This moves the tracing RPC API implementation to package eth/tracers.
By doing so, package eth no longer depends on tracing and the duktape JS engine.

The change also enables tracing using the light client. All tracing methods work with the
light client, but it's a lot slower compared to using a full node.

When a sethead/rewind finds that the targeted block is missing, it resets to genesis instead of crashing. Closes #22129

This updates the goupnp dependency, fixing huin/goupnp#33

This PR fixes the receipt status field to be decimal instead of a hex string,
as called for by the spec.

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

This updates go module dependencies as discussed in #22050.

* eth/protocols/snap: make timeout configurable

* eth/protocols/snap: snap sync testing

* eth/protocols/snap: test to trigger panic

* eth/protocols/snap: fix race condition on timeouts

* eth/protocols/snap: return error on cancelled sync

* squashme: updates + test causing panic + properly serve accounts in order

* eth/protocols/snap: revert failing storage response

* eth/protocols/snap: revert on bad responses (storage, code)

* eth/protocols/snap: fix account handling stall

* eth/protocols/snap: fix remaining revertal-issues

* eth/protocols/snap: timeouthandler for bytecode requests

* eth/protocols/snap: debugging + fix log message

* eth/protocols/snap: fix misspelliings in docs

* eth/protocols/snap: fix race in bytecode handling

* eth/protocols/snap: undo deduplication of storage roots

* synctests: refactor + minify panic testcase

* eth/protocols/snap: minor polishes

* eth: minor polishes to make logs more useful

* eth/protocols/snap: remove excessive logs from the test runs

* eth/protocols/snap: stress tests with concurrency

* eth/protocols/snap: further fixes to test cancel channel handling

* eth/protocols/snap: extend test timeouts on CI

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

* cmd, geth: Reflect command being optional - closes 22218

* cmd, geth: Set current year to 2021

* cmd, geth: Reflect command being optional - closes 22218

* cmd, geth: Set current year to 2021

It takes three lines of code to get to runtime.nanotime, no need to
pull a dependency for that.

Fixes a special case when the trie only has a single trie node and the range proof only contains a single element.

This adds a way to get the error of the failing subscription
for logging/debugging purposes.

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

This fixes #22131 and adds a test reproducing the issue.

core: improve trie updates (part 2)

Squashed from the following commits:

core/state: lazily init snapshot storage map
core/state: fix flawed meter on storage reads
core/state: make statedb/stateobjects reuse a hasher
core/blockchain, core/state: implement new trie prefetcher
core: make trie prefetcher deliver tries to statedb
core/state: refactor trie_prefetcher, export storage tries
blockchain: re-enable the next-block-prefetcher
state: remove panics in trie prefetcher
core/state/trie_prefetcher: address some review concerns

sq

This is a simple refactoring, extracting common ancestor
negotiation logic to named function

This PR introduces a new config field SyncFromCheckpoint for light client.

In some special scenarios, it's required to start synchronization from some
arbitrary checkpoint or even from the scratch. So this PR offers this
flexibility to users so that the synchronization start point can be configured.

There are two relevant configs: SyncFromCheckpoint and Checkpoint.

- If the SyncFromCheckpoint is true, the light client will try to sync from the
  specified checkpoint.

- If the Checkpoint is not configured, then the light client will sync from the
  scratch(from the latest header if the database is not empty)

Additional notes: these two configs are not visible in the CLI flags but only
accessable in the config file.

Example Usage:

[Eth]
SyncFromCheckpoint = true

[Eth.Checkpoint]
SectionIndex = 100
SectionHead = "0xabc"
CHTRoot = "0xabc"
BloomRoot = "0xabc"

PS. Historical checkpoint can be retrieved from the synced full node or light
client via les_getCheckpoint API.

Adding warnings of free disk space left and graceful shutdown when there is not enough space left.
This also adds a flag datadir.minfreedisk which can be used to set the trigger for low disk space, and setting it to zero disables the check. 

Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Felix Lange <fjl@twurst.com>

* core/state/snapshot: write snapshot generator in batch

* core: refactor the tests

* core: update tests

* core: update tests

* cmd/geth: dump config

* cmd/geth: dump config

* cmd/geth: properly read config again

* cmd/geth: override metrics if flags are set

* cmd/geth: write metrics regardless if enabled

* cmd/geth: renamed to metricsfromcliargs

* metrics: add default configuration

* tests/fuzzers/abi: better test generation

* tests/fuzzers/abi: fixed packing issue

* oss-fuzz: enable abi fuzzer

This PR has two changes in the les protocol:

- the auxRoot is not supported. See ethereum/devp2p#171 for more information
- the empty response will be returned in GetHelperTrieProofsMsg request if the merkle
   proving is failed. note, for backward compatibility, the empty merkle proof as well as
   the request auxiliary data will still be returned in  les2/3 protocol no matter the proving
   is successful or not. the proving failure can happen e.g. request the proving for a
   non-included entry in helper trie (unstable header).

core/state/snapshot: add generation logs to storage too

cmd/faucet: update the embedded website asset

The tests sometimes failed with certain go versions because
the behavior of http.Server.Shutdown changed over time. A bug
that was fixed in Go 1.15 could cause active connections on unrelated
servers to close unexpectedly. This is fixed by avoiding use of the
same port number in all tests.

It seems that the 2 second timeout is not enough for Travis CI:

   --- FAIL: TestTestMode (2.00s)
       ethash_test.go:53: sealing result timeout

This solves an issue in graphql tests:

    graphql_test.go:38: could not create new node: datadir already used by another process

USB enumeration still occured. Make sure it will only occur if --usb is set.
This also deprecates the 'NoUSB' config file option in favor of a new option 'USB'.

* deps: use improved bloom filter implementation

* eth/handler, trie: use 4 keys for syncbloom + minor fixes

* eth/protocols, trie: revert change on syncbloom method signature

Resolves https://github.com/etclabscore/core-geth/issues/273



jsre.JSRE already handles establishing preload
file paths relative to the 'assets' path (aka docroot),
where it joins the assets dir and the file path if relative,
or uses the file path only if absolute.

The duplication of this logic by MakeConsolePreloads
caused preloaded files to have paths which contained
duplicate references to the assets dir path.

Date: 2020-12-30 08:25:01-06:00
Signed-off-by: meows <b5c6@protonmail.com>

This changes the chainID RPC method to return an error when EIP-155 is not yet
active at the current block height. It used to simply return zero in this case, but
that's confusing.