Asp.Net Core Project Configuration

There are basically several ways to configure runtime of Asp.Net Core application:

• command line arguments
• environment variables
• configuration inside of code

Runtime Command Line Arguments

Configuring ports, which will be listened on runtime of the application:

dotnet run --urls "http://localhost:5000;https://localhost:5001"

Listening urls have to be in specific format for IPv4 - {scheme}://{loopbackAddress}:{port} or {scheme}://{IPAddress}:{port}. To listen for any port on available address - {scheme}://*:{port}. If port is omitted, it will fallback to default 80 for http and 443 for https.

Configuration Environment Variables

We can configure runtime of such things, like server configuration and

Configuration With Code

Host.CreateDefaultBuilder(args).ConfigureWebHostDefaults(webBuilder =>
{
    webBuilder.UseStartup<Startup>();
    // here we can configure listening ports
    webBuilder.UseUrls("http://localhost:5003", "https://localhost:5004");
});

Resources

• 5 ways to set the URLs for an ASP.NET Core app