chore: release v0.5.0

[github-actions]

🤖 New release

• socketeer: 0.4.0 -> 0.5.0 (⚠ API breaking changes)

⚠ socketeer breaking changes

--- failure enum_marked_non_exhaustive: enum marked #[non_exhaustive] ---

Description:
A public enum has been marked #[non_exhaustive]. Pattern-matching on it outside of its crate must now include a wildcard pattern like `_`, or it will fail to compile.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#attr-adding-non-exhaustive
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/enum_marked_non_exhaustive.ron

Failed in:
  enum Error in /tmp/.tmpETh1qo/socketeer/src/error.rs:8

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/enum_variant_added.ron

Failed in:
  variant EchoControlMessage:Abort in /tmp/.tmpETh1qo/socketeer/src/mock_server.rs:31

--- failure struct_marked_non_exhaustive: struct marked #[non_exhaustive] ---

Description:
A public struct has been marked #[non_exhaustive], which will prevent it from being constructed using a struct literal outside of its crate. It previously had no private fields, so a struct literal could be used to construct it outside its crate.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#attr-adding-non-exhaustive
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/struct_marked_non_exhaustive.ron

Failed in:
  struct ConnectOptions in /tmp/.tmpETh1qo/socketeer/src/config.rs:14

--- failure struct_pub_field_missing: pub struct's pub field removed or renamed ---

Description:
A publicly-visible struct has at least one public field that is no longer available under its prior name. It may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/struct_pub_field_missing.ron

Failed in:
  field extra_headers of struct ConnectOptions, previously in file /tmp/.tmpt45jcO/socketeer/src/config.rs:14
  field keepalive_interval of struct ConnectOptions, previously in file /tmp/.tmpt45jcO/socketeer/src/config.rs:17
  field custom_keepalive_message of struct ConnectOptions, previously in file /tmp/.tmpt45jcO/socketeer/src/config.rs:21

--- failure struct_pub_field_now_doc_hidden: pub struct field is now #[doc(hidden)] ---

Description:
A pub field of a pub struct is now marked #[doc(hidden)] and is no longer part of the public API.
        ref: https://doc.rust-lang.org/rustdoc/write-documentation/the-doc-attribute.html#hidden
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.48.0/src/lints/struct_pub_field_now_doc_hidden.ron

Failed in:
  field ConnectOptions.extra_headers in file /tmp/.tmpETh1qo/socketeer/src/config.rs:14
  field ConnectOptions.keepalive_interval in file /tmp/.tmpETh1qo/socketeer/src/config.rs:14
  field ConnectOptions.custom_keepalive_message in file /tmp/.tmpETh1qo/socketeer/src/config.rs:14

Changelog

[0.5.0] - 2026-06-30

Features

• Add Socketeer::split into cloneable Tx and receive Rx halves(dc7f9ff)
• Add fire-and-forget send_unconfirmed to SocketeerTx(35a9b8b)
• Implement Stream for SocketeerRx(7a3f80e)
• Add SocketeerRx::reunite and ReuniteError(5eb9aa1)
• Implement Stream for Socketeer(27f16d8)
• Keep protocol alive under receive backpressure(d102d7a)
• Raise default channel size to 256 and document backpressure(cc74966)
• Re-export Message, Bytes, http, tungstenite, and WebSocketStreamType(f4b5453)
• [breaking] ConnectOptions builder with private fields, non_exhaustive(978b36a)
• [breaking] Mark Error #non_exhaustive

Bug Fixes

• Surface the real disconnect cause to the consumer(3b5c08f)
• Align split-half CHANNEL_SIZE defaults to 256 and tighten docs(8caa0aa)
• Export ConnectOptionsBuilder, correct header() doc, and strengthen test(12c034a)

Refactor

• Extract socket loop into its own module, move e2e tests to tests/(b7ec286)
• Make TxChannelPayload response channel optional(7dc850c)
• Share receive path between handle and split halves(4d84f9c)
• [breaking] Move backpressure_probe_server into the test suite(84b42fa)

Documentation

• Design spec for backpressure without protocol starvation (PR 2)(d9c7088)
• Implementation plan for backpressure resilience (PR 2)(6a5dc4f)
• Design for public API cleanup (breaking)(049f0e0)
• Implementation plan for public API cleanup(9dc41cb)

Testing

• Cover concurrent cloned-Tx sends and ReuniteError Display/Error(9f0aaab)
• Add backpressure probe mock server(2420313)
• Cover backpressure delivery without keepalives(62fa77d)
• Cover outgoing sends during backpressure(48d57c9)

---

This PR was generated with release-plz.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.86%. Comparing base (a42ef72) to head (d72ff7f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #18   +/-   ##
=======================================
  Coverage   94.86%   94.86%           
=======================================
  Files           7        7           
  Lines         662      662           
=======================================
  Hits          628      628           
  Misses         34       34           

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