From e4388246e396be6323f1bc12c1262edd529b0520 Mon Sep 17 00:00:00 2001
From: Thomas Goirand <zigo@debian.org>
Date: Tue, 16 Jul 2024 04:00:12 +0200
Subject: [PATCH] close-all-files uses too much resources

Since Systemd 256~rc3-3, maxfd could be *really* big,
and therefore, could take too much resources. This patch
attemps to limit this.
---
 websockify/websockifyserver.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/websockify/websockifyserver.py b/websockify/websockifyserver.py
index 74f9f536..eaa03819 100644
--- a/websockify/websockifyserver.py
+++ b/websockify/websockifyserver.py
@@ -521,6 +521,12 @@ def daemonize(keepfd=None, chdir='/'):
         # Close open files
         maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1]
         if maxfd == resource.RLIM_INFINITY: maxfd = 256
+        # Since Systemd 256~rc3-3, maxfd could be
+        # *really* big, and therefore, the below code
+        # could take too much resources. This somehow
+        # attemps to limit this.
+        if maxfd > 4096:
+            maxfd = 4096
         for fd in reversed(range(maxfd)):
             try:
                 if fd not in keepfd: