diff mbox series

[Openvpn-devel,v1] management: stop bytecount on client disconnection

Message ID 20250902163514.22339-1-gert@greenie.muc.de
State New
Headers show
Series [Openvpn-devel,v1] management: stop bytecount on client disconnection | expand

Commit Message

Gert Doering Sept. 2, 2025, 4:35 p.m. UTC 
From: Ralf Lici <ralf@mandelbit.com>

When a management interface client requests periodic bytecount
notifications, openvpn continues to emit them even after the client has
disconnected. Additionally, upon reconnecting, the client starts
receiving these notifications without having issued a new bytecount
command.

Stop the periodic bytecount operation when the management interface
client disconnects, preventing unnecessary stats polling when using DCO
and ensuring that clients only receive notifications they have
explicitly requested.

Change-Id: I1474d232278433d097baf85352dfc9a79853bad1
Signed-off-by: Ralf Lici <ralf@mandelbit.com>
Acked-by: Gert Doering <gert@greenie.muc.de>
---

This change was reviewed on Gerrit and approved by at least one
developer. I request to merge it to master.

Gerrit URL: https://gerrit.openvpn.net/c/openvpn/+/1167
This mail reflects revision 1 of this Change.

Acked-by according to Gerrit (reflected above):
Gert Doering <gert@greenie.muc.de>

Comments

Gert Doering Sept. 2, 2025, 5:07 p.m. UTC | #1 
"Does what it says on the lid".

Tested on Linux+DCO client - without the patch, with "bytecount 1",
after management client disconnect the log would happily show 
more "dco_get_peer()" calls, one per second.  With the patch, these
properly stop (as with "bytecount 0", so that one also still works).

Your patch has been applied to the master branch.

commit fccdb21733d2826bcdc080fdfa93b0283b5231b8
Author: Ralf Lici
Date:   Tue Sep 2 18:35:09 2025 +0200

     management: stop bytecount on client disconnection

     Signed-off-by: Ralf Lici <ralf@mandelbit.com>
     Acked-by: Gert Doering <gert@greenie.muc.de>
     Message-Id: <20250902163514.22339-1-gert@greenie.muc.de>
     URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg32765.html
     Signed-off-by: Gert Doering <gert@greenie.muc.de>


--
kind regards,

Gert Doering
diff mbox series

Patch

diff --git a/src/openvpn/manage.c b/src/openvpn/manage.c
index 422aa0b..5b2a7de 100644
--- a/src/openvpn/manage.c
+++ b/src/openvpn/manage.c
@@ -501,6 +501,13 @@ 
 }
 
 static void
+man_bytecount_stop(struct management *man)
+{
+    man->connection.bytecount_update_seconds = 0;
+    event_timeout_clear(&man->connection.bytecount_update_interval);
+}
+
+static void
 man_bytecount(struct management *man, const int update_seconds)
 {
     if (update_seconds > 0)
@@ -511,8 +518,7 @@ 
     }
     else
     {
-        man->connection.bytecount_update_seconds = 0;
-        event_timeout_clear(&man->connection.bytecount_update_interval);
+        man_bytecount_stop(man);
     }
 
     /* The newly received bytecount interval may be sooner than the existing
@@ -1992,6 +1998,7 @@ 
 {
     if (socket_defined(man->connection.sd_cli))
     {
+        man_bytecount_stop(man);
 #ifdef _WIN32
         man_stop_ne32(man);
 #endif