curl_easy_perform(_curl)在手机上阻塞问题

Question

cocos2d-x3.3使用lua热更新时遇到问题，在电脑VS中运行下载资源是正常的，编译android apk后在手机上运行下载没反应，断点调试在执行到上面这段代码时卡住了，试了网上设置超时等方法都是一样，这是具体代码：
CURLcode res;
curl_easy_setopt(_curl, CURLOPT_URL, _packageUrl.c_str());
curl_easy_setopt(_curl, CURLOPT_WRITEFUNCTION, downLoadPackage);
curl_easy_setopt(_curl, CURLOPT_WRITEDATA, fp);
curl_easy_setopt(_curl, CURLOPT_NOPROGRESS, false);
curl_easy_setopt(_curl, CURLOPT_PROGRESSFUNCTION, assetsManagerProgressFunc);
curl_easy_setopt(_curl, CURLOPT_PROGRESSDATA, this);
curl_easy_setopt(_curl, CURLOPT_NOSIGNAL, 1L);
curl_easy_setopt(_curl, CURLOPT_LOW_SPEED_LIMIT, LOW_SPEED_LIMIT);
curl_easy_setopt(_curl, CURLOPT_LOW_SPEED_TIME, LOW_SPEED_TIME);
curl_easy_setopt(_curl, CURLOPT_FOLLOWLOCATION, 1 );
res = curl_easy_perform(_curl);

第一次用lua热更新，求大神指点！感激不尽！

Answer 1

s;
curl_easy_setopt(_curl, CURLOPT_URL, _packageUrl.c_str());
curl_easy_setopt(_curl, CURLOPT_WRITEFUNCTION, downLoadPackage);
curl_easy_setopt(_curl, CURLOPT_WRITEDATA, fp);
curl_easy_setopt(_curl, CURLOPT_NOPROGRESS, false);
curl_easy_setopt(_curl, CURLOPT_PROGRESSFUNCTION, assetsManagerProgressFunc);
curl_easy_setopt(_curl, CURLOPT_PROGRESSDATA, this);
curl_easy_setopt(_curl, CURLOPT_NOSIGNAL, 1L);
curl_easy_setopt(_curl, CURLOPT_LOW_SPEED_LIMIT, LOW_SPEED_LIMIT);
curl_easy_setopt(_curl, CURLOPT_LOW_SPEED_TIME, LOW_SPEED_TIME);
curl_easy_setopt(_curl, CURLOPT_FOLLOWLOCATION, 1 );
res = curl_easy_perform(_curl);