projectdiscovery/nuclei · error

could not open proxy file: %w

Error message

could not open proxy file: %w

What it means

Error "could not open proxy file: %w" thrown in projectdiscovery/nuclei.

Source

Thrown at internal/runner/proxy.go:30

	fileutil "github.com/projectdiscovery/utils/file"
	proxyutils "github.com/projectdiscovery/utils/proxy"
)

const (
	HTTP_PROXY_ENV = "HTTP_PROXY"
)

// loadProxyServers load list of proxy servers from file or comma separated
func loadProxyServers(options *types.Options) error {
	if len(options.Proxy) == 0 {
		return nil
	}
	proxyList := []string{}
	for _, p := range options.Proxy {
		if fileutil.FileExists(p) {
			file, err := os.Open(p)
			if err != nil {
				return fmt.Errorf("could not open proxy file: %w", err)
			}
			defer func() {
				_ = file.Close()
			}()
			scanner := bufio.NewScanner(file)
			for scanner.Scan() {
				proxy := scanner.Text()
				if strings.TrimSpace(proxy) == "" {
					continue
				}
				proxyList = append(proxyList, proxy)
			}
		} else {
			proxyList = append(proxyList, p)
		}
	}
	aliveProxy, err := proxyutils.GetAnyAliveProxy(options.Timeout, proxyList...)
	if err != nil {

View on GitHub (pinned to 265b3a3dec)

When it happens

Trigger: Thrown at internal/runner/proxy.go:30 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of projectdiscovery/nuclei@265b3a3dec (2026-08-15). Data as JSON: /api/errors/71de0190d7f12175. Report an issue: GitHub.