C++ 爬虫代理示例

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libcurl

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

static size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp)
{
    ((std::string*)userp)->append((char*)contents, size * nmemb);
    return size * nmemb;
}
int main(void)
{

    CURL* curl;
    CURLcode res;
    std::string readBuffer;
    curl = curl_easy_init();
    if (curl) {

        curl_easy_setopt(curl, CURLOPT_URL, "https://httpbin.org/ip");
        curl_easy_setopt(curl, CURLOPT_PROXY, "http://t.16yun.cn:31111");
        curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, "username:password");
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &readBuffer);
        /* Perform the request, res will get the return code */
        res = curl_easy_perform(curl);
            if(res != CURLE_OK){
                fprintf(stderr, "curl_easy_perform() failed: %s\n",curl_easy_strerror(res));
        }

        /* always cleanup */
        curl_easy_cleanup(curl);

        std::cout << readBuffer << std::endl;
    }
    return 0;
}