能否在http 表单上传中对 Qiniu_callex 加入进度回调

[PeterMStudio]

#if LIBCURL_VERSION_NUM >= 0x072000 curl_easy_setopt(curl, CURLOPT_XFERINFOFUNCTION, xferinfo); curl_easy_setopt(curl, CURLOPT_XFERINFODATA, &prog); #else curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, older_progress); curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &prog); #endif