| java.lang.Object | |
| ↳ | javax.net.SocketFactory |
 Known Direct Subclasses
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Known Indirect Subclasses
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Class Overview
This class creates sockets. It may be subclassed by other factories, which create particular subclasses of sockets and thus provide a general framework for the addition of public socket-level functionality.
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.
See Also
Summary
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Creates a
SocketFactory. | |||||||||||
| Public Methods | |||||||||||
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Creates a socket and connects it to the specified remote host
on the specified remote port.
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Creates a socket and connect it to the specified remote address
on the specified remote port.
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Creates a socket and connects it to the specified port number
at the specified address.
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Creates a socket and connects it to the specified remote host
at the specified remote port.
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Creates an unconnected socket.
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Returns a copy of the environment's default socket factory.
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Inherited Methods | |||||||||||
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From class
java.lang.Object
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Protected Constructors
protected SocketFactory ()
Creates a SocketFactory.
Public Methods
public abstract Socket 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. 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 |
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| UnknownHostException | if the host is not known |
public abstract Socket 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. 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 |
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public abstract Socket createSocket (InetAddress host, int port)
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 |
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| port | the server port |
Returns
- the
Socket
Throws
| IOException | if an I/O error occurs when creating the socket |
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See Also
public abstract Socket createSocket (String host, int port)
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 |
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| UnknownHostException | if the host is not known |
See Also
public Socket createSocket ()
Creates an unconnected socket.
Returns
- the unconnected socket
Throws
| IOException | if the socket cannot be created |
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public static SocketFactory getDefault ()
Returns a copy of the environment's default socket factory.
Returns
- the default
SocketFactory