From: vitaly.vatnikov@compuware.com
Sent: Sunday, June 17, 2001 9:00 PM
To: NT Developers Interest List
Subject: [ntdev] Re: Build Connection in ClientEventConnect in TDI
Client

I haven't looked thoroughly but your problem could be in the
way you deal with the accept IRP.
Try to build the IRP using TdiBuildAccept and pass the pointer
to the irp to AcceptIrp output parameter, ie do NOT submit it
to TDI using your TdiCall(). The transport driver will process
this irp as "accept" when your return STATUS_MORE_PROCESSING_REQUIRED.
Something like:

TdiBuildAccept(pGlobalIrp,...);
IoSetNextIrpStackLocation(pGlobalIrp)
*AcceptIrp = pGlobalIrp;
return STATUS_MORE_PROCESSING_REQUIRED;

Good luck,

- Vitaly
 

On 06/15/01, "ivailo.todorov@atia.com" wrote:
> Hi
> 
> I have build two NT kernel-mode TDI Client Drivers; one acts as "server"
> and another acts as "client". 
> 
> In "server", I register ClientEventConnect routine to receive connection
> request. I preallocate IRP (TdiBuildAccept), in ClientEventConnect I
> return this IRP, for TDI will use this IRP to accept the connection
> request. In the IRP I set the "client"'s IP address and port.
> 
> The "server" do receive the connection request, but after
> ClientEventConnect return, the "client" report that the remote refused
> the connection.
> 
> 
> NTSTATUS 
> ClientEventConnect (
> 	IN PVOID TdiEventContext,
>     IN LONG RemoteAddressLength,
>     IN PVOID RemoteAddress,
>     IN LONG UserDataLength,
>     IN PVOID UserData,
>     IN LONG OptionsLength,
>     IN PVOID Options,
>     OUT CONNECTION_CONTEXT *ConnectionContext,
>     OUT PIRP *AcceptIrp
>     )
> {
> 	NTSTATUS			ntStatus =   STATUS_UNSUCCESSFUL;
> 	CONNECTION_CONTEXT		connectContext;
> 	PDEVICE_OBJECT			deviceObject;
> 
> 	IO_STATUS_BLOCK					IoStatusBlock;
> 	PTDI_CONNECTION_INFORMATION		pConnectInfo = NULL; 
> 	TDI_CONNECTION_INFORMATION		connectInfo;
> 	
> 
> 	KdPrint(( "Server: ClientEventConnect: Start! \n" ));
> 	KdPrint(( "Server: remoteAddressLength = %u \n", RemoteAddressLength ));
> 
> 
> 	connectContext = ExAllocatePool( NonPagedPool, sizeof( 
> TdiConnectionContext ) );
> 	
> 	RtlCopyMemory ( connectContext,										// copy transport name
> 		TdiConnectionContext, 
> 		sizeof ( TdiConnectionContext ) );
> 	
> 	ConnectionContext = &connectContext;
> 	
> 	AcceptIrp = &pGlobalIrp;
> 
> 	
> 
> 	pConnectInfo = (PTDI_CONNECTION_INFORMATION)ExAllocatePool (   // allocate
> buffer
> 		NonPagedPool,
> 		sizeof ( TDI_CONNECTION_INFORMATION ) +
> 		RemoteAddressLength );
> 
> 	if ( pConnectInfo )                                            // validate
> pointer
> 	{
> 		RtlZeroMemory ( pConnectInfo,                               // clear 
> buffer
> 			sizeof ( TDI_CONNECTION_INFORMATION ) +
> 			RemoteAddressLength );
> 
> 		pConnectInfo->RemoteAddressLength = RemoteAddressLength;
> 
> //		pConnectInfo->RemoteAddress = (PUCHAR)pConnectInfo + sizeof ( 
> TDI_CONNECTION_INFORMATION );
> 		
> 		pConnectInfo->RemoteAddress = (PTA_IP_ADDRESS)RemoteAddress;
> 	
> 
> 		connectInfo.RemoteAddressLength = RemoteAddressLength;
> 		connectInfo.RemoteAddress		= RemoteAddress;
> 
> 		deviceObject = IoGetRelatedDeviceObject( connectObject );
> 		
> 		
> 		TdiBuildAccept(
> 			pGlobalIrp,
> 			deviceObject,
> 			connectObject,
> 			NULL,
> 			NULL,
> 			&connectInfo,
> 			NULL //pReturnConnectInfo
> 			);
> 		
> 		
> 		ntStatus = TdiCall( pGlobalIrp, deviceObject, &IoStatusBlock );
> 
> 
> 
> 		if ( pConnectInfo )
> 			ExFreePool( pConnectInfo ); 
> 	  }	
> 
> 	if ( NT_SUCCESS( ntStatus ) )
> 		ntStatus = STATUS_MORE_PROCESSING_REQUIRED;
> 	else 
> 		ntStatus = STATUS_CONNECTION_REFUSED;
> 
> 
> 	KdPrint(( "TdiClient: ClientEventConnect: exit Status = 0x%X \n", ntStatus
> ));
> 
> 	return ( ntStatus );
> }
> 
> 
> NTSTATUS 
> ClientEventConnect (
> 	IN PVOID TdiEventContext,
>     IN LONG RemoteAddressLength,
>     IN PVOID RemoteAddress,
>     IN LONG UserDataLength,
>     IN PVOID UserData,
>     IN LONG OptionsLength,
>     IN PVOID Options,
>     OUT CONNECTION_CONTEXT *ConnectionContext,
>     OUT PIRP *AcceptIrp
>     )
> {
> 	NTSTATUS				ntStatus = STATUS_UNSUCCESSFUL;
> //	WORK_QUEUE_ITEM			WorkItem;
> //	CONNECT_INFO			ConnectInfo;
> 	CONNECTION_CONTEXT		connectContext;
> 	PDEVICE_OBJECT			deviceObject;
> 
> 	IO_STATUS_BLOCK					IoStatusBlock;
> 	PTDI_CONNECTION_INFORMATION		pConnectInfo = NULL; 
> 	TDI_CONNECTION_INFORMATION		connectInfo;
> 	
> 
> 	KdPrint(( "Server: ClientEventConnect: Start! \n" ));
> 	KdPrint(( "Server: remoteAddressLength = %u \n", RemoteAddressLength ));
> 
> 
> 	connectContext = ExAllocatePool( NonPagedPool, sizeof( 
> TdiConnectionContext ) );
> 	
> 	RtlCopyMemory ( connectContext,										// copy transport name
> 		TdiConnectionContext, 
> 		sizeof ( TdiConnectionContext ) );
> 	
> 	ConnectionContext = &connectContext;
> 	
> 	AcceptIrp = &pGlobalIrp;
> 
> 	
> 
> 	pConnectInfo = (PTDI_CONNECTION_INFORMATION)ExAllocatePool (   // allocate
> buffer
> 		NonPagedPool,
> 		sizeof ( TDI_CONNECTION_INFORMATION ) +
> 		RemoteAddressLength );
> 
> 	if ( pConnectInfo )                                            // validate
> pointer
> 	{
> 		RtlZeroMemory ( pConnectInfo,                               // clear 
> buffer
> 			sizeof ( TDI_CONNECTION_INFORMATION ) +
> 			RemoteAddressLength );
> 
> 		pConnectInfo->RemoteAddressLength = RemoteAddressLength;
> 
> //		pConnectInfo->RemoteAddress = (PUCHAR)pConnectInfo + sizeof ( 
> TDI_CONNECTION_INFORMATION );
> 		
> 		pConnectInfo->RemoteAddress = (PTA_IP_ADDRESS)RemoteAddress;
> 	
> 
> 		connectInfo.RemoteAddressLength = RemoteAddressLength;
> 		connectInfo.RemoteAddress		= RemoteAddress;
> 
> 		//
> 		//	Get deviceObject from connectObject
> 		//
> 		deviceObject = IoGetRelatedDeviceObject( connectObject );
> 		
> 		
> 		TdiBuildAccept(
> 			pGlobalIrp,
> 			deviceObject,
> 			connectObject,
> 			NULL,
> 			NULL,
> 			&connectInfo,
> 			NULL //pReturnConnectInfo
> 			);
> 		
> 		
> 		ntStatus = TdiCall( pGlobalIrp, deviceObject, &IoStatusBlock );
> 
> 
> 
> 		if ( pConnectInfo )
> 			ExFreePool( pConnectInfo ); 
> 	  }	
> 
> 	if ( NT_SUCCESS( ntStatus ) )
> 		ntStatus = STATUS_MORE_PROCESSING_REQUIRED;
> 	else 
> 		ntStatus = STATUS_CONNECTION_REFUSED;
> 
> 
> 	KdPrint(( "TdiClient: ClientEventConnect: exit Status = 0x%X \n", ntStatus
> ));
> 
> 	return ( STATUS_INSUFFICIENT_RESOURCES );
> }
> 
> 
> 
> Please, send my sample!
> Any suggestions are appreciated.
>  
> Best Regards,
> Ivaylo Todorov
>  
> 
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