From fdfdc5df21d3df985b751bc61929e2305882dd48 Mon Sep 17 00:00:00 2001
From: happysalada <raphael@megzari.com>
Date: Sun, 16 Oct 2022 14:54:57 -0400
Subject: [PATCH] caddy: module: rmem_max default

---
 nixos/modules/services/web-servers/caddy/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/nixos/modules/services/web-servers/caddy/default.nix b/nixos/modules/services/web-servers/caddy/default.nix
index e1456091717d..50213ec252ff 100644
--- a/nixos/modules/services/web-servers/caddy/default.nix
+++ b/nixos/modules/services/web-servers/caddy/default.nix
@@ -290,6 +290,9 @@ in
       }
     '';
 
+    # https://github.com/lucas-clemente/quic-go/wiki/UDP-Receive-Buffer-Size
+    boot.kernel.sysctl."net.core.rmem_max" = mkDefault 2500000;
+
     systemd.packages = [ cfg.package ];
     systemd.services.caddy = {
       wants = map (hostOpts: "acme-finished-${hostOpts.useACMEHost}.target") acmeVHosts;