1. Use empty `prefix` instead of nil `preifx` in order to avoid RPC server
exceptions.
2. Allow to omit `start` parameter` if `maxCount` is not specified.
3. Use empty `start` instead of nil `start` to avoid RPC server
exceptions.
It should be performed before we're able to process blocks or before we
shutdown (which uses addition lock), fix
panic: assignment to entry in nil map
goroutine 5755 [running]:
github.com/nspcc-dev/neo-go/pkg/core/storage.(*MemoryStore).drop(...)
/home/rik/dev/neo-go/pkg/core/storage/memory_store.go:74
github.com/nspcc-dev/neo-go/pkg/core/storage.(*MemoryStore).PutChangeSet(0xc00093e700, 0xc0002051a0, 0xc000205200, 0x1, 0x1)
/home/rik/dev/neo-go/pkg/core/storage/memory_store.go:100 +0x25c
github.com/nspcc-dev/neo-go/pkg/core/storage.(*MemoryStore).PutBatch(...)
/home/rik/dev/neo-go/pkg/core/storage/memory_store.go:90
github.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).removeOldStorageItems(0xc000206a00)
/home/rik/dev/neo-go/pkg/core/blockchain.go:495 +0x33a
created by github.com/nspcc-dev/neo-go/pkg/core.(*Blockchain).jumpToStateInternal
/home/rik/dev/neo-go/pkg/core/blockchain.go:553 +0x68a
FAIL github.com/nspcc-dev/neo-go/pkg/core 52.084s
Consensus can require conflicting transactions and it can require more
transactions than mempool can fit, all of this should work. Transactions will
be checked anyway using its secondary mempool. See the scenario from #668.
Notice that it makes the node accept Extensible payloads with any category
which is the same way C# node works. We're trusting Extensible senders,
improper payloads are harmless until they DoS the network, but we have some
protections against that too (and spamming with proper category doesn't differ
a lot).
Compiler forces notification parameters to match the one specified in
manifest, and manifest of `test_contract.go` tells that `to` parameter
type is hash160:
```
event 'Transfer' should have 'Hash160' as type of 1 parameter, got: ByteArray
```
GAS and NEO tokens are sent to validators account (not the committee's
one). For single-node chain they are the same, but for four-nodes chain
they are different. Thus, use validators multisig address to create new
accounts and to deploy contracts.
Also, allow to provide desired account balance while creating new
account.
Update includes:
1. New simple client mode that parses erroneous status codes as `error` and
returns them from the calls of the client methods.
2. `Client` is struct now, not an interface.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
