UpnpRegisterRootDevice函数返回-104

Question

void *Cookie = NULL;
UpnpDevice_Handle DeviceHandle = -1;
char desc_doc_url[MAX_BUF_LEN] = {0};
snprintf(desc_doc_url, MAX_BUF_LEN, "http://%s:%d/%s", IP, PORT, "tvdevicedesc.xml");

iRet = UpnpRegisterRootDevice(desc_doc_url, TvDeviceCallbackEventHandler, Cookie, &DeviceHandle);
if(iRet != UPNP_E_SUCCESS)
{
    printf("Error register root device %d\n", iRet);
    UpnpFinish();
    return iRet;
}

我也不清楚是我的参数传的有问题，还是有什么没初始化，一直返回-104，请各位大神指点

Answer 1

http://manual.freeshell.org/libupnp-1.6.18/html/upnp/UpnpRegisterRootDevice.html
先查看对应的错误信息。