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README.md

Use simple-server as reference for a very simple OPC UA server.

Use demo-server (this project) for a more full-featured server that demonstrates the following.

  • Exposes static and dynamically changing variables
  • Variables of every supported data type including arrays
  • Events
  • Http access to diagnostics and other info
  • More sophisticated logging and data capture
  • Be used for testing / verification purposes

The demo-server enables the http feature in opcua-server so it can display metrics from http://localhost:8585, however you must start it from the demo-server directory so it can find its html and other resources.

cd opcua/samples/demo-server
cargo run

Testing configuration

If you are using the demo server for testing a client you must do a few things depending on what you're testing against.

  1. Copy sample.server.test.conf to ../server.test.conf. The demo-server will load this file if it exists.
  2. Edit ../server.test.conf
  3. Set tcp_config.host and discovery_urls to the IP address of the server host. Do not set it to localhost
  4. Set create_sample_keypair to false
  5. Generate a PKI keypair that is acceptable to your test environment and matches the IP address you set in the config. Copy this to pki/own/cert.der and pki/private/private.pem.

Troubleshooting

  • It is best to try opening Project settings in test harness and browsing to server first to ensure trust is possible, and to troubleshoot any basic connection issues.
  • Check logs if certs are rejected.
  • If you get BadCertificateTimeInvalid returned to the test harness, try setting check_time to false in the server.test.conf. For some reason test harness uses certs which can be out of date.
  • If the network is IPv6, use 127.0.0.1 instead of the machine name or localhost

Run using Docker

If you want to build the demo server and don't have a development environment then another option is to use docker as follows:

cd opcua
docker build -t opcua-rs/demo-server:latest . -f samples/demo-server/Dockerfile

And then to run it:

docker run -d opcua-rs/demo-server:latest