Add IEC62056 (DLMS/COSEM) protocol dissector

[0xA50C1A1]

Please sign (check) the below before submitting the Pull Request:

• I have signed the ntop Contributor License Agreement at https://github.com/ntop/legal/blob/main/individual-contributor-licence-agreement.md
• I have read the contributing guide lines at https://github.com/ntop/nDPI/blob/dev/CONTRIBUTING.md
• I have updated the documentation (in doc/) to reflect the changes made (if applicable)

Describe changes:

DLMS is a protocol used to communicate with water, gas and electricity meters.

[0xA50C1A1]

Looks like that JA4 related commits broke the build.

[0xA50C1A1]

@IvanNardi Thanks for the review, I've fixed it.

[IvanNardi]

@0xA50C1A1, could you confirm that Wireshark is not able to recognize this protocol?

[0xA50C1A1]

@0xA50C1A1, could you confirm that Wireshark is not able to recognize this protocol?

Unfortunately, there is still no plugin for this protocol in Wireshark. Well, there was one out-of-tree plugin, but its development has long been abandoned. There's also a Lua script. By the way, I got that pcap samples from these two repositories.

[sonarcloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[IvanNardi]

@0xA50C1A1, could you confirm that Wireshark is not able to recognize this protocol?

Unfortunately, there is still no plugin for this protocol in Wireshark. Well, there was one out-of-tree plugin, but its development has long been abandoned. There's also a Lua script. By the way, I got that pcap samples from these two repositories.

Thanks for this information. I added it to doc/protocols.rst

[IvanNardi]

I am learning a lot of interesting uncommon stuff these days... :)
Thanks!