Documentation is outdated: IPROTO_VERSION is at least 6, not 3

[LaNdErTiS]

Bug description

Hi Tarantool team,

I'm writing to report inaccuracy in the official documentation regarding the iproto protocol version. I have found in the source code that the documentation needs to be updated.

The documentation for IPROTO_VERSION states that the latest protocol version is 3. https://www.tarantool.io/en/doc/latest/reference/internals/iproto/keys/#iproto-version

However, evidence from both live traffic analysis and the official Python connector's source code indicates that the actual protocol version in use is significantly higher. CONNECTOR_IPROTO_VERSION = 6
https://github.com/tarantool/tarantool-python/blob/master/tarantool/connection.py#L885

Please update the documentation to reflect the current state of the iproto protocol. otherwise, please explain how the above should be interpreted

Thank you for your attention to this matter.

[Totktonada]

Thank you for the report!

The most actual version is 10:

https://github.com/tarantool/tarantool/blob/61b744cbc51d288f1bbdabe57e773fa4ee12261e/src/box/iproto_features.h#L141-L148

The last version change is in tarantool/tarantool@be34a84. The documentation request is here: #4561.

I'm going to move this issue to tarantool/doc to bring it into the documentation team attention.

[LaNdErTiS]

Thank you for your response and for clarifying the current IPROTO_VERSION!.

By the way, I developed an IPROTO packet sniffer during my investigation, which is how I initially discovered this discrepancy between the documentation and the actual implementation. I'd be happy to share this tool with the community if the team finds it useful. Such a tool could be valuable for testing and verifying protocol behavior in future.

Looking forward to the documentation update from the Tarantool documentation team.

[Totktonada]

@LaNdErTiS, feel free to open a pull request in https://github.com/tarantool/awesome-tarantool/

[AArdeev]

This ticket should be resolved as a result of #4561

[LaNdErTiS]

@LaNdErTiS, feel free to open a pull request in https://github.com/tarantool/awesome-tarantool/

@Totktonada hi, i can't open MR in https://github.com/tarantool/awesome-tarantool/ due to no rights to create branch
remote: {"auth_status":"access_denied_to_user","body":"Permission to tarantool/awesome-tarantool.git denied to LaNdErTiS."} fatal: unable to access 'https://github.com/tarantool/awesome-tarantool.git/': The requested URL returned error: 403

[Totktonada]

You can do it using the usual github's flow, when you create a fork, create a branch in it and send a pull request to the upstream repository from the fork's branch.

[LaNdErTiS]

thanks, tarantool/awesome-tarantool#11