[SR-Users] Setting up TLS between proxy and authentication server

[Couprie Geoffroy]

Hello,

I am testing TLS communication with Kamailio 3.0.2, and I encounter a strange problem. My setup is like this:

Client      <-UDP->  Proxy server <- TLS with client certificate authentication -> Authentication server
192.168.24.1            192.168.24.128                                                                                           192.168.24.129

The two servers are instance of Kamailio 3.0.2

When the client sends a REGISTER, the proxy retransmits the message to the authentication server, which sends back a 401 Unauthorized. But it seems the proxy closes the TLS connexion right after forwarding the REGISTER, and doesn't receive the 401 message. The TLS handshake is OK, and the client certificate is required (I didn't add the verification part yet). The REGISTER message goes through TLS, and is received by the authentication server. Then, the proxy sends a TLS alert (Close-notify), and after that message, the authentication server sends back the 401, and the proxy ignores that message.

Could it be caused by a timeout? Is there a way to keep the TLS connection opened?

Here are the relevant files (I don't like to send mails of more than 100 lines):
authentication server configuration: http://pastebin.com/QBmnNc4e
authentication server log: http://pastebin.com/uYdHDG5G
proxy server configuration: http://pastebin.com/8WPPJBtM
proxy server log: http://pastebin.com/JTwJSKtk

I am just testing TLS, so I have tried to remove most of the irrelevant parts.

Best regards,

Geoffroy

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