What causes "获取Cookie失败: %w" in fish2018/pansou?

Check the underlying error printed by the [QQPD] log line to distinguish network vs parsing failure

fish2018/pansou · error

获取Cookie失败

Error message

获取Cookie失败: %w

What it means

checkQRLoginStatus (plugin/qqpd/qqpd.go:1808) wraps failures from p.fetchFullCookie(uin, ptsigx, setCookieStr) as '获取Cookie失败: %w'. After QR login succeeds and ptsigx/uin are extracted, the plugin exchanges them at QQ's check_sig endpoint for the full cookie set; any network error or non-success status there surfaces as this error.

Solutions

Check the underlying error printed by the [QQPD] log line to distinguish network vs parsing failure
Retry the check_login poll promptly after QR scan — ptsigx is short-lived
Verify outbound connectivity to QQ's check_sig domain (ssl.ptlogin2.qq.com)
Re-issue a fresh QR code if the sign exchange keeps failing

Example fix

// before
cookie, err := p.fetchFullCookie(uin, ptsigx, setCookieStr)
if err != nil {
    return nil, fmt.Errorf("获取Cookie失败: %w", err)
}
// after
cookie, err := p.fetchFullCookie(uin, ptsigx, setCookieStr)
if err != nil {
    return nil, fmt.Errorf("获取Cookie失败 (uin=%s): %w", p.maskQQ(uin), err)
}

Defensive patterns

Strategy: retry

Try / catch

user, err := p.checkQRLoginStatus(qrsig)
if err != nil {
    if strings.Contains(err.Error(), "获取Cookie失败") {
        // ptsigx likely expired or check_sig request failed; restart QR flow
        return p.restartQRFlow()
    }
    return err
}

Prevention

Call check_login immediately after the user scans to avoid ptsigx expiry
Ensure stable connectivity to ssl.ptlogin2.qq.com
Apply the same cookie jar across ptqrlogin and check_sig requests
Add a fallback that re-issues a QR code after N cookie-exchange failures

When it happens

Trigger: handleCheckLogin -> checkQRLoginStatus: the ptqrlogin response succeeded and ptsigx/uin were parsed, but the follow-up fetchFullCookie HTTP request fails (transport error, non-2xx, or missing expected cookies in the response).

Common situations: ptsigx expired because the check_sig request happened too late, QQ rate-limiting or blocking the client IP, network outage, or QQ changing the check_sig response shape so the plugin can't assemble the cookie.

Understand the failure class

Background: "API request failed": what wrapped HTTP errors from external APIs mean and how to find the real cause — this error's family across 29 libraries.

Related errors

AI-assisted analysis of fish2018/pansou@beaa561337 (2026-09-07). Data as JSON: /api/errors/c1ab290bb1d4b584. Report an issue: GitHub.

Appendix: source

Thrown at plugin/qqpd/qqpd.go:1808

		return &LoginResult{Status: "expired"}, nil
	}

	if strings.Contains(bodyStr, "登录成功") {
		// 提取ptsigx和uin
		ptsigx, uin, err := p.extractLoginInfo(bodyStr)
		if err != nil {
			fmt.Printf("[QQPD] 提取登录信息失败: %v, 响应: %s\n", err, bodyStr)
			return nil, fmt.Errorf("提取登录信息失败: %w", err)
		}

		// 获取完整Cookie（传递ptqrlogin返回的所有Set-Cookie）
		allSetCookies := resp.Header.Values("Set-Cookie")
		setCookieStr := strings.Join(allSetCookies, "; ")

		cookie, err := p.fetchFullCookie(uin, ptsigx, setCookieStr)
		if err != nil {
			fmt.Printf("[QQPD] 获取Cookie失败: %v\n", err)
			return nil, fmt.Errorf("获取Cookie失败: %w", err)
		}

		// 生成脱敏QQ号
		qqMasked := p.maskQQ(uin)

		if DebugLog {
			fmt.Printf("[QQPD] 登录成功！QQ: %s, Cookie长度: %d, 包含keys: ", qqMasked, len(cookie))
			cookies := parseCookieString(cookie)
			keys := make([]string, 0, len(cookies))
			for k := range cookies {
				keys = append(keys, k)
			}
			fmt.Printf("%v\n", keys)
		}

		return &LoginResult{
			Status:   "success",
			Cookie:   cookie,

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