fish2018/pansou · error

[ ] 访问首页失败

Error message

[%s] 访问首页失败: %w

What it means

Returned when p.doRequestWithRetry exhausts maxRequestRetries attempts to GET https://jsnoteclub.com/ without a usable response. The underlying transport error (DNS failure, TLS problem, timeout, connection refused) is wrapped via %w. All retry attempts already happened; this is the final failure.

Solutions

1. Run curl -v https://jsnoteclub.com/ from the same host to isolate DNS/TLS/network problems
2. Check the wrapped error for context deadline exceeded and consider increasing requestTimeout
3. Verify outbound internet access and proxy environment variables (HTTP_PROXY/HTTPS_PROXY)
4. Retry later — the upstream site may be temporarily down or rate-limiting your IP
5. Check whether setHTMLHeaders' User-Agent is being blocked and update headers

key, err := plugin.fetchDataKey(client)
if err != nil {
    if errors.Is(err, context.DeadlineExceeded) {
        // timeouts: increase requestTimeout or back off and retry
        return backoffAndRetry()
    }
    return fmt.Errorf("homepage unreachable, retry later: %w", err)
}

When it happens

Trigger: Every attempt of doRequestWithRetry fails: network unreachable, DNS resolution failure for jsnoteclub.com, TLS handshake error, or context deadline (requestTimeout) exceeded on each retry.

Common situations: The site is down or blocking the scraper's user agent/IP; corporate firewall or no internet access; DNS misconfiguration; requestTimeout set too low for slow networks; the site moved to a different domain (jsnoteclub.com is a small Chinese site whose uptime is not guaranteed).

Understand the failure class

Background: 'Something went wrong' / 'Request failed (500)' / 'HTTP error! status: 404' — what failed HTTP requests actually mean and how to find the real cause — this error's family across 28 libraries.

Related errors

• GET请求失败
• 重试 次后仍然失败
• [ ] 搜索请求失败
• request failed
• [ ] 搜索请求失败

AI-assisted analysis of fish2018/pansou@beaa561337 (2026-09-07). Data as JSON: /api/errors/6f41827bb8d3ce71. Report an issue: GitHub.

Appendix: source

Thrown at plugin/jsnoteclub/jsnoteclub.go:236

	postsCache.expire = time.Now().Add(postsCacheTTL)
	postsCache.key = dataKey

	return posts, nil
}

func (p *JsNoteClubPlugin) fetchDataKey(client *http.Client) (string, error) {
	ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
	defer cancel()

	req, err := http.NewRequestWithContext(ctx, http.MethodGet, "https://jsnoteclub.com/", nil)
	if err != nil {
		return "", fmt.Errorf("[%s] 创建首页请求失败: %w", p.Name(), err)
	}
	setHTMLHeaders(req, "https://jsnoteclub.com/")

	resp, err := p.doRequestWithRetry(req, client, maxRequestRetries)
	if err != nil {
		return "", fmt.Errorf("[%s] 访问首页失败: %w", p.Name(), err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return "", fmt.Errorf("[%s] 首页返回状态码: %d", p.Name(), resp.StatusCode)
	}

	doc, err := goquery.NewDocumentFromReader(resp.Body)
	if err != nil {
		return "", fmt.Errorf("[%s] 解析首页失败: %w", p.Name(), err)
	}

	var htmlBuilder strings.Builder
	doc.Find("script").Each(func(_ int, s *goquery.Selection) {
		if html, err := goquery.OuterHtml(s); err == nil {
			htmlBuilder.WriteString(html)
		}
	})

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