javax.net
Class SocketFactory
- java.lang.Object
javax.net.SocketFactory
Direct known subclasses:
- public abstract class SocketFactory
- extends Object
Socket factories are a simple way to capture a variety of policies related to the sockets being constructed, producing such sockets in a way which does not require special configuration of the code which asks for the sockets:
- Due to polymorphism of both factories and sockets, different kinds of sockets can be used by the same application code just by passing it different kinds of factories.
- Factories can themselves be customized with parameters used in socket construction. So for example, factories could be customized to return sockets with different networking timeouts or security parameters already configured.
- The sockets returned to the application can be subclasses of java.net.Socket, so that they can directly expose new APIs for features such as compression, security, record marking, statistics collection, or firewall tunneling.
Factory classes are specified by environment-specific configuration mechanisms. For example, the getDefault method could return a factory that was appropriate for a particular user or applet, and a framework could use a factory customized to its own purposes.
Since:
1.4
See Also:
Constructor Summary
Modifier | Constructor and Description |
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SocketFactory()
Creates a
SocketFactory .
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Method Summary
Modifier and Type | Method and Description |
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createSocket()
Creates an unconnected socket.
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createSocket(InetAddress host,int port)
Creates a socket and connects it to the specified port number
at the specified address.
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createSocket(InetAddress address,int port,InetAddress localAddress,int localPort)
Creates a socket and connect it to the specified remote address
on the specified remote port.
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createSocket(String host,int port)
Creates a socket and connects it to the specified remote host
at the specified remote port.
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createSocket(String host,int port,InetAddress localHost,int localPort)
Creates a socket and connects it to the specified remote host
on the specified remote port.
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getDefault()
Returns a copy of the environment's default socket factory.
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail
SocketFactory
- protected SocketFactory()
Method Detail
getDefault
- public static SocketFactory getDefault( )
Returns a copy of the environment's default socket factory.
Returns:
the default
SocketFactory
createSocket
- public Socket createSocket()
- throws IOException
Creates an unconnected socket.
createSocket
- public abstract Socket createSocket( String host,
- int port)
- throws IOException
- UnknownHostException
Creates a socket and connects it to the specified remote host
at the specified remote port. This socket is configured using
the socket options established for this factory.
Parameters:
host
- the server host port
- the server port Returns:
the
Socket
Throws:
IOException
- if an I/O error occurs when creating the socket UnknownHostException
- if the host is not known See Also:
createSocket
- public abstract Socket createSocket( String host,
- int port,
- InetAddress localHost,
- int localPort)
- throws IOException
- UnknownHostException
Creates a socket and connects it to the specified remote host
on the specified remote port.
The socket will also be bound to the local address and port supplied.
This socket is configured using
the socket options established for this factory.
Parameters:
host
- the server host port
- the server port localHost
- the local address the socket is bound to localPort
- the local port the socket is bound to Returns:
the
Socket
Throws:
IOException
- if an I/O error occurs when creating the socket UnknownHostException
- if the host is not known See Also:
createSocket
- public abstract Socket createSocket( InetAddress host,
- int port)
- throws IOException
Creates a socket and connects it to the specified port number
at the specified address. This socket is configured using
the socket options established for this factory.
Parameters:
host
- the server host port
- the server port Returns:
the
Socket
Throws:
IOException
- if an I/O error occurs when creating the socket See Also:
createSocket
- public abstract Socket createSocket( InetAddress address,
- int port,
- InetAddress localAddress,
- int localPort)
- throws IOException
Creates a socket and connect it to the specified remote address
on the specified remote port. The socket will also be bound
to the local address and port suplied. The socket is configured using
the socket options established for this factory.
Parameters:
address
- the server network address port
- the server port localAddress
- the client network address localPort
- the client port Returns:
the
Socket
Throws:
IOException
- if an I/O error occurs when creating the socket See Also:
SocketFactory
.