Openvpn server suspends routing during client-connect script

[yateya]

I have Openvpn server with multiple client. In the server configurations I use client-connect and client-disconnect script to notify external application on vpn server about connected/disconnected client.

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    client-connect /etc/openvpn/client_status.sh
    client-disconnect /etc/openvpn/client_status.sh

the content of the client_status script is like this:

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    #!/bin/bash
    cd `dirname $0` #switch to directory of client_status.sh
    /usr/local/bin/node client_status --mode=$script_type --ip=$ifconfig_pool_remote_ip --name=$common_name
    exit 0

which executes nodejs script (to serve some JSON apis). The problem started to appear when the script execution time became long (multiple seconds). During this multiple seconds all vpn routing is disabled!

What I did is to solve the porblem is to change script to fork the node process.

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 /usr/local/bin/node client_status --mode=$script_type --ip=$ifconfig_pool_remote_ip --name=$common_name &

(the ampersand at end of line).

Is this a bug in openvpn? I can't find any part in documentation which talk about this.

I am using OpenVPN 2.2.1 on ubuntu 12.04 64bit.

[yateya]

The problem is not the return value of the client-connect script, as you see it has

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exit 0

at the end of the script. The problem is the duration of the script.

[yateya]

Thanks for your reply. I just want to emphasis that forking new process from the script actually solved the problem; Openvpn server now is not blocked during my client-connect script.

It seems that -as you said- openvpn stops everything (routing, accepting new clients, ...) during the exeution of the client-connect script.