Codespaces for ASP.NET Web API not working

[csgwebsite]

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I have an ASP.NET Web API 6.0 product which is run good on local computer or real-life servers (I’m using Railway as my cloud server currently). However, there are some issues when I tried to deploy it on the github codespaces (If you wondered why I’m trying codespace: Because my computer went down so I have to find an alternative way to continue coding):

• The deployment is success, the appsettings.json works fine, but the issue is after I tried to run the forward address, it returns blank screen. The expected result should be error or “request not found”, something like that. I’ve tried adding the settings for .NET codespaces to my project but it didn’t fix. Below is the result after I tried the dotnet run command (which returns run successfully along with the ports) and open it on my device (which returns a blank screen).

I’m stuck for a day now, please help me ;-;

[rajtilak-2020]

Hi there,

It seems like you're encountering an issue with deploying your ASP.NET Web API 6.0 on GitHub Codespaces, where the app runs successfully but returns a blank screen when accessed. Let’s go through a few things that might help resolve this issue:

1. Check for Logs and Error Handling:

Since you’re expecting an error or a "request not found" message, first check if any errors are being logged by your application. You can enable logging in your Startup.cs or Program.cs by adding:

builder.Logging.AddConsole();
This will log more detailed information to the console, which could help in identifying why the application is not behaving as expected.

2. Ports and Binding Configuration:
   Make sure the application is binding to the correct IP address and port in Codespaces. By default, ASP.NET Core might bind to localhost or 127.0.0.1, which might not be accessible in the Codespaces environment.

In appsettings.json, or in your Program.cs, ensure you're setting the correct URLs like this:

csharp
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builder.WebHost.UseUrls("http://0.0.0.0:5000"); // Make sure to bind to all interfaces
You can also specify ASPNETCORE_URLS in the environment variable:

bash
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export ASPNETCORE_URLS=http://0.0.0.0:5000
3. Check for Firewall or Proxy Issues:
Codespaces might be behind a proxy or have firewall settings that block certain incoming requests. Ensure that your app can accept requests from external IPs by verifying the firewall settings and making sure you’re using the correct URL to access your app.

4. Cross-Origin Resource Sharing (CORS):
   If your app is trying to interact with other services (e.g., API calls), ensure that CORS is properly configured to allow requests from other domains.

5. Check for Missing Dependencies:
   Verify if there are any required dependencies or services not being properly initialized in the Codespaces environment. Sometimes, certain services or configurations might be missing in a cloud environment.

6. Check Environment Variables:
   Ensure that any environment-specific configurations, such as API keys or connection strings, are correctly set in your Codespaces environment. Missing or incorrect environment variables might prevent certain services from starting properly.

Conclusion:
If none of the above work, I’d recommend checking the Codespaces logs for more detailed errors and trying to run the app in a different environment (like your local machine or another server) to verify the issue is specific to Codespaces.

I hope this helps, and let me know if you need further assistance!

[csgwebsite]

Hi there,

First of all, I appreciate your assistance. I’ve tried some of your changes and it still not working on my side.

FYI:

• I’ve tried adding the builder.Logging.AddConsole() => Returns nothing different compare to the version before change.
• I’ve tried adding the builder.Webhost.UseURLs() => Returns error “Not Found” on the UI.

I also tried to create a new project (with no custom changes) that’s running good on local server and real-time server and push it up to the codespace, however it’s still the same error (blank screen even though deployed successfully). Is there any new configs that I need to do when I push a new project to the codespace so that it can run fine? (I think if I can run it on the new project, I can fix it on the project that I mention above.)

Thanks.

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