C++

GET

util.h

#ifndef UTIL_H
#define UTIL_H

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


struct MemoryStruct {
  char *memory;
  size_t size;
};

size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp);

#endif

util.cpp

#include "util.h"

size_t WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp){
  size_t realsize = size * nmemb;
  struct MemoryStruct *mem = (struct MemoryStruct *)userp;

  char *ptr = (char*) realloc(mem->memory, mem->size + realsize + 1);
  if(ptr == NULL){
    printf("error: could not allocate Memory!");
    return 0;
  }

  mem->memory = ptr;
  memcpy(&(mem->memory[mem->size]),contents ,realsize);
  mem->size +=realsize;
  mem->memory[mem->size]= 0;

  return realsize;
}

main.cpp

#include <iostream>
#include <string>
#include <curl/curl.h>
#include "util.h"

int main()
{
  CURL *curl_handle;
  CURLcode res;
  struct curl_slist *headerList = NULL;
  const char *body = (char *)"{\"options\": { \"method\": \"GET\",\"headers\": {\"Content-Type\": \"application/json\",\"Accept\": \"application/json\"}}, \"url\": \"/rest/api/3/issue/DEV-16\"}";

  struct MemoryStruct chunk;
  chunk.memory = (char *)malloc (1);
  chunk.size = 0;

  curl_handle = curl_easy_init();

  if(curl_handle){
    curl_easy_setopt(curl_handle,CURLOPT_URL, "< YOUR ENDPOINT URL >");
    curl_easy_setopt(curl_handle,CURLOPT_USERAGENT, "libcurl-agent/1.0");
    //add body
    curl_easy_setopt(curl_handle,CURLOPT_POSTFIELDSIZE, strlen(body));
    curl_easy_setopt(curl_handle,CURLOPT_POSTFIELDS, body);

    //setup callback response
    curl_easy_setopt(curl_handle,CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
    curl_easy_setopt(curl_handle,CURLOPT_WRITEDATA, (void *) &chunk);

    //set custom header list
    headerList = curl_slist_append(headerList, "apiKey:< YOURTOKEN >");
    curl_easy_setopt(curl_handle,CURLOPT_HTTPHEADER, headerList);

    //do request
    res = curl_easy_perform(curl_handle);

    //log response
    if(res != CURLE_OK){
      fprintf (stderr, "std error: %s\n", (char *) curl_easy_strerror);
    }else {
      printf("response size: %lu \n", (unsigned long) chunk.size);
      printf("response: %s \n", (char *) chunk.memory);
    }

    //clear memory
    curl_slist_free_all(headerList);
    curl_easy_cleanup(curl_handle);
    free(chunk.memory);
  }

  return 0;
}

POST

main.cpp

#include <iostream>
#include <string>
#include <curl/curl.h>
#include "util.h"

int main()
{
  CURL *curl_handle;
  CURLcode res;
  struct curl_slist *headerList = NULL;
  const char *body = (char *)"{
      \"options\": {
         \"method\": \"POST\",
         \"headers\": {
          \"Content-Type\": \"application/json\",
          \"Accept\": \"application/json\"
        },
        \"body\": {
          \"fields\": {
            \"project\":{
              \"name\": \"<your project name>\"
            },
            \"summary\": \"Create Issue via POST.\",
            \"description\": \"Creating of an issue via a POST request using the API Key Manager\",
            \"issuetype\": {
              \"id\": \"<your issue type id>\"
            }
          }
        }
      },
      \"url\": \"/rest/api/2/issue\"
    }";

  struct MemoryStruct chunk;
  chunk.memory = (char *)malloc (1);
  chunk.size = 0;

  curl_handle = curl_easy_init();

  if(curl_handle){
    curl_easy_setopt(curl_handle,CURLOPT_URL, "< YOUR ENDPOINT URL >");
    curl_easy_setopt(curl_handle,CURLOPT_USERAGENT, "libcurl-agent/1.0");
    //add body
    curl_easy_setopt(curl_handle,CURLOPT_POSTFIELDSIZE, strlen(body));
    curl_easy_setopt(curl_handle,CURLOPT_POSTFIELDS, body);

    //setup callback response
    curl_easy_setopt(curl_handle,CURLOPT_WRITEFUNCTION, WriteMemoryCallback);
    curl_easy_setopt(curl_handle,CURLOPT_WRITEDATA, (void *) &chunk);

    //set custom header list
    headerList = curl_slist_append(headerList, "apiKey:< YOURTOKEN >");
    curl_easy_setopt(curl_handle,CURLOPT_HTTPHEADER, headerList);

    //do request
    res = curl_easy_perform(curl_handle);

    //log response
    if(res != CURLE_OK){
      fprintf (stderr, "std error: %s\n", (char *) curl_easy_strerror);
    }else {
      printf("response size: %lu \n", (unsigned long) chunk.size);
      printf("response: %s \n", (char *) chunk.memory);
    }

    //clear memory
    curl_slist_free_all(headerList);
    curl_easy_cleanup(curl_handle);
    free(chunk.memory);
  }

  return 0;
}