SignalR chat on azure - azure

I have created a small and simple chat with signalr on a azure website. That doesn't work as expected.
After some hours on Google I found out, that signalr should be implemented different on Azure.
What is best practise?
Any good examples?
It should work on both mobile and in normal browsers.

Per the docs at: http://www.asp.net/signalr/overview/deployment/using-signalr-with-azure-web-sites
Deploying a SignalR Web App to Azure App Service
SignalR doesn't add any particular complications to deploying an
application to Azure versus deploying to an on-premises server. An
application that uses SignalR can be hosted in Azure without any
changes in configuration or other settings (though for WebSockets
support, see Enabling WebSockets on Azure App Service below.)...

To get signalr working when deploying to azure, I had to use
appBuilder.SetDataProtectionProvider(new MachineKeyProtectionProvider());
inside my Startup.cs Configure() method.
link to MachineKeyProtectionProvider gist
This is actually a workaround to this problem but it seems to work.
Follow this link : ASP.NET 5 app in Azure doesn't work with SignalR

Related

Why should I prefer Azure App Service over .NET REST Web API?

Why should I use Azure App Service and not just implement a common .NET RESTful Web API backend?
What's the explicit benefit of this service compared to a common .NET RESTful Web API backend hosted on Azure?
An Azure App Service is a place to host your web application or API. Normally when you have a .NET web API you host it behind IIS or something on a virtual machine.
Azure helps you with these common scenarios wit Platform as a Service (PaaS). An App Service completely abstracts the operating system and the way you host your web application.
App Service can host web apps both on Windows and Linux. You can use all kinds of frameworks such as PHP, .NET or Java. You can even host containers without worrying about the host.
A good sample to start with hosting your .NET Web App on Azure App Services can be found here: Quickstart: Create an ASP.NET Core web app in Azure
Yes, there is a huge difference between Azure App Service and .Net REST WebAPI backend on Azure.
Hosting on Azure can be done using two ways
Create your own VM, then install IIS and do all the required stuff
Use AppService Plan
AppService Plan allows you to leverage the powerful functionality of Azure. Here a separate VM is not assigned to you. Azure App service can scale automatically depending upon the Scaling rule which is not present in restful API hosted on Azure VM.
My question blatantly was a stupid Newbie question, and as such, I'm afraid it is non-sense, which I now know by the answers you've given.
I'm currently reading the book "Azure and Xamarin Forms" to learn Xamarin and Azure. Apparently it's outdated. It suggests to "create a Mobile App on Azure". From the book that Mobile App is just a plain App Service running a RESTful Web API with EF, but utilizing completely different namespaces to do so.
My question targeted towards these other namespaces. I didn't see a reason for them.
Apparently, Microsoft noticed the same. There is no "Mobile App" available in the Azure Marketplace anymore.
Azure App Service is a PaaS solution from Microsoft hosted on Azure. You can think of Azure App Service as some sort of "Micrsoft Heroku", because they work on a similar fashion. For many REST Projects, it can save you hours, if not DAYS of development. It has automatic TLS like heroku, but it is hosted on Azure instead of AWS and it can integrate very well with your existing Azure resources. One common pattern is to host the REST API on App Service and use a database service from Azure such as Azure SQL or Cosmos DB (which is a NoSQL service that, from the point of view of your app, it operates as MongoDB, but can be configured to behave as other DBMS).

Push Notification in .Net core 2.1 MVC hosted in WebApp

I am creating my website application in .net core 2.1. I have to deploy it in WebApp of Azure.
I am bit new to WebApp so not sure if I need to enable any service or any port on WebApp so Notfication works.
Otherwise normal way to show Notification is SignalR implemented.
1) Will SignalR will work for website hosted in WebApp?
If any Azure service that will do same please suggest
SignalR uses web sockets to connect with clients, so you will need to go into app settings and enable them for SignalR to work.
Here is a tutorial to help you set up your WebApp with SignalR:
https://learn.microsoft.com/en-us/aspnet/core/signalr/publish-to-azure-web-app?view=aspnetcore-2.2
Based on your scenario, Azure SignalR Service or Azure Notification Hub may be an option for you.
There is notification service in Azure Web Apps around sending push notification to Mobile Devices that are integrated with Azure.
In your case i assume you are talking about sending real time notifications within the web app ? Yes SignalR works great for that scenario , and you can look into dedicated SignalR service from Azure for this.
https://azure.microsoft.com/en-au/services/signalr-service/

Azure : Deploy Angular(Front-End) & Node (Back-End) app without VM

I am new to Azure. I have never used azure. So don't mind if this is some silly question.
I have a client who also doesn't know much about deploying.
I have angular/node apps. He wants to host on Azure WITHOUT using a VM.
I am not sure about azure. So i don't know how to deploy without VM.
I know to deploy with RDP(Remote Desktop).
Can anyone help me with this. Is there a way to deploy angular & node app without VM?
Is there any specific documentation for it? Which services will i need in Azure?
Thanks in advance!
Except Azure VM, there are normally two ways to deploy Node.js app on Azure which include App Service - Web Apps and Web Apps for Containers, please see the links below to know these guides.
For deploying Node.js app on Azure Web Apps.
Create a Node.js web app in Azure
Tutorial: Build a Node.js and MongoDB web app in Azure
To deploy the app with a ZIP file, or via FTP, cloud sync, or deploy continuously, or from local Git, etc. You can see more at the left sidebar of these pages.
For deploying Node.js app on Azure Web App for Containers, it's a simple way to deploy the app on Azure as similiar as on local docker.
Create a Node.js web app in Azure App Service on Linux
Build a Node.js and MongoDB web app in Azure App Service on Linux
To deploy via FTP, cloud sync, or deploy continuously, or from local git, etc. Also, you can see more at the left sidebar of these pages.
Some important tools will help deploying easier.
Deploy via VSCode, you can refer to these offical documents for WebApp(App Services) or Container(Docker Images).
To deploy on WebApp not Container, Kudu is a common tool for debuging and deployment. Meanwhile, for Node.js app, we need to use iisnode to connect IIS as revese proxy for your app, and configure the web.config file via follow the kudu wiki document. The Kudu wiki is very useful and valuable for new to Azure.
There are more details for this topic which can not be listed one by one at here, but the above these are necessary. The offical guide for Javascript developers is helpful for new to Azure.
Jay Gong posted a great answer for hosting on Azure. However, you might want to ask your client if s/he means s/he wants a micro services architecture. For more information on micro services, check out this link.
The other viable option would be an App Service (which is an Azure service that manages deployment and abstracts a lot away, but there's a VM under the hood)? Without a VM for hosting, it would be rather difficult to do anything in the cloud on Azure - the only other option is local hosting, which would be without Azure. I would argue that it ruins the purpose of using cloud services, as it seems your client is confused.

Web API app with OWIN 'SystemWeb' on Azure App Service

I am creating app which uses Identity 2.1.0 framework in .NET. I started project in Visual Studio 2015 as Empty Web App (template). Now, I use Microsoft.AspNet.WebApi.Owin, and also Microsoft.Owin.Host.SystemWeb NuGet packages in my project. I understand that OWIN is a specification made to avoid monolithic frameworks and to specify how smaller application components interact with servers. However, I have requirement to deploy to Azure App Services.
I have found examples (blogs) where people deploy OWIN Web Api app as self-hosted to the Azure Cloud Services worker role. But I don't want this, as I don't use Cloud Service.
Since I am using Microsoft.Owin.Host.SystemWeb, am I going to be able to deploy this to Azure App service (which I assume manages internal IIS instance) ?
.NET ecosystem newbie here - so please excuse me for any possible redundancies in the question.
Microsoft.Owin.Host.SystemWeb is designed for hosting in IIS and all Azure App Service web apps are hosted in IIS, so this is exactly what you want (In fact, self-hosting likely won't work with Azure App Service).

Azure Service Bus Relay and node.js

We've been writing services to access our on-premises databases through Azure Service Bus Relay for awhile now. That means that we've had to deploy them as WCF services. Our web site development is moving to node.js and I would like to begin deploying our API services on node as well. However, while the Azure NPM package has good support for queues/topics on Azure Service Bus, I can find no mention of the relaying capabilities. I've had a look at the code for the Azure SDK on github, but again, relay seems to be conspicuously absent.
Is it possible to use Azure Service Bus Relay with a node.js backend?
Now Azure support Node.js. You can find the infomration from here. This link is the samples for Node.js.
Right now, Relay only supports a WCF service. You can try to use Clemens Vasters' post on Port Bridge to get your scenario working. In his post, he describes creating a WCF client / service that will forward requests to a specific port.

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