static
void
LibTCPCloseCallback(void *arg)
{
struct lwip_callback_msg *msg = arg;
PTCP_PCB pcb = msg->Input.Close.Connection->SocketContext;
/* Empty the queue even if we're already "closed" */
LibTCPEmptyQueue(msg->Input.Close.Connection);
/* Check if we've already been closed */
if (msg->Input.Close.Connection->Closing)
{
msg->Output.Close.Error = ERR_OK;
goto done;
}
/* Enter "closing" mode if we're doing a normal close */
if (msg->Input.Close.Callback)
msg->Input.Close.Connection->Closing = TRUE;
/* Check if the PCB was already "closed" but the client doesn't know it yet */
if (!msg->Input.Close.Connection->SocketContext)
{
msg->Output.Close.Error = ERR_OK;
goto done;
}
/* Clear the PCB pointer and stop callbacks */
msg->Input.Close.Connection->SocketContext = NULL;
tcp_arg(pcb, NULL);
/* This may generate additional callbacks but we don't care,
* because they're too inconsistent to rely on */
msg->Output.Close.Error = tcp_close(pcb);
if (msg->Output.Close.Error)
{
/* Restore the PCB pointer */
msg->Input.Close.Connection->SocketContext = pcb;
msg->Input.Close.Connection->Closing = FALSE;
}
else if (msg->Input.Close.Callback)
{
TCPFinEventHandler(msg->Input.Close.Connection, ERR_CLSD);
}
done:
KeSetEvent(&msg->Event, IO_NO_INCREMENT, FALSE);
}
static
void
LibTCPCloseCallback(void *arg)
{
struct lwip_callback_msg *msg = arg;
PTCP_PCB pcb = msg->Input.Close.Connection->SocketContext;
/* Empty the queue even if we're already "closed" */
LibTCPEmptyQueue(msg->Input.Close.Connection);
if (!msg->Input.Close.Connection->SocketContext)
{
msg->Output.Close.Error = ERR_OK;
goto done;
}
/* Clear the PCB pointer */
msg->Input.Close.Connection->SocketContext = NULL;
switch (pcb->state)
{
case CLOSED:
case LISTEN:
case SYN_SENT:
msg->Output.Close.Error = tcp_close(pcb);
if (!msg->Output.Close.Error && msg->Input.Close.Callback)
TCPFinEventHandler(msg->Input.Close.Connection, ERR_CLSD);
break;
default:
/* Abort the socket */
tcp_abort(pcb);
msg->Output.Close.Error = ERR_OK;
break;
}
if (msg->Output.Close.Error)
{
/* Restore the PCB pointer */
msg->Input.Close.Connection->SocketContext = pcb;
}
done:
KeSetEvent(&msg->Event, IO_NO_INCREMENT, FALSE);
}
