Data Transfer - libcurl

This is a C Library for client side URL transfers
libcurl is the library version of the popular curl command-line tool

link - https://curl.se/windows/ 
link - https://curl.haxx.se/download.html 
link - https://github.com/curl/curl/blob/curl-8_6_0/winbuild/README.md#building-your-own-application-with-libcurl-visual-studio-example 
link - https://github.com/libcpr/cpr 

link - https://github.com/mwmi/excel-xll 
link - github.com/xlladdins/xll24     - Keith Lewis 

download it to

C:\CURL-8-16-0 

C++ MFC for latest v143 build tools (ARM64 / ARM64C)
C++ MFC for latest v143 build tools (x86 & x64)

nuget - libcurl-vl43-shared 
link - github.com/curl/curl 

C:\CURL-8-16-0\curl-8.16.0\builds\libcurl-vc15-x64-debug-static-ipv6-sspi-channel\lib 

Configuration Properties > C/C++ > General 
Additional Include Directories - C:\CURL-8-16-0\curl-8.16.0\builds\libcurl-vc15-x64-debug-static-ipv6-sspi-channel\include 

Configuration Properties > Linker > General 
Additional Library Directories - C:\CURL-8-16-0\curl-8.16.0\builds\libcurl-vc15-x64-debug-static-ipv6-sspi-channel\lib 

Configuration Properties > VC++ Directories 
Executable Directories - C:\CURL-8-16-0\curl-8.16.0\builds\libcurl-vc15-x64-debug-static-ipv6-sspi-channel\bin 

Configuration Properties > Linker > Input 
Additional Dependencies - C:\CURL-8-16-0\curl-8.16.0\builds\libcurl-vc15-x64-debug-static-ipv6-sspi-channel\lib\libcurl_a_debug.dll 

Configuration Properties > Linker > Input 
Additional Dependencies - C:\Program Files (x86)\Windows Kits\10\Lib\Lib\10.0.19041.0\um\x64\secur32.lib 

curl_easy
curl_multi
curl_share
curl_url

#include <iostream> 
#include <curl/curl.h> 

size_t WriteCallback(void* contents, size_t size, size_t nmemb, void* userp) { 
    ((std::string*)userp)->append((char*)contents, size * nmemb); 
    return size * nmemb; 
} 

int main() { 
    CURL* curl; 
    CURLcode res; 
    std::string readBuffer; 

    curl = curl_easy_init(); 
    if(curl) { 
        curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); 
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback); 
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer); 
        res = curl_easy_perform(curl); 
        curl_easy_cleanup(curl); 

        std::cout << readBuffer << std::endl; 
    } 
    return 0; 
}