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feat(swarm): make stream uprade errors more ergonomic

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The currently provided `ConnectionHandlerUpgrErr` is very hard to use. Not only does it have a long name, it also features 3 levels of nesting which results in a lot of boilerplate. Last but not least, it exposes `multistream-select` as a dependency to all protocols.

We fix all of the above by renaming the type to `StreamUpgradeError` and flattening out its interface. Unrecoverable errors during protocol selection are hidden within the `Io` variant.

Related: #3759.

Pull-Request: #3882.
This commit is contained in:
Thomas Eizinger
2023-05-08 10:55:17 +02:00
committed by GitHub
parent 0e36c7c072
commit 81c424ea9e
23 changed files with 234 additions and 300 deletions
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4
swarm/src/lib.rs
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@ -122,8 +122,8 @@ pub use connection::pool::{ConnectionCounters, ConnectionLimits};
pub use connection::{ConnectionError, ConnectionId};
pub use executor::Executor;
pub use handler::{
ConnectionHandler, ConnectionHandlerEvent, ConnectionHandlerSelect, ConnectionHandlerUpgrErr,
KeepAlive, OneShotHandler, OneShotHandlerConfig, SubstreamProtocol,
ConnectionHandler, ConnectionHandlerEvent, ConnectionHandlerSelect, KeepAlive, OneShotHandler,
OneShotHandlerConfig, StreamUpgradeError, SubstreamProtocol,
};
#[cfg(feature = "macros")]
pub use libp2p_swarm_derive::NetworkBehaviour;