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SocketFactory


javax.net

Class SocketFactory

  • Direct Known Subclasses:
    SSLSocketFactory


    public abstract class SocketFactory
    extends Object
    This abstract class defines methods to create sockets. It can be subclassed to create specific socket types with additional socket-level functionality.
    • Constructor Detail

      • SocketFactory

        protected SocketFactory()
        Creates a new SocketFactory instance.
    • Method Detail

      • getDefault

        public static SocketFactory getDefault()
        Gets the default socket factory of the system which can be used to create new sockets without creating a subclass of this factory.
        Returns:
        the system default socket factory.
      • createSocket

        public Socket createSocket()
                            throws IOException
        Creates a new socket which is not connected to any remote host. This method has to be overridden by a subclass otherwise a SocketException is thrown.
        Returns:
        the created unconnected socket.
        Throws:
        IOException - if an error occurs while creating a new socket.
      • createSocket

        public abstract Socket createSocket(String host,
                          int port)
                                     throws IOException,
                                            UnknownHostException
        Creates a new socket which is connected to the remote host specified by the parameters host and port. The socket is bound to any available local address and port.
        Parameters:
        host - the remote host address the socket has to be connected to.
        port - the port number of the remote host at which the socket is connected.
        Returns:
        the created connected socket.
        Throws:
        IOException - if an error occurs while creating a new socket.
        UnknownHostException - if the specified host is unknown or the IP address could not be resolved.
      • createSocket

        public abstract Socket createSocket(String host,
                          int port,
                          InetAddress localHost,
                          int localPort)
                                     throws IOException,
                                            UnknownHostException
        Creates a new socket which is connected to the remote host specified by the parameters host and port. The socket is bound to the local network interface specified by the InetAddress localHost on port localPort.
        Parameters:
        host - the remote host address the socket has to be connected to.
        port - the port number of the remote host at which the socket is connected.
        localHost - the local host address the socket is bound to.
        localPort - the port number of the local host at which the socket is bound.
        Returns:
        the created connected socket.
        Throws:
        IOException - if an error occurs while creating a new socket.
        UnknownHostException - if the specified host is unknown or the IP address could not be resolved.
      • createSocket

        public abstract Socket createSocket(InetAddress host,
                          int port)
                                     throws IOException
        Creates a new socket which is connected to the remote host specified by the InetAddress host. The socket is bound to any available local address and port.
        Parameters:
        host - the host address the socket has to be connected to.
        port - the port number of the remote host at which the socket is connected.
        Returns:
        the created connected socket.
        Throws:
        IOException - if an error occurs while creating a new socket.
      • createSocket

        public abstract Socket createSocket(InetAddress address,
                          int port,
                          InetAddress localAddress,
                          int localPort)
                                     throws IOException
        Creates a new socket which is connected to the remote host specified by the InetAddress address. The socket is bound to the local network interface specified by the InetAddress localHost on port localPort.
        Parameters:
        address - the remote host address the socket has to be connected to.
        port - the port number of the remote host at which the socket is connected.
        localAddress - the local host address the socket is bound to.
        localPort - the port number of the local host at which the socket is bound.
        Returns:
        the created connected socket.
        Throws:
        IOException - if an error occurs while creating a new socket.


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