After receiving GET
request, return to the user his public ip, not using any third-party service (it can be received from request headers, google how)
Response type, structure, etc at your own discretion
After receiving request (type of requst at your discretion) with image url (like this url), exctact CREATION_DATE
AND IMAGE_SIZE
metadata and return them to the user. Choose on of the image format: PNG
or JPEG
Also function must have caching
for already used links. Type and realization of cache at your own discretion
Response type, structure, etc at your own discretion