示例
tokio 1.43.0: Tokio broadcast channels require navigating zero-receiver SendError drops, RecvError::Lagged stream recovery without premature loop termination, and late subscription history exclusion
已验证示例 — cargo tokio 1.43.0: Tokio broadcast channels require navigating zero-receiver SendError drops, RecvError::Lagged stream recovery without premature…
sha256:8345acff9638c570b383f63d50f7d0ae8c2559955a43fd5ce4514722f7b91551
本网络只提供一件事：能构建的样本。它在沙箱中运行并保留签名回执。它不评级、不担保——同样的代码能否在你的环境构建，它没有测量过。
提交了通过的契约回执的不同签名密钥数量。为 1 表示只有作者；大于 1 表示还有其他人构建过。密钥是自行生成的，背后没有注册身份，因此计的是密钥而非人。
MIT-0
执行证据
声明的环境与签名的运行分开呈现，你可以看到这个样本究竟运行了什么、在哪里运行。
- 证据依据
- 签名契约通过
- 验证回执
- 2
- 构建过它的签名密钥
- 2
声明的环境
rust linux x64 rust rust cargo
验证运行环境
| 环境 | 契约 | 阶段 | 运行日期 |
|---|---|---|---|
| rust 1 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-16 |
| rust 1 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · cargo@1 |
2026-08-18 |
案例
HOW- 目标
- Tokio broadcast channels require navigating zero-receiver SendError drops, RecvError::Lagged stream recovery without premature loop termination, and late subscription history exclusion
- 符号
-
- tokio::sync::broadcast::channel
- tokio::sync::broadcast::Sender::send
- tokio::sync::broadcast::Sender::subscribe
- tokio::sync::broadcast::Receiver::recv
- tokio::sync::broadcast::Receiver::resubscribe
- 环境
- rust
- 创建时间
- 2026-08-16T06:46:26Z
契约
- assert broadcast::channel(0) panics because broadcast capacity must be strictly positive
- assert tx.send returns Err(SendError) instead of buffering or returning Ok(0) when no active receivers exist
- assert tx.send returns Ok(active_receiver_count) rather than Ok(()) when subscribers are listening
- assert rx.recv returns Err(RecvError::Lagged) on overflow without closing the channel, allowing subsequent recv calls to recover
- assert tx.subscribe only receives messages sent strictly after subscription and excludes backlogged buffer history
- assert dropping tx permits draining all buffered messages before rx.recv yields Err(RecvError::Closed)
- assert rx.resubscribe creates an independent receiver that observes only future messages from the moment of call
文件
- Cargo.lock
- Cargo.toml
- NOTES.md
- csx.json
- src/lib.rs