OCS agent can't contact server through proxy - 501 Protocol scheme 'connect' is not supported

[mcondamin]

General informations

Operating system : Debian 12 Perl version : 5.36

OCS Inventory informations

Unix agent version : 2.10.0-3

Problem's description

Hi, I'm having a problem connecting and sending data from clients to the OCS server when the agent is located behind an http proxy. If the agent contacts the server directly without going through the proxy, the connection works fine.

Here is the agent configuration :

server=https://inventory.xxxx.com/ocsinventory
ca=/etc/ocsinventory/cacert.pem
ssl=1
proxy=192.168.174.130:8888

Connection from client using openssl command works fine openssl s_client -proxy 192.168.174.130:8888 -showcerts -connect inventory.xxxxx.com:443

FYI, liblwp-protocol-https-perl package is already installed

Thank your for you help !

Inventory log file ( optional )

[debug] Ocsinventory unified agent for UNIX, Linux and MacOSX 2.10.0
[debug] Log system initialised (Stderr)
[debug] --scan-homedirs missing. Don't scan user directories
[debug] Accountinfo file: /var/lib/ocsinventory-agent/https:__inventory.xxxxx.com_ocsinventory/ocsinv.adm
[debug] OCS Agent initialised
[debug] Turns hooks on for /etc/ocsinventory/modules.conf
[debug] Ocsinventory unified agent for UNIX, Linux and MacOSX 2.10.0
[debug] Log system initialised (Stderr)
[debug] Ocsinventory unified agent for UNIX, Linux and MacOSX 2.10.0
[debug] Log system initialised (Stderr)
[debug] Calling handlers : `start_handler'
[debug] [snmpscan] Calling snmp_start_handler
[debug]  - Net::SNMP loaded
[debug] [download] Calling download_start_handler
[debug]  - LWP loaded
[debug]  - LWP::Protocol::https loaded
[debug] Compress::Zlib is available.
[debug] Calling handlers : `prolog_writer'
[debug] checking XML
[debug] sending XML
[debug] sending: <?xml version="1.0" encoding="UTF-8"?>
<REQUEST>
  <DEVICEID>pg-barman-2024-02-27-13-23-40</DEVICEID>
  <QUERY>PROLOG</QUERY>
</REQUEST>
[error] Cannot establish communication : 501 Protocol scheme 'connect' is not supported