Libcurl is a free, open source library for transferring data. It supports various protocols include FTP, FTPS, HTTP, HTTPS, GOPHER, TFTP, SCP, SFTP, TELNET, DICT, LDAP, LDAPS, FILE, IMAP, SMTP, POP3, RTSP and RTMP.

1. Download libcurl.

2. Unzip the package and run Visual Studio Command Line Tool.

3. Change directory to winbuild.

4. Build static libraries with following command:

   nmake /f Makefile.vc mode=static VC=14 MACHINE=x64 DEBUG=no
   

5. The generated libraries and header files are located at ../builds.

6. Create a new win32 project in Visual Studio 2015.

7. Copy relevant libs and includes to the project.

8. Write a simple test.

   #include "stdafx.h"
   #include "libcurl/include/curl/curl.h"
   #ifdef _DEBUG
   

#pragma comment(lib, "libcurl/lib/libcurl_a_debug.lib") #else #pragma comment(lib, "libcurl/lib/libcurl_a.lib") #endif int main() { curl_global_init(CURL_GLOBAL_DEFAULT); CURL *curl = curl_easy_init(); if (curl) { CURLcode res; curl_easy_setopt(curl, CURLOPT_URL, "http://www.dynamsoft.com"); res = curl_easy_perform(curl); curl_easy_cleanup(curl); } curl_global_cleanup(); return 0; } ```

• https://github.com/bagder/curl
• http://curl.haxx.se/libcurl/c/libcurl-tutorial.html

How to Build and Use Libcurl with VS2015 on Windows