HTTP connection using MFC CHttpConnection

Question

Dear Sir Plz help me. Q. how to connetion via Proxy to HTTP server.Any athuntication is reqired. Q.I write some code to send the data to Server but it will give error that server did not allow the request.At this time if i donot use proxy data will be send sucessfull but at the time when i use proxy the error will occure. Q.How to Upload the File on HTTP server using Winint.CInternetsession + CInternetconnetion. Q.Is posible to upload the file directly on server using ChttpConnection.Or any server side code will requre to upload the file.

shrikant gurav · Answer

Plz reply.. Thanks How to make Proxy authentication in MFC. I use InternetSetOption method for it.But still i get ERROR_INTERNET_CONNOT_CONNECT. in this i does not want to prompt the dialog box to take username and pwd  i do it hardcodeBut i dosenot want to do this bcz every client have diff user name and pwd.What is possibility to tackle this. Is any example for Basic authentication scheme where the user name and password are sent in cleartext to the server. Challenge-response schemes which allow for a challenge-response format. Thanks..

shrikant gurav · Answer

HINTERNET hOpenHandle hConnectHandle hResourceHandle;WORD dwError dwErrorCode; hOpenHandle = InternetOpen(Example INTERNET_OPEN_TYPE_PRECONFIG //INTERNET_OPEN_TYPE_DIRECT NULL NULL INTERNET_FLAG_SECURE); hConnectHandle = InternetConnect(hOpenHandle www.pxlsoft.com INTERNET_INVALID_PORT_NUMBER //INTERNET_DEFAULT_HTTPS_PORT _T(LoginName) _T(PWD) INTERNET_SERVICE_HTTP 00); hResourceHandle = HttpOpenRequest(hConnectHandle POST URL TO PHP NULL NULL NULL INTERNET_FLAG_KEEP_CONNECTION 0); resend: CString h = _T(Content-Type: multipart/form-data); CString s = _T(File_Content= hi &filename=hello.xml); BOOL bo = HttpSendRequest(hResourceHandle(LPCTSTR)&h h.GetLength()(LPVOID)&s s.GetLength()); // dwErrorCode stores the error code associated with the call to // HttpSendRequest. dwErrorCode = hResourceHandle ? ERROR_SUCCESS : GetLastError(); dwError = InternetErrorDlg( this ->GetSafeHwnd() hResourceHandle dwErrorCode FLAGS_ERROR_UI_FILTER_FOR_ERRORS | FLAGS_ERROR_UI_FLAGS_CHANGE_OPTIONS | FLAGS_ERROR_UI_FLAGS_GENERATE_DATA NULL); if (dwError == ERROR_INTERNET_FORCE_RETRY) goto resend; DWORD dwNumberOfBytesRead; char sz[1024]; string strResult; int result; do { result = InternetReadFile(hResourceHandle sz 1023 &dwNumberOfBytesRead); sz[dwNumberOfBytesRead] = '\0'; int x = strlen(sz); strResult += sz; memset(sz 0 1024); } while (result && dwNumberOfBytesRead != 0); Q. this is the code which i am using for authentication but i m unable to POST data  GET will work. Q.Why INTERNET_INVALID_PORT_NUMBER used in InternetConnection  i use 443 but it not working  Dailog box for asking Username and PWD will not be pop up if i use 443. Q.Authentication is become Heaktic for me.

Manish Dwivedi · Answer

Hi Take the reference of this article. http://www.informit.com/library/content.aspx?b=Visual_C_PlusPlus&seqNum=111&rl=1 HopeIt will help you. Happy Coding!!

HTTP connection using MFC , CHttpConnection