chenhg5/cc-connect · error

googlechat: build update request: %w

Error message

googlechat: build update request: %w

What it means

This error wraps a failure from http.NewRequestWithContext while building the PATCH request that updates a streaming-preview message via spaces.messages.patch. It is thrown in UpdateMessage after the handle type check succeeds and buildUpdateRequest returned a valid URL and body. Since the URL comes from chatAPIBase + a validated message name and the body is a valid byte reader, this branch is defensive and rarely fires in production.

Source

Thrown at platform/googlechat/streaming.go:89

	}
	return u, b, nil
}

// UpdateMessage patches the preview message text in place. The engine passes the
// handle returned by SendPreviewStart (not the reply context). Implements
// core.MessageUpdater.
func (p *Platform) UpdateMessage(ctx context.Context, handle any, content string) error {
	h, ok := handle.(*previewHandle)
	if !ok {
		return fmt.Errorf("googlechat: invalid preview handle type %T", handle)
	}
	url, body, err := buildUpdateRequest(h.name, content)
	if err != nil {
		return err
	}
	req, err := http.NewRequestWithContext(ctx, http.MethodPatch, url, bytes.NewReader(body))
	if err != nil {
		return fmt.Errorf("googlechat: build update request: %w", err)
	}
	req.Header.Set("Content-Type", "application/json")
	resp, err := p.doRequest(req)
	if err != nil {
		return err
	}
	if _, err := io.Copy(io.Discard, resp.Body); err != nil {
		_ = resp.Body.Close()
		return fmt.Errorf("googlechat: drain update response body: %w", err)
	}
	if err := resp.Body.Close(); err != nil {
		return fmt.Errorf("googlechat: close update response body: %w", err)
	}
	return nil
}

var (
	_ core.MessageUpdater = (*Platform)(nil)

View on GitHub (pinned to 4000b2338a)

Solutions

1. Verify chatAPIBase is a clean, valid URL prefix (https://chat.googleapis.com/v1/)
2. Check the message name in the previewHandle for invalid URL characters
3. Confirm the context passed to UpdateMessage is a healthy, non-cancelled context
4. Log the constructed URL (with the message name) to spot malformed segments

Example fix

// before
u := chatAPIBase + msgName + "?updateMask=text"
// after: validate segments before building the URL
if strings.ContainsAny(msgName, " \t\r\n") {
    return "", nil, fmt.Errorf("googlechat: invalid message name %q", msgName)
}
u := chatAPIBase + msgName + "?updateMask=text"

// validate config before starting the platform
if _, err := url.Parse(chatAPIBase); err != nil {
    return fmt.Errorf("invalid googlechat chatAPIBase %q: %w", chatAPIBase, err)
}

if err := p.UpdateMessage(ctx, handle, text); err != nil {
    if strings.Contains(err.Error(), "build update request") {
        slog.Warn("googlechat: failed to build PATCH request; check chatAPIBase and message name", "error", err)
    }
    return err
}

When it happens

Trigger: http.NewRequestWithContext(ctx, http.MethodPatch, url, bytes.NewReader(body)) returns an error inside UpdateMessage — practically only when the URL fails to parse (e.g. chatAPIBase misconfigured with invalid characters/spaces) or the context is already invalid in a way the constructor rejects.

Common situations: A misconfigured API base URL containing characters that make the URL unparseable; a malformed msgName in the previewHandle (e.g. containing spaces or control characters) corrupting the final URL.

Understand the failure class

Background: "Invalid URL" errors: why new URL(), URI.parse, and reqwest::Url reject your string — missing scheme, whitespace, and bad path format — this error's family across 39 libraries.

Related errors

• googlechat: build request: %w
• googlechat: attachment message: build request: %w
• googlechat: build request: %w
• reasonix: create request: %w
• create request: %w

AI-assisted analysis of chenhg5/cc-connect@4000b2338a (2026-09-06). Data as JSON: /api/errors/fb04f4add23efc50. Report an issue: GitHub.