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Java Standard Edition (SE)


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Class SSLSocketFactory

  • public abstract class SSLSocketFactory
    extends SocketFactory
    SSLSocketFactorys create SSLSockets.
    See Also:
    • Constructor Detail

      • SSLSocketFactory

        public SSLSocketFactory()
        Constructor is used only by subclasses.
    • Method Detail

      • getDefault

        public static SocketFactory getDefault()
        Returns the default SSL socket factory.

        The first time this method is called, the security property "ssl.SocketFactory.provider" is examined. If it is non-null, a class by that name is loaded and instantiated. If that is successful and the object is an instance of SSLSocketFactory, it is made the default SSL socket factory.

        Otherwise, this method returns SSLContext.getDefault().getSocketFactory(). If that call fails, an inoperative factory is returned.

        the default SocketFactory
        See Also:
      • getDefaultCipherSuites

        public abstract String[] getDefaultCipherSuites()
        Returns the list of cipher suites which are enabled by default. Unless a different list is enabled, handshaking on an SSL connection will use one of these cipher suites. The minimum quality of service for these defaults requires confidentiality protection and server authentication (that is, no anonymous cipher suites).
        array of the cipher suites enabled by default
        See Also:
      • getSupportedCipherSuites

        public abstract String[] getSupportedCipherSuites()
        Returns the names of the cipher suites which could be enabled for use on an SSL connection. Normally, only a subset of these will actually be enabled by default, since this list may include cipher suites which do not meet quality of service requirements for those defaults. Such cipher suites are useful in specialized applications.
        an array of cipher suite names
        See Also:
      • createSocket

        public abstract Socket createSocket(Socket s,
                                            String host,
                                            int port,
                                            boolean autoClose)
                                     throws IOException
        Returns a socket layered over an existing socket connected to the named host, at the given port. This constructor can be used when tunneling SSL through a proxy or when negotiating the use of SSL over an existing socket. The host and port refer to the logical peer destination. This socket is configured using the socket options established for this factory.
        s - the existing socket
        host - the server host
        port - the server port
        autoClose - close the underlying socket when this socket is closed
        a socket connected to the specified host and port
        IOException - if an I/O error occurs when creating the socket
        NullPointerException - if the parameter s is null
      • createSocket

        public Socket createSocket(Socket s,
                                   InputStream consumed,
                                   boolean autoClose)
                            throws IOException
        Creates a server mode Socket layered over an existing connected socket, and is able to read data which has already been consumed/removed from the Socket's underlying InputStream.

        This method can be used by a server application that needs to observe the inbound data but still create valid SSL/TLS connections: for example, inspection of Server Name Indication (SNI) extensions (See section 3 of TLS Extensions (RFC6066)). Data that has been already removed from the underlying InputStream should be loaded into the consumed stream before this method is called, perhaps using a ByteArrayInputStream. When this Socket begins handshaking, it will read all of the data in consumed until it reaches EOF, then all further data is read from the underlying InputStream as usual.

        The returned socket is configured using the socket options established for this factory, and is set to use server mode when handshaking (see SSLSocket.setUseClientMode(boolean)).

        s - the existing socket
        consumed - the consumed inbound network data that has already been removed from the existing Socket InputStream. This parameter may be null if no data has been removed.
        autoClose - close the underlying socket when this socket is closed.
        the Socket compliant with the socket options established for this factory
        IOException - if an I/O error occurs when creating the socket
        UnsupportedOperationException - if the underlying provider does not implement the operation
        NullPointerException - if s is null


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