freeopcua | Open Source C++ OPC-UA Server and Client Library | Runtime Evironment library

by FreeOpcUa C++ Version: Current License: LGPL-3.0

X-Ray Key Features Code Snippets Community Discussions(7)Vulnerabilities Install Support

kandi X-RAY | freeopcua Summary

freeopcua is a C++ library typically used in Server, Runtime Evironment, Nodejs applications. freeopcua has no bugs, it has a Weak Copyleft License and it has low support. However freeopcua has 1 vulnerabilities. You can download it from GitHub.

Open Source C++ OPC-UA Server and Client Library.

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Quality

Security

License

Reuse

Support

freeopcua has a low active ecosystem.

It has 620 star(s) with 322 fork(s). There are 84 watchers for this library.

It had no major release in the last 6 months.

There are 108 open issues and 73 have been closed. On average issues are closed in 165 days. There are 19 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of freeopcua is current.

Quality

freeopcua has 0 bugs and 0 code smells.

Security

freeopcua has 1 vulnerability issues reported (0 critical, 1 high, 0 medium, 0 low).

freeopcua code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

freeopcua is licensed under the LGPL-3.0 License. This license is Weak Copyleft.

Weak Copyleft licenses have some restrictions, but you can use them in commercial projects.

Reuse

freeopcua releases are not available. You will need to build from source code and install.

Installation instructions are not available. Examples and code snippets are available.

It has 76154 lines of code, 878 functions and 90 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

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freeopcua Key Features

No Key Features are available at this moment for freeopcua.

freeopcua Examples and Code Snippets

No Code Snippets are available at this moment for freeopcua.

Community Discussions

Trending Discussions on freeopcua

FLask python: Repeated code, issue of overwriting existing endpoint function

Asyncio queues in python and asyncua

Problem in parsing data of a JSON file with Python

Why does my Azure Function performance slows down when making 100 HTTP Requests in one second?

Python opcua module CancelledError

Enable TCP keepalive on port open by another program

How to inherit another object in opc-ua

QUESTION

FLask python: Repeated code, issue of overwriting existing endpoint function

Asked 2021-Aug-19 at 12:11

I am coding an app with Flask python that allows me to manage 2 different motors. One for a solid silos, another one for a liquid silos.

To connect to these motors I am using an OPCUA connection. On my python file, I was repeating the code twice because it's exactly the same process, only the nodeId is changing. For the solid it is ua.NodeId(13,4) and for the other it's ua.NodeId(23,4).

I tried to write the following code:

...

ANSWER

Answered 2021-Aug-19 at 12:11

The error implies that when giving the second annotation flask tries to override the endpoint defined by the first annotation and this is not supported by Flask and seems to miss the purpose of what you were trying to achieve here.

And more generally, endpoints are most commonly used for revers lookup and do not seem to be meant for the use case here.

for more info - What is an 'endpoint' in Flask?

If I understand your goal correctly, this might do the trick:

Source https://stackoverflow.com/questions/68844397

QUESTION

Asyncio queues in python and asyncua

Asked 2021-Jul-31 at 04:36

I'm working with asyncio and asyncua libraries in python 3.8.7 and I want to use asyncio.Queue to pass the data from the async function into the main thread.

However, the issue I encountered is that my queue does not get any messages after the first await.

Here's my example:

...

ANSWER

Answered 2021-Jul-31 at 04:36

This is a bit of a guess on my part, but I think you have a race condition. Here is the while loop in the main thread:

Source https://stackoverflow.com/questions/68597756

QUESTION

Problem in parsing data of a JSON file with Python

Asked 2021-Jul-08 at 09:35

This is my ciao.json that i need to parse some data from it

...

ANSWER

Answered 2021-Jul-08 at 09:35

update json, I changed undefined obj to string.

Source https://stackoverflow.com/questions/68298845

QUESTION

Why does my Azure Function performance slows down when making 100 HTTP Requests in one second?

Asked 2021-Jun-25 at 07:03

My objective is to push data from an Azure IoT Hub to Power Bi. I don't intend to use Stream Analytics, because it's too expensive for my application and I don't really need the additional analytics-stuff. Because of that I wanted to use an Azure Function which sends the data to a streaming dataset endpoint of Power Bi.

Additional infos to the messages the IoT Hub receives:

A message contains ~100 items (Example item: {'NodeId': 'http://Tensegrity-Robotics/#i=6193', 'Value': 0.011972, 'SourceTimestamp': '2021-06-17T14:30:25.035028Z', 'ApplicationUri': 'urn:freeopcua:python:server'})
There are 35 different itemtypes (different NodeId)
Every different itemtype needs to be pushed to a specific streaming dataset endpoint of power bi
The IoT Hub receives a new message every second

The Azure function is written in python and looks like this:

...

ANSWER

Answered 2021-Jun-25 at 07:03

I ran this http trigger function code which is taking average 30ms.

Source https://stackoverflow.com/questions/68031845

QUESTION

Python opcua module CancelledError

Asked 2021-Mar-15 at 12:11

I am currently trying to connect to an OPC UA server, which was set up on my local device as a test environment. The server was not set up by me, it is not implemented in python (think it might be json). I wanted to connect to it using the following code:

...

ANSWER

Answered 2021-Mar-15 at 12:11

From the error it seems the Python client is trying to connect using the UA Binary TCP transport but you have been given an HTTPS endpoint URL.

Perhaps you need to use a different endpoint URL to connect to this server? Maybe it’s opc.tcp://{PCName}:4840/opcua if it’s using the default port.

Source https://stackoverflow.com/questions/66634907

QUESTION

Enable TCP keepalive on port open by another program

Asked 2021-Jan-12 at 23:07

On a Debian machine I'm using an OPCUA server https://github.com/FreeOpcUa/opcua-asyncio. The server does not give the possibility to enable TCP keepalive on the port opened by the server.

Basically, I want to know if it's possible to start the server then in another script, enable the tcp keepalive on that port.

I also found some other information from Redhat https://access.redhat.com/solutions/19029, and https://access.redhat.com/solutions/25773 (requires you to sign up to see the articles). But again I'm still lost as to what to do exactly.

I'll keep reading up on this, but so far I've spent about 10 hours trying to figure out whether it's even possible. So I thought I should ask for some help.

Any advice is welcome, thanks!

...

ANSWER

Answered 2021-Jan-12 at 23:07

For operations of socket of another process socket must be shared from it https://docs.python.org/3/library/socket.html#socket.socket.share or duplicated.

Its easier to patch your server for keepalive.

Source https://stackoverflow.com/questions/65692731

QUESTION

How to inherit another object in opc-ua

Asked 2020-Apr-30 at 03:34

I have a HomeBaseObjectType and a HomeRegionType in my type model as such:

This is my code in python using Freeopcua library:

...

ANSWER

Answered 2020-Apr-30 at 03:34

Ah, we need to specify the objecttype during adding object:

Source https://stackoverflow.com/questions/61514928

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install freeopcua

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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