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javax.net

Class SocketFactory

Inhaltsverzeichnis
  • Direct Known Subclasses:
    SSLSocketFactory

    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:

    • 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:
    ServerSocketFactory

    • Constructor Detail

      • SocketFactory

        protected SocketFactory()
        Creates a SocketFactory.

    • Method Detail

      • getDefault

        public static SocketFactory getDefault()
        Returns a copy of the environment's default socket factory.
        Returns:
        the default SocketFactory

      • 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.

        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 - the server host name with which to connect, or null for the loopback address.
        port - the server port
        Returns:
        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.
        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.
        See Also:
        SecurityManager.checkConnect(java.lang.String, int), Socket.Socket(String, int)

      • 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.

        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 - the server host name with which to connect, or null for the loopback address.
        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
        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.
        See Also:
        SecurityManager.checkConnect(java.lang.String, int), Socket.Socket(String, int, java.net.InetAddress, int)

      • 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.

        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 - the server host
        port - the server port
        Returns:
        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 is outside the specified range of valid port values, which is between 0 and 65535, inclusive.
        NullPointerException - if host is null.
        See Also:
        SecurityManager.checkConnect(java.lang.String, int), Socket.Socket(java.net.InetAddress, int)

      • 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.

        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:
        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
        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.
        See Also:
        SecurityManager.checkConnect(java.lang.String, int), Socket.Socket(java.net.InetAddress, int, java.net.InetAddress, int)

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Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-javax/net/socketfactory.html

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