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feat: replace ProtocolName with AsRef<str>

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Previously, a protocol could be any sequence of bytes as long as it started with `/`. Now, we directly parse a protocol as `String` which enforces it to be valid UTF8.

To notify users of this change, we delete the `ProtocolName` trait. The new requirement is that users need to provide a type that implements `AsRef<str>`.

We also add a `StreamProtocol` newtype in `libp2p-swarm` which provides an easy way for users to ensure their protocol strings are compliant. The newtype enforces that protocol strings start with `/`. `StreamProtocol` also implements `AsRef<str>`, meaning users can directly use it in their upgrades.

`multistream-select` by itself only changes marginally with this patch. The only thing we enforce in the type-system is that protocols must implement `AsRef<str>`.

Resolves: #2831.

Pull-Request: #3746.
This commit is contained in:
Thomas Eizinger
2023-05-04 05:47:11 +01:00
committed by GitHub
parent 30d0f598ef
commit c93f753018
68 changed files with 539 additions and 561 deletions
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4
protocols/perf/src/lib.rs
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@ -24,8 +24,10 @@
#![cfg_attr(docsrs, feature(doc_cfg, doc_auto_cfg))]
use libp2p_swarm::StreamProtocol;
pub mod client;
mod protocol;
pub mod server;
pub const PROTOCOL_NAME: &[u8; 11] = b"/perf/1.0.0";
pub const PROTOCOL_NAME: StreamProtocol = StreamProtocol::new("/perf/1.0.0");