private void setState(int state)
{
//
// We don't want to send close connection messages if the endpoint
// only supports oneway transmission from client to server.
//
if(_endpoint.datagram() && state == StateClosing)
{
state = StateClosed;
}
//
// Skip graceful shutdown if we are destroyed before validation.
//
if(_state <= StateNotValidated && state == StateClosing)
{
state = StateClosed;
}
if(_state == state) // Don't switch twice.
{
return;
}
try
{
switch(state)
{
case StateNotInitialized:
{
Debug.Assert(false);
break;
}
case StateNotValidated:
{
if(_state != StateNotInitialized)
{
Debug.Assert(_state == StateClosed);
return;
}
break;
}
case StateActive:
{
//
// Can only switch from holding or not validated to
// active.
//
if(_state != StateHolding && _state != StateNotValidated)
{
return;
}
_threadPool.register(this, IceInternal.SocketOperation.Read);
break;
}
case StateHolding:
{
//
// Can only switch from active or not validated to
// holding.
//
if(_state != StateActive && _state != StateNotValidated)
{
return;
}
if(_state == StateActive)
{
_threadPool.unregister(this, IceInternal.SocketOperation.Read);
}
break;
}
case StateClosing:
case StateClosingPending:
{
//
// Can't change back from closing pending.
//
if(_state >= StateClosingPending)
{
return;
}
break;
}
case StateClosed:
{
if(_state == StateFinished)
{
return;
}
_batchRequestQueue.destroy(_exception);
_threadPool.finish(this);
_transceiver.close();
break;
}
case StateFinished:
{
Debug.Assert(_state == StateClosed);
_transceiver.destroy();
_communicator = null;
break;
}
}
}
catch(Ice.LocalException ex)
{
_logger.error("unexpected connection exception:\n" + ex + "\n" + _transceiver.ToString());
}
//
// We only register with the connection monitor if our new state
// is StateActive. Otherwise we unregister with the connection
// monitor, but only if we were registered before, i.e., if our
// old state was StateActive.
//
if(_monitor != null)
{
if(state == StateActive)
{
if(_acmLastActivity > -1)
{
_acmLastActivity = IceInternal.Time.currentMonotonicTimeMillis();
}
_monitor.add(this);
}
else if(_state == StateActive)
{
_monitor.remove(this);
}
}
if(_instance.initializationData().observer != null)
{
ConnectionState oldState = toConnectionState(_state);
ConnectionState newState = toConnectionState(state);
if(oldState != newState)
{
_observer = _instance.initializationData().observer.getConnectionObserver(initConnectionInfo(),
_endpoint,
newState,
_observer);
if(_observer != null)
{
_observer.attach();
}
else
{
_writeStreamPos = -1;
_readStreamPos = -1;
}
}
if(_observer != null && state == StateClosed && _exception != null)
{
if(!(_exception is CloseConnectionException ||
_exception is ForcedCloseConnectionException ||
_exception is ConnectionTimeoutException ||
_exception is CommunicatorDestroyedException ||
_exception is ObjectAdapterDeactivatedException ||
(_exception is ConnectionLostException && _state >= StateClosing)))
{
_observer.failed(_exception.ice_id());
}
}
}
_state = state;
System.Threading.Monitor.PulseAll(this);
if(_state == StateClosing && _dispatchCount == 0)
{
try
{
initiateShutdown();
}
catch(LocalException ex)
{
setState(StateClosed, ex);
}
}
}
public void updateObserver()
{
lock(this)
{
if(_state < StateNotValidated || _state > StateClosed)
{
return;
}
Debug.Assert(_instance.initializationData().observer != null);
_observer = _instance.initializationData().observer.getConnectionObserver(initConnectionInfo(),
_endpoint,
toConnectionState(_state),
_observer);
if(_observer != null)
{
_observer.attach();
}
else
{
_writeStreamPos = -1;
_readStreamPos = -1;
}
}
}