WebApplicationBuilder.WebHost.UseUrls() does not do anything in ASP.NET Core 6 Preview 7

[johnkors]

Describe the bug

WebApplicationBuilder.WebHost.UseUrls() won't let me override the default port.

To Reproduce

Setup a standard "Minimal APIs" Program.cs configuration, and try to set the host urls using the WebApplicationBuilder.WebHost.UseUrls(..) API.

var builder = WebApplication.CreateBuilder(args);
builder.WebHost.UseUrls("http://*:8080");
var app = builder.Build();
app.Run();

Output:

{"EventId":14,"LogLevel":"Information","Category":"Microsoft.Hosting.Lifetime","Message":"Now listening on: http://[::]:80","State":{"Message":"Now listening on: http://[::]:80","address":"http://[::]:80","{OriginalFormat}":"Now listening on: {address}"}}

As a workaround, I found that the app.Run(urls) method do work however:

- builder.WebHost.UseUrls("http://*:8080");
+ app.Run("http://*:8080");

Repro repo: davidfowl/TodoApp#4

Further technical details

TodoApi git:(main) docker run mcr.microsoft.com/dotnet/sdk:6.0 dotnet --info            
.NET SDK (reflecting any global.json):
 Version:   6.0.100-preview.7.21379.14
 Commit:    22d70b47bc

Runtime Environment:
 OS Name:     debian
 OS Version:  11
 OS Platform: Linux
 RID:         linux-x64
 Base Path:   /usr/share/dotnet/sdk/6.0.100-preview.7.21379.14/

Host (useful for support):
  Version: 6.0.0-preview.7.21377.19
  Commit:  91ba01788d

.NET SDKs installed:
  6.0.100-preview.7.21379.14 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.0-preview.7.21378.6 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.0-preview.7.21377.19 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

[johnkors]

Seems to be fixed in RC1. Tested the nightlies from mcr.microsoft.com/dotnet/nightly/sdk:6.0, and that did not have the above issue.

.NET SDK (reflecting any global.json):
 Version:   6.0.100-rc.1.21453.13
 Commit:    509eff6ece

Runtime Environment:
 OS Name:     debian
 OS Version:  11
 OS Platform: Linux
 RID:         debian.11-x64
 Base Path:   /usr/share/dotnet/sdk/6.0.100-rc.1.21453.13/

Host (useful for support):
  Version: 6.0.0-rc.1.21451.13
  Commit:  d7619cd4b1

.NET SDKs installed:
  6.0.100-rc.1.21453.13 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.0-rc.1.21452.15 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.0-rc.1.21451.13 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

[davidfowl]

Great! We should be able to close this one then