axmol/tests/cpp-tests/Source/CurlTest/CurlTest.cpp

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#if (AX_TARGET_PLATFORM != AX_PLATFORM_EMSCRIPTEN)

#include "platform/PlatformConfig.h"
#include "CurlTest.h"
#include "stdio.h"
#include "stdlib.h"
#include "curl/curl.h"

USING_NS_AX;

CurlTests::CurlTests()
{
    ADD_TEST_CASE(CurlTest);
}

CurlTest::CurlTest()
{
    auto label = Label::createWithTTF("Curl Test", "fonts/arial.ttf", 28);
    addChild(label, 0);
    label->setPosition(VisibleRect::center().x, VisibleRect::top().y - 50);

    auto listener            = EventListenerTouchAllAtOnce::create();
    listener->onTouchesEnded = AX_CALLBACK_2(CurlTest::onTouchesEnded, this);
    _eventDispatcher->addEventListenerWithSceneGraphPriority(listener, this);

    // create a label to display the tip string
    _label = Label::createWithTTF("Touch the screen to connect", "fonts/arial.ttf", 22);
    _label->setPosition(VisibleRect::center());
    addChild(_label, 0);

    _label->retain();
}

struct MemoryStruct
{
    char* memory;
    size_t size;
};

static size_t WriteMemoryCallback(void* contents, size_t size, size_t nmemb, void* userp)
{
    size_t realsize          = size * nmemb;
    struct MemoryStruct* mem = (struct MemoryStruct*)userp;

    mem->memory = (char*)realloc(mem->memory, mem->size + realsize + 1);
    if (mem->memory == NULL)
    {
        /* out of memory! */
        printf("not enough memory (realloc returned NULL)\n");
        return 0;
    }

    memcpy(&(mem->memory[mem->size]), contents, realsize);
    mem->size += realsize;
    mem->memory[mem->size] = 0;

    return realsize;
}

// the test code is
// http://curl.haxx.se/mail/lib-2009-12/0071.html
void CurlTest::onTouchesEnded(const std::vector<Touch*>& touches, Event* event)
{
    CURL* curl;
    CURLcode res;
    char buffer[10];

    struct MemoryStruct chunk;

    chunk.memory = (char*)malloc(1); /* will be grown as needed by the realloc above */
    chunk.size   = 0;                /* no data at this point */

    curl = curl_easy_init();
    if (curl)
    {
        curl_easy_setopt(curl, CURLOPT_URL, "http://webtest.cocos2d-x.org/curltest");
        // code from http://curl.haxx.se/libcurl/c/getinmemory.html
        /* we pass our 'chunk' struct to the callback function */
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void*)&chunk);
        // If we don't provide a write function for curl, it will receive error code 23 on windows.
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback);

        res = curl_easy_perform(curl);
        /* always cleanup */
        curl_easy_cleanup(curl);
        if (res == 0)
        {
            _label->setString(StringUtils::format("Connect successfully!\n%s", chunk.memory));
        }
        else
        {
            sprintf(buffer, "code: %i", res);
            _label->setString(buffer);
        }
    }
    else
    {
        _label->setString("no curl");
    }
}

CurlTest::~CurlTest()
{
    _label->release();
}

#endif