Version Control on Transacitons

[Jim8y]

Summary or problem description
Since neo N3 support smart contract update, I think it is necessary for users to know which contract version are they calling.

Do you have any solution you want to propose?
And user should be able to set the Transaciton be valid only to specific version.

something like assert(version ==3)

Neo Version

• Neo 3

Where in the software does this update applies to?

• SDK

[roman-khimov]

We call contracts either via System.Contract.Call or CALLT. It's pretty trivial to add System.Contract.CallWithVersion as an alternative for people that want/need it, but I'm not so sure about CALLT, token specification is a part of NEF.

[dusmart]

There is some GAS-expensive way for this purpose now.

ExecutionEngine.Assert(ContractManagement.GetContract(Hash).UpdateCounter == 3, "invalid version");