Method WriteMsg

cpp/src/Driver.cpp:1227–1372

----------------------------------------------------------------------------- Transmit the current message to the Z-Wave controller -----------------------------------------------------------------------------

// Transmit the current message to the Z-Wave controller
//-----------------------------------------------------------------------------
bool Driver::WriteMsg
(
		string const &msg
)
{
	if( !m_currentMsg )
	{
		Log::Write( LogLevel_Detail, GetNodeNumber( m_currentMsg ), "WriteMsg %s m_currentMsg=%08x", msg.c_str(), m_currentMsg );
		// We try not to hang when this happenes
		m_expectedCallbackId = 0;
		m_expectedCommandClassId = 0;
		m_expectedNodeId = 0;
		m_expectedReply = 0;
		m_waitingForAck = false;
		return false;
	}
	/* if this is called with m_nonceReportSent > 0 it means that we have
	 * tried to send a NONCE report and it timed out or was NAK'd
	 *
	 */
	uint8 attempts;
	uint8 nodeId;
	if (m_nonceReportSent > 0) {
		attempts = m_nonceReportSentAttempt++;
		nodeId = m_nonceReportSent;
	} else {
		attempts = m_currentMsg->GetSendAttempts();
		nodeId = m_currentMsg->GetTargetNodeId();
	}
	LockGuard LG(m_nodeMutex);
	Node* node = GetNode( nodeId );
	if( attempts >= m_currentMsg->GetMaxSendAttempts() ||
			(node != NULL && !node->IsNodeAlive() && !m_currentMsg->IsNoOperation() ) )
	{
		if( node != NULL && !node->IsNodeAlive() )
		{
			Log::Write( LogLevel_Error, nodeId, "ERROR: Dropping command because node is presumed dead" );
		}
		else
		{
			// That's it - already tried to send GetMaxSendAttempt() times.
			Log::Write( LogLevel_Error, nodeId, "ERROR: Dropping command, expected response not received after %d attempt(s)", m_currentMsg->GetMaxSendAttempts() );
		}
		if( m_currentControllerCommand != NULL )
		{
			/* its a ControllerCommand that is failed */
			UpdateControllerState( ControllerState_Error, ControllerError_Failed);

		}

		RemoveCurrentMsg();
		m_dropped++;
		return false;
	}

	if (( attempts != 0) && (m_nonceReportSent == 0))
	{
		// this is not the first attempt, so increment the callback id before sending