cocos2d-x中的curl

1:  

       2:  

       3: pthread_mutex_t mutex;

       4: pthread_t thread;

       5: sem_t * m_structSem;

       6:  

       7: struct SimpleStructure

       8: {

       9:     int data;

      10:     float otherData;

      11: };

      12:  

      13: void* ThreadFunction(void* arg)

      14: {

      15:     pthread_mutex_lock(&mutex);

      16:     SimpleStructure* args = (SimpleStructure*)arg;

      17:     

      18:     //todo...

      19:  

      20:     delete args;

      21:     pthread_mutex_unlock(&mutex);

      22:  

      23:     pthread_mutex_destroy(&mutex);

      24:     sem_destroy(m_structSem);

      25:  

      26:     return NULL;

      27: }

      28:  

      29: pthread_mutex_init(&mutex, NULL);

      30: m_structSem = sem_open(strThreadName.c_str(), O_CREAT, 0644, 0)

      31:  

      32: //

      33: SimpleStructure* args = new SimpleStructure();

      34: args->data = 1;

      35: args->otherData = 2.0f;

      36: //

      37: pthread_create(&thread, NULL, &ThreadFunction, args);

      38:  

      39:

1: CURL * curl;

       2:  

       3: string strHtml;

       4: string strRetData = "";

       5:  

       6: //第一步：初始化CURL，取得初始化成功后的CURL指针。

       7: curl = curl_easy_init();

       8:  

       9: if (!curl)

      10: {

      11:     return false;

      12: }

      13:  

      14: CCLOG("Http get string, conn: %s, url: %s", strConnName.c_str(), strUrl.c_str());

      15:  

      16: curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, HttpWriteString);

      17: curl_easy_setopt(curl, CURLOPT_WRITEDATA, &strHtml);

      18: curl_easy_setopt(curl, CURLOPT_FAILONERROR, true);

      19: curl_easy_setopt(curl, CURLOPT_TIMEOUT, 10);

      20:  

      21: //这里定义一个CURL库中API的返回值，用于取得API调用的结果。  

      22: CURLcode res;

      23:  

      24: //第二步，设定我们用此CURL指针来完成的动作。

      25: //参数一为CURL指针，参数二为相应的动作类型枚举，这个枚举值在curl.h中定义，比如本例中的CURLOPT_URL，定义为CINIT(URL,  OBJECTPOINT, 2)，即联接一个网站的HTTP服务。

      26: //参数三为动作对应的数据参数，这里是网站的URL地址。  

      27: curl_easy_setopt(curl, CURLOPT_URL, strUrl.c_str());

      28:  

      29: ///第三步，执行上面设定的动作处理。返回结果放在res中。  

      30: res = curl_easy_perform(curl);  

      31:  

      32: //最后一步，清除CURL指针，结束对CURL库的使用。  

      33: curl_easy_cleanup(curl); 

      34:  

      35: if (res == CURLE_OK)

      36: {

      37:     strRetData = strHtml;

      38:  

      39:     CCLOG("Http get string, conn: %s, ret: %s", strConnName.c_str(), strRetData.c_str());    

      40: }

      41: else 

      42: {

      43:     //request error

      44: }

      45:  

      46: strRetData = "";

      47:  

      48: CC_SAFE_DELETE(curl);