新手第一问：IWeb下载文件

[z18580746528]

不知道什么原因，只能重复下载6次，然后就失败，代码如下：
2秒的计时器里
static void P_Timer(firstapp* pMe)
{
ISHELL_CreateInstance(pMe->a.m_pIShell,AEECLSID_WEB,(void **)&pMe->pIWeb);
CALLBACK_Init(&pMe->cb, WebAction_GotResp, pMe);
IWEB_GetResponse(pMe->pIWeb,(pMe->pIWeb,&pMe->piWResp,&pMe->cb,"http://127.0.0.1/web/1.txt",WEBOPT_END));
ISHELL_SetTimer(pMe->a.m_pIShell,2000,(PFNNOTIFY)P_Timer,pMe);
}

static void WebAction_GotResp(void *p)
{
firstapp* pMe = (firstapp*)p;
WebRespInfo *pwri;

//6次后pwri.nCode值是-1289，为什么呀，谁知道，帮个忙，拜谢！
pwri = IWEBRESP_GetInfo(pMe->piWResp);

if ((ISource *)0 != pwri->pisMessage) {
ISourceUtil *pisu;
ISHELL_CreateInstance(pMe->a.m_pIShell,AEECLSID_SOURCEUTIL,(void **)&pisu);
if ((ISourceUtil *)0 != pisu) {
ISOURCEUTIL_GetLineFromSource(pisu, pwri->pisMessage, 1100, &pMe->piGetLine);
ISOURCEUTIL_Release(pisu);
}
}
CALLBACK_Cancel(&pMe->cb);

IWEBRESP_Release(pMe->piWResp);
pMe->piWResp = NULL;
IWEB_Release(pMe->pIWeb);
pMe->pIWeb = NULL;

}
//6次后pwri.nCode值是-1289，为什么呀，谁知道，帮个忙，拜谢！