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GRE-in-UDP for MCData IP Connectivity [message #1855745] Mon, 31 October 2022 16:39 Go to next message
Olaf Bergengruen is currently offline Olaf BergengruenFriend
Messages: 127
Registered: November 2018
Senior Member
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

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Re: GRE-in-UDP for MCData IP Connectivity [message #1855763 is a reply to message #1855745] Wed, 02 November 2022 07:48 Go to previous messageGo to next message
Gábor Szalai is currently offline Gábor SzalaiFriend
Messages: 134
Registered: December 2015
Senior Member
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:={}}

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Re: GRE-in-UDP for MCData IP Connectivity [message #1855764 is a reply to message #1855763] Wed, 02 November 2022 07:52 Go to previous messageGo to next message
Olaf Bergengruen is currently offline Olaf BergengruenFriend
Messages: 127
Registered: November 2018
Senior Member
Wow, thanks, Gábor!
I will investigate.
Olaf

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Re: GRE-in-UDP for MCData IP Connectivity [message #1855810 is a reply to message #1855764] Fri, 04 November 2022 08:40 Go to previous messageGo to next message
Olaf Bergengruen is currently offline Olaf BergengruenFriend
Messages: 127
Registered: November 2018
Senior Member
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 67 times)

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Re: GRE-in-UDP for MCData IP Connectivity [message #1855823 is a reply to message #1855810] Sat, 05 November 2022 17:48 Go to previous message
Olaf Bergengruen is currently offline Olaf BergengruenFriend
Messages: 127
Registered: November 2018
Senior Member
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

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