internettimeout-property-example-vc.md

title	InternetTimeout Property Example (VC++) | Microsoft Docs
ms.prod	sql
ms.prod_service	connectivity
ms.technology	connectivity
ms.custom
ms.date	01/20/2017
ms.reviewer
ms.topic	conceptual
dev_langs	C++
helpviewer_keywords	InternetTimeout property [ADO], VC++ example
ms.assetid	88b6d05c-d4eb-4ab1-bbe2-95d146237f94
author	MightyPen
ms.author	genemi

InternetTimeout Property Example (VC++)

Important

Beginning with Windows 8 and Windows Server 2012, RDS server components are no longer included in the Windows operating system (see Windows 8 and Windows Server 2012 Compatibility Cookbook for more detail). RDS client components will be removed in a future version of Windows. Avoid using this feature in new development work, and plan to modify applications that currently use this feature. Applications that use RDS should migrate to WCF Data Service.

This example demonstrates the InternetTimeout property, which exists on the DataControl and DataSpace objects. In this case, the InternetTimeout property is demonstrated on the DataControl object and the timeout is set to 20 seconds.

// BeginInternetTimeoutCpp  
#import "c:\Program Files\Common Files\System\ADO\msado15.dll" \  
    no_namespace rename("EOF", "EndOfFile")  
#import "C:\Program Files\Common Files\System\MSADC\msadco.dll"  
  
#include <ole2.h>  
#include <stdio.h>  
#include <conio.h>  
  
// Function declarations  
inline void TESTHR(HRESULT x) {if FAILED(x) _com_issue_error(x);};  
void InternetTimeOutX(void);  
void PrintProviderError(_ConnectionPtr pConnection);  
void PrintComError(_com_error &e);  
  
//////////////////////////////////////////////////////////  
//                                                      //  
//    Main Function                                     //  
//                                                      //  
//////////////////////////////////////////////////////////  
  
void main()  
{  
    if(FAILED(::CoInitialize(NULL)))  
        return;  
  
    InternetTimeOutX();  
  
    ::CoUninitialize();  
}  
  
//////////////////////////////////////////////////////////  
//                                                      //  
//         InternetTimeOutX Function                    //  
//                                                      //  
//////////////////////////////////////////////////////////  
  
void InternetTimeOutX(void)   
{  
    HRESULT hr = S_OK;  
  
    // Define ADO object pointers.  
    // Initialize pointers on define.  
    // These are in the ADODB::  namespace.  
    _RecordsetPtr  pRst = NULL;  
  
    //Define RDS object pointers  
    RDS::IBindMgrPtr dc ;  
  
    try  
    {  
        TESTHR(dc.CreateInstance(__uuidof(RDS::DataControl)));  
        dc->Server = "https://MyServer";  
        dc->Connect = "Data Source='AuthorDatabase'";  
        dc->SQL = "SELECT * FROM Authors";  
  
        // Wait at least 20 seconds.  
        dc->InternetTimeout = 20000;  
        dc->Refresh();  
  
        // Use another Recordset as a convenience  
        pRst = dc->GetRecordset();  
        while(!(pRst->EndOfFile))  
        {  
            printf("%s %s",(LPSTR) (_bstr_t) pRst->Fields->  
                GetItem("au_fname")->Value,  
               (LPSTR) (_bstr_t) pRst->Fields->  
                GetItem("au_lname")->Value);  
  
            pRst->MoveNext();  
        }  
        pRst->Close();  
    }  
  
    catch (_com_error &e)  
    {  
        PrintProviderError(pRst->GetActiveConnection());  
        PrintComError(e);  
    }  
}  
  
//////////////////////////////////////////////////////////  
//                                                      //  
//     PrintProviderError Function                      //  
//                                                      //  
//////////////////////////////////////////////////////////  
  
void PrintProviderError(_ConnectionPtr pConnection)  
{  
    // Print Provider Errors from Connection object.  
    // pErr is a record object in the Connection's Error collection.  
    ErrorPtr  pErr  = NULL;  
  
    if( (pConnection->Errors->Count) > 0)  
    {  
        long nCount = pConnection->Errors->Count;  
        // Collection ranges from 0 to nCount -1.  
        for(long i = 0; i < nCount; i++)  
        {  
            pErr = pConnection->Errors->GetItem(i);  
            printf("\t Error number: %x\t%s", pErr->Number,   
                pErr->Description);  
        }  
    }  
}  
  
//////////////////////////////////////////////////////////  
//                                                      //  
//     PrintComError Function                           //  
//                                                      //  
//////////////////////////////////////////////////////////  
  
void PrintComError(_com_error &e)  
{  
    _bstr_t bstrSource(e.Source());  
    _bstr_t bstrDescription(e.Description());  
  
    // Print Com errors.    
    printf("Error\n");  
    printf("\tCode = %08lx\n", e.Error());  
    printf("\tCode meaning = %s\n", e.ErrorMessage());  
    printf("\tSource = %s\n", (LPCSTR) bstrSource);  
    printf("\tDescription = %s\n", (LPCSTR) bstrDescription);  
}  
// EndInternetTimeoutCpp  

See Also

InternetTimeout Property (RDS)