程序通过认证代理访问网络?

[solohac]

公司的内网是通过认证代理服务器上网（也就是要输入账号密码的那种）
知道账号密码，代理服务器的情况下
我写的程序能不能不要每次启动都弹出框要求输入账号密码
（可以保存密码，我就是不喜欢老是弹，很烦）

wininet 之类的能支持这么做吗？

[oyljerry]

//Download   http   file   through   proxy 
//-------------------------------------------------------------------------------- 
To   find   details   about   Proxy   Authentication   and   Sever   Authentication   methed   in   MSDN, 
Just   search   for   the   keyword   "INTERNET_OPTION_USERNAME ". 
a   very   simple   example.   
CString   GeHttptFile(const   char   *url) 
{ 
CString   szContent; 
char   strProxyList[MAX_PATH],   strUsername[64],   strPassword[64]; 
//in   this   case   "proxya "   is   the   proxy   server   name,   "8080 "   is   its   port 
strcpy(strProxyList,   "proxya:8080 "); 
strcpy(strUsername,   "myusername "); 
strcpy(strPassword,   "mypassword "); 
DWORD   dwServiceType   =   AFX_INET_SERVICE_HTTP; 
CString   szServer,   szObject; 
INTERNET_PORT   nPort; 
AfxParseURL(url,   dwServiceType,   szServer,   szObject,   nPort); 
CInternetSession   mysession; 
CHttpConnection*   pConnection; 
CHttpFile*   pHttpFile; 
pConnection   =   mysession.GetHttpConnection(szServer, 
INTERNET_FLAG_KEEP_CONNECTION, 
INTERNET_INVALID_PORT_NUMBER, 
NULL,   NULL); 
pHttpFile   =   pConnection-> OpenRequest( "GET ",   szObject, 
  NULL,   0,   NULL,   NULL, 
  INTERNET_FLAG_KEEP_CONNECTION); 
//here   for   proxy 
INTERNET_PROXY_INFO   proxyinfo; 
proxyinfo.dwAccessType   =   INTERNET_OPEN_TYPE_PROXY; 
proxyinfo.lpszProxy   =   strProxyList; 
proxyinfo.lpszProxyBypass   =   NULL; 
mysession.SetOption(INTERNET_OPTION_PROXY,   (LPVOID)&proxyinfo,   sizeof(INTERNET_PROXY_INFO)); 
pHttpFile-> SetOption(INTERNET_OPTION_PROXY_USERNAME,   strUsername,   strlen(strUsername)+1); 
pHttpFile-> SetOption(INTERNET_OPTION_PROXY_PASSWORD,   strPassword,   strlen(strPassword)+1); 

pHttpFile-> SendRequest(NULL); 
DWORD   nFileSize   =   pHttpFile-> GetLength(); 
LPSTR   rbuf   =   szContent.GetBuffer(nFileSize); 
UINT   uBytesRead   =   pHttpFile-> Read(rbuf,   nFileSize); 
szContent.ReleaseBuffer(); 
pHttpFile-> Close(); 
delete   pHttpFile; 
pConnection-> Close(); 
delete   pConnection; 
mysession.Close(); 
return   szContent; 
}

[Eleven]

VC下如何利用代理服务器进行信息交换

[Eleven]

通过代理上网的vc　http客户端

[Eleven]

HINTERNET InternetConnect(
  __in  HINTERNET hInternet,
  __in  LPCTSTR lpszServerName,
  __in  INTERNET_PORT nServerPort,
  __in  LPCTSTR lpszUsername,
  __in  LPCTSTR lpszPassword,
  __in  DWORD dwService,
  __in  DWORD dwFlags,
  __in  DWORD_PTR dwContext
);

[solohac]

果然神速，我先看看

[solohac]

一直忙，做别的事情，终于有时间继续做这个。
这个是正常的匿名代理，没有涉及到认证代理（就是要账号密码的，不知道你们怎么称呼。英文又是什么）
[Quote=引用 2 楼 visualeleven 的回复:]

VC下如何利用代理服务器进行信息交换
通过代理上网的vc　http客户端
[/Quote]

[solohac]

[Quote=引用 1 楼 oyljerry 的回复:]

C/C++ code
//Download http file through proxy
//--------------------------------------------------------------------------------
To find details about Proxy Authentication and ……
[/Quote]

我尝试通过InternetSetOption把账号密码设置在由InternetOpen返回的HINTERNET中。
但是没有成功
服务器返回信息为：
认证失败！@#@！@！￥！@￥@！~#！