libua 官方demo

# LibUA Open-source OPC UA client and server library for .NET and .NET Core based on IEC 62541. Available as source files, a demo client and a demo server. Tested and commercially used in industrial applications with commercial vendors' UA servers and clients. ### Features - Fully supported OPC UA core client and OPC UA server specification. - OPC UA binary protocol with chunking. - Security profiles None, Basic128Rsa15, Basic256 and Basic256Sha256. - 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. ### Platforms .NET 4.5 or .NET Standard 2.0 ### License Free for commercial use under the Apache License 2.0. Please give credit if you find this source useful. ### Errata Here's a more complete certificate if the default certificate created by the demo client/server is insufficient: https://github.com/nauful/LibUA/files/4586442/lubua-clntsrvcert.zip