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getResponseHeader Method (IXMLHTTPRequest)

Retrieves the value of an HTTP header from the response body.

strValue = oXMLHttpRequest.getResponseHeader(bstrHeader);

Parameters

bstrHeader

A string containing the case-insensitive header name.

Return Value

A string. Contains the resulting header information.

Example

var xmlhttp = new ActiveXObject("MSXML2.XMLHTTP.6.0");
xmlhttp.open("GET", "http://localhost/sample.xml", false);
xmlhttp.send();
WScript.Echo(xmlhttp.getResponseHeader("Server"));

Output

Returns the value of the Server field in the HTTP header, which indicates the current version of the Web server running locally. In this case, the value is "Microsoft-IIS/5.1" for Internet Information Services (IIS) version 5.1, which is the version provided if the local computer is running under Microsoft Windows XP.

HRESULT getResponseHeader(BSTR bstrHeader, BSTR* pbstrValue);

Parameters

bstrHeader [in]

A case-insensitive header name.

pbstrValue [out, retval]

The resulting header information.

Return Values

S_OK

The value returned if successful.

Example

HRESULT hr;
BSTR bstrValue = NULL;
IXMLHttpRequest *pIXMLHttpRequest = NULL;

try
{
   // Create XMLHttpRequest object and initialize pIXMLHttpRequest.
   hr = pIXMLHttpRequest->getResponseHeader(_T("Server"), &bstrValue);
   if(SUCCEEDED(hr))
   {
      ::MessageBox(NULL, m_bstrValue, _T("Response Header-Server"), MB_OK);   
      ::SysFreeString(bstrValue);
      bstrValue = NULL;
   }   
}
catch(...)
{
   if(bstrValue)
      ::SysFreeString(bstrValue);
   DisplayErrorToUser();
}
// Release pIXMLHttpRequest when finished with it.

The results of this method are valid only after the send method has been successfully completed. The line, xmlhttp.getResponseHeader("Content-Type");, returns the string "text/xml", assuming the server set "text/xml" as the content type. The full list of header variables you can query can be accessed from the getAllResponseHeaders method.

Implemented in: MSXML 3.0 and MSXML 6.0

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