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GRE-in-UDP for MCData IP Connectivity [message #1855745]

Mon, 31 October 2022 12:39

Eclipse User

Hi Titan experts,

I need to implement in our MCX test suite GRE-in-UDP for MCData IP Connectivity 3GPP TS 24.582 Rel 17 section 13 which in turn is based on RFC 8086 over DTLS. Quite a lot of encapsulation!

The application is for secure point-to-point communication for Future Railway Mobile Communication System (FRMCS).

My question is if someone has an example of DTLS usage with Titan to start with.

Thanks for any hints.

Olaf

Re: GRE-in-UDP for MCData IP Connectivity [message #1855763 is a reply to message #1855745]

Wed, 02 November 2022 03:48

Eclipse User

The IPL4 test port supports DTLS over UDP.

Basically just connect the UDP socket, and call the StartTLS function.

For UDP server side, use the {dtls:={udp:={}}} proto instead of {udp:={}}

Re: GRE-in-UDP for MCData IP Connectivity [message #1855764 is a reply to message #1855763]

Wed, 02 November 2022 03:52

Eclipse User

Wow, thanks, Gábor!
I will investigate.
Olaf

Re: GRE-in-UDP for MCData IP Connectivity [message #1855810 is a reply to message #1855764]

Fri, 04 November 2022 04:40

Eclipse User

Hi Gábor,

I experimented with the IPL4 test port.
The code below attached for running client/server TLS between two machines works 50% of the executions but not 100%.

Changing the proto form {ssl:={}} to dtls:={udp:={}}} it should work for DTLS.
But it does not work :-(

Regards,
Olaf

Attachment: TLSTest.ttcn
(Size: 4.98KB, Downloaded 97 times)

Re: GRE-in-UDP for MCData IP Connectivity [message #1855823 is a reply to message #1855810]

Sat, 05 November 2022 13:48

Eclipse User

Now DTLS transfer works 100% of the executions :-)

Thanks, Gábor for the hint to the excelent IPL4 framework

The cfg at the Client side needed:

*.dtlsPort.ssl_reconnect_attempts := "100" // ??

And the cfg at the Server side:

*.dtlsPort.pureNonBlocking := "yes" // why ??

Regards,
Olaf

Attachment: DTLSTest.ttcn
(Size: 4.82KB, Downloaded 87 times)

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