---
title: PendingFragmentContent
summary: Content that can be returned from a fragment request dispatcher. This can either be a pending request, a response, or an empty value to indicate that no content is available.
url: https://www.fastly.com/documentation/reference/compute/sdks/cpp/fastly/esi/type.PendingFragmentContent/
---

**Kind:** Type alias  
**Module:** [esi](https://www.fastly.com/documentation/reference/compute/sdks/cpp/fastly/esi/)  
**Package:** compute-sdk-cpp 0.7.0  
**Source:** https://github.com/fastly/compute-sdk-cpp/blob/ff911e47be2f319e83a9cde960d2c3c5db534280/include/fastly/esi.h#L39

```cpp
using fastly::esi::PendingFragmentContent = typedef std::variant<http::request::PendingRequest, http::Response, std::monostate>
```

Alias for `std::variant<http::request::PendingRequest, http::Response, std::monostate>`.

Content that can be returned from a fragment request dispatcher. This can either be a pending request, a response, or an empty value to indicate that no content is available.