From: Christian Heller <c.heller@plomlompom.de>
Date: Sun, 15 Nov 2020 23:49:37 +0000 (+0100)
Subject: Add basic flood protection to server.
X-Git-Url: https://plomlompom.com/repos/%7B%7Bdb.prefix%7D%7D/%7B%7B%20web_path%20%7D%7D/blog?a=commitdiff_plain;h=baab532ba5125527bdc7061864f7cc7db8d7abc3;p=plomrogue2

Add basic flood protection to server.
---

diff --git a/plomrogue/io.py b/plomrogue/io.py
index 8e0f9bf..68f580b 100644
--- a/plomrogue/io.py
+++ b/plomrogue/io.py
@@ -14,10 +14,21 @@ class GameIO():
         self.servers = []
 
     def loop(self, q):
-        """Handle commands coming through queue q, run game, send results back."""
+        """Handle commands coming through queue q, run game, send results back.
+
+        As basic flood protection, Only accepts one command per connection per
+        1/100 of a second.
+
+        """
+        import time
+        potential_flooders = {}
         while True:
             try:
                 command, connection_id = q.get(timeout=0.001)
+                if connection_id in potential_flooders:
+                    if int(time.time() * 100) == potential_flooders[connection_id]:
+                        continue
+                potential_flooders[connection_id] = int(time.time() * 100)
                 self.handle_input(connection_id, command)
             except queue.Empty:
                 self.game.run_tick()