Internal transactions

[MarcoGuarducci]

I would like to have this capability to geth.

[karalabe]

You can use a call tracer to trace a transaction after it's been included.

debug.traceTransaction(<hash>, {tracer: callTracer})

It however only trance transactions whose state is still available in the database (i.e. last 128 blocks), or you'd need to regenerate the state (expensive). There are some further details here #15516

[MarcoGuarducci]

Thanks karalabe.
Unfortunately tracetransaction is too slow and consumes too much CPU. Moreover it is not suitable for a massive use as for example the development of an explorer. That's why I developed simple optional changes to geth to store internal transactions in the leveldb database when they are generated by the virtual machine and i like to contribute to geth project pushing it.

[ramilexe]

@MarcoGuarducci do you have PR or branch with your changes?