使用libcurl下载https地址的文件
1 void downLoadFile(std::string filename, std::string newFilename) 2 { 3 CURL *curl_handle; 4 static const char *pagefilename = (char *)newFilename.data(); 5 FILE *pagefile; 6 char *p = (char *)filename.data(); 7 curl_global_init(CURL_GLOBAL_ALL); 8 9 /* init the curl session */ 10 curl_handle = curl_easy_init(); 11 12 /* set URL to get here */ 13 curl_easy_setopt(curl_handle, CURLOPT_URL, p); 14 15 /* Switch on full protocol/debug output while testing */ 16 curl_easy_setopt(curl_handle, CURLOPT_VERBOSE, 1L); 17 18 /* disable progress meter, set to 0L to enable and disable debug output */ 19 curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L); 20 /* google.com is redirected, so we tell LibCurl to follow redirection */ 21 curl_easy_setopt(curl_handle, CURLOPT_FOLLOWLOCATION, 1L); 22 /* SSL Options */ 23 curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYPEER, 1); 24 curl_easy_setopt(curl_handle, CURLOPT_SSL_VERIFYHOST, 1); 25 26 /* Provide CA Certs from http://curl.haxx.se/docs/caextract.html */ 27 curl_easy_setopt(curl_handle, CURLOPT_CAINFO, "ca-bundle.crt"); 28 /* send all data to this function */ 29 curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data); 30 31 /* open the file */ 32 pagefile = fopen(pagefilename, "wb"); 33 if (pagefile) { 34 35 /* write the page body to this file handle */ 36 curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, pagefile); 37 38 /* get it! */ 39 curl_easy_perform(curl_handle); 40 41 /* close the header file */ 42 fclose(pagefile); 43 } 44 45 /* cleanup curl stuff */ 46 curl_easy_cleanup(curl_handle); 47 48 return ; 49 }
1 static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream) 2 { 3 size_t written = fwrite(ptr, size, nmemb, (FILE *)stream); 4 return written; 5 }
下载https地址的qq.exe程序
如果有朋友不想编译，我也把我编好的库和lib头文件打包，https://files.cnblogs.com/files/nightnine/libcurl.zip