Crate opcua_server

A general implementation of an OPC-UA server.

Support for subscriptions, complex address spaces, methods, all OPC-UA services, node set import, and more.

The server starts a tokio task for each connection, and another task for each incoming service call.

See docs for the main opcua crate for details on usage.

Modules

address_space

Implementation of AddressSpace, and in-memory OPC-UA address space.

authenticator

The AuthManager trait, and tooling related to this.

constants

Contains constaints for default configuration values. These are for the most part possible to override through server configuration.

diagnostics

This module contains the diagnostics node manager, and related types.

node_manager

The NodeManager trait, as well as utilities related to calling services on this, and tooling for implementing custom node managers.

Macros

load_method_args

Convenient macro for performing an implicit cast of each argument to the expected method argument type, and returning the arguments as a tuple.

Structs

CertificateValidation

Configuration for certificate validation.

ContinuationPoint

Representation of a dynamic continuation point. Each node manager may provide their own continuation point type, which is stored by the server. This wraps that value and provides interfaces to access it for a given node manager.

CreateMonitoredItem

Container for a request to create a single monitored item.

EndpointIdentifier

Unique ID of an endpoint.

HistoryServerCapabilities

History capabilities. As all history is implemented by custom node managers, this should be set according to what your node managers support.

Limits

Server limits configuration.

MonitoredItem

State of an active monitored item on the server.

MonitoredItemHandle

Unique identifier for a monitored item on the server.

OperationalLimits

Limits on service calls.

Server

The server struct. This is consumed when run, so you will typically not hold onto this for longer periods of time.

ServerBuilder

Server builder, used to configure the server programatically, and for setting core components like node managers, authenticator, and type collections.

ServerCapabilities

Server capabilities object.

ServerConfig

Server configuration object.

ServerEndpoint

A configured server endpoint.

ServerHandle

Reference to a server instance containing tools to modify the server while it is running.

ServerInfo

Server state is any configuration associated with the server as a whole that individual sessions might be interested in.

ServerStatusWrapper

Wrapper for managing the ServerStatus variable on the server.

ServerUserToken

User token handled by the default authenticator.

SessionSubscriptions

Subscriptions belonging to a single session. Note that they are technically owned by a user token, which means that they can be transfered to a different session.

Subscription

A single subscription maintained by the server.

SubscriptionCache

Structure storing all subscriptions and monitored items on the server. Used to notify users of changes.

SubscriptionLimits

Subscription-related limits.

TcpConfig

Configuration for the TCP transport.

Enums

IdentityToken

Identity token representation on the server, decoded from the client.

SubscriptionState

Current internal state of the subscription.

Constants

ANONYMOUS_USER_TOKEN_ID

Token ID for the anonymous user token.

Traits

EventField

Trait implemented by any type that can be a field in an event.