Added pool_interval parameter to Server.serve_forever

Author: michalpokusa

adafruit_httpserver/server.py

@@ -15,7 +15,7 @@
     pass
 
 from errno import EAGAIN, ECONNRESET, ETIMEDOUT
-from time import monotonic
+from time import monotonic, sleep
 from traceback import print_exception
 
 from .authentication import Basic, Token, Bearer, require_authentication
@@ -171,14 +171,17 @@ def _verify_can_start(self, host: str, port: int) -> None:
         except OSError as error:
             raise RuntimeError(f"Cannot start server on {host}:{port}") from error
 
-    def serve_forever(self, host: str, port: int = 80) -> None:
+    def serve_forever(
+        self, host: str, port: int = 80, *, poll_interval: float = None
+    ) -> None:
         """
         Wait for HTTP requests at the given host and port. Does not return.
         Ignores any exceptions raised by the handler function and continues to serve.
         Returns only when the server is stopped by calling ``.stop()``.
 
         :param str host: host name or IP address
         :param int port: port
+        :param float poll_interval: interval between polls in seconds
         """
         self.start(host, port)
 
@@ -191,6 +194,9 @@ def serve_forever(self, host: str, port: int = 80) -> None:
             except Exception:  # pylint: disable=broad-except
                 pass  # Ignore exceptions in handler function
 
+            if poll_interval is not None:
+                sleep(poll_interval)
+
     def start(self, host: str, port: int = 80) -> None:
         """
         Start the HTTP server at the given host and port. Requires calling