how to write the COOKIE data in the HTTP header

Code:
------------------------- read and save cookie from HTTP response HEADER ------------------

RHTTPHeaders aCurrentHeader;
aCurrentHeader = aResponse.GetHeaderCollection();

// 2. ------- set the RStringF string to get header field data --//

RStringF setcookie = iSession.StringPool().StringF(HTTP::ESetCookie,
RHTTPSession::GetTable());

// 3. ------- get the cookie raw data ---------------------------//

TInt ifcookie = aCurrentHeader.GetField(setcookie,0,iCookieData); //( THTTPHdrVal iCookieData;)

------------------------append the saved cookie data into HTTP request HEADER ------------------

RHTTPHeaders hdr = iTransaction.Request().GetHeaderCollection();
SetHeaderL(hdr, HTTP::EUserAgent, KUserAgent);
SetHeaderL(hdr, HTTP::EAccept, KAccept);
// ----- get the cookie if have cookie ---2005-06-15------------ //
if(iSetCookie)
{
hdr.SetFieldL(iSession.StringPool().StringF(HTTP::ECookie,
RHTTPSession::GetTable()), iCookieData);
}