The QKnxNetIpDisconnectRequestProxy class provides the means to read a KNXnet/IP disconnection request from the generic QKnxNetIpFrame class and to create a disconnection request frame based on the information. More...
|qmake:||QT += knx|
|QKnxNetIpDisconnectRequestProxy(const QKnxNetIpFrame &frame)|
The QKnxNetIpDisconnectRequestProxy class provides the means to read a KNXnet/IP disconnection request from the generic QKnxNetIpFrame class and to create a disconnection request frame based on the information.
A KNXnet/IP client terminates a data channel connection to a KNXnet/IP server by sending a disconnection request to the server's control endpoint. The client should try to disconnect gracefully, even under error conditions.
The server may disconnect from the client by sending a disconnection request due to internal problems or reception of invalid data packets. However, it is recommended to let the client terminate the connection.
The KNXnet/IP device receiving the disconnection request acknowledges the operation with a KNXnet/IP disconnection response frame, QKnxNetIpDisconnectResponseProxy, which signals the final termination of a communication channel.
Note: When using QKnxNetIpDisconnectRequestProxy, care must be taken to ensure that the referenced KNXnet/IP frame outlives the proxy on all code paths, lest the proxy ends up referencing deleted data.
The following code sample illustrates how to read the disconnection request information sent by a KNXnet/IP client:
See also builder().
Member Function Documentation
QKnxNetIpDisconnectRequestProxy::QKnxNetIpDisconnectRequestProxy(const QKnxNetIpFrame &frame)
Constructs a proxy object to read the disconnection request information carried by the specified KNXnet/IP frame frame.
[static] QKnxNetIpDisconnectRequestProxy::Builder QKnxNetIpDisconnectRequestProxy::builder()
Returns a builder object to create a KNXnet/IP disconnection request frame.
quint8 QKnxNetIpDisconnectRequestProxy::channelId() const
Returns the ID of the communication channel between the KNXnet/IP client and server.
QKnxNetIpHpai QKnxNetIpDisconnectRequestProxy::controlEndpoint() const
Returns the control endpoint of the KNXnet/IP device sending the disconnection request.
true if the frame contains initialized values and is in itself valid, otherwise returns
false. A valid KNXnet/IP frame consists of at least a valid header and a size in bytes corresponding to the total size of the KNXnet/IP frame header.
See also QKnxNetIpFrameHeader::totalSize().
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