libcurl test

Makefile

test: test.c
	gcc -o test test.c -lcurl

test.c

#include <curl/curl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

typedef struct {
  int statusCode;
  char *body;
} Response;


size_t static callback(void *ptr, size_t size, size_t nmemb, void *userdata) {
  static int index = 0;
  Response *response = (Response*) userdata;
  memcpy(response->body + index, ptr, nmemb);
  char sample[10];
  strncpy(sample, (char *)ptr, 9);
  sample[9] = '\0';
  printf("got the line begin with: %s\n", sample);
  index += nmemb;
  return size * nmemb;
}



int main(int argc, char **argv) {
  CURL *curl = curl_easy_init();

  if (curl) {
    char* url = "http://www.ietf.org/rfc/rfc2396.txt";

    Response *response = malloc(sizeof(Response));
    response->body = malloc(1024 * 1024);
    
    curl_easy_setopt(curl, CURLOPT_WRITEDATA, response);
    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, callback);
    curl_easy_setopt(curl, CURLOPT_URL, url);
    CURLcode code = curl_easy_perform(curl);
    if (code == CURLE_WRITE_ERROR) {
      printf("error occurred!");
    } else {
      printf("response code:%d", code);
    }

    printf("total bytes:%d", strlen(response->body));

    free(response->body);
    free(response);
  }

  
  return 0;
}