public abstract class SocketFactory extends Object
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.
ServerSocketFactory
protected SocketFactory()
Creates a SocketFactory
.
public static SocketFactory getDefault()
Returns a copy of the environment's default socket factory.
SocketFactory
public Socket createSocket() throws IOException
Creates an unconnected socket.
IOException
- if the socket cannot be createdSocket.connect(java.net.SocketAddress)
, Socket.connect(java.net.SocketAddress, int)
, Socket.Socket()
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.
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.
host
- the server host name with which to connect, or null
for the loopback address.port
- the server portSocket
IOException
- if an I/O error occurs when creating the socketSecurityException
- if a security manager exists and its checkConnect
method doesn't allow the operation.UnknownHostException
- if the host is not knownIllegalArgumentException
- if the port parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive.SecurityManager.checkConnect(java.lang.String, int)
, Socket.Socket(String, int)
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.
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.
host
- the server host name with which to connect, or null
for the loopback address.port
- the server portlocalHost
- the local address the socket is bound tolocalPort
- the local port the socket is bound toSocket
IOException
- if an I/O error occurs when creating the socketSecurityException
- if a security manager exists and its checkConnect
method doesn't allow the operation.UnknownHostException
- if the host is not knownIllegalArgumentException
- if the port parameter or localPort parameter is outside the specified range of valid port values, which is between 0 and 65535, inclusive.SecurityManager.checkConnect(java.lang.String, int)
, Socket.Socket(String, int, java.net.InetAddress, int)
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.
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.
host
- the server hostport
- the server portSocket
IOException
- if an I/O error occurs when creating the socketSecurityException
- 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.SecurityManager.checkConnect(java.lang.String, int)
, Socket.Socket(java.net.InetAddress, int)
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.
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.
address
- the server network addressport
- the server portlocalAddress
- the client network addresslocalPort
- the client portSocket
IOException
- if an I/O error occurs when creating the socketSecurityException
- 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.SecurityManager.checkConnect(java.lang.String, int)
, Socket.Socket(java.net.InetAddress, int,
java.net.InetAddress, int)
© 1993–2017, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.