Early but functional prototype of the new `p2p.Router`, see its GoDoc comment for details on how it works. Expect much of this logic to change and improve as we evolve the new P2P stack.
There is a simple test that sets up an in-memory network of four routers with reactors and passes messages between them, but otherwise no exhaustive tests since this is very much a work-in-progress.
E2E tests often fail due to fast sync stalls causing the validator to miss signing blocks. This increases the tolerance for missed signatures to 2/3 to allow validators to spend more time starting up.
#5852 fixed an issue with error propagation in `os.EnsureDir()`. However, this function is basically identical to `os.MkdirAll()`, and can be replaced entirely with a call to it. We keep the function for backwards compatibility.
blockchain/vX reactor priority was decreased because during the normal operation
(i.e. when the node is not fast syncing) blockchain priority can't be
the same as consensus reactor priority. Otherwise, it's theoretically possible to
slow down consensus by constantly requesting blocks from the node.
NOTE: ideally blockchain/vX reactor priority would be dynamic. e.g. when
the node is fast syncing, the priority is 10 (max), but when it's done
fast syncing - the priority gets decreased to 5 (only to serve blocks
for other nodes). But it's not possible now, therefore I decided to
focus on the normal operation (priority = 5).
evidence and consensus critical messages are more important than
the mempool ones, hence priorities are bumped by 1 (from 5 to 6).
statesync reactor priority was changed from 1 to 5 to be the same as
blockchain/vX priority.
Refs https://github.com/tendermint/tendermint/issues/5816
Bumps [github.com/cosmos/iavl](https://github.com/cosmos/iavl) from 0.15.2 to 0.15.3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/cosmos/iavl/releases">github.com/cosmos/iavl's releases</a>.</em></p>
<blockquote>
<h2>v0.15.3</h2>
<p><a href="257e8b9292/CHANGELOG.md (0153-december-21-2020)</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/cosmos/iavl/blob/master/CHANGELOG.md">github.com/cosmos/iavl's changelog</a>.</em></p>
<blockquote>
<h2>0.15.3 (December 21, 2020)</h2>
<p>Special thanks to external contributors on this release: <a href="https://github.com/odeke-em">@odeke-em</a></p>
<h3>Improvements</h3>
<ul>
<li><a href="https://github-redirect.dependabot.com/cosmos/iavl/pull/352">#352</a> Reuse buffer to improve performance of <code>GetMembershipProof()</code> and <code>GetNonMembershipProof()</code>.</li>
</ul>
</blockquote>
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<li><a href="257e8b9292"><code>257e8b9</code></a> changelog: release 0.15.3 (<a href="https://github-redirect.dependabot.com/cosmos/iavl/issues/353">#353</a>)</li>
<li><a href="b2dffed4b2"><code>b2dffed</code></a> convertVarIntToBytes: use reusable bytes array (<a href="https://github-redirect.dependabot.com/cosmos/iavl/issues/352">#352</a>)</li>
<li><a href="9e510e5a64"><code>9e510e5</code></a> github: run tests with 32-bit arch as well (<a href="https://github-redirect.dependabot.com/cosmos/iavl/issues/350">#350</a>)</li>
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@p4u from vocdoni.io reported that the mempool might behave incorrectly under a
high load. The consequences can range from pauses between blocks to the peers
disconnecting from this node.
My current theory is that the flowrate lib we're using to control flow
(multiplex over a single TCP connection) was not designed w/ large blobs
(1MB batch of txs) in mind.
I've tried decreasing the Mempool reactor priority, but that did not
have any visible effect. What actually worked is adding a time.Sleep
into mempool.Reactor#broadcastTxRoutine after an each successful send ==
manual control flow of sort.
As a temporary remedy (until the mempool package
is refactored), the max-batch-bytes was disabled. Transactions will be sent
one by one without batching
Closes#5796
When set to true, an invalid transaction will be kept in the cache (this may help some applications to protect against spam).
NOTE: this is a temporary config option. The more correct solution would be to add a TTL to each transaction (i.e. CheckTx may return a TTL in ResponseCheckTx).
Closes: #5751
Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.8.0 to 1.9.0.
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<h2>1.9.0 / 2020-12-17</h2>
<ul>
<li>[FEATURE] <code>NewPidFileFn</code> helper to create process collectors for processes whose PID is read from a file. <a href="https://github-redirect.dependabot.com/prometheus/client_golang/issues/804">#804</a></li>
<li>[BUGFIX] promhttp: Prevent endless loop in <code>InstrumentHandler...</code> middlewares with invalid metric or label names. <a href="https://github-redirect.dependabot.com/prometheus/client_golang/issues/823">#823</a></li>
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<h2>1.9.0 / 2020-12-17</h2>
<ul>
<li>[FEATURE] <code>NewPidFileFn</code> helper to create process collectors for processes whose PID is read from a file. <a href="https://github-redirect.dependabot.com/prometheus/client_golang/issues/804">#804</a></li>
<li>[BUGFIX] promhttp: Prevent endless loop in <code>InstrumentHandler...</code> middlewares with invalid metric or label names. <a href="https://github-redirect.dependabot.com/prometheus/client_golang/issues/823">#823</a></li>
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<li><a href="d89cf5af88"><code>d89cf5a</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/prometheus/client_golang/issues/826">#826</a> from prometheus/beorn7/release</li>
<li><a href="80ca9cdc4e"><code>80ca9cd</code></a> Cut release 1.9.0</li>
<li><a href="8d16199dea"><code>8d16199</code></a> Update dependencies</li>
<li><a href="8b73bd904c"><code>8b73bd9</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/prometheus/client_golang/issues/823">#823</a> from prometheus/beorn7/promhttp</li>
<li><a href="98eb6cbf7c"><code>98eb6cb</code></a> promhttp: Correctly detect invalid metric and label names</li>
<li><a href="37c26edd5b"><code>37c26ed</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/prometheus/client_golang/issues/821">#821</a> from prometheus/beorn7/multierror</li>
<li><a href="34ca120377"><code>34ca120</code></a> Be more explicit about the multi-line properties of MultiError</li>
<li><a href="fd6d368676"><code>fd6d368</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/prometheus/client_golang/issues/819">#819</a> from jubalh/sp</li>
<li><a href="cf6dc82780"><code>cf6dc82</code></a> Correct spelling: possibilites -> possibilities</li>
<li><a href="39b478e90c"><code>39b478e</code></a> Added example api code showing how to add auth tokens and user agents to prom...</li>
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Reflect the change made in https://github.com/tendermint/tendermint/pull/5805
The MTU (Maximum Transmission Unit) for Ethernet is 1500 bytes.
The IP header and the TCP header take up 20 bytes each at least (unless
optional header fields are used) and thus the max for (non-Jumbo frame)
Ethernet is 1500 - 20 -20 = 1460
Source: https://stackoverflow.com/a/3074427/820520
time_iota_ms is intended to ensure that an honest validator always generates timestamps
with time increasing monotonically. For this purpose, it always suffices to have this parameter
set to `1ms`. Allowing users to choose different numbers increases bug surface area.
Thus the code now ignores the user provided time_iota_ms parameter (marking it as unused),
and uses 1ms internally.
The MTU (Maximum Transmission Unit) for Ethernet is 1500 bytes.
The IP header and the TCP header take up 20 bytes each at least (unless
optional header fields are used) and thus the max for (non-Jumbo frame)
Ethernet is 1500 - 20 -20 = 1460
Source: https://stackoverflow.com/a/3074427/820520
