To make HTTP requests in C++, you can use a library like libcurl, which provides an easy-to-use interface for performing HTTP requests and handling responses. Here's an example of how to make a GET request using libcurl:
TEXT/X-C++SRC
1#include <iostream>
2#include <curl/curl.h>
3
4// Function to write response data
5size_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* output) {
6 size_t totalSize = size * nmemb;
7 output->append((char*)contents, totalSize);
8 return totalSize;
9}
10
11int main() {
12 CURL* curl;
13 CURLcode res;
14
15 // Initialize CURL
16 curl_global_init(CURL_GLOBAL_DEFAULT);
17 curl = curl_easy_init();
18
19 if (curl) {
20 std::string response;
21
22 // Set URL for the request
23 curl_easy_setopt(curl, CURLOPT_URL, "https://jsonplaceholder.typicode.com/posts/1");
24
25 // Set response callback function
26 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
27
28 // Pass response data to the callback function
29 curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
30
31 // Perform the request
32 res = curl_easy_perform(curl);
33
34 // Check for errors
35 if (res != CURLE_OK) {
36 std::cerr << "Failed to perform request: " << curl_easy_strerror(res) << std::endl;
37 }
38 else {
39 // Print the response
40 std::cout << response << std::endl;
41 }
42
43 // Cleanup CURL
44 curl_easy_cleanup(curl);
45 }
46
47 // Cleanup CURL global state
48 curl_global_cleanup();
49
50 return 0;
51}xxxxxxxxxx51
}// Function to write response datasize_t WriteCallback(void* contents, size_t size, size_t nmemb, std::string* output) { size_t totalSize = size * nmemb; output->append((char*)contents, totalSize); return totalSize;}int main() { CURL* curl; CURLcode res; // Initialize CURL curl_global_init(CURL_GLOBAL_DEFAULT); curl = curl_easy_init(); if (curl) { std::string response; // Set URL for the request curl_easy_setopt(curl, CURLOPT_URL, "https://jsonplaceholder.typicode.com/posts/1"); // Set response callback function curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback); // Pass response data to the callback function curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);OUTPUT
:001 > Cmd/Ctrl-Enter to run, Cmd/Ctrl-/ to comment
