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java.lang.Objectcom.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.network.QNetworkProxy
public class QNetworkProxy
The QNetworkProxy class provides a network layer proxy.
QNetworkProxy provides the method for configuring network layer proxy support to the Qt network classes. The currently supported classes are QAbstractSocket, QTcpSocket, QUdpSocket, QTcpServer, QHttp and QFtp. The proxy support is designed to be as transparent as possible. This means that existing network-enabled applications that you have written should automatically support network proxy using the following code.
QNetworkProxy proxy; proxy.setType(QNetworkProxy::Socks5Proxy); proxy.setHostName("proxy.example.com"); proxy.setPort(1080); proxy.setUser("username"); proxy.setPassword("password"); QNetworkProxy::setApplicationProxy(proxy);
An alternative to setting an application wide proxy is to specify the proxy for individual sockets using QAbstractSocket::setProxy() and QTcpServer::setProxy(). In this way, it is possible to disable the use of a proxy for specific sockets using the following code:
serverSocket->setProxy(QNetworkProxy::NoProxy);
Network proxy is not used if the address used in connectToHost(), bind() or listen() is equivalent to QHostAddress::LocalHost or QHostAddress::LocalHostIPv6.
Each type of proxy support has certain restrictions associated with it. You should read the ProxyType documentation carefully before selecting a proxy type to use.
The SOCKS5 support in Qt 4 is based on RFC 1928 and RFC 1929. The supported authentication methods are no authentication and username/password authentication. Both IPv4 and IPv6 are supported, but domain name resolution via the SOCKS server is not supported; i.e. all domain names are resolved locally. There are several things to remember when using SOCKS5 with QUdpSocket and QTcpServer:
With QUdpSocket, a call to bind() may fail with a timeout error. If a port number other than 0 is passed to bind(), it is not guaranteed that it is the specified port that will be used. Use localPort() and localAddress() to get the actual address and port number in use. Because proxied UDP goes through two UDP connections, it is more likely that packets will be dropped.
With QTcpServer a call to listen() may fail with a timeout error. If a port number other than 0 is passed to listen(), then it is not guaranteed that it is the specified port that will be used. Use serverPort() and serverAddress() to get the actual address and port used to listen for connections. SOCKS5 only supports one accepted connection per call to listen(), and each call is likely to result in a different serverPort() being used.
Nested Class Summary | |
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static class |
QNetworkProxy.ProxyType
This enum describes the types of network proxying provided in Qt. |
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter |
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QSignalEmitter.Signal0, QSignalEmitter.Signal1<A>, QSignalEmitter.Signal2<A,B>, QSignalEmitter.Signal3<A,B,C>, QSignalEmitter.Signal4<A,B,C,D>, QSignalEmitter.Signal5<A,B,C,D,E>, QSignalEmitter.Signal6<A,B,C,D,E,F>, QSignalEmitter.Signal7<A,B,C,D,E,F,G>, QSignalEmitter.Signal8<A,B,C,D,E,F,G,H>, QSignalEmitter.Signal9<A,B,C,D,E,F,G,H,I> |
Constructor Summary | |
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QNetworkProxy()
Constructs a QNetworkProxy with DefaultProxy type; the proxy type is determined by applicationProxy, which defaults to NoProxy. |
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QNetworkProxy(QNetworkProxy.ProxyType type,
java.lang.String host,
int port)
This is an overloaded constructor provided for convenience. |
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QNetworkProxy(QNetworkProxy.ProxyType type,
java.lang.String host,
int port,
java.lang.String username)
This is an overloaded constructor provided for convenience. |
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QNetworkProxy(QNetworkProxy.ProxyType type,
java.lang.String host,
int port,
java.lang.String username,
java.lang.String password)
Constructs a QNetworkProxy with type, hostName, port, user and password. |
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QNetworkProxy(QNetworkProxy other)
Constructs a copy of other. |
Method Summary | |
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static QNetworkProxy |
applicationProxy()
Returns the application level network proxying. |
static QNetworkProxy |
fromNativePointer(QNativePointer nativePointer)
This function returns the QNetworkProxy instance pointed to by nativePointer |
java.lang.String |
hostName()
Returns the host name of the proxy host. |
static QNativePointer |
nativePointerArray(QNetworkProxy[] array)
This function returns a QNativePointer that is pointing to the specified QNetworkProxy array. |
java.lang.String |
password()
Returns the password used for authentication. |
int |
port()
Returns the port of this proxy. |
static void |
setApplicationProxy(QNetworkProxy proxy)
Sets the application level network proxying to be proxy. |
void |
setHostName(java.lang.String hostName)
Sets the host name of the proxy host to be hostName. |
void |
setPassword(java.lang.String password)
Sets the password for proxy authentication to be password. |
void |
setPort(int port)
Sets the port of the proxy host to be port. |
void |
setType(QNetworkProxy.ProxyType type)
Sets the proxy type for this instance to be type. |
void |
setUser(java.lang.String userName)
Sets the user name for proxy authentication to be userName. |
QNetworkProxy.ProxyType |
type()
Returns the proxy type for this instance. |
java.lang.String |
user()
Returns the user name used for authentication. |
Methods inherited from class com.trolltech.qt.QtJambiObject |
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dispose, disposed, 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 java.lang.Object |
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clone, equals, 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 QNetworkProxy()
Constructs a QNetworkProxy with DefaultProxy type; the proxy type is determined by applicationProxy, which defaults to NoProxy.
public QNetworkProxy(QNetworkProxy other)
Constructs a copy of other.
public QNetworkProxy(QNetworkProxy.ProxyType type, java.lang.String host, int port)
public QNetworkProxy(QNetworkProxy.ProxyType type, java.lang.String host, int port, java.lang.String username)
public QNetworkProxy(QNetworkProxy.ProxyType type, java.lang.String host, int port, java.lang.String username, java.lang.String password)
Method Detail |
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public final java.lang.String hostName()
Returns the host name of the proxy host.
public final java.lang.String password()
Returns the password used for authentication.
public final void setHostName(java.lang.String hostName)
Sets the host name of the proxy host to be hostName.
public final void setPassword(java.lang.String password)
Sets the password for proxy authentication to be password.
public final void setType(QNetworkProxy.ProxyType type)
Sets the proxy type for this instance to be type.
public final void setUser(java.lang.String userName)
Sets the user name for proxy authentication to be userName.
public final QNetworkProxy.ProxyType type()
Returns the proxy type for this instance.
public final java.lang.String user()
Returns the user name used for authentication.
public static QNetworkProxy applicationProxy()
Returns the application level network proxying.
If a QAbstractSocket or QTcpSocket has the QNetworkProxy::DefaultProxy type, then the QNetworkProxy returned by this function is used.
public static void setApplicationProxy(QNetworkProxy proxy)
Sets the application level network proxying to be proxy.
If a QAbstractSocket or QTcpSocket has the QNetworkProxy::DefaultProxy type, then the QNetworkProxy set with this function is used.
public static QNetworkProxy fromNativePointer(QNativePointer nativePointer)
nativePointer
- the QNativePointer of which object should be returned.public static QNativePointer nativePointerArray(QNetworkProxy[] array)
array
- the array that the returned pointer will point to.
public final void setPort(int port)
public final int port()
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