curl lib in C
Firstly you need to install libcurl in your system:
sudo apt-get install curl libcurl3
Next is create a C program file with content below:
#include <curl/curl.h>
#include <curl/types.h>
#include <curl/easy.h>
#include <unistd.h>
#include <stdio.h>
int main(int argc,char* argv[])
{
printf("%s\n",curl_version());
CURL* curl=curl_easy_init();
//init curl request insntance
CURLcode result;
//create curlcode instance for getting result
if(NULL==curl)
return;
curl_easy_setopt(curl,CURLOPT_URL,argv[1]);
//setup request url in
result=curl_easy_perform(curl);
//perform http request
curl_easy_cleanup(curl);
//clean curl environment
printf("%d\n",result);
//print feedback result
printf("Now I can send HTTP request in C\n");
return 0;
}
To make this program, I use cmake as my makefile generator and this have to link libcurl.so into object file, hence there needs some changes in CMakeLists.txt
SET(LIBRARIES libcurl.so)
TARGET_LINK_LIBRARIES(BINARY_NAME ${LIBRARIES})
Then just make it and execute $ ./binary www.google.com to make request.