1. import requests
  3. def attach_header_metadata(url, headers=None, metadata=None, follow_redirects=True):
  4. """
  5. Attaches metadata to headers as a workaround.
  7. Args:
  8. url (str): The URL to request.
  9. headers (dict, optional): Existing headers to modify. Defaults to None.
  10. metadata (dict, optional): Metadata to attach to headers. Defaults to None.
  11. follow_redirects (bool, optional): Whether to follow redirects. Defaults to True.
  13. Returns:
  14. requests.Response: The response object.
  15. """
  17. if headers is None:
  18. headers = {}
  20. if metadata is not None:
  21. # Add metadata to headers. Using a custom header name.
  22. headers['X-Custom-Metadata'] = str(metadata) # Convert metadata to string
  24. try:
  25. response = requests.get(url, headers=headers, follow_redirects=follow_redirects)
  26. response.raise_for_status() # Raise HTTPError for bad responses (4xx or 5xx)
  27. return response
  28. except requests.exceptions.RequestException as e:
  29. print(f"An error occurred: {e}")
  30. return None
  33. if __name__ == '__main__':
  34. # Example Usage
  35. url = "https://httpbin.org/headers" # A useful URL for testing headers
  37. # Example 1: No custom metadata
  38. response = attach_header_metadata(url)
  39. if response:
  40. print("Response (no metadata):")
  41. print(response.json())
  43. # Example 2: With custom metadata
  44. metadata = {"key1": "value1", "key2": 123}
  45. response = attach_header_metadata(url, metadata=metadata)
  46. if response:
  47. print("\nResponse (with metadata):")
  48. print(response.json())
  50. # Example 3: Modifying existing headers.
  51. headers = {"User-Agent": "MyCustomAgent"}
  52. response = attach_header_metadata(url, headers=headers, metadata=metadata)
  53. if response:
  54. print("\nResponse (with modified headers):")
  55. print(response.json())

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