openvpn3-linux | OpenVPN 3 Linux client | VPN library
kandi X-RAY | openvpn3-linux Summary
kandi X-RAY | openvpn3-linux Summary
This is the next generation OpenVPN client for Linux. This project is very different from the more classic OpenVPN 2.x versions. First, this is currently only a pure client-only implementation. The biggest change from the classic OpenVPN 2.x generation is that it does not need to be started by a root or otherwise privileged account any more. By default, all users on the system will have access to start and manage their own VPN tunnels. It will also support configuring DNS out-of-the-box. The same OpenVPN 3 Core library which is used in the OpenVPN Connect clients is also used in this OpenVPN 3 client. This implementation does not support all options OpenVPN 2.x does, but if you have a functional configuration with OpenVPN Connect (typically on Android or iOS devices) it will work with this client. In general OpenVPN 3 supports routed TUN configurations; TAP and bridged setups are unsupported and will not work. On a more technical level, this client builds on D-Bus and does also ship with a Python 3 module which can also be used to implement your own OpenVPN client front-end. Any language which supports D-Bus bindings can also be used.
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QUESTION
I'm writing an Applet for Linux Mint/Cinnamon to manage OpenVPN v3 connections.
In order to avoid synchronous calls that can cause the DE to stutter or freeze, I'm writing a simple DBus client using the Gio
and GLib
libraries provided by GJS. This allows an asynchronous, partly event-driven approach and should avoid any nasty side effects. It's my first time using any of these technologies but the OpenVPN DBus API is pretty well documented and the API docs for Gio and GLib are also good.
The problem I have is with signal subscriptions, specifically the StatusChange
signal published by the net.openvpn.v3.sessions
service. A bunch of these signals are published whenever a connection is established, paused, resumed or closed. Most of the signals are picked up by my subscribed listener, but not all of them. In particular, I don't receive the session closed
signal.
Using the dbus-monitor
commandline tool, you can see all the StatusChange
signals published when a connection is established (7 signals) and then closed (2 signals):
ANSWER
Answered 2021-Jul-09 at 19:29After a bit more digging it appears this behaviour is by design - Signals that carry a destination value are treated as unicast messages. Subscribers other than the intended recipient will only receive such messages if they are configured to eavesdrop
. Presumably this is the case for dbus-monitor
.
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