[ACCEPTED]-How can I change Kestrel (AspNetCore) listening port by environment variables in netcore3.1-kestrel
There are multiple ways to achieve this 14 as documented here.
- ASPNETCORE_URLS environment variable.
- --urls command-line argument.
- urls host configuration key.
- UseUrls extension method.
To achieve this using an environment variable, simply 13 create an environment variable called ASPNETCORE_URLS and 12 set the value to the URL you'd like to use
Typically 11 this would be http://+:<port> or https://+:<port>
Another method which, at 10 the time of writing this answer, isn't described 9 above is via the hostsettings.json file.
You 8 can configure the URL & Port by creating 7 a hostsettings.json configuration file and 6 adding the urls key, then add hostsettings.json 5 to your IConfigurationBuilder when building your WebHostBuilder.
Here is the 4 code snippet from the link, in case this 3 link ever goes dead.
Create your hostsettings.json 2 file containing the urls key with your value(s)
{
urls: "http://*:5005"
}
Register 1 hostsettings.json in your IConfigurationBuilder
public class Program
{
public static void Main(string[] args)
{
CreateWebHostBuilder(args).Build().Run();
}
public static IWebHostBuilder CreateWebHostBuilder(string[] args)
{
var config = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("appsettings.json", optional: false)
.AddJsonFile("hostsettings.json", optional: true)
.AddCommandLine(args)
.Build();
return WebHost.CreateDefaultBuilder(args)
.UseUrls("http://*:5000")
.UseConfiguration(config)
.UseStartup<Startup>();
}
}
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