CInternetSession的简单使用例子

来源：互联网发布：网络攻防技术教程编辑：程序博客网时间：2024/05/20 10:52

1. CInternetSession的简单使用

CInternetSession session;CHttpFile *file = NULL;CString strURL = " http://www.google.com";CString strHtml = "”;   //存放网页数据try{       file = (CHttpFile*)session.OpenURL(strURL);}catch(CInternetException * m_pException){       file = NULL;       m_pException->m_dwError;       m_pException->Delete();       session.Close();       MessageBox("CInternetException");}CString strLine;if(file != NULL){       while(file->ReadString(strLine) != NULL){       strHtml += strLine;       }}else{       MessageBox("fail");}session.Close();file->Close();delete file;file = NULL;

2. CInternetSession的代理与超时使用

CInternetSession session;CHttpFile *file = NULL;  INTERNET_PROXY_INFO proxyinfo;proxyinfo.dwAccessType = INTERNET_OPEN_TYPE_PROXY;proxyinfo.lpszProxy ="211.104.243.73:8080";proxyinfo.lpszProxyBypass = NULL;session.SetOption(INTERNET_OPTION_PROXY,(LPVOID)&proxyinfo,sizeof(INTERNET_PROXY_INFO));session.SetOption(INTERNET_OPTION_CONNECT_TIMEOUT, 5000);      // 5秒的连接超时session.SetOption(INTERNET_OPTION_SEND_TIMEOUT, 1000);           // 1秒的发送超时session.SetOption(INTERNET_OPTION_RECEIVE_TIMEOUT, 7000);        // 7秒的接收超时session.SetOption(INTERNET_OPTION_DATA_SEND_TIMEOUT, 1000);     // 1秒的发送超时session.SetOption(INTERNET_OPTION_DATA_RECEIVE_TIMEOUT, 7000);       // 7秒的接收超时session.SetOption(INTERNET_OPTION_CONNECT_RETRIES, 1);          // 1次重试try{       file = (CHttpFile*)session.OpenURL("http://www.163.com",1,INTERNET_FLAG_TRANSFER_ASCII|INTERNET_FLAG_RELOAD|INTERNET_FLAG_DONT_CACHE);}catch(CInternetException * m_pException){       file = NULL;       m_pException->m_dwError;       m_pException->Delete();       session.Close();       MessageBox("CInternetException");}CString strLine;if(file != NULL){       while(file->ReadString(strLine) != NULL){              MessageBox(strLine);       }}else{       MessageBox("fail");}file->Close();session.Close();

3. CInternetSession的POST使用

CInternetSession m_InetSession(_T("session"),       0,       INTERNET_OPEN_TYPE_PRECONFIG,       NULL,       NULL,       INTERNET_FLAG_DONT_CACHE);     //设置不缓冲CHttpConnection* pServer = NULL;CHttpFile* pFile = NULL;CString strHtml = "";CString strRequest = "name=123&pwd=321\r\n"; //POST过去的数据CString strHeaders = "Accept: */*\r\nReferer: http://www.goodwaiter.com/\r\nAccept-Language: zh-cn\r\nContent-Type: application/x-www-form-urlencoded\r\nAccept-Encoding: gzip, deflate\r\nUser-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";try{       INTERNET_PORT nPort; //端口     nPort=80;       pServer = m_InetSession.GetHttpConnection("www.goodwaiter.com", nPort);       pFile = pServer->OpenRequest(CHttpConnection::HTTP_VERB_POST,"/");       pFile->AddRequestHeaders(strHeaders);       pFile->SendRequestEx(strRequest.GetLength());       pFile->WriteString(strRequest); //重要-->m_Request 中有"name=aaa&name2=BBB&..."       pFile->EndRequest();       DWORD dwRet;       pFile->QueryInfoStatusCode(dwRet);       if (dwRet == HTTP_STATUS_OK){              CString strLine;              while ((nRead = pFile->ReadString(strLine))>0)              {                     strHtml += strLine;              }       }           delete pFile;       delete pServer;}catch (CInternetException* e){       e->m_dwContext;}

0 0