problem with unstable channel and client-disconnect

sles

Hello!

I run openvpn server over udp and some clients have unstable links, just because they use mobile phone connections (btw, over udp it works better then over tcp).
And I need to run script on client connect and disconnect:
client-connect /etc/openvpn/client-42/connect.sh
client-disconnect /etc/openvpn/client-42/disconnect.sh

problem is that sometimes I see connectivity problem on server side like this
Mar 12 13:24:47 mandela openvpn[24706]: read UDPv4 [CMSG=8|ECONNREFUSED]: Connection refused (code=111)

but server doesn't drop connection, but client drops and connects again:
Mar 12 13:24:51 mandela openvpn[24706]: MULTI: new connection by client 'yakbodinskoe' will cause previous active sessions by this client to be dropped.

result is following:
looks like (I don't see it in logs, but I can add logging ability to script to be shure) server first connect client with new session and run client-connect script, but then server drops previously existed connection and run client-disconnect, so result is as client-connect script was not executed :-)

I run old 2.1_rc7 (ubunti 8.04).

Is this problem solved in newer versions or what can I do to solve it?

Thank you!

sles

btw, I looked into 2.2 sources and see no difference:
1. openvpn allows clients to connect and removes previous sessions
2. on this previous sessions removal openvpn calls client-disconnect script.

I think good idea is to have configuration parameter to call disconnect script or not in such situations.
What do you think?

Thank you!

sles

hmm, after looking into sources more deeply I found that openpvpn removes old sessions before creating new one.
although I can't understand how this pluging call works...
so I added logging to my scripts, hope I'll find what is really happening.
:-)

Bebop

sles wrotehmm, after looking into sources more deeply I found that openpvpn removes old sessions before creating new one.
although I can't understand how this pluging call works...
so I added logging to my scripts, hope I'll find what is really happening.
:-)

Excellent. Do share your findings when complete.