curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1); curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0); //设置进度回调函数 curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, ProgressCallback); //curl_easy_getinfo(curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &lFileSize); //curl_easy_setopt(curl, CURL...
} DWORD WINAPI DownloadThread(LPVOID lpParam) {//初始化curl,这个是必须的CURL* curl =curl_easy_init(); curl_easy_setopt(curl, CURLOPT_URL,"http://android.shoujids.com/software/download?id=154103");//设置接收数据的回调curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, DownloadCallback);//curl_...
5、CURLINFO_CONTENT_TYPE 该选项获得 HTTP 中从服务器端收到的头部中的 Content-Type 信息。 6、CURLINFO_CONTENT_LENGTH_DOWNLOAD 获取头部content-length,要求第 3 个参数是个 double 型的指针。如果文件大小无法获取,那么函数返回值为 -1 。 使用上面的几个函数,我们就可以完成一个简单的HTTP下载程序: CURL ...
CURLINFO_CONTENT_LENGTH_DOWNLOAD Pass a pointer to a double to receive the content-length of the download. This is the value read from the Content-Length: field. Since 7.19.4, this returns -1 if the size isn't known. CURLINFO_CONTENT_LENGTH_UPLOAD Pass a pointer to a double to receive...
5、curl_easy_setopt 6、curl_easy_perform 7、curl_easy_getinfo 8、curl_version() 9、curl_getdate 10、curl_mime_init 11、curl_formadd 12、curl_slist_append 13、curl_slist_free_all 14、curl_easy_escape 15、curl_easy_unescape libcurl是一个功能强大且广泛使用的开源网络传输库,提供了Easy inte...
curl_easy_getinfo(m_pUrlHandle, CURLINFO_CONTENT_LENGTH_DOWNLOAD, &dSize); }else{ dSize = 0.0f; } curl_easy_cleanup(m_pUrlHandle); m_pUrlHandle = NULL; 改动就是去掉curl_easy_setopt(m_pUrlHandle, CURLOPT_HEADER, 1); 默认CURLOPT_NOPROGRESS为开启的 ...
code=curl_easy_getinfo(curl,CURLINFO_RESPONSE_CODE,&retCode); if (code==CURLE_OK && retCode==200) { double length=0; code=curl_easy_getinfo(curl,CURLINFO_CONTENT_LENGTH_DOWNLOAD,&length); } else { curl_easy_cleanup(curl); return false; ...
curl_easy_perform(curl); } 3、实例 // Get the file size and name on the server size_t header_callback(void *buffer, size_t size, size_t nitems, void *userdata) { string sHeaderData = (char*)buffer; string sKey = "Content-Disposition"; ...
info 取值如下：CURLINFO_EFFECTIVE_METHOD 上次使⽤的 HTTP ⽅法。见 CURLINFO_EFFECTIVE_URL 上次使⽤的⽹址。见 CURLINFO_RESPONSE_CODE 最后收到的响应代码。见 CURLINFO_REFERER 引⽤标头。见 CURLINFO_HTTP_CONNECTCODE 最后⼀个代理 CONNECT 响应代码。见 CURLINFO_HTTP_VERSION 连接中使⽤的 ht...
res = curl_easy_perform(c);intContentLength; curl_easy_getinfo(c, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T, &ContentLength);// this line prints 23.printf("content length: %i\n", ContentLength); curl_easy_cleanup(c); }return0; }intmain(){ ...