Setting Port in .Net 5 Web Api and Visual Studio 2019

Question

Setting Port in .Net 5 Web Api and Visual Studio 2019

Kmcnet 1,066

Hello everyone and thanks for the help in advance. I am new to .Net 5 Web Api and am trying to deploy some very basic services to get started. The production deployment needs to run on a different port, for example 43443. I've read documentation this requires changes to the project configuration in older versions of .Net and VS, but can't find what needs to be done for VS 2019 and .Net 5. Currently receiving HTTP Error 400. The request hostname is invalid. error when running on production machine. Any help would be appreciated.

AgaveJoe 30,126 Reputation points

2021-07-21T20:31:27.557+00:00

The port setting are located in the properties/launchSettings.json file in solution explorer. launchSettings.json only controls the port on the development machine. This information is covered in the fundamental docs.

In a production environment, you need to config your host to use port 43443. If you are hosting on IIS then change your site bindings.

A 400 error indicates a problem with the HTTP request and also indicates the request made it to the expected port. What URL are you using and how is IIS configured???
Kmcnet 1,066 Reputation points

2021-07-22T15:26:19.877+00:00

Thanks for the response. Your answer is what I additionally thought, so I am not sure what the problem is. Is did bind the site to the correct port. I left the out of the box swagger and weatherforecast api intact, just to check connectivity. The Url I am navigating to is http://192.168.0.3:43443/swagger/index.html which throws the HTTP Error 400. The request hostname is invalid error.
AgaveJoe 30,126 Reputation points

2021-07-22T15:45:26.913+00:00

The IP address you shared is local network IP. This is your production server??? Are you accessing the production server from a system on the same network???

My best guess is you configured a Host Name (see the screenshot) but not the IP address. Try entering a * for the Host Name. Unfortunately, it's not clear what you're doing or why. Usually a production server has a production domain name.

You might want to visit IIS support as this seems issue seems to be related to IIS configuration not ASP.NET Core.
Kmcnet 1,066 Reputation points

2021-07-22T19:32:22.827+00:00

Thanks for the feedback. I did not have a host name configured, but what seems to fix the problem is to configure a host name with a SSL certificate. After doing this, I can browse to the WeatherForecast api that returns the expected json. I assume I must have required SSL somewhere in the project setup. However, I do note that the https://mysite.com:43443/swagger/index.html is now unreachable and I'm not sure why.
Sam Wu-MSFT 7,561 Reputation points Microsoft External Staff

2021-07-23T08:23:56.69+00:00

@Kmcnet Please check whether the url you requested exists, and whether index.html exists.you can also use failed request tracking to view detailed error information.

Your answer

AgaveJoe 30,126 Reputation points

2021-07-21T20:31:27.557+00:00

The port setting are located in the properties/launchSettings.json file in solution explorer. launchSettings.json only controls the port on the development machine. This information is covered in the fundamental docs.

In a production environment, you need to config your host to use port 43443. If you are hosting on IIS then change your site bindings.

A 400 error indicates a problem with the HTTP request and also indicates the request made it to the expected port. What URL are you using and how is IIS configured???
Kmcnet 1,066 Reputation points

2021-07-22T15:26:19.877+00:00

Thanks for the response. Your answer is what I additionally thought, so I am not sure what the problem is. Is did bind the site to the correct port. I left the out of the box swagger and weatherforecast api intact, just to check connectivity. The Url I am navigating to is http://192.168.0.3:43443/swagger/index.html which throws the HTTP Error 400. The request hostname is invalid error.
AgaveJoe 30,126 Reputation points

2021-07-22T15:45:26.913+00:00

The IP address you shared is local network IP. This is your production server??? Are you accessing the production server from a system on the same network???

My best guess is you configured a Host Name (see the screenshot) but not the IP address. Try entering a * for the Host Name. Unfortunately, it's not clear what you're doing or why. Usually a production server has a production domain name.

You might want to visit IIS support as this seems issue seems to be related to IIS configuration not ASP.NET Core.
Kmcnet 1,066 Reputation points

2021-07-22T19:32:22.827+00:00

Thanks for the feedback. I did not have a host name configured, but what seems to fix the problem is to configure a host name with a SSL certificate. After doing this, I can browse to the WeatherForecast api that returns the expected json. I assume I must have required SSL somewhere in the project setup. However, I do note that the https://mysite.com:43443/swagger/index.html is now unreachable and I'm not sure why.
Sam Wu-MSFT 7,561 Reputation points Microsoft External Staff

2021-07-23T08:23:56.69+00:00

@Kmcnet Please check whether the url you requested exists, and whether index.html exists.you can also use failed request tracking to view detailed error information.

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Setting Port in .Net 5 Web Api and Visual Studio 2019

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