http://www.codeproject.com/internet/casyncproxysocket.asp CAsyncProxySocket - CAsyncSocket derived class to connect through proxies By Tim Kosse use wininet directly to pass through proxy: //Download http file through proxy //-------------------------------------------------------------------------------- We can find details about Proxy Authentication and Sever Authentication methed in MSDN. Just search for the keyword "INTERNET_OPTION_USERNAME". Here I give a very simple example. It works in my project. 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; }
CAsyncProxySocket - CAsyncSocket derived class to connect through proxies
By Tim Kosse use wininet directly to pass through proxy:
//Download http file through proxy
//--------------------------------------------------------------------------------
We can find details about Proxy Authentication and Sever Authentication methed in MSDN.
Just search for the keyword "INTERNET_OPTION_USERNAME".
Here I give a very simple example. It works in my project.
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;
}