I would recommend adding the new method and deprecating (as in warning against using) the old one for one major release. Then removing it altogether in the following major release.

I have written a Java RPC client and Groovy/Spock functional tests <https://github.com/msgilligan/bitcoin-spock> that use the current call. A separate `generate` or `generateblocks` call is a great idea.

However, I try to keep my tests compatible with the current stable and unstable versions of Bitcoin Core (and the Omni Core fork) and would have to write code that checks the RPC server version (or checks for the presence of the new call, falling back to the old one) to support the use cases that I need to support. Not a huge deal, but I'm probably not the only one.

-- Sean


On 4/12/15 7:26 AM, Pieter Wuille wrote:
Hello everyone,

Bitcoin Core's `setgenerate` RPC call has had a special meaning for -regtest (namely instantaneously mining a number of blocks, instead of starting a background CPU miner).

We're planning to deprecate that overloaded behaviour, and replace it with a separate RPC call `generate`. Is there any software or user who would need compatibility with the old behaviour? We're generally very conservative in changing RPC behaviour, but as this is not related to any production functionality, we may as well just switch it.

Note that the bitcoin.org developer documentation will need to be updated.

--
Pieter



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