The OPC Foundation has formally released the OPC Unified Architecture Local Discovery Server to the community.
Please review official site page (https://OPCFoundation.github.io/UA-LDS/) for:
- Overview
- Licensing
Official installations for Windows are built by the OPC Foundation and provided at the OPC Foundation website (https://opcfoundation.org/).
We strongly encourage community participation and contribution to this project. First, please fork the repository and commit your changes there. Once happy with your changes you can generate a 'pull request'.
You must agree to the contributor license agreement before we can accept your changes. The CLA and "I AGREE" button is automatically displayed when you perform the pull request. You can preview CLA here.
OPC UA, empowering the Industrial Internet of Things (IIOT) and Industrie 4.0.
- OPC UA Ansi C Stack 1.04.342. (included) Please review official site page http://opcfoundation.github.io/UA-AnsiC-Legacy.
- CMake version 3.6.2 or later from https://cmake.org/install/.
- Perl
- Windows:
- OpenSSL 1.1.1v was used in development and testing: either built from source (https://www.openssl.org/source/) or as pre-built package, for example from https://slproweb.com/products/Win32OpenSSL.html.
- Bonjour Mdns/dnssd (Multicast Domain Name System) client library (included)
- Linux:
- OpenSSL 1.0.2l and 1.1.1v was used in development and testing : (
sudo apt-get install libssl-dev) (sudo yum install openssl-devel) - Avahi 0.61 (or later) libdnssd compatibility layer: (
sudo apt-get install libavahi-compat-libdnssd-dev) (sudo yum install avahi-compat-libdns_sd-devel)
- OpenSSL 1.0.2l and 1.1.1v was used in development and testing : (
Make sure that openssl is installed or build. See UA-AnsiC build instructions.
Predefined scripts are available based on CMake.
- Windows: build_ualds.bat (Visual Studio Command Shell)
- Linux: build_linux.sh
- Windows: Bonjour Service (576.30.4)
- Linux: Avahi Daemon (0.61 or later)
After a successful build, binary files will be in \bin[config] and should work as is.
Make sure the avahi-daemon on your host system is either disabled or not installed at all. To remove the avahi-daemon from your host run
sudo apt purge avahi-daemon
To only stop and disable the avahi-daemon on your host run
sudo systemctl stop avahi-daemon
sudo systemctl disable avahi-daemon
Finally verify no other service is using the mDNS Port 5353/udp or LDS Port 4840/tcp by running sudo netstat -tulnp.
To run the LDS clone the repository and follow the steps described either in Docker or in Docker Compose.
Regardless of whether Docker or Docker Compose is chosen the LDS will be using three directory mounts to make its data accessible:
./UALDS-data/config: contains the servers config fileualds.conf./UALDS/pki: contains the LDS's public key infrastructure./UALDS/logs: contains all the containers logs files
After completing the prerequisites build and execute the image by running docker compose up -d.
By default the docker-compose.yml defines the network_mode=host to ensure your LDS broadcasts the proper hostname via mDNS in your network.
If you can not use network_mode=host you can comment it out and uncomment the ports and hostname lines within the docker-compose.yml file and enter the correct hostname there.
First build the image using the provided Dockerfile.
docker build -t lds .
Running in host mode (shared network interface with host):
docker run -d -v ./UALDS-data/config:/lds/etc -v ./UALDS-data/pki:/opt/opcfoundation/ualds/pki -v ./UALDS-data/logs:/var/log/ --network host --restart always --name lds lds:latest
Running in a separate docker network (Replace with your actual hostname):
docker run -d -v ./UALDS-data/config:/lds/etc -v ./UALDS-data/pki:/opt/opcfoundation/ualds/pki -v ./UALDS-data/logs:/var/log/ -h <hostname> -p 5353:5353/udp -p 4840:4840 --restart always --name lds lds:latest
The following tree shows the directory layout of this repo:
- /-- ualds LDS platform independent code
- | |- stack OPC UA Ansi C Stack (https://github.com/OPCFoundation/UA-AnsiC-Legacy)
- | ||- stack
- | |||- core Configuration and utilities
- | |||- platforms
- | ||||- linux Platform adaption to OpenSSL and linux API
- | ||||- win32 Platform adaption to OpenSSL and Win32 API
- | |||- proxystub
- | |||- clientproxy Client side top level API (optional)
- | |||- serverstub Server side top level API (optional)
- | |||- securechannel OPC UA secure conversation
- | |||- stackcore Base types and interfaces
- | |||- transport
- | ||||- https HTTPS transport (optional)
- | ||||- tcp OPC TCP Binary transport
- | |- dnssd mdnsresponder (Bonjour) client library (Windows)
- | |- win32 Local Discovery Server Windows platform implementation
- | |- linux Local Discovery Server Linux platform implementation
Required notices for open source software products or components distributed with OPC Foundation's Local Discovery Server (LDS-ME) are identified in the following table along with the applicable licensing information. Additional notices and/or licenses may be found in the included documentation or readme files of the individual third party open source software.
| Provider | Component | Licensing Information |
|---|---|---|
| Apple Computer, Inc. | Bonjour Mdns/dnssd (Multicast Domain Name System) client library | Apache License v2 http://www.apache.org/licenses/LICENSE-2.0.html |
| Open SSL Project | OpenSSL 1.1.1v | The OpenSSL toolkit stays under a double license, i.e. both the conditions of the OpenSSL License and the original SSLeay license apply to the toolkit. See https://www.openssl.org/source/license.html |
| github.com/lathiat/avahi | Avahi 0.61 | GNU Lesser General Public License v2.1 Avahi was developed by Lennart Poettering and Trent Lloyd. It is the result of a merger of Poettering's original mDNS/DNS-SD implementation called "FlexMDNS", and Lloyd's original code called "Avahi" https://github.com/lathiat/avahi/blob/master/LICENSE |