https://github.com/nauful/LibUA

Open-source OPC UA client and server library
https://github.com/nauful/LibUA

Last synced: 3 months ago
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Open-source OPC UA client and server library

• Host: GitHub
• URL: https://github.com/nauful/LibUA
• Owner: nauful
• License: apache-2.0
• Created: 2019-04-29T14:41:40.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2024-07-29T22:52:45.000Z (4 months ago)
• Last Synced: 2024-07-30T04:16:20.736Z (4 months ago)
• Language: C#
• Size: 1.52 MB
• Stars: 247
• Watchers: 13
• Forks: 87
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# LibUA

Open-source OPC UA client and server library for .NET Framework and .NET Core based on IEC 62541. Available a library, a demo client and a demo server. Tested and commercially used in industrial applications with commercial vendors' UA servers and clients.

Available as a nuget package for .NET Core (1.0.24):

https://www.nuget.org/packages/nauful-LibUA-core

### Features

- Fully supported OPC UA core client and OPC UA server specification.

- OPC UA binary protocol with chunking.

- Security profiles None, Basic128Rsa15, Basic256, Basic256Sha256, Aes128Sha256RsaOaep (.NET Standard only) and Aes256Sha256RsaPss (.NET Standard only).

- Optimized memory buffers for encoding/decoding large and complex structures to/from raw bytes.

- Support for all message types, node types, and default address space from the UA specification.

- Support for signing and encrypted security profiles.

- Anonymous, user/pass and certificate-based authentication.

- Sessions, subscriptions (data change notifications and custom notifications), custom events and alarming.

- Extendable server address space with hooks for client requests for access control, read handlers, write handlers, etc.

- Support for reads, writes, updates, historical data and aggregation.

- Server instances have low overhead: tested with hundreds of clients performing simultaneous historical reads, data change notification subscriptions and real-time writes.

### License

Standard Apache License 2.0.

- Permissions: Free for commercial use, modification, distribution, patent use and private use.

- Conditions: Credit must be given to this github repository/owner, license and copyright notice, state changes.

- Limitations: No trademark use, no liability, no warranty.

### Errata

The demo client and server applications can create self-signed certificates with sufficient fields for most usage. Remember to move these to the trusted directory on a server when connecting to a server for the first time.