console: fixed comment typo

consensus/ethash: reduce notify test aggressiveness

miner: update mining log with correct fee calculation

* les: fix crasher in NodeInfo when running as server

The ProtocolManager computes CHT and Bloom trie roots by asking the
indexers for their current head. It tried to get the indexers from
LesOdr, but no LesOdr instance is created in server mode.

Attempt to fix this by moving the indexers, protocol creation and
NodeInfo to a new lesCommons struct which is embedded into both server
and client.

All this setup code should really be cleaned up, but this is just a
hotfix so we have to do that some other time.

* les: fix commons protocol maker

crypto/bn256: fix issues caused by Go 1.11

consensus/ethash: use DAGs for remote mining, generate async

miner: add gas and fee details to mining logs

* miner: regenerate mining work every 3 seconds

* miner: polish

cmd/puppeth: fix nil panic on disconnected stats gathering

This PR enables the indexers to work in light client mode by
downloading a part of these tries (the Merkle proofs of the last
values of the last known section) in order to be able to add new
values and recalculate subsequent hashes. It also adds CHT data to
NodeInfo.

Co-authored-by: Janos Guljas <janos@resenje.org>
Co-authored-by: Anton Evangelatov <anton.evangelatov@gmail.com>
Co-authored-by: Balint Gabor <balint.g@gmail.com>

* miner: stream uncle block

* miner: polish

cmd: polish miner flags, deprecate olds, add upgrade path

* backends: increase gaslimit in order to allow tests of large contracts

* backends: increase gaslimit in order to allow tests of large contracts

* backends: increase gaslimit in order to allow tests of large contracts

This PR implements les.freeClientPool. It also adds a simulated clock
in common/mclock, which enables time-sensitive tests to run quickly
and still produce accurate results, and package common/prque which is
a generalised variant of prque that enables removing elements other
than the top one from the queue.

les.freeClientPool implements a client database that limits the
connection time of each client and manages accepting/rejecting
incoming connections and even kicking out some connected clients. The
pool calculates recent usage time for each known client (a value that
increases linearly when the client is connected and decreases
exponentially when not connected). Clients with lower recent usage are
preferred, unknown nodes have the highest priority. Already connected
nodes receive a small bias in their favor in order to avoid accepting
and instantly kicking out clients.

Note: the pool can use any string for client identification. Using
signature keys for that purpose would not make sense when being known
has a negative value for the client. Currently the LES protocol
manager uses IP addresses (without port address) to identify clients.

* miner: move agent logic to worker

* miner: polish

* core: persist block before reorg

* swarm/network, swarm/storage: validate default chunk size

* swarm/bmt, swarm/network, swarm/storage: update BMT hash initialisation

* swarm/bmt: move segmentCount to tests

* swarm/chunk: change chunk.DefaultSize to be untyped const

* swarm/storage: add size validator

* swarm/storage: add chunk size validation to localstore

* swarm/storage: move validation from localstore to validator

* swarm/storage: global chunk rules in MRU

Signed-off-by: YaoZengzeng <yaozengzeng@zju.edu.cn>

Changes in #15811 broke partial topic filtering. Re-enable it.

cmd, consensus/ethash, eth: miner push notifications

* cmd/swarm: fix manifest subcommands and add tests

* cmd/swarm: manifest update: update default entry for non-encrypted uploads

* swarm/api: upload defaultpath file only once

* swarm/api/client: improve UploadDirectory default path handling

* cmd/swarm: support absolute and relative default path values

* cmd/swarm: fix a typo in test

* cmd/swarm: check encrypted uploads in manifest update tests