How can I allow apps to claim "https" scheme URIs? (i.e How can I open a desktop application from https URL?)

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To allow desktop applications to handle https scheme URIs and open from a web browser, you need to register a custom URI scheme for your application. Here's an overview of the steps involved:

  1. Choose a custom URI scheme: Decide on a unique custom URI scheme for your application. For example, you could use something like myapp.

  2. Register the custom URI scheme: Register the custom URI scheme in the Windows registry. Create a new registry key under HKEY_CLASSES_ROOT with the name of your custom scheme (e.g., myapp). Set the default value of the key to a friendly name for your application.

  3. Configure the command to launch the application: Create a new subkey under your custom scheme key (e.g., myapp\shell\open\command). Set the default value of this subkey to the command that should be executed when the URI is invoked. For example, "C:\Path\to\your\application.exe" "%1".

  4. Handle the URI in your application: In your desktop application, you need to implement the handling of the custom URI scheme. When your application is launched with the custom scheme URI, it should extract the relevant data from the URI and perform the necessary actions.

Once you have completed these steps, your desktop application will be associated with the custom URI scheme, and when a user clicks on a link with the https scheme and your custom URI, your application will be launched to handle the URI.

It's important to note that registering a custom URI scheme requires administrative privileges. Also, be mindful of potential security implications when handling custom URI schemes and ensure that your application validates and sanitizes the input received from the URI.

The exact steps for registering a custom URI scheme may vary depending on the target platform and development environment you are using. Consult the documentation or guidelines specific to your platform and programming language for detailed instructions on how to register a custom URI scheme.