curl and libcurl 实现webqq httpget 和httppost

现在网络连接很多都是使用https连接来提高安全性，比如：淘宝，网银等。如何使用curl实现https连接？

首先导入curl.h和curlib.lib文件。

加入一下宏实现https连接

#define USE_OPENSSL#define CURL_STATICLIB#define USE_SSLEAY

整个cpp文件

#include <stdlib.h>#include <iostream>using namespace std;#include "../../include/curl/curl.h"#pragma comment(lib,"../../lib/curllib.lib")#define USE_OPENSSL#define CURL_STATICLIB#define USE_SSLEAYint main(void){  CURL *curl;  CURLcode res;  curl = curl_easy_init();  if(curl) {    curl_easy_setopt(curl, CURLOPT_URL, "https://login.taobao.com/member/login.jhtml?f=top&redirectURL=http%3A%2F%2Fwww.taobao.com%2F");//#ifdef SKIP_PEER_VERIFICATION    /*     * If you want to connect to a site who isn't using a certificate that is     * signed by one of the certs in the CA bundle you have, you can skip the     * verification of the server's certificate. This makes the connection     * A LOT LESS SECURE.     *     * If you have a CA cert for the server stored someplace else than in the     * default bundle, then the CURLOPT_CAPATH option might come handy for     * you.     */    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);//#endif//#ifdef SKIP_HOSTNAME_VERFICATION    /*     * If the site you're connecting to uses a different host name that what     * they have mentioned in their server certificate's commonName (or     * subjectAltName) fields, libcurl will refuse to connect. You can skip     * this check, but this will make the connection less secure.     */    //curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);//#endif    res = curl_easy_perform(curl);/* Check for errors */ if(res != CURLE_OK){fprintf(stderr, "curl_easy_perform() failed: %s\n",curl_easy_strerror(res));}curl_version_info_data * vinfo = curl_version_info(CURLVERSION_NOW);if(vinfo->features & CURL_VERSION_SSL){cout<<"CURL: SSL enabled"<<endl;}else{cout<<"CURL: SSL not enabled"<<endl;}/* always cleanup */curl_easy_cleanup(curl); return 0;}}

使用curl实现webqq httpget 和httppost

//HTTP getstring CQQLogin::HttpWebGet( string url, string referer_url ){string buffer;string get_url = url;// 初始化libcurl//string referer_url = "http://s.web2.qq.com/proxy.html?v=20110412001&callback=1&id=2";CURLcode return_code;return_code = curl_global_init(CURL_GLOBAL_ALL);if (CURLE_OK != return_code) return "";// 获取easy handleCURL *easy_handle = curl_easy_init();if (NULL == easy_handle){  curl_global_cleanup();return "";}// 设置easy handle属性return_code = curl_easy_setopt(easy_handle, CURLOPT_URL, get_url.c_str());curl_easy_setopt(easy_handle, CURLOPT_REFERER, referer_url.c_str());curl_easy_setopt(easy_handle, CURLOPT_USERAGENT,"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0)");curl_easy_setopt(easy_handle, CURLOPT_ENCODING,"gzip, deflate" );curl_easy_setopt(easy_handle, CURLOPT_SSL_VERIFYPEER, 0L);curl_easy_setopt(easy_handle, CURLOPT_WRITEFUNCTION, writer);curl_easy_setopt(easy_handle, CURLOPT_WRITEDATA, &buffer);curl_easy_setopt(easy_handle, CURLOPT_NOSIGNAL, 1L);//curl_easy_setopt(easy_handle, CURLOPT_SSL_VERIFYPEER, 0L);//提交第一步保存的cookie return_code = curl_easy_setopt(easy_handle, CURLOPT_COOKIEFILE,"cookie_login.txt");//把服务器发过来的cookie保存到cookie_open.txtreturn_code = curl_easy_setopt(easy_handle, CURLOPT_COOKIEJAR, "cookie_login.txt");// 执行数据请求return_code = curl_easy_perform(easy_handle); // 释放资源curl_easy_cleanup(easy_handle);curl_global_cleanup();buffer = UTF8Convert(buffer,CP_UTF8,CP_ACP);return buffer;}

//HTTP poststring CQQLogin::HttpWebPost(string url,string Ref, string post){CURLcode return_code;return_code = curl_global_init(CURL_GLOBAL_ALL);if (CURLE_OK != return_code) return NULL;// 获取easy handleCURL *easy_handle = curl_easy_init();if (NULL == easy_handle){  curl_global_cleanup();return NULL;}string buffer;string post_url = url; string referer_url = Ref; string fields = post;// 设置easy handle属性curl_easy_setopt(easy_handle, CURLOPT_URL,post_url.c_str());curl_easy_setopt(easy_handle, CURLOPT_REFERER,referer_url.c_str());curl_easy_setopt(easy_handle, CURLOPT_USERAGENT,"Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0)");curl_easy_setopt(easy_handle, CURLOPT_POST, 1);curl_easy_setopt(easy_handle, CURLOPT_WRITEFUNCTION, writer);curl_easy_setopt(easy_handle, CURLOPT_WRITEDATA, &buffer);curl_easy_setopt(easy_handle, CURLOPT_POSTFIELDS,fields.c_str());curl_easy_setopt(easy_handle, CURLOPT_NOSIGNAL, 1L);return_code = curl_easy_setopt(easy_handle, CURLOPT_SSL_VERIFYPEER, 0L);//提交第一步保存的cookie curl_easy_setopt(easy_handle, CURLOPT_COOKIEFILE,"cookie_login.txt");//保存登陆后的cookiecurl_easy_setopt(easy_handle, CURLOPT_COOKIEJAR,"cookie_login.txt");curl_easy_setopt(easy_handle, CURLOPT_FOLLOWLOCATION, 1);// 执行数据请求return_code = curl_easy_perform(easy_handle); buffer = UTF8Convert(buffer,CP_ACP,CP_UTF8);// 释放资源curl_easy_cleanup(easy_handle);curl_global_cleanup();return buffer;}