added cffi install requirement and devcontainer

MachineDemoServer/Python/.devcontainer/Dockerfile

@@ -0,0 +1,22 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.166.1/containers/python-3/.devcontainer/base.Dockerfile
+
+# [Choice] Python version: 3, 3.9, 3.8, 3.7, 3.6
+ARG VARIANT="3"
+FROM mcr.microsoft.com/vscode/devcontainers/python:0-${VARIANT}
+
+# [Option] Install Node.js
+ARG INSTALL_NODE="true"
+ARG NODE_VERSION="lts/*"
+RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
+
+# [Optional] If your pip requirements rarely change, uncomment this section to add them to the image.
+# COPY requirements.txt /tmp/pip-tmp/
+# RUN pip3 --disable-pip-version-check --no-cache-dir install -r /tmp/pip-tmp/requirements.txt \
+#    && rm -rf /tmp/pip-tmp
+
+# [Optional] Uncomment this section to install additional OS packages.
+# RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+#     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+# [Optional] Uncomment this line to install global node packages.
+# RUN su vscode -c "source /usr/local/share/nvm/nvm.sh && npm install -g <your-package-here>" 2>&1

MachineDemoServer/Python/.devcontainer/devcontainer.json

@@ -0,0 +1,52 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.166.1/containers/python-3
+{
+	"name": "Python 3",
+	"build": {
+		"dockerfile": "Dockerfile",
+		"context": "..",
+		"args": { 
+			// Update 'VARIANT' to pick a Python version: 3, 3.6, 3.7, 3.8, 3.9
+			"VARIANT": "3.7",
+			// Options
+			"INSTALL_NODE": "false",
+			"NODE_VERSION": "lts/*"
+		}
+	},
+
+	// Set *default* container specific settings.json values on container create.
+	"settings": { 
+		"terminal.integrated.shell.linux": "/bin/bash",
+		"python.pythonPath": "/usr/local/bin/python",
+		"python.linting.enabled": true,
+		"python.linting.pylintEnabled": true,
+		"python.formatting.provider": "autopep8",
+		"python.formatting.autopep8Args": [
+			"--max-line-length=200"
+		],
+		"python.formatting.autopep8Path": "/usr/local/py-utils/bin/autopep8",
+		"python.formatting.blackPath": "/usr/local/py-utils/bin/black",
+		"python.formatting.yapfPath": "/usr/local/py-utils/bin/yapf",
+		"python.linting.banditPath": "/usr/local/py-utils/bin/bandit",
+		"python.linting.flake8Path": "/usr/local/py-utils/bin/flake8",
+		"python.linting.mypyPath": "/usr/local/py-utils/bin/mypy",
+		"python.linting.pycodestylePath": "/usr/local/py-utils/bin/pycodestyle",
+		"python.linting.pydocstylePath": "/usr/local/py-utils/bin/pydocstyle",
+		"python.linting.pylintPath": "/usr/local/py-utils/bin/pylint"
+	},
+
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+		"ms-python.python"
+	],
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	"forwardPorts": [ 5000 ],
+	"appPort": 5000,
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	"postCreateCommand": "pip3 install --user -r requirements.txt",
+
+	// Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "vscode"
+}

MachineDemoServer/Python/README.md

@@ -23,6 +23,7 @@ Alarms and Conditions can only be subscribed on the "Messages" node. The Conditi
 ### Requirements
 - Python >= Python 3.7
 - Python opcua-asyncio library >= 0.9.14
+- Python cffi >= 1.14.5
 
 ### Installation and Execution
 With Python installed, the script file can be exuted with `python PythonMachineDemoServer.py`. As an alternative a fully self contained .exe can be created with PyInstaller.
@@ -31,8 +32,10 @@ With Python installed, the script file can be exuted with `python PythonMachineD
 - [Download and install Python](https://www.python.org/downloads/) >= Python 3.7. On installation set checkbox for adding to system path.
 - Install opcua-asnycio library >= 0.9.14 with 
 `pip3 install asyncua` or upgrade with `pip3 install --upgrade asyncua`
-Behind a company proxy you may need to add the proxy server and trust servers. Search for proxy settings and look for the manual proxy server. 
+
+    Behind a company proxy you may need to add the proxy server and trust servers. Search for proxy settings and look for the manual proxy server. 
 `pip3 install --trusted-host pypi.org --trusted-host files.pythonhosted.org --proxy=http://username:password@proxyserver:port asyncua`
+- Install cffi library with `pip3 install cffi`
 
 - Download all files and copy them to a folder. Easiest way is to download all files of the github repository. [Download zip](https://github.com/TRUMPF-IoT/OpcUaMachineTools/archive/main.zip). 
 - Enter the folder containing PythonMachineDemoServer.py and execute the server with `python PythonMachineDemoServer.py`

MachineDemoServer/Python/ReplayConfiguration.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration> 
-    <endpoint url="opc.tcp://localhost:50000"/>
+    <endpoint url="opc.tcp://0.0.0.0:50000"/>
     <execution sourceFileName="recordTruLaserCenter.json" playSpeedFactor="20"/>
 </configuration>   

MachineDemoServer/Python/requirements.txt

@@ -0,0 +1,2 @@
+asyncua
+cffi