feat: introduce InflightProtocolDataQueue
#4834
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@mxinden Ready for review. Only has draft status because I want to adapt more protocols if we agree on the design. |
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cc @dgarus You might enjoy this change :) |
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This pull request has merge conflicts. Could you please resolve them @thomaseizinger? 🙏 |
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@mxinden The last commit experiments with a |
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Nov 15, 2023
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| async move { | ||
| let stream = receiver | ||
| .await | ||
| .map_err(|_| io::Error::from(io::ErrorKind::BrokenPipe))? | ||
| .map_err(into_reserve_error)?; | ||
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| let reservation = outbound_hop::make_reservation(stream).await?; | ||
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| Ok(reservation) | ||
| }, |
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As an added benefit, the timeout of FuturesTupleSet now also applies to the entire stream opening.
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Description
This PR prototypes what I termed an
InflightProtocolDataQueue. It is essentially a replacement forConnectionHandler::OutboundOpenInfo, just slightly more generic. In essence, it allows users to submit a request to the queue, together with a piece of data and later submit responses.Internally, the responses are matched with a pending piece of data and later returned. Assuming the functions are called in the right order (which is an invariant that
libp2p-swarmshould uphold), this frees users from having to worry about tracking state separately.Resolves: #4510.
Related: #3268.
Notes & open questions
Opening this PR for early feedback. In a follow-up PR, I'd then deprecate
InboundOpenInfoandOutboundOpenInfoand point users towards the newlibp2p-protocol-utilscrate and theInflightProtocolDataQueue.Change checklist