chenhg5/cc-connect · error

write: %w

Error message

write: %w

What it means

Raised when io.Copy fails writing the downloaded release body into the temp file — typically disk full, temp dir unwritable, or the connection dropped mid-transfer. The partially written temp file is closed and removed before returning.

Source

Thrown at cmd/cc-connect/update.go:420

	if err != nil {
		return "", fmt.Errorf("download: %w", err)
	}
	defer resp.Body.Close()

	if resp.StatusCode != 200 {
		return "", fmt.Errorf("download returned HTTP %d", resp.StatusCode)
	}

	tmp, err := os.CreateTemp("", "cc-connect-update-*")
	if err != nil {
		return "", err
	}

	size, err := io.Copy(tmp, resp.Body)
	if err != nil {
		tmp.Close()
		os.Remove(tmp.Name())
		return "", fmt.Errorf("write: %w", err)
	}
	tmp.Close()

	fmt.Printf("Downloaded %.1f MB\n", float64(size)/1024/1024)
	return tmp.Name(), nil
}

func replaceExecutable(target, src string) error {
	if err := os.Chmod(src, 0o755); err != nil {
		return fmt.Errorf("chmod: %w", err)
	}

	// On Windows, rename over a running exe is not possible directly.
	// Move old binary aside, then move new one in.
	backup := target + ".old"
	os.Remove(backup)

	if err := os.Rename(target, backup); err != nil {

View on GitHub (pinned to 4000b2338a)

Solutions

1. Retry the update — interrupted downloads are cleaned up automatically
2. Stabilize network connectivity for large binary downloads
3. Disable bandwidth-throttling proxies if present

When it happens

Trigger: Thrown at cmd/cc-connect/update.go:420 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of chenhg5/cc-connect@4000b2338a (2026-09-06). Data as JSON: /api/errors/b584748a4a2ec19a. Report an issue: GitHub.