the provided uri scheme https is invalid expected http

3 min read 01-10-2024

When dealing with web applications, you may encounter the error message: "The provided URI scheme HTTPS is invalid. Expected HTTP." This typically occurs when a web service expects an HTTP connection but receives a request using HTTPS. In this article, we will break down this error, its causes, and how to troubleshoot and resolve it.

What is URI and URI Scheme?

Before we delve into the error, it’s essential to understand what a URI (Uniform Resource Identifier) is. A URI is a string of characters used to identify a resource on the internet. It can specify the location of a resource or a mechanism for its retrieval.

A URI scheme indicates the protocol used to access the resource. Common schemes include:

http:// - Hypertext Transfer Protocol
https:// - Hypertext Transfer Protocol Secure
ftp:// - File Transfer Protocol

Causes of the Error

1. Misconfiguration in Application Settings

Many applications allow you to specify the expected URI scheme in their configuration files. If your application is set to only accept HTTP and you try to access it via HTTPS, this error will appear.

2. Inconsistent Protocol Usage

If you're working in an environment where certain components (like APIs, databases, or microservices) are only accessible through HTTP, an attempt to connect using HTTPS will cause this error.

3. Proxy or Middleware Issues

Sometimes, proxies or middleware that handle requests might interfere with how schemes are recognized. They may have specific settings or routes defined to support only HTTP.

Resolving the Error

Here are steps to troubleshoot and resolve the error:

Step 1: Check Configuration Files

Review your application settings: Look for parameters that define the expected URI scheme. Update them to accept HTTPS if required.

Example Configuration (YAML):

server:
  port: 8080
  protocol: http  # Change to https if necessary

Step 2: Update Your Request

Using the correct scheme: Ensure that your requests or API calls use the correct URI scheme according to the application settings. For example:
```
GET http://example.com/api/data   # If your app only accepts HTTP
```

Step 3: Verify Backend Services

Check the services your application communicates with: If they are designed to handle HTTP only, you need to adjust your application accordingly or update the service to support HTTPS.

Step 4: Debug Proxy/Middleware

Check the settings for any proxies: Ensure they are configured to handle the URI schemes correctly.

Step 5: Consult Documentation

Refer to API or service documentation: Sometimes, external services specify the required protocols to access their endpoints.

Practical Example

Imagine you are developing a web application that connects to a third-party API for retrieving user data.

If the documentation states that it only supports HTTP, attempting to connect via HTTPS will lead to the URI scheme error.

In this case, you would change your API call:

fetch('http://thirdpartyapi.com/users')
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));

Conclusion

Encountering the error message, "The provided URI scheme HTTPS is invalid. Expected HTTP," can be frustrating, but understanding the underlying causes and resolutions can simplify troubleshooting. Always ensure to align your application’s settings with the expected URI scheme of any services or APIs you are interacting with.

By following the steps outlined above, you should be able to resolve the issue effectively.

Additional Resources

If you encounter further issues or have any questions, feel free to leave a comment below!

Attribution: This article synthesizes various sources from GitHub discussions and documentation. Acknowledgments to the original authors for their insights into the errors surrounding URI schemes.