The QKnxNetIpConnectionStateResponseProxy class provides the means to read a KNXnet/IP connection state response from the generic QKnxNetIpFrame class and to create a connection state response frame based on the information. More...
|qmake:||QT += knx|
|QKnxNetIpConnectionStateResponseProxy(const QKnxNetIpFrame &frame)|
A KNXnet/IP client reqularly sends a connection state request frame, QKnxNetIpConnectionStateRequestProxy, 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.
Note: When using QKnxNetIpConnectionStateResponseProxy, 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 connection state response information sent by a KNXnet/IP server:
auto netIpFrame = QKnxNetIpFrame::fromBytes(...); const QKnxNetIpConnectionStateResponseProxy proxy(netIpFrame); if (!proxy.isValid()) return; auto chanId = proxy.channelId(); auto status = proxy.status();
Member Function Documentation
QKnxNetIpConnectionStateResponseProxy::QKnxNetIpConnectionStateResponseProxy(const QKnxNetIpFrame &frame)
Constructs a proxy object to read the connection state response information carried by the specified KNXnet/IP frame frame.
[static] QKnxNetIpConnectionStateResponseProxy::Builder QKnxNetIpConnectionStateResponseProxy::builder()
Returns a builder object to create a KNXnet/IP connection state response frame.
quint8 QKnxNetIpConnectionStateResponseProxy::channelId() const
Returns the ID of the communication channel prepared by the KNXnet/IP server.
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().
Returns the state of the connection channel established to a KNXnet/IP server.
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