feat(iroh)!: expose DynProtocolHandler

[Frando]

Description

This makes DynProtocolHandler public to make building custom routers easier.

Breaking Changes

• iroh::protocol::RouterBuilder::accept now takes impl Into<Box<dyn DynProtocolHandler>> instead of impl ProtocolHandler. Because of a blanket From impl this change does not need any changes by users: you can still pass any impl ProtocolHandler to accept. Additionally, if you have your own builder struct upstream, you can now also pass a Box<dyn DynProtocolHandler> to accept, which wasn't possible previously.

Notes & open questions

Change checklist

• Self-review.
• Documentation updates following the style guide, if relevant.
• All breaking changes documented.
  • List all breaking changes in the above "Breaking Changes" section.
  • Open an issue or PR on any number0 repos that are affected by this breaking change. Give guidance on how the updates should be handled or do the actual updates themselves. The major ones are:
    • quic-rpc
    • iroh-gossip
    • iroh-blobs
    • dumbpipe
    • sendme

[github-actions]

Documentation for this PR has been generated and is available at: https://n0-computer.github.io/iroh/pr/3366/docs/iroh/

Last updated: 2025-06-26T11:43:24Z

[github-actions]

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Last updated for commit: 54ae027