获取HTTP头协议中状态值和数据大小

来源：互联网发布：即影即有软件编辑：程序博客网时间：2024/05/21 22:48

得到HTTP头协议后，获取状态值和返回数据的大小。

void CClientEngine::MHFRunL(RHTTPTransaction aTransaction,
        const THTTPEvent& aEvent)
    {
    switch (aEvent.iStatus)
        {
        case THTTPEvent::EGotResponseHeaders:
            {
            // Get HTTP status code from header (e.g. 200)
            RHTTPResponse resp = aTransaction.Response();
            TInt status = resp.StatusCode();

            // Get status text (e.g. "OK")
            TBuf<KStatustextBufferSize> statusText;
            statusText.Copy(resp.StatusText().DesC());

            //从消息头中获取文件大小
            RHTTPHeaders headers = resp.GetHeaderCollection();

            THTTPHdrVal aHeaderValue;
            TRAPD(Err,
                    RStringPool string_pool = iSession.StringPool ();
                    RStringF contLength = string_pool.OpenFStringL (_L8("Content-Length") );
                    headers.GetField (contLength, 0, aHeaderValue );
                    contLength.Close ();
            );

            TInt nTotalSize = aHeaderValue.Int();

            TBuf<32> bTotalSize;
            bTotalSize.AppendNum(nTotalSize);
            break;
            }
        }
    }