To further tighten Nimbus against spam, this PR introduces a global
quota for block requests (shared between peers) as well as a general
per-peer request limit that applies to all libp2p requests.
* apply request quota before decoding message
* for high-bandwidth requests (blocks), apply a shared global quota
which helps manage bandwidth for high-peer setups
* add metrics
When connecting to hosts on shared IP/Port using TLS, SNI must be sent
to allow the remote server to provide the correct TLS certificate.
Bump the `nim-json-rpc` and `nim-websock` dependencies to send SNI ext.
`news` has a few open issues that are not present in `nim-websock`:
1. There is a 1 second delay between each MB of sent data.
2. Cancelling an ongoing `send` makes the entire WebSocket unusable.
3. Control packets do not have priority over ongoing message frames.
Using `news`, there are quite a few of these messages in Geth:
```
Previously seen beacon client is offline. Please ensure it is
operational to follow the chain!
```
It may take quite some time to reconnect when this happens.
Using `nim-websock`, this message still occurs because `eth1_monitor`
reconnects the EL connection when no new blocks occurred for 5 minutes,
but reconnecting is quick and the message is rarer.
When calling `newPayload` on a >1MB payload (can happen post-merge),
`news` splits up that payload into 1MB chunks. The chunks are each sent
individually, though, with `await` in-between. This means that when we
send concurrent `forkChoiceUpdated` calls, that those may end up getting
in-between the `newPayload` chunks, leading to invalid data being sent.
The EL then returns an error message with a `null` `id` entry (as it
could not read the request `id` due to the mangling) and disconnects.
A PR has been submitted to fix this in `news`, and merged into `status`
branch early as this fix is critical for reliable post-merge operation:
https://github.com/Tormund/news/pull/22
* Re-enabled requireAllFields after a fix in nim-json-serialization
The problem was that `Option[T]` fields were not treated as optional
when requireAllFields is set to true. This is now fixed in NJS.
* Add makefile targets for recreating the Jenkins simulation runs
* Fix a discrepancy with the REST spec
Jacek Sieka
tersec
zah
cheatfate
Etan Kissling
Jakub Sokołowski
Tanguy
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