在Cocos2d中進行網絡編程和通信，通常會使用Cocos2d-x引擎的網絡模塊CCNetwork來實現。以下是一個簡單的使用CCNetwork進行網絡通信的示例代碼：

#include "cocos2d.h"
#include "network/HttpClient.h"

USING_NS_CC;
using namespace network;

void onHttpRequestCompleted(HttpClient *sender, HttpResponse *response)
{
    if (!response)
    {
        return;
    }

    if (0 != strlen(response->getHttpRequest()->getTag()))
    {
        log("%s completed", response->getHttpRequest()->getTag());
    }

    long statusCode = response->getResponseCode();
    char statusString[64] = {};
    sprintf(statusString, "HTTP Status Code: %ld, tag = %s", statusCode, response->getHttpRequest()->getTag());
    log("response code: %ld", statusCode);

    if (!response->isSucceed())
    {
        log("response failed");
        log("error buffer: %s", response->getErrorBuffer());
        return;
    }

    // dump data
    std::vector<char> *buffer = response->getResponseData();
    log("Http Test, dump data: ");
    for (unsigned int i = 0; i < buffer->size(); i++)
    {
        log("%c", (*buffer)[i]);
    }
}

void sendHttpRequest()
{
    HttpRequest *request = new HttpRequest();
    request->setUrl("http://www.example.com");
    request->setRequestType(HttpRequest::Type::GET);
    request->setResponseCallback(onHttpRequestCompleted);
    request->setTag("GET test");
    HttpClient::getInstance()->send(request);
    request->release();
}

// 在任何需要發送HTTP請求的地方調用sendHttpRequest()

在上面的示例代碼中，我們使用了Cocos2d-x的HttpClient類來發送HTTP請求，并在回調函數onHttpRequestCompleted中處理響應數據。當然，根據具體的需求，還可以使用WebSocket等其他方式進行網絡通信。需要注意的是，網絡編程可能涉及到網絡協議、數據傳輸等復雜內容，建議在實際開發中根據具體需求和情況進行更詳細的處理和調試。