
User Name Password
X509 Certificate

Certificate Validation

x509 validation (signature, validity ecc ...)
Hostname & Application Uri ecc ...
Certificate Revocation Lists (CRL)

Services

The current sets of supported services.

Service Set	Service	Supported
Discovery Service Set	FindServers
	FindServersOnNetwork
	GetEndpoints	Yes
	RegisterServer
	RegisterServer2
Secure Channel Service Set	OpenSecureChannel	Yes
	CloseSecureChannel	Yes
Session Service Set	CreateSession	Yes
	CloseSession	Yes
	ActivateSession	Yes
	Cancel
Node Management Service Set	AddNodes
	AddReferences
	DeleteNodes
	DeleteReferences
View Service Set	Browse	Yes
	BrowseNext
	TranslateBrowsePathsToNodeIds
	RegisterNodes
	UnregisterNodes
Query Service Set	QueryFirst
	QueryNext
Attribute Service Set	Read	Yes
	Write	Yes
	HistoryRead
	HistoryUpdate
Method Service Set	Call
MonitoredItems Service Set	CreateMonitoredItems
	DeleteMonitoredItems
	ModifyMonitoredItems
	SetMonitoringMode
	SetTriggering
Subscription Service Set	CreateSubscription
	ModifySubscription
	SetPublishingMode
	Publish
	Republish
	DeleteSubscriptions
	TransferSubscriptions

PubSub Features

OPCUA PubSub can work with or without an OPCUA client and server.

This component is still in early development on a secondary branch.