c语言http请求域名

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

int main(void) {
    CURL *curl;
    CURLcode res;

    curl_global_init(CURL_GLOBAL_DEFAULT);

    curl = curl_easy_init();
    if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

        /* 执行请求 */
        res = curl_easy_perform(curl);
        /* 检查是否请求成功 */
        if(res != CURLE_OK)
            fprintf(stderr, "curl_easy_perform() failed: %s\n",
                    curl_easy_strerror(res));

        /* 清理 */
        curl_easy_cleanup(curl);
    }

    curl_global_cleanup();
    return 0;
}

sudo apt-get install libcurl4-openssl-dev

gcc your_program.c -o your_program -lcurl

curl_easy_setopt(curl, CURLOPT_TIMEOUT, 30L); // 设置超时时间为30秒