chenhg5/cc-connect · info

create request: %w

Error message

create request: %w

What it means

This error wraps a failure from http.NewRequestWithContext when building the POST to https://api.dingtalk.com/v1.0/card/instances/createAndDeliver (platform/dingtalk/card.go:121, createAICard). NewRequest only errors on an invalid method, malformed URL, or a nil/invalid body reader, so with the hardcoded POST and constant URL this is effectively unreachable and signals a programming/environmental invariant break.

Source

Thrown at platform/dingtalk/card.go:121

		payload["imRobotOpenDeliverModel"] = map[string]any{
			"spaceType": "IM_ROBOT",
			"robotCode": p.robotCode,
		}
	}

	bodyBytes, err := json.Marshal(payload)
	if err != nil {
		return nil, fmt.Errorf("marshal payload: %w", err)
	}

	reqCtx, cancel := context.WithTimeout(ctx, 30*time.Second)
	defer cancel()

	req, err := http.NewRequestWithContext(reqCtx, http.MethodPost,
		"https://api.dingtalk.com/v1.0/card/instances/createAndDeliver",
		bytes.NewReader(bodyBytes))
	if err != nil {
		return nil, fmt.Errorf("create request: %w", err)
	}

	req.Header.Set("Content-Type", "application/json")
	req.Header.Set("x-acs-dingtalk-access-token", token)

	slog.Debug("dingtalk: creating AI card", "outTrackId", outTrackId, "isGroup", isGroup)

	resp, err := p.httpClient.Do(req)
	if err != nil {
		return nil, fmt.Errorf("do request: %w", err)
	}
	defer resp.Body.Close()

	respBody, _ := io.ReadAll(resp.Body)

	slog.Debug("dingtalk: createAndDeliver response",
		"status", resp.StatusCode,
		"body", string(respBody))

View on GitHub (pinned to 4000b2338a)

Solutions

1. Verify the URL constant is unmodified and contains no spaces or invalid characters (url.Parse the value manually to see the exact error)
2. If the URL is now configurable, validate it with url.Parse and http.CanonicalHeaderKey-style checks before constructing the request
3. Confirm the HTTP method string is exactly "POST" with no whitespace
4. If untouched stock code, report as a bug including the wrapped error

Example fix

// before (interpolated, unvalidated URL)
url := cfg.CardURL // may be empty or malformed
// after
u, err := url.Parse(cfg.CardURL)
if err != nil || u.Scheme == "" || u.Host == "" { return nil, fmt.Errorf("invalid card url: %w", err) }

u, err := url.Parse("https://api.dingtalk.com/v1.0/card/instances/createAndDeliver")
if err != nil || u.Scheme != "https" || u.Host == "" {
	// fail fast before building request
}

card, err := p.CreateStreamingCard(ctx, rc)
if err != nil && strings.Contains(err.Error(), "create request:") {
	log.Printf("request construction invariant broken: %v", err)
}

When it happens

Trigger: http.NewRequestWithContext rejects the hardcoded method POST, the constant URL https://api.dingtalk.com/v1.0/card/instances/createAndDeliver, or the bytes.NewReader(bodyBytes) body; bodyBytes is always non-nil so this practically cannot fire in stock code.

Common situations: Source modifications that parameterize the URL with an invalid value (spaces, control characters, bad scheme) or change the HTTP method to an invalid token; corporate proxies never cause this (they fail later at do request).

Understand the failure class

Background: "Invalid URL" / "URL cannot be empty": fix the malformed or missing URL behind request-construction failures — this error's family across 50 libraries.

Related errors

• dingtalk: create proactive request: %w
• request usage endpoint: %w
• usage endpoint returned status %d: %s
• decode usage response: %w
• fetch presets: %w

AI-assisted analysis of chenhg5/cc-connect@4000b2338a (2026-09-06). Data as JSON: /api/errors/a561217f1254d1fe. Report an issue: GitHub.