nixos/caddy: also increase socket send buffer size as recommended by upstream

networkException · networkException · commit 968905ab76ab · 2023-12-15T04:43:57.000+01:00
this patch adjusts the `boot.kernel.sysctl."net.core.wmem_max"` to match the value suggested in the quic-go wiki, just as `"net.core.wmem_max"`. see fdfdc5d see quic-go/quic-go#3923
diff --git a/nixos/modules/services/web-servers/caddy/default.nix b/nixos/modules/services/web-servers/caddy/default.nix
@@ -342,8 +342,9 @@ in
       }
     '';
 
-    # https://github.com/lucas-clemente/quic-go/wiki/UDP-Receive-Buffer-Size
+    # https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizes
     boot.kernel.sysctl."net.core.rmem_max" = mkDefault 2500000;
+    boot.kernel.sysctl."net.core.wmem_max" = mkDefault 2500000;
 
     systemd.packages = [ cfg.package ];
     systemd.services.caddy = {

Original file line number	Diff line number	Diff line change
`@@ -342,8 +342,9 @@ in`
`342`	`342`	`}`
`343`	`343`	`'';`
`344`	`344`
`345`		`- # https://github.com/lucas-clemente/quic-go/wiki/UDP-Receive-Buffer-Size`
	`345`	`+ # https://github.com/quic-go/quic-go/wiki/UDP-Buffer-Sizes`
`346`	`346`	`boot.kernel.sysctl."net.core.rmem_max" = mkDefault 2500000;`
	`347`	`+ boot.kernel.sysctl."net.core.wmem_max" = mkDefault 2500000;`
`347`	`348`
`348`	`349`	`systemd.packages = [ cfg.package ];`
`349`	`350`	`systemd.services.caddy = {`