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c#.netasp.net-corevisual-studio-codecodespaces

ASP.NET Core app in Visual Studio Codespaces debugging issue

I created an ASP.NET Core app in Visual Studio Codespaces. I added C# for Visual Studio Code in the project and when I'm running the application I'm not redirected to the local web application. I have instead an HTTP ERROR 504. enter image description here

The page is blocking the redirection. enter image description here

And then HTTP ERROR 504. enter image description here

My launch settings is configured on port 5001 and 5000 :

{
  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:55448",
      "sslPort": 44383
    }
  },
  "profiles": {
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "Test": {
      "commandName": "Project",
      "launchBrowser": true,
      "applicationUrl": "https://localhost:5001;http://localhost:5000",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    }
  }
}

And the forwarded ports in Visual Studio Code in Codespace are by default :

enter image description here

Any clue why I can't access the web app via the address http://localhost:5000?

Edit :

.vscode/launch.json

{
   // Use IntelliSense to find out which attributes exist for C# debugging
   // Use hover for the description of the existing attributes
   // For further information visit https://github.com/OmniSharp/omnisharp-vscode/blob/master/debugger-launchjson.md
   "version": "0.2.0",
   "configurations": [
        {
            "name": ".NET Core Launch (web)",
            "type": "coreclr",
            "request": "launch",
            "preLaunchTask": "build",
            // If you have changed target frameworks, make sure to update the program path.
            "program": "${workspaceFolder}/Test/bin/Debug/netcoreapp3.1/Test.dll",
            "args": [],
            "cwd": "${workspaceFolder}/Test",
            "stopAtEntry": false,
            // Enable launching a web browser when ASP.NET Core starts. For more information: https://aka.ms/VSCode-CS-LaunchJson-WebBrowser
            "serverReadyAction": {
                "action": "openExternally",
                "pattern": "\\bNow listening on:\\s+(https?://\\S+)"
            },
            "env": {
                "ASPNETCORE_ENVIRONMENT": "Development"
            },
            "sourceFileMap": {
                "/Views": "${workspaceFolder}/Views"
            }
        },
        {
            "name": ".NET Core Attach",
            "type": "coreclr",
            "request": "attach",
            "processId": "${command:pickProcess}"
        }
    ]
}

.vscode/task.json

{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "build",
            "command": "dotnet",
            "type": "process",
            "args": [
                "build",
                "${workspaceFolder}/Test/Test.csproj",
                "/property:GenerateFullPaths=true",
                "/consoleloggerparameters:NoSummary"
            ],
            "problemMatcher": "$msCompile"
        },
        {
            "label": "publish",
            "command": "dotnet",
            "type": "process",
            "args": [
                "publish",
                "${workspaceFolder}/Test/Test.csproj",
                "/property:GenerateFullPaths=true",
                "/consoleloggerparameters:NoSummary"
            ],
            "problemMatcher": "$msCompile"
        },
        {
            "label": "watch",
            "command": "dotnet",
            "type": "process",
            "args": [
                "watch",
                "run",
                "${workspaceFolder}/Test/Test.csproj",
                "/property:GenerateFullPaths=true",
                "/consoleloggerparameters:NoSummary"
            ],
            "problemMatcher": "$msCompile"
        }
    ]
}

Moreover if I open the Codespace in VS Code and run it on local VS Code, it's working. enter image description here enter image description here enter image description here enter image description here

Solution

  • When using VS Code locally, launchSettings.json is not used. When installing C# extension in VS Code, I get a .vscode/launch.json and .vscode/tasks.json when selecting .NET Core launch (my app is called "WebApplication").

    .vscode/launch.json (updated with working settings)

    {
"version": "0.2.0",
"configurations": [
    {
        "name": ".NET Core Launch (web)",
        "type": "coreclr",
        "request": "launch",
        "preLaunchTask": "build",
        "program": "${workspaceFolder}/bin/Debug/netcoreapp3.1/WebApplication.dll",
        "args": [],
        "cwd": "${workspaceFolder}",
        "stopAtEntry": false,
        "serverReadyAction": {
            "action": "openExternally",
            "pattern": "\\bNow listening on:\\s+(http?://\\S+)"
        },
        "env": {
            "ASPNETCORE_ENVIRONMENT": "Development"
        },
        "sourceFileMap": {
            "/Views": "${workspaceFolder}/Views"
        }
    },
    {
        "name": ".NET Core Attach",
        "type": "coreclr",
        "request": "attach",
        "processId": "${command:pickProcess}"
    }
]
}

    .vscode/tasks.json

    {
"version": "2.0.0",
"tasks": [
    {
        "label": "build",
        "command": "dotnet",
        "type": "process",
        "args": [
            "build",
            "${workspaceFolder}/WebApplication.csproj",
            "/property:GenerateFullPaths=true",
            "/consoleloggerparameters:NoSummary"
        ],
        "problemMatcher": "$msCompile"
    },
    {
        "label": "publish",
        "command": "dotnet",
        "type": "process",
        "args": [
            "publish",
            "${workspaceFolder}/WebApplication.csproj",
            "/property:GenerateFullPaths=true",
            "/consoleloggerparameters:NoSummary"
        ],
        "problemMatcher": "$msCompile"
    },
    {
        "label": "watch",
        "command": "dotnet",
        "type": "process",
        "args": [
            "watch",
            "run",
            "${workspaceFolder}/WebApplication.csproj",
            "/property:GenerateFullPaths=true",
            "/consoleloggerparameters:NoSummary"
        ],
        "problemMatcher": "$msCompile"
    }
]
}

    When selecting .NET Core launch to run the app, Chrome opens the app with http://localhost:5000 and then gets redirected to https://localhost:5001 because of

    app.UseHttpsRedirection();

    in my config.

    Maybe try to run the app from VS Code locally to see if that works? I don't have an account yet to test this in Codespaces, sorry for that.