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Summary of ChangesHello @YangSen-qn, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! 此拉取请求主要将项目版本升级到 Highlights
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storagev2/retrier/retrier.go
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| } | ||
| return DontRetry | ||
| } | ||
| } No newline at end of file |
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文件末尾缺少换行符。根据 Go 的编码惯例以及为了兼容一些 POSIX 工具，建议在文件末尾添加一个换行符。
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| } else if os.IsTimeout(unwrapedErr) { | ||
| return RetryRequest | ||
| } else if unwrapedErr == io.EOF { | ||
| return RetryRequest |
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Semantic Concern: Retrying io.EOF May Be Incorrect
Treating io.EOF as retryable contradicts Go's standard semantics. Per Go docs, io.EOF signals a graceful end of input, not an error. Normal EOFs (server closes connection after complete response) will trigger unnecessary retries.
Issues:
- Retry storms: Legitimate EOFs will retry 3x per host across multiple hosts (6-12+ total attempts)
- Performance: Adds 150-300ms latency overhead per request
- Resource waste: Large uploads re-buffer on each retry
Suggestion: Consider using io.ErrUnexpectedEOF instead, or add context checking to only retry EOF during request phase (not after response headers received). If EOF retry is intentional for specific scenarios, please add a code comment explaining why.
Note: The code already handles "unexpected EOF" via string matching at line 183.
| } else if os.IsTimeout(unwrapedErr) { | ||
| return RetryRequest | ||
| } else if unwrapedErr == io.EOF { | ||
| return RetryRequest |
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Security: Potential DoS Amplification
Malicious servers can exploit this by repeatedly sending premature EOFs, forcing clients to retry up to 3 retries × N hosts times per request. For large file uploads, this amplifies bandwidth consumption and memory usage.
Mitigations needed:
- Add request body size limits for EOF retries (e.g., skip retry for requests >10MB)
- Implement exponential backoff for EOF retries instead of fixed 50-100ms delay
- Consider rate limiting or circuit breaker per endpoint
Current safeguards (context deadlines, retry limits) help but don't fully prevent resource exhaustion.
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CHANGELOG Documentation Issues The CHANGELOG is missing the main code change and contains inaccuracies: Missing: The io.EOF retry fix (commit d7ec7dc) - the actual functional change in this release Please update CHANGELOG to accurately reflect all 5 commits in this release. |
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