ASP.Net Core in Centos 7

Microsoft recently launched .Net Core for Linux.  .Net core in Linux provides the same performance as that of Windows.

.Net core can be installed in RHEL 7, Ubuntu 14/16, Debian 8, Centos 7, Fedora 23, openSUSE 13.

Installation in Centos 7 is easy.

yum install libunwind libicu
curl -sSL -o dotnet.tar.gz https://go.microsoft.com/fwlink/?LinkID=827529
mkdir -p /opt/dotnet
tar zxf dotnet.tar.gz -C /opt/dotnet

Lets bootstrap a small .Net project.

cd /usr/local/src/
mkdir hwapp
cd hwapp
dotnet new

Great! Now you have created a new C# project in /usr/local/src/hwapp

Lets create a small web app.

Edit project.json file to include the Kestrel HTTP server package as dependency

{
  "version": "1.0.0-*",
  "buildOptions": {
    "debugType": "portable",
    "emitEntryPoint": true
  },
  "dependencies": {},
  "frameworks": {
    "netcoreapp1.0": {
      "dependencies": {
        "Microsoft.NETCore.App": {
          "type": "platform",
          "version": "1.0.1"
        },
       "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
      },
      "imports": "dnxcore50"
    }
  }
}

Restore packages

dotnet restore

Now we need to define the request handling login. Lets add Startup.cs for this.

using System;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;

namespace hwapp
{
    public class Startup
    {
        public void Configure(IApplicationBuilder app)
        {
            app.Run(context =>
            {
                return context.Response.WriteAsync("Hello from ASP.NET Core!");
            });
        }
    }
}

Now, we need to setup and start the web host. Edit Program.cs as below

using System;
using Microsoft.AspNetCore.Hosting;

namespace hwapp
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var host = new WebHostBuilder()
                .UseUrls("http://0.0.0.0:5000")
                .UseKestrel()
                .UseStartup<Startup>()
                .Build();
            host.Run();
        }
    }
}

Lets run the app

dotnet run

Browser to http://yourserverip:5000/ to see the web page.

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