go network_error ai_generated true

rpc 错误：code = Canceled，desc = 上下文已取消

rpc error: code = Canceled desc = context canceled

ID: go/grpc-canceled-by-client

其他格式: JSON · Markdown 中文 · English
80%修复率
87%置信度
0证据数
2024-03-27首次发现

版本兼容性

版本状态引入弃用备注
google.golang.org/grpc 1.48+ active — — —

根因分析

客户端在服务端完成前取消了 RPC（通过 context cancel、HTTP/2 RST_STREAM 或父上下文超时）。

English

The client canceled the RPC (via context cancel, HTTP/2 RST_STREAM, or parent context timeout) before the server finished.

generic

解决方案

  1. 90% 成功率 
    Check ctx.Err() in the server handler and exit early:
select {
case <-ctx.Done():
    return nil, status.FromContextError(ctx.Err()).Err()
default:
}
// continue processing
  2. 85% 成功率 
    Distinguish client cancel from server-side timeout by inspecting the parent context; treat codes.Canceled as INFO in logs and metrics.

无效尝试

常见但无效的做法:

  1. 80% 失败

    If the caller intentionally canceled (e.g., user closed the page), retrying wastes resources.

  2. 85% 失败

    Canceled is a normal client behavior; alerting creates noise.