src/jexer/net/TelnetServerSocket.java

   1 /*
   2  * Jexer - Java Text User Interface
   3  *
   4  * The MIT License (MIT)
   5  *
   6  * Copyright (C) 2019 Kevin Lamonte
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24  * DEALINGS IN THE SOFTWARE.
  25  *
  26  * @author Kevin Lamonte [kevin.lamonte@gmail.com]
  27  * @version 1
  28  */
  29 package jexer.net;
  30
  31 import java.io.IOException;
  32 import java.net.InetAddress;
  33 import java.net.ServerSocket;
  34 import java.net.Socket;
  35 import java.net.SocketException;
  36
  37 /**
  38  * This class provides a ServerSocket that return TelnetSocket's in accept().
  39  */
  40 public class TelnetServerSocket extends ServerSocket {
  41
  42     // ------------------------------------------------------------------------
  43     // Variables --------------------------------------------------------------
  44     // ------------------------------------------------------------------------
  45
  46
  47     // ------------------------------------------------------------------------
  48     // Constructors -----------------------------------------------------------
  49     // ------------------------------------------------------------------------
  50
  51     /**
  52      * Creates an unbound server socket.
  53      *
  54      * @throws IOException if an I/O error occurs
  55      */
  56     public TelnetServerSocket() throws IOException {
  57         super();
  58     }
  59
  60     /**
  61      * Creates a server socket, bound to the specified port.
  62      *
  63      * @param port the port number, or 0 to use a port number that is
  64      * automatically allocated.
  65      * @throws IOException if an I/O error occurs
  66      */
  67     public TelnetServerSocket(final int port) throws IOException {
  68         super(port);
  69     }
  70
  71     /**
  72      * Creates a server socket and binds it to the specified local port
  73      * number, with the specified backlog.
  74      *
  75      * @param port the port number, or 0 to use a port number that is
  76      * automatically allocated.
  77      * @param backlog requested maximum length of the queue of incoming
  78      * connections.
  79      * @throws IOException if an I/O error occurs
  80      */
  81     public TelnetServerSocket(final int port,
  82         final int backlog) throws IOException {
  83
  84         super(port, backlog);
  85     }
  86
  87     /**
  88      * Create a server with the specified port, listen backlog, and local IP
  89      * address to bind to.
  90      *
  91      * @param port the port number, or 0 to use a port number that is
  92      * automatically allocated.
  93      * @param backlog requested maximum length of the queue of incoming
  94      * connections.
  95      * @param bindAddr the local InetAddress the server will bind to
  96      * @throws IOException if an I/O error occurs
  97      */
  98     public TelnetServerSocket(final int port, final int backlog,
  99         final InetAddress bindAddr) throws IOException {
 100
 101         super(port, backlog, bindAddr);
 102     }
 103
 104     // ------------------------------------------------------------------------
 105     // ServerSocket -----------------------------------------------------------
 106     // ------------------------------------------------------------------------
 107
 108     /**
 109      * Listens for a connection to be made to this socket and accepts it. The
 110      * method blocks until a connection is made.
 111      *
 112      * @return the new Socket
 113      * @throws IOException if an I/O error occurs
 114      */
 115     @Override
 116     public Socket accept() throws IOException {
 117         if (isClosed()) {
 118             throw new SocketException("Socket is closed");
 119         }
 120         if (!isBound()) {
 121             throw new SocketException("Socket is not bound");
 122         }
 123
 124         Socket socket = new TelnetSocket();
 125         implAccept(socket);
 126         return socket;
 127     }
 128
 129 }