I encountered encryption error when connecting huawei cloud SASS. I communicated with Huawei technical personnel at that time, but there was no encryption error. Sample code for Net Core
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My department is coming from a .NET 4.8 wcf/wpf client/server architecture world. But times change and there a new requirements on connecting .NET back-ends to web applications, mobile apps and (also) desktop applications. We have experience on how to transfer messages from back-end to clients, as we implemented our own net. TCP message broker.
And here comes the first main topic of my question:
#1 Is the usage of a google protobuf/amqp event broker the right way to connect micro-services with all kind of clients (web, mobile, desktop), as well as with other back-end components?
My current investigation led me to 3 products:
RabbitMQ with its amqp
NATS/STAN with a google protobuf message protocol including event storage in MySQL/Postegres
Eventstore with google protobuf message protocol including event storave in an own database system
Which leads me to my second question:
#2 What experience did you make with any of these products? Any pros, cons or snares?
We don't need any clustered systems or highly scalable solutions, as every customer has its own encapsulated system with < 40 clients. But we want a reliable message/event transmission (which should be achieved by any of the 3 mentioned brokers).
BR Christian
How should I access a serial port on a client PC from a webpage in a production environment?
Ideally coded in C# and client Blazor, but any suggestions very welcome.
Any example applications on the web?
Web Serial API and Javascript option works in Chrome if you enable the experimental option: "Experimental Web Platform features" : Enables experimental Web Platform features that are in development. – Mac, Windows, Linux, Chrome OS, Android. #enable-experimental-web-platform-features
https://bugs.chromium.org/p/chromium/issues/detail?id=884928
Being experimental precludes use in a production environment till it is formally released (experimental licence must be renewed every 6 weeks, expires in September 2020 and the functionality can be removed by Google at any time.)
So far the only solution I can think of is to create an ASP.NET Core Service application that must be installed on the client and the webpage application must connect to this local API to use the local serial port.
Any technical issues that would prevent this service approach from working? Other approaches I should consider.
The web application will be designed to interface with a central/upper arm blood pressure monitor that outputs large XML (or JSON) results after each measurement. The measurements will be saved into a "cloud" service for research and patient monitoring.
Thank you in advance for suggestions and comments.
I need a biometric (RFID or FINGER PRINT or face recognition) system which could consume web api directly - being independent of third party. I got some CAMS biometric unit and ZKTECO K20 pro model these could send data to server but we must go through their data server and need to expose the API. I want biometric system that could send activity data to my server.
This is required to develop a system to control attendance of branches from cooperate office. Here I need some suggestion of biometric system. I got
You can install a biometric device with its default software on your computer. The software stores the attendance data in your local database. You can develop a software to read the data from the local database and update your server on a schedule.
Online SDK is restricted from the manufacturers as it may lead to the security issues. As it is online based, anyone can access the anyone's biometric device if the online SDK has been exposed. So it is kept as confidential by the manufacturers CAMS and ZKTeco.
You can make your CAMS devices to communicate with your server directly, Below is the text snippet taken from their API documentation link: http://camsunit.com/application/biometric-web-api.html
Want to receive data without coming through CAMS Dataserver?
Yes. We provide the windows lite version protocol engine which should be
installed at your windows server. Once its installed, You web api
endpoints will start getting triggered whenever attendance is
registered at the device
I am trying to port Azure IoT SDKs for C to STM32 controller. I am using wolfSSL library for TLS version 1.2 and I am able to build the code successfully in OpenSTM32 environment.
But, after establishing successful connection with Azure server, I am unable to establish TLS handshake with the server.
I am using OpenSTM32’s example user_settings.h file from wolfSSL library to build wolfSSL library.
Do I need to make any additional changes in the WolfSSL library to use it with Azure?
OR
Is there any other TLS library, which can be used with Azure IoT SDK for C and STM32 controller?
I have managed to get it working.
There were issues with the buffer sizes and server timeouts.
Increasing the buffer size and optimizing the sending logic solved the issue.
Now, I am able to access every functionality of Azure IoT SDK for C !
When attempting to read Heart Rate Sensor from a Microsoft Band paired with a Raspberry Pi2 running latest Windows IoT Core (10586). I get an exception when calling:
“bandClient.SensorManager.HeartRate.RequestUserConsentAsync()”
It would seem that the IoT Core does not contain the necessary libraries to create the popup dialog that is seen on other devices when executing this method.
Are there plans to extend the Band SDK to support Windows IoT Core in this scenario?
Are there any proposed workarounds?
Thank you,
Paul
Windows 10 IoT is currently not supported by the Microsoft Band SDK. In particular, the user consent prompts run on the device that the band is paired with and in this case the required APIs for user prompts are not supported in the Windows 10 IoT Core APIs.
If you require this in a future release of the SDK please open a request at the Microsoft Health User Voice page https://microsofthealth.uservoice.com