glanceapp/glance · error

creating request for app access token: %v

Error message

creating request for app access token: %v

What it means

http.NewRequest failed while constructing the POST to https://www.reddit.com/api/v1/access_token. The URL is a constant and valid, so with a non-nil body reader this error is effectively unreachable in practice; seeing it indicates memory corruption or an exotic runtime condition rather than a config problem.

Source

Thrown at internal/glance/widget-reddit.go:301

				forumPost.TargetUrl = widget.parseCustomCommentsURL(
					post.ParentList[0].Subreddit,
					post.ParentList[0].Id,
					post.ParentList[0].Permalink,
				)
			}
		}

		posts = append(posts, forumPost)
	}

	return posts, nil
}

func (widget *redditWidget) fetchNewAppAccessToken() error {
	body := strings.NewReader("grant_type=client_credentials")
	req, err := http.NewRequest("POST", "https://www.reddit.com/api/v1/access_token", body)
	if err != nil {
		return fmt.Errorf("creating request for app access token: %v", err)
	}

	app := &widget.AppAuth
	req.SetBasicAuth(app.ID, app.Secret)
	req.Header.Add("User-Agent", app.Name+"/1.0")
	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")

	type tokenResponse struct {
		AccessToken string `json:"access_token"`
		ExpiresIn   int    `json:"expires_in"`
	}

	client := ternary(widget.Proxy.client != nil, widget.Proxy.client, defaultHTTPClient)
	response, err := decodeJsonFromRequest[tokenResponse](client, req)
	if err != nil {
		return err
	}

View on GitHub (pinned to 91324e8de7)

Solutions

1. Treat as a bug — report it upstream with the wrapped error text
2. Verify the glance binary is not corrupted (rebuild/re-pull the image)

if err := widget.fetchNewAppAccessToken(); err != nil {
    slog.Error("unexpected reddit token request failure", "error", err)
    return err // report upstream — this path should be unreachable
}

When it happens

Trigger: Practically none — the fixed URL always parses and strings.NewReader never fails. Would only occur if the hardcoded URL were modified to something invalid.

Common situations: Not seen in practice; mentioned only for completeness of the error surface.

Related errors

• invalid include match: %v
• subreddit is required
• no `{REQUEST-URL}` placeholder specified
• application name, client ID and client secret are required
• could not solve reddit challenge

AI-assisted analysis of glanceapp/glance@91324e8de7 (2026-08-15). Data as JSON: /api/errors/0e81876ba09dc3cc. Report an issue: GitHub.