QNetworkConfigurationManager Class
The QNetworkConfigurationManager class manages the network configurations provided by the system. More...
| Header: | #include <QNetworkConfigurationManager> |
| qmake: | QT += network |
| Since: | Qt 4.7 |
| Inherits: | QObject |
This class is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.
This class was introduced in Qt 4.7.
Public Types
| enum | Capability { CanStartAndStopInterfaces, DirectConnectionRouting, SystemSessionSupport, ApplicationLevelRoaming, ForcedRoaming, …, NetworkSessionRequired } |
Detailed Description
QNetworkConfigurationManager provides access to the network configurations known to the system and enables applications to detect the system capabilities (with regards to network sessions) at runtime.
A QNetworkConfiguration abstracts a set of configuration options describing how a network interface has to be configured to connect to a particular target network. QNetworkConfigurationManager maintains and updates the global list of QNetworkConfigurations. Applications can access and filter this list via allConfigurations(). If a new configuration is added or an existing one is removed or changed the configurationAdded(), configurationRemoved() and configurationChanged() signals are emitted respectively.
The defaultConfiguration() can be used when intending to immediately create a new network session without caring about the particular configuration. It returns a QNetworkConfiguration::Discovered configuration. If there are not any discovered ones an invalid configuration is returned.
Some configuration updates may require some time to perform updates. A WLAN scan is such an example. Unless the platform performs internal updates it may be required to manually trigger configuration updates via QNetworkConfigurationManager::updateConfigurations(). The completion of the update process is indicated by emitting the updateCompleted() signal. The update process ensures that every existing QNetworkConfiguration instance is updated. There is no need to ask for a renewed configuration list via allConfigurations().
See also QNetworkConfiguration.
Member Type Documentation
enum QNetworkConfigurationManager::Capability
Specifies the system capabilities of the bearer API. The possible values are:
| Constant | Value | Description |
|---|---|---|
QNetworkConfigurationManager::CanStartAndStopInterfaces | 0x00000001 | Network sessions and their underlying access points can be started and stopped. If this flag is not set QNetworkSession can only monitor but not influence the state of access points. On some platforms this feature may require elevated user permissions. This option is platform specific and may not always be available. |
QNetworkConfigurationManager::DirectConnectionRouting | 0x00000002 | Network sessions and their sockets can be bound to a particular network interface. Any packet that passes through the socket goes to the specified network interface and thus disregards standard routing table entries. This may be useful when two interfaces can reach overlapping IP ranges or an application has specific needs in regards to target networks. This option is platform specific and may not always be available. |
QNetworkConfigurationManager::SystemSessionSupport | 0x00000004 | If this flag is set the underlying platform ensures that a network interface is not shut down until the last network session has been closed(). This works across multiple processes. If the platform session support is missing this API can only ensure the above behavior for network sessions within the same process. In general mobile platforms have such support whereas most desktop platform lack this capability. |
QNetworkConfigurationManager::ApplicationLevelRoaming | 0x00000008 | The system gives applications control over the systems roaming behavior. Applications can initiate roaming (in case the current link is not suitable) and are consulted if the system has identified a more suitable access point. |
QNetworkConfigurationManager::ForcedRoaming | 0x00000010 | The system disconnects an existing access point and reconnects via a more suitable one. The application does not have any control over this process and has to reconnect its active sockets. |
QNetworkConfigurationManager::DataStatistics | 0x00000020 | If this flag is set QNetworkSession can provide statistics about transmitted and received data. |
QNetworkConfigurationManager::NetworkSessionRequired | 0x00000040 | If this flag is set the platform requires that a network session is created before network operations can be performed. |