[luodaint]

The problem is that you create an HTTP client for each incoming request. In other words, you recreate SSL context and cause reference cycles with each request. From the memory point of view, the program seems to have a memory leak. However, the solution to the issue lies at the application level: just create your client once and reuse it for each subsequent request.

One of heuristics to find memory leaks can be stated as follows: if you instantiate any HTTP or connection objects inside the request handler, it's likely that you've made a mistake.