94 	DoTokenCsvListHeaderL(aHeader, KErrHttpEncodeCacheControl);

    95 	THeaderFieldPartIter iter = aHeader.PartsL();

    96     iter.First();

    97 	if (iter.AtEnd())

    98 	   User::Leave(KErrHttpEncodeCacheControl);

    99 	

   100 	aHeader.BeginRawDataL();

   101 	do

   102 	    {

   103 	    const CHeaderFieldPart* part = iter();

   104 	    if(part == NULL)

   105 	        User::Leave(KErrHttpEncodeCacheControl);	    

   106 	    THTTPHdrVal ptVal = part->Value();

   107 	    if (ptVal.Type() != THTTPHdrVal::KStrFVal)

   108 	        User::Leave(KErrHttpEncodeCacheControl);

   109 	    const TDesC8& val = ptVal.StrF().DesC(); 

   110 	    if(val.Length() > 0)

   111 	        {

   112 	        aHeader.WriteRawDataL(val);

   113 	        }

   114 	    else

   115 	        {

   116 	        // Now we must have part as the strF value is KNulLDesC8

   117 	        THeaderFieldParamIter iter2 = part->Parameters();

   118 	        if(!iter2.AtEnd())

   119 	            {

   120 	            const CHeaderFieldParam* param = iter2();

   121 	            aHeader.WriteRawDataL(param->Name().DesC());

   122 	            aHeader.WriteRawDataL('=');

   123 	            THTTPHdrVal val2 = param->Value();

   124 	            if(val2.Type() == THTTPHdrVal::KTIntVal)

   125 	                {

   126 	                TBuf8<32> desc;

   127 	                desc.AppendNum(val2.Int());

   128 	                aHeader.WriteRawDataL(desc);

   129 	                }

   130 	            else if(val2.Type() == THTTPHdrVal::KStrFVal)

   131 	                {

   132 	                aHeader.WriteRawDataL(param->Name().DesC());

   133 	                }	            

   134 	            }

   135 	        }

   136 	    ++iter;

   137 	    if(!iter.AtEnd())

   138 	        aHeader.WriteRawDataL(KCommaSpaceSep());

   139 	    

   140 	    }while(!iter.AtEnd());

   141 	aHeader.CommitRawData();