fix(tonic): Remove Sync requirement for streams
#804
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LucioFranco
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Oct 22, 2021
Twey
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Jun 4, 2025
The boxed `Decoder` inside `Streaming` need not be `Sync` since hyperium#804. Unfortunately, that makes `Streaming` non-`Sync`, meaning that all the generated `tonic` futures cannot be awaited in `Sync` futures. In fact, the only times we use the `Decoder`, we have a `&mut` unique reference to it, so we are guaranteed not to require synchronization. The `sync_wrapper` crate encodes this reasoning, allowing us to safely make the `Streaming` type `Sync` regardless of whether the contained `Decoder` is `Sync` or not.
Twey
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Jun 4, 2025
The boxed `Decoder` inside `Streaming` need not be `Sync` since hyperium#804. Unfortunately, that makes `Streaming` non-`Sync`, meaning that all the generated `tonic` futures cannot be awaited in `Sync` futures. In fact, the only times we use the `Decoder`, we have a `&mut` unique reference to it, so we are guaranteed not to require synchronization. The `sync_wrapper` crate encodes this reasoning, allowing us to safely make the `Streaming` type `Sync` regardless of whether the contained `Decoder` is `Sync` or not.
Twey
added a commit
to Twey/tonic
that referenced
this pull request
Jun 4, 2025
The boxed `Decoder` inside `Streaming` need not be `Sync` since hyperium#804. Unfortunately, that makes `Streaming` non-`Sync`, meaning that all the generated `tonic` futures cannot be awaited in `Sync` futures. In fact, the only times we use the `Decoder`, we have a `&mut` unique reference to it, so we are guaranteed not to require synchronization. The `sync_wrapper` crate encodes this reasoning, allowing us to safely make the `Streaming` type `Sync` regardless of whether the contained `Decoder` is `Sync` or not.
Twey
added a commit
to Twey/tonic
that referenced
this pull request
Jun 4, 2025
The boxed `Decoder` inside `Streaming` need not be `Sync` since hyperium#804. Unfortunately, that makes `Streaming` non-`Sync`, meaning that all the generated `tonic` futures cannot be awaited in `Sync` futures. In fact, the only times we use the `Decoder`, we have a `&mut` unique reference to it, so we are guaranteed not to require synchronization. The `sync_wrapper` crate encodes this reasoning, allowing us to safely make the `Streaming` type `Sync` regardless of whether the contained `Decoder` is `Sync` or not.
LucioFranco
pushed a commit
that referenced
this pull request
Jun 20, 2025
The boxed `Decoder` inside `Streaming` need not be `Sync` since #804. Unfortunately, that makes `Streaming` non-`Sync`, meaning that all the generated `tonic` futures cannot be awaited in `Sync` futures. In fact, the only times we use the `Decoder`, we have a `&mut` unique reference to it, so we are guaranteed not to require synchronization. The `sync_wrapper` crate encodes this reasoning, allowing us to safely make the `Streaming` type `Sync` regardless of whether the contained `Decoder` is `Sync` or not.
dfawley
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Jul 11, 2025
* chore: Use symbolic link for license file (hyperium#2241) * chore: Use inline format argument (hyperium#2260) * chore: Add `flake.nix` (hyperium#2261) * chore: Fix interop test certs (hyperium#2262) * chore: Fix interop test certs * fix bash script: * fix: tls config overwrite in endpoint (hyperium#2252) * fix: tls config overwrite in endpoint PR hyperium#1866 fixed the breaking change introduced in hyperium#1731, but resets the TLS config without checking if `tls` is set. This patch resolves the regression and restores expected behaviour. * fix: cargo fmt whitespace check --------- Co-authored-by: vigneshwar.sm <[email protected]> Co-authored-by: Lucio Franco <[email protected]> * chore(tonic-bench): Fix failing bench (hyperium#2207) Co-authored-by: Lucio Franco <[email protected]> * feat: expose creation of HealthService and HealthReporter (hyperium#2251) * Expose creation of HealthService and HealthReporter * add default impl for HealthReporter * [spr] initial version (hyperium#2264) Created using spr 1.3.6-beta.1 * Revert "[spr] initial version (hyperium#2264)" (hyperium#2265) * chore: Prepare `v0.13.1` release Reviewers: Pull Request: hyperium#2266 * chore: Disable unused tower feature (hyperium#2270) * chore(ci): Set RUSTFLAGS only on check job (hyperium#2271) * chore: Update to webpki-roots 1 (hyperium#2269) * chore(ci): Update to cargo-check-external-types 0.2 (hyperium#2272) * chore(ci): Set token permission to read (hyperium#2275) * chore(test): Remove cargo-machete config (hyperium#2278) * chore: Remove unused dependency (hyperium#2277) * feat: add support for tower's load-shed layer (hyperium#2189) Refs: hyperium#1616 * chore: box Status contents (hyperium#2253) (hyperium#2282) * chore: box Status contents (hyperium#2253) * chore: use private into_status method * chore(doc): Fix outdated limit in comment (hyperium#2297) * fix outdated limit in comment This mention was missed when the default changed in hyperium#1335 * Add backquotes Co-authored-by: tottoto <[email protected]> --------- Co-authored-by: tottoto <[email protected]> * feat: Update to prost 0.14 (hyperium#2300) * chore: Start development of version 0.14 (hyperium#2303) * chore(build): Make empty client and server modules private (hyperium#2291) Co-authored-by: Lucio Franco <[email protected]> Co-authored-by: tottoto <[email protected]> * chore(test): Simplify skip debug test (hyperium#2305) * chore(ci): Exclude semver check of unreleased crate (hyperium#2304) * feat(types): Update error_details.proto to a56cbf3b (hyperium#2286) (hyperium#2306) * chore(test): Remove unnecessary prost-build dependency (hyperium#2307) * feat(transport): Allow setting TCP_KEEPINTVL and TCP_KEEPCNT (hyperium#2299) * Allow setting TCP_KEEPINTVL and TCP_KEEPCNT * fix windows * fix clippy windows * fix(tonic): make `Streaming` `Sync` again (hyperium#2293) The boxed `Decoder` inside `Streaming` need not be `Sync` since hyperium#804. Unfortunately, that makes `Streaming` non-`Sync`, meaning that all the generated `tonic` futures cannot be awaited in `Sync` futures. In fact, the only times we use the `Decoder`, we have a `&mut` unique reference to it, so we are guaranteed not to require synchronization. The `sync_wrapper` crate encodes this reasoning, allowing us to safely make the `Streaming` type `Sync` regardless of whether the contained `Decoder` is `Sync` or not. * feat: preserve user-agent header (hyperium#2290) Co-authored-by: Lucio Franco <[email protected]> * chore: Make publish script portable (hyperium#2313) * feat(tls): Add tls handshake timeout support (hyperium#2309) Co-authored-by: tottoto <[email protected]> * docs(tonic-build): remove doc-difference between `lib.rs` and Readme (hyperium#2308) * doc: try to improve the doc-disparity between `tonic-build`'s `lib.rs` and the readme * Fix indentation * fix the doctests * fix a typo and retes an assumption * Change `compile_fail` to `ignore` Co-authored-by: tottoto <[email protected]> --------- Co-authored-by: tottoto <[email protected]> * Merge changes from next to master branch (hyperium#2315) Co-authored-by: Arjan Singh Bal <[email protected]> Co-authored-by: Easwar Swaminathan <[email protected]> * chore(interop): Update to console 0.16 (hyperium#2318) * chore(test): Remove unnecessary tokio-stream dependency (hyperium#2311) * chore(test): Refactor default stubs test (hyperium#2310) * chore(test): Use tempfile crate to handle temporary file (hyperium#2325) * chore(grpc): Update to rand 0.9 (hyperium#2324) --------- Co-authored-by: tottoto <[email protected]> Co-authored-by: Lucio Franco <[email protected]> Co-authored-by: Vigneshwar S <[email protected]> Co-authored-by: vigneshwar.sm <[email protected]> Co-authored-by: Rafael RL <[email protected]> Co-authored-by: Leon Hartley <[email protected]> Co-authored-by: Joe Roback <[email protected]> Co-authored-by: Raphael Taylor-Davies <[email protected]> Co-authored-by: Alexis Darrasse <[email protected]> Co-authored-by: Alex Steele <[email protected]> Co-authored-by: Kristopher Wuollett <[email protected]> Co-authored-by: Makro <[email protected]> Co-authored-by: James Kay <[email protected]> Co-authored-by: Darren Bolduc <[email protected]> Co-authored-by: Honsun Zhu <[email protected]> Co-authored-by: Frank Elsinga <[email protected]> Co-authored-by: Arjan Singh Bal <[email protected]> Co-authored-by: Easwar Swaminathan <[email protected]>
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Removes the requirement for streaming request/responses to be
Sync.Dependent on:
UnsyncBoxBodycombinator http-body#50 and a releaseCloses #117