libcurl

#include "HelloWorldScene.h"
#include "SimpleAudioEngine.h"

#include <stdio.h>
#include "external/curl/include/win32/curl/curl.h"

Scene* HelloWorld::createScene()
{
    // 'scene' is an autorelease object
    auto scene = Scene::create();
    
    // 'layer' is an autorelease object
    auto layer = HelloWorld::create();

    // add layer as a child to scene
    scene->addChild(layer);

    // return the scene
    return scene;
}

size_t process_data(void* buffer, size_t size, size_t nmemb, void* uer_p)
{
    FILE* fp = (FILE*)uer_p;
    size_t retsize = fwrite(buffer, size, nmemb, fp);
    return retsize;
}

size_t progress_back(void* tp, double dltotal, double dlnow, double ultotal, double ulnow)
{
    int per = (int)(dlnow * 100.0 / dltotal);
    CCLOG("now load:%d", per);
    Label* lbl = (Label*)tp;

    String str;
    str.initWithFormat("load.......:%d", per);
    lbl->setString(str.getCString());
    return 0;
}

void HelloWorld::mythread()
{
    CURL* curl;
    CURLcode retCode;
    curl = curl_easy_init();
    if (curl)
    {
        FILE* fp = fopen("data.html", "ab+");
        curl_easy_setopt(curl, CURLOPT_URL, "http://www.360kan.com/");
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &process_data);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
        curl_easy_setopt(curl, CURLOPT_NOPROGRESS, 0L);
        curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, &progress_back);
        curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, this->lbl);

        retCode = curl_easy_perform(curl);
        if (retCode != 0)
        {
            CCLOG("curl error,errorcode:%d", retCode);
        }


        fclose(fp);
        curl_easy_cleanup(curl);
    }

}

void HelloWorld::onEnter()
{
    Layer::onEnter();

    std::thread t(&HelloWorld::mythread, this);
    t.detach();
}
// on "init" you need to initialize your instance
bool HelloWorld::init()
{
    //////////////////////////////
    // 1. super init first
    if ( !Layer::init() )
    {
        return false;
    }

    this->lbl = Label::create();
    this->addChild(this->lbl);
    this->lbl->setPosition(Vec2(100, 100));
    lbl->setString("");

    return true;
}