This commit extends the ethclient test suite and increases code coverage of the ethclient
package from ~15% to >55%. These tests act as early smoke tests to signal issues in the
RPC-interface. E.g. if a functionality like eth_chainId or eth_call breaks, the test
will break.

* cmd/faucet: avoid encoding for each client

* cmd/faucet: fix flaw in clearing of txs, avoid sending more than necessary

* cmd/faucet: fix flaw in tx cropping

* cmd/faucet: revert change to not always send tx info

* cmd/faucet: review fixes

* cmd/faucet: revert #22018, fix order in UI

* cmd/faucet: fix lock error

* cmd/faucet: revert json changes

* squashme

cmd/faucet: switch Facebook auth over to mobile site

* eth/protocols/snap: speed up hash checks

* eth/protocols/snap: nit fix

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

cmd/faucet: fix websocket race regression after switching to gorilla

* eth/protocols/snap: reschedule missed deliveries

* eth/protocols/snap: clarify log message

* eth/protocols/snap: revert failures async and update runloop

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

cmd/utils, eth/downloader: minor snap nitpicks

* estimateGas, cumulativeGas
* linted
* add test for estimateGas

* crypto/bls12381: fixed ineffectual assignment

* crypto/signify: fix ineffectual assignment

Solidity 0.8.0 changes the way that output is marshalled. This patch allows to parse both
the legacy format used previously and the new format.

See also https://docs.soliditylang.org/en/breaking/080-breaking-changes.html#interface-changes

* cmd/geth: added --mainnet flag

* cmd/utils: set default genesis if --mainnet is specified

* cmd/utils: addressed comments

This changes the JSON encoding of blocks returned by the API
to have decimal instead of hexadecimal numbers. The spec wants
it this way.

Co-authored-by: Martin Holst Swende <martin@swende.se>

This PR removes a logic in the miner, which was originally intended to help temporary testnets based on ethash from "running off into the future". If the difficulty was low, and a few computers started mining several blocks per second, the ethash rules (which demand 1s delay between blocks) would push the blocktimes further and further away.
The solution was to make the miner sleep while this happened.

Nowadays, this problem is solved instead by PoA chains, and it's recommended to let testnets and devnets be based on clique instead. The existing logic is problematic, since it can cause stalls within the miner making it difficult for remote workers to submit work if the channel is blocked on a sleep.

Credits to Saar Tochner for reporting this via the bug bounty

cmd: support v1.1 Twitter API in faucet, fix puppeth

Add links to go-ethereum's GitHub release page.

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

closes #22049

* eth/tracers: share tx gas price with js tracer

* eth/tracers: use `go generate`

* eth/tracers: try with another version of go-bindata

* eth/tracers: export txGas

* eth, eth/tracers: pass intrinsic gas to js tracers

eth/tracers: include tx gas in tracers usedGas

eth/tracers: fix prestate tracer's sender balance

eth/tracers: rm unnecessary import

eth/tracers: pass intrinsicGas separately to tracer

eth/tracers: fix tests broken by lack of txdata

eth, eth/tracers: minor fix

* eth/tracers: regenerate assets + unexport test-struct + add testcase

* eth/tracers: simplify tests + make table-driven

Co-authored-by: Guillaume Ballet <gballet@gmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>

The legacy dot-org URL was displaying a message about the repository
having migrated to the dot-com service, which now covers open-source
projects as well.

* common,crypto: move fuzzers out of core

* fuzzers: move vm fuzzer out from core

* fuzzing: rework cover package logic

* fuzzers: lint

During the snap and eth refactor, the net_version rpc call was falsely deprecated.
This restores the net_version RPC handler as most eth2 nodes and other software
depend on it.