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fix(ssl): extract OCSP HTTP request loop into singleOCSPAttempt

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The previous code used defer resp.Body.Close() inside a for loop,
causing all response bodies to remain open until the function returned.
Extract the per-attempt logic into singleOCSPAttempt so each response
body is closed immediately after processing.
This commit is contained in:
xfy 2026-06-03 01:11:07 +08:00
parent f6c1ee8180
commit 3b84d62971
1 changed files with 33 additions and 29 deletions
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62
internal/ssl/ocsp.go
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@ -318,45 +318,49 @@ func (m *OCSPManager) fetchOCSP(cert, issuer *x509.Certificate) (*ocspResponse,
// - []byte: OCSP 响应数据
// - error: 请求失败时返回错误
func (m *OCSPManager) sendOCSPRequest(url string, req []byte) ([]byte, error) {
// 重试逻辑
var lastErr error
for i := 0; i < m.maxRetries; i++ {
httpReq, err := http.NewRequest("POST", url, bytes.NewReader(req))
if err != nil {
return nil, fmt.Errorf("failed to create HTTP request: %w", err)
}
httpReq.Header.Set("Content-Type", "application/ocsp-request")
resp, err := m.client.Do(httpReq)
body, err := m.singleOCSPAttempt(url, req)
if err != nil {
lastErr = err
if i < m.maxRetries-1 {
time.Sleep(time.Duration(i+1) * time.Second)
continue
}
return nil, fmt.Errorf("HTTP request failed: %w", err)
return nil, lastErr
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
if i < m.maxRetries-1 {
time.Sleep(time.Duration(i+1) * time.Second)
continue
}
return nil, fmt.Errorf("OCSP server returned status %d", resp.StatusCode)
}
body, err := io.ReadAll(io.LimitReader(resp.Body, 1024*1024)) // Limit to 1MB
if err != nil {
if i < m.maxRetries-1 {
time.Sleep(time.Duration(i+1) * time.Second)
continue
}
return nil, fmt.Errorf("failed to read response body: %w", err)
}
return body, nil
}
return nil, lastErr
}
return nil, errors.New("max retries exceeded")
// singleOCSPAttempt 发送单次 OCSP HTTP 请求。
//
// 将单次请求逻辑提取为独立函数，确保 resp.Body 在每次调用结束时
// 通过 defer 正确关闭，避免在重试循环中累积未关闭的 response body。
func (m *OCSPManager) singleOCSPAttempt(url string, req []byte) ([]byte, error) {
httpReq, err := http.NewRequest("POST", url, bytes.NewReader(req))
if err != nil {
return nil, fmt.Errorf("failed to create HTTP request: %w", err)
}
httpReq.Header.Set("Content-Type", "application/ocsp-request")
resp, err := m.client.Do(httpReq)
if err != nil {
return nil, fmt.Errorf("HTTP request failed: %w", err)
}
defer func() { _ = resp.Body.Close() }()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("OCSP server returned status %d", resp.StatusCode)
}
body, err := io.ReadAll(io.LimitReader(resp.Body, 1024*1024))
if err != nil {
return nil, fmt.Errorf("failed to read response body: %w", err)
}
return body, nil
}
// GetOCSPResponse 返回证书的 OCSP 响应。