shadow1ng/fscan · error

webscan_proxy_url_parse_failed

webscan_proxy_url_parse_failed

Error message

webscan_proxy_url_parse_failed: %w

What it means

Guard in configureHTTPProxy: the scheme passed validation but url.Parse rejected the proxy URL (malformed host, bad escapes, bad credentials). The transport cannot be configured with an unparseable proxy address.

Solutions

1. Correct syntax errors in the proxy URL (port, userinfo escaping, IPv6 brackets)
2. URL-encode special characters in the proxy password
3. Test the URL with a standard HTTP client

When it happens

Trigger: Thrown at webscan/lib/Client.go:124 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of shadow1ng/fscan@95cc12e753 (2026-09-06). Data as JSON: /api/errors/5cf3547c62a3d650. Report an issue: GitHub.

Appendix: source

Thrown at webscan/lib/Client.go:124

	if httpProxyURL != "" {
		// 处理快捷代理配置
		if httpProxyURL == ProxyShortcutBurp {
			httpProxyURL = ProxyBurpURL
		} else if httpProxyURL == ProxyShortcutSocks5 {
			httpProxyURL = ProxySocks5URL
		} else if !strings.Contains(httpProxyURL, "://") {
			httpProxyURL = normalizeHTTPProxyURL(httpProxyURL)
		}

		// 验证代理类型
		if !strings.HasPrefix(httpProxyURL, "socks5://") && !strings.HasPrefix(httpProxyURL, "http://") && !strings.HasPrefix(httpProxyURL, "https://") {
			return fmt.Errorf("%s: %s", i18n.GetText("webscan_unsupported_proxy_type"), httpProxyURL)
		}

		// 解析代理URL
		parsedURL, err := url.Parse(httpProxyURL)
		if err != nil {
			return fmt.Errorf("%s: %w", i18n.GetText("webscan_proxy_url_parse_failed"), err)
		}
		tr.Proxy = http.ProxyURL(parsedURL)
		return nil
	}

	// 无代理配置
	return nil
}

func normalizeHTTPProxyURL(proxyURL string) string {
	if _, err := strconv.Atoi(proxyURL); err == nil {
		return "http://127.0.0.1:" + proxyURL
	}
	return "http://" + proxyURL
}

// InitHTTPClient 创建HTTP客户端
func InitHTTPClient(ThreadsNum int, DownProxy string, Timeout time.Duration, maxRedirects int, networkConfig *common.NetworkConfig) error {

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