Update Whitelist after the connection is closed

knockr.go

@@ -68,6 +68,13 @@ func gateway_handler(c net.Conn) {
 		fmt.Println("[OK ] Whitelisted host ", host, " connected")
 		update_whitelist_time(host)
 		proxy(c)
+		update_whitelist_time(host)
+		// yes, we're updating this before and after.
+		// why? Consider long TCP connections, e.g. in games
+		// Then the specified Timeout may be reached before the connection is even closed
+		// This won't affect this connection (it'll stay open even if the timeout is reached)
+		// but another connection won't be possible, even if it's right after the closing of
+		// the first connection. ¯\_(ツ)_/¯
 	} else {
 		fmt.Println("[BLK] Blocking host ", host)
 	}