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dependabot[bot] a250652b3b Bump async-trait from 0.1.73 to 0.1.74 (#2730 )

Bumps [async-trait](https://github.com/dtolnay/async-trait) from 0.1.73
to 0.1.74.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/dtolnay/async-trait/releases">async-trait's
releases</a>.</em></p>
<blockquote>
<h2>0.1.74</h2>
<ul>
<li>Documentation improvements</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/dtolnay/async-trait/commit/265979b07a9af573e1edd3b2a9b179533cfa7a6c"><code>265979b</code></a>
Release 0.1.74</li>
<li><a
href="https://github.com/dtolnay/async-trait/commit/5e677097d2e67f7a5c5e3023e2f3b99b36a9e132"><code>5e67709</code></a>
Fix doc test when async fn in trait is natively supported</li>
<li><a
href="https://github.com/dtolnay/async-trait/commit/ef144aed28b636eb65759505b2323afc4c753fbe"><code>ef144ae</code></a>
Update ui test suite to nightly-2023-10-15</li>
<li><a
href="https://github.com/dtolnay/async-trait/commit/9398a28d6fc977ccf8c286bd85b4b87a883f92ac"><code>9398a28</code></a>
Test docs.rs documentation build in CI</li>
<li><a
href="https://github.com/dtolnay/async-trait/commit/8737173dafa371e5e9e491d736513be1baf697f4"><code>8737173</code></a>
Update ui test suite to nightly-2023-09-24</li>
<li><a
href="https://github.com/dtolnay/async-trait/commit/5ba643c001a55f70c4a44690e040cdfab873ba56"><code>5ba643c</code></a>
Test dyn Trait containing async fn</li>
<li><a
href="https://github.com/dtolnay/async-trait/commit/247c8e7b0b3ff69c9518ebf93e69fe74d47f17b6"><code>247c8e7</code></a>
Add ui test testing the recommendation to use async-trait</li>
<li><a
href="https://github.com/dtolnay/async-trait/commit/799db66a84834c403860df4a8c0227d8fb7f9d9d"><code>799db66</code></a>
Update ui test suite to nightly-2023-09-23</li>
<li><a
href="https://github.com/dtolnay/async-trait/commit/0e60248011f751d8ccf58219d0a79aacfe9619f1"><code>0e60248</code></a>
Update actions/checkout@v3 -&gt; v4</li>
<li><a
href="https://github.com/dtolnay/async-trait/commit/7fcbc83993d5ef483d048c271a7f6c4ac8c98388"><code>7fcbc83</code></a>
Update ui test suite to nightly-2023-08-29</li>
<li>See full diff in <a
href="https://github.com/dtolnay/async-trait/compare/0.1.73...0.1.74">compare
view</a></li>
</ul>
</details>
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2023-12-18 09:35:33 +01:00

src

Support querying peer reputation (#2392 )

2023-12-07 13:07:12 +02:00

Cargo.toml

Bump async-trait from 0.1.73 to 0.1.74 (#2730 )

2023-12-18 09:35:33 +01:00

README.md

Markdown linter (#1309 )

2023-09-04 12:02:32 +03:00

README.md

Polite gossiping.

This crate provides gossiping capabilities on top of a network.

Gossip messages are separated by two categories: "topics" and consensus engine ID. The consensus engine ID is sent over the wire with the message, while the topic is not, with the expectation that the topic can be derived implicitly from the content of the message, assuming it is valid.

Topics are a single 32-byte tag associated with a message, used to group those messages in an opaque way. Consensus code can invoke broadcast_topic to attempt to send all messages under a single topic to all peers who don't have them yet, and send_topic to send all messages under a single topic to a specific peer.

Usage

Implement the Network trait, representing the low-level networking primitives. It is already implemented on sc_network::NetworkService.
Implement the Validator trait. See the section below.
Decide on a ConsensusEngineId. Each gossiping protocol should have a different one.
Build a GossipEngine using these three elements.
Use the methods of the GossipEngine in order to send out messages and receive incoming messages.

What is a validator?

The primary role of a Validator is to process incoming messages from peers, and decide whether to discard them or process them. It also decides whether to re-broadcast the message.

The secondary role of the Validator is to check if a message is allowed to be sent to a given peer. All messages, before being sent, will be checked against this filter. This enables the validator to use information it's aware of about connected peers to decide whether to send messages to them at any given moment in time - In particular, to wait until peers can accept and process the message before sending it.

Lastly, the fact that gossip validators can decide not to rebroadcast messages opens the door for neighbor status packets to be baked into the gossip protocol. These status packets will typically contain light pieces of information used to inform peers of a current view of protocol state.

License: GPL-3.0-or-later WITH Classpath-exception-2.0