Producer incoming-transaction-queue-size-mb

[heifner]

Change Description

• Add producer_plugin incoming-transaction-queue-size-mb so that incoming transactions can be rejected with tx_resource_exhaustion exception when queue is full.
• This is useful for a new transaction only connection option that is in work for the net_plugin.

Consensus Changes

• Consensus Changes

API Changes

• API Changes

Documentation Additions

• Documentation Additions

[b1bart]

we used to do this check first, is there concern that block_time may move backwards? otherwise this seems like it may store an expired transaction in the _pending_incoming_transaction queue

[b1bart]

oh, I'm incorrect it was always in this order. But perhaps we should swap these now such that we check expiration before storing on the pending list.

Same with other early outs like is_known_unexpired_transaction . I am relatively sure that even when faced with forking conditions any transaction that returns true will end up on the unapplied transactions list and therefore not need to be duplicated in our pending queue.

[heifner]

I left it that way because pending_block_time is not available if !chain.is_building_block(). Changed it to use either pending block time or head block time.