public
abstract
class
SocketFactory
extends Object
java.lang.Object | |
↳ | javax.net.SocketFactory |
Known Direct Subclasses |
Known Indirect Subclasses |
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:
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:
Protected constructors | |
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SocketFactory()
Creates a |
Public methods | |
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abstract
Socket
|
createSocket(String host, int port)
Creates a socket and connects it to the specified remote host at the specified remote port. |
abstract
Socket
|
createSocket(InetAddress host, int port)
Creates a socket and connects it to the specified port number at the specified address. |
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. |
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. |
Socket
|
createSocket()
Creates an unconnected socket. |
static
SocketFactory
|
getDefault()
Returns a copy of the environment's default socket factory. |
Inherited methods | |
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From
class
java.lang.Object
|
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.
If there is a security manager, its checkConnect
method is called with the host address and port
as its arguments. This could result in a SecurityException.
Parameters | |
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host |
String :
the server host name with which to connect, or
null for the loopback address. |
port |
int :
the server port |
Returns | |
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Socket |
the Socket |
Throws | |
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IOException |
if an I/O error occurs when creating the socket |
SecurityException |
if a security manager exists and its
checkConnect method doesn't allow the operation. |
UnknownHostException |
if the host is not known |
IllegalArgumentException |
if the port parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive. |
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.
If there is a security manager, its checkConnect
method is called with the host address and port
as its arguments. This could result in a SecurityException.
Parameters | |
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host |
InetAddress :
the server host |
port |
int :
the server port |
Returns | |
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Socket |
the Socket |
Throws | |
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IOException |
if an I/O error occurs when creating the socket |
SecurityException |
if a security manager exists and its
checkConnect method doesn't allow the operation. |
IllegalArgumentException |
if the port parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive. |
NullPointerException |
if host is null. |
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.
If there is a security manager, its checkConnect
method is called with the host address and port
as its arguments. This could result in a SecurityException.
Parameters | |
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address |
InetAddress :
the server network address |
port |
int :
the server port |
localAddress |
InetAddress :
the client network address |
localPort |
int :
the client port |
Returns | |
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Socket |
the Socket |
Throws | |
---|---|
IOException |
if an I/O error occurs when creating the socket |
SecurityException |
if a security manager exists and its
checkConnect method doesn't allow the operation. |
IllegalArgumentException |
if the port parameter or localPort parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive. |
NullPointerException |
if address is null. |
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.
If there is a security manager, its checkConnect
method is called with the host address and port
as its arguments. This could result in a SecurityException.
Parameters | |
---|---|
host |
String :
the server host name with which to connect, or
null for the loopback address. |
port |
int :
the server port |
localHost |
InetAddress :
the local address the socket is bound to |
localPort |
int :
the local port the socket is bound to |
Returns | |
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Socket |
the Socket |
Throws | |
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IOException |
if an I/O error occurs when creating the socket |
SecurityException |
if a security manager exists and its
checkConnect method doesn't allow the operation. |
UnknownHostException |
if the host is not known |
IllegalArgumentException |
if the port parameter or localPort parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive. |
Socket createSocket ()
Creates an unconnected socket.
Returns | |
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Socket |
the unconnected socket |
Throws | |
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IOException |
if the socket cannot be created |
SocketFactory getDefault ()
Returns a copy of the environment's default socket factory.
Returns | |
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SocketFactory |
the default SocketFactory
|