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java.lang.Objectcom.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.network.QNetworkProxyFactory
public abstract class QNetworkProxyFactory
The QNetworkProxyFactory class provides fine-grained proxy selection. QNetworkProxyFactory is an extension to QNetworkProxy
, allowing applications to have a more fine-grained control over which proxy servers are used, depending on the socket requesting the proxy. This allows an application to apply different settings, according to the protocol or destination hostname, for instance.
QNetworkProxyFactory can be set globally for an application, in which case it will override any global proxies set with QNetworkProxy::setApplicationProxy()
. If set globally, any sockets created with Qt will query the factory to determine the proxy to be used.
A factory can also be set in certain frameworks that support multiple connections, such as QNetworkAccessManager
. When set on such object, the factory will be queried for sockets created by that framework only.
Nested Class Summary |
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Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
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com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal |
Field Summary |
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Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
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currentSender |
Constructor Summary | |
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QNetworkProxyFactory()
Creates a QNetworkProxyFactory object. |
Method Summary | |
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static java.util.List |
proxyForQuery(QNetworkProxyQuery query)
This function examines takes the query request, query, examines the details of the type of socket or request and returns a list of QNetworkProxy objects that indicate the proxy servers to be used, in order of preference. |
java.util.List |
queryProxy()
This function examines takes the query request, query, examines the details of the type of socket or request and returns a list of QNetworkProxy objects that indicate the proxy servers to be used, in order of preference. |
abstract java.util.List |
queryProxy(QNetworkProxyQuery query)
This function examines takes the query request, query, examines the details of the type of socket or request and returns a list of QNetworkProxy objects that indicate the proxy servers to be used, in order of preference. |
static void |
setApplicationProxyFactory(QNetworkProxyFactory factory)
Sets the application-wide proxy factory to be factory. |
static java.util.List |
systemProxyForQuery()
This function examines takes the query request, query, examines the details of the type of socket or request and returns a list of QNetworkProxy objects that indicate the proxy servers to be used, in order of preference. |
static java.util.List |
systemProxyForQuery(QNetworkProxyQuery query)
This function examines takes the query request, query, examines the details of the type of socket or request and returns a list of QNetworkProxy objects that indicate the proxy servers to be used, in order of preference. |
Methods inherited from class com.trolltech.qt.QtJambiObject |
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dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr |
Methods inherited from class com.trolltech.qt.QSignalEmitter |
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blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread |
Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
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__qt_signalInitialization |
Methods inherited from class java.lang.Object |
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clone, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.trolltech.qt.QtJambiInterface |
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disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership |
Constructor Detail |
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public QNetworkProxyFactory()
Since QNetworkProxyFactory is an abstract class, you cannot create objects of type QNetworkProxyFactory directly.
Method Detail |
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public final java.util.List queryProxy()
QNetworkProxy
objects that indicate the proxy servers to be used, in order of preference. When reimplementing this class, take care to return at least one element.
If you cannot determine a better proxy alternative, use QNetworkProxy::DefaultProxy
, which tells the code querying for a proxy to use a higher alternative. For example, if this factory is set to a QNetworkAccessManager
object, DefaultProxy will tell it to query the application-level proxy settings.
If this factory is set as the application proxy factory, DefaultProxy and NoProxy will have the same meaning.
public abstract java.util.List queryProxy(QNetworkProxyQuery query)
QNetworkProxy
objects that indicate the proxy servers to be used, in order of preference. When reimplementing this class, take care to return at least one element.
If you cannot determine a better proxy alternative, use QNetworkProxy::DefaultProxy
, which tells the code querying for a proxy to use a higher alternative. For example, if this factory is set to a QNetworkAccessManager
object, DefaultProxy will tell it to query the application-level proxy settings.
If this factory is set as the application proxy factory, DefaultProxy and NoProxy will have the same meaning.
public static java.util.List proxyForQuery(QNetworkProxyQuery query)
QNetworkProxy
objects that indicate the proxy servers to be used, in order of preference.
public static void setApplicationProxyFactory(QNetworkProxyFactory factory)
The application-wide proxy is used as a last-resort when all other proxy selection requests returned QNetworkProxy::DefaultProxy
. For example, QTcpSocket
objects can have a proxy set with QTcpSocket::setProxy, but if none is set, the proxy factory class set with this function will be queried.
If you set a proxy factory with this function, any application level proxies set with QNetworkProxy::setApplicationProxy will be overridden.
QNetworkProxy::setApplicationProxy()
, QAbstractSocket::proxy()
, and QAbstractSocket::setProxy()
.
public static java.util.List systemProxyForQuery()
QNetworkProxy
objects that indicate the proxy servers to be used, in order of preference. This function can be used to determine the platform-specific proxy settings. This function will use the libraries provided by the operating system to determine the proxy for a given connection, if such libraries exist. If they don't, this function will just return a QNetworkProxy
of type QNetworkProxy::NoProxy
.
On Windows, this function will use the WinHTTP DLL functions. Despite its name, Microsoft suggests using it for all applications that require network connections, not just HTTP. This will respect the proxy settings set on the registry with the proxycfg.exe tool. If those settings are not found, this function will attempt to obtain Internet Explorer's settings and use them.
On MacOS X, this function will obtain the proxy settings using the SystemConfiguration framework from Apple. It will apply the FTP, HTTP and HTTPS proxy configurations for queries that contain the protocol tag "ftp", "http" and "https", respectively. If the SOCKS proxy is enabled in that configuration, this function will use the SOCKS server for all queries. If SOCKS isn't enabled, it will use the HTTPS proxy for all TcpSocket and UrlRequest queries.
On other systems, there is no standardised method of obtaining the system proxy configuration. This function may be improved in future versions to support those systems. On MacOS X, this function will ignore the Proxy Auto Configuration settings, since it cannot execute the associated ECMAScript code.
Limitations
These are the limitations for the current version of this function. Future versions of Qt may lift some of the limitations listed here.
public static java.util.List systemProxyForQuery(QNetworkProxyQuery query)
QNetworkProxy
objects that indicate the proxy servers to be used, in order of preference. This function can be used to determine the platform-specific proxy settings. This function will use the libraries provided by the operating system to determine the proxy for a given connection, if such libraries exist. If they don't, this function will just return a QNetworkProxy
of type QNetworkProxy::NoProxy
.
On Windows, this function will use the WinHTTP DLL functions. Despite its name, Microsoft suggests using it for all applications that require network connections, not just HTTP. This will respect the proxy settings set on the registry with the proxycfg.exe tool. If those settings are not found, this function will attempt to obtain Internet Explorer's settings and use them.
On MacOS X, this function will obtain the proxy settings using the SystemConfiguration framework from Apple. It will apply the FTP, HTTP and HTTPS proxy configurations for queries that contain the protocol tag "ftp", "http" and "https", respectively. If the SOCKS proxy is enabled in that configuration, this function will use the SOCKS server for all queries. If SOCKS isn't enabled, it will use the HTTPS proxy for all TcpSocket and UrlRequest queries.
On other systems, there is no standardised method of obtaining the system proxy configuration. This function may be improved in future versions to support those systems. On MacOS X, this function will ignore the Proxy Auto Configuration settings, since it cannot execute the associated ECMAScript code.
Limitations
These are the limitations for the current version of this function. Future versions of Qt may lift some of the limitations listed here.
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