This PR significantly changes the APIs for instantiating Ethereum nodes in
a Go program. The new APIs are not backwards-compatible, but we feel that
this is made up for by the much simpler way of registering services on
node.Node. You can find more information and rationale in the design
document: https://gist.github.com/renaynay/5bec2de19fde66f4d04c535fd24f0775.

There is also a new feature in Node's Go API: it is now possible to
register arbitrary handlers on the user-facing HTTP server. In geth, this
facility is used to enable GraphQL.

There is a single minor change relevant for geth users in this PR: The
GraphQL API is no longer available separately from the JSON-RPC HTTP
server. If you want GraphQL, you need to enable it using the
./geth --http --graphql flag combination.

The --graphql.port and --graphql.addr flags are no longer available.

* Do not check for a non-nil ChainId

* Add encoding test

Resolves #20163

Co-authored-by: Felix Lange <fjl@twurst.com>

Found by @protolambda 

core: sort txs at the same gas price by received time

This replaces the two-stage shutdown scheme with the one we
use almost everywhere else: a single quit channel signalling
termination.

Co-authored-by: Felix Lange <fjl@twurst.com>

* Disable symbol table and DWARF generation by default.
Trimpath if compiling with Go >= 1.13

* Set Go to minimum version 1.13. Revert debug symbol changes.

* init

notes

removed some mentions of eth62, bumped protocol err too old to >=63

* remove sanity checks and bump supported protocol version up to 63

* remove 62 tests, still need to add 65

* remove 65 tests

This reduces complexity of some lengthy functions in worker.go,
making the code easier to read.

* cmd, consensus, eth, les: implement light fetcher

* les: address comment

* les: address comment

* les: address comments

* les: check td after delivery

* les: add linearExpiredValue for error counter

* les: fix import

* les: fix dead lock

* les: order announces by td

* les: encapsulate invalid counter

* les: address comment

* les: add more checks during the delivery

* les: fix log

* eth, les: fix lint

* eth/fetcher: address comment

* cmd, core, eth, light, trie: dump clean cache periodically

* eth: update config

* trie: minor fix

* core, trie: address comments

* eth: remove useless

* trie: print clean cache dump start too

Co-authored-by: Péter Szilágyi <peterke@gmail.com>

deps: update uint256 to v1.1.1

core: fix queued transaction eviction

core: address comment

Solves issue#20582. Non-executable transactions should not be evicted on each tick if there are no promote transactions or if a pending/reset empties the pending list. Tests and logging expanded to handle these cases in the future.

core/tx_pool: use a ts for each tx in the queue, but only update the heartbeat on promotion or pending replaced

queuedTs proper naming

* eth/downloader: refactor downloader + queue

downloader, fetcher: throttle-metrics, fetcher filter improvements, standalone resultcache

downloader: more accurate deliverytime calculation, less mem overhead in state requests

downloader/queue: increase underlying buffer of results, new throttle mechanism

eth/downloader: updates to tests

eth/downloader: fix up some review concerns

eth/downloader/queue: minor fixes

eth/downloader: minor fixes after review call

eth/downloader: testcases for queue.go

eth/downloader: minor change, don't set progress unless progress...

eth/downloader: fix flaw which prevented useless peers from being dropped

eth/downloader: try to fix tests

eth/downloader: verify non-deliveries against advertised remote head

eth/downloader: fix flaw with checking closed-status causing hang

eth/downloader: hashing avoidance

eth/downloader: review concerns + simplify resultcache and queue

eth/downloader: add back some locks, address review concerns

downloader/queue: fix remaining lock flaw

* eth/downloader: nitpick fixes

* eth/downloader: remove the *2*3/4 throttling threshold dance

* eth/downloader: print correct throttle threshold in stats

Co-authored-by: Péter Szilágyi <peterke@gmail.com>

This fixes the iOS framework build by naming the second parameter of the
Signer interface method. The name is important because it becomes part
of the objc method signature.

Fixes #21340

* geth,utils: implement configurable developer account options

Prior to this change --dev (developer) mode
generated one account with an empty password,
irrespective of existing --password and --miner.etherbase
options.

This change makes --dev mode compatible with these
existing flags.

--dev mode may now be used in conjunction with
--password and --miner.etherbase flags to configure
the developer faucet using an existing keystore or
in creating a new account.

Signed-off-by: meows <b5c6@protonmail.com>

* main: remove key/pass flags from usage developer section

These flags are included already in other sections,
and it is not desired to duplicate them.

They were originally included in this section
along with added support for these flags in the
developer mode.

Signed-off-by: meows <b5c6@protonmail.com>

cmd/utils: reuse existing genesis in persistent dev mode

Fixes #21175

Co-authored-by: sammy007 <sammy007@users.noreply.github.com>
Co-authored-by: Adam Schmideg <adamschmideg@users.noreply.github.com>

core/vm: use pointers to operations vs. copy by value

* internal, accounts: fix funding check when estimate gas

* accounts, internal: address comments

ethstats: fix reconnection issue, implement primus pings