> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# HCHttpCallRequestGetNumHeaders

> HCHttpCallRequestGetNumHeaders

# HCHttpCallRequestGetNumHeaders

取得 HTTP 呼叫中的要求標頭數目。

## 語法

```cpp theme={null}
HRESULT HCHttpCallRequestGetNumHeaders(  
         HCCallHandle call,  
         uint32_t* numHeaders  
)  
```

### 參數

*call*   \_In\_\
類型：HCCallHandle

HTTP 呼叫的控制代碼。

*numHeaders*   \_Out\_\
類型：uint32\_t\*

HTTP 呼叫中的要求標頭數目。

### 傳回值

類型：HRESULT

此 API 作業的結果代碼。可能的值為 S\_OK、E\_INVALIDARG 或 E\_FAIL。

## 需求

**標頭：** httpProvider.h

**程式庫：** libHttpClient.GDK.lib

## 另請參閱

[httpProvider](/zh-TW/reference/live/httpclient/httpprovider/httpprovider_members)


## Related topics

- [HCHttpCallRequestGetHeaderAtIndex](/zh-TW/reference/live/httpclient/httpprovider/functions/hchttpcallrequestgetheaderatindex.md)
- [XblHttpCallGetNumHeaders](/zh-TW/reference/live/xsapi-c/http_call_c/functions/xblhttpcallgetnumheaders.md)
- [HCHttpCallResponseGetNumHeaders](/zh-TW/reference/live/httpclient/httpclient/functions/hchttpcallresponsegetnumheaders.md)
- [XblHttpCallGetHeaderAtIndex](/zh-TW/reference/live/xsapi-c/http_call_c/functions/xblhttpcallgetheaderatindex.md)
- [HCHttpCallResponseGetHeaderAtIndex](/zh-TW/reference/live/httpclient/httpclient/functions/hchttpcallresponsegetheaderatindex.md)