Builder Classclass QKnxNetIpConnectionStateRequestProxy::Builder
The QKnxNetIpConnectionStateRequestProxy::Builder class provides the means to create a KNXnet/IP connection state request frame. More...
|Builder &||setChannelId(quint8 channelId)|
|Builder &||setControlEndpoint(const QKnxNetIpHpai &hpai)|
A KNXnet/IP client sends a connection state request frame regularly to the KNXnet/IP server's control endpoint to check the state of a connection established to the server. The server responds immediately with a connection state response frame, QKnxNetIpConnectionStateResponseProxy.
In most programs, this class will not be used directly. Instead, the QKnxNetIpTunnel or QKnxNetIpDeviceManagement class is used to establish a functional connection to a KNXnet/IP server.
The common way to create a connection state request is:
auto hpai = QKnxNetIpHpaiProxy::builder().create(); auto netIpFrame = QKnxNetIpConnectionStateRequestProxy::builder() .setChannelId(255) .setControlEndpoint(hpai) .create();
If the KNXnet/IP client does not receive the connection state response within a timeout, or the status of the received response indicates that errors occurred, the client repeats the connection state request three times. It then terminates the connection by sending a disconnect request, QKnxNetIpDisconnectRequestProxy, to the server's control endpoint.
Member Function Documentation
QKnxNetIpFrame Builder::create() const
Creates and returns a KNXnet/IP connection state request frame.
Note: The returned frame may be invalid depending on the values used during setup.
See also isValid().
Builder &Builder::setChannelId(quint8 channelId)
Sets the ID of the communication channel to channelId and returns a reference to the builder.
Builder &Builder::setControlEndpoint(const QKnxNetIpHpai &hpai)
Sets the control endpoint of the KNXnet/IP client to hpai and returns a reference to the builder.
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