src/jexer/net/TelnetServerSocket.java

   1 /*
   2  * Jexer - Java Text User Interface
   3  *
   4  * The MIT License (MIT)
   5  *
   6  * Copyright (C) 2016 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 final class TelnetServerSocket extends ServerSocket {
  41
  42     // ServerSocket interface -------------------------------------------------
  43
  44     /**
  45      * Creates an unbound server socket.
  46      *
  47      * @throws IOException if an I/O error occurs
  48      */
  49     public TelnetServerSocket() throws IOException {
  50         super();
  51     }
  52
  53     /**
  54      * Creates a server socket, bound to the specified port.
  55      *
  56      * @param port the port number, or 0 to use a port number that is
  57      * automatically allocated.
  58      * @throws IOException if an I/O error occurs
  59      */
  60     public TelnetServerSocket(final int port) throws IOException {
  61         super(port);
  62     }
  63
  64     /**
  65      * Creates a server socket and binds it to the specified local port
  66      * number, with the specified backlog.
  67      *
  68      * @param port the port number, or 0 to use a port number that is
  69      * automatically allocated.
  70      * @param backlog requested maximum length of the queue of incoming
  71      * connections.
  72      * @throws IOException if an I/O error occurs
  73      */
  74     public TelnetServerSocket(final int port,
  75         final int backlog) throws IOException {
  76
  77         super(port, backlog);
  78     }
  79
  80     /**
  81      * Create a server with the specified port, listen backlog, and local IP
  82      * address to bind to.
  83      *
  84      * @param port the port number, or 0 to use a port number that is
  85      * automatically allocated.
  86      * @param backlog requested maximum length of the queue of incoming
  87      * connections.
  88      * @param bindAddr the local InetAddress the server will bind to
  89      * @throws IOException if an I/O error occurs
  90      */
  91     public TelnetServerSocket(final int port, final int backlog,
  92         final InetAddress bindAddr) throws IOException {
  93
  94         super(port, backlog, bindAddr);
  95     }
  96
  97     /**
  98      * Listens for a connection to be made to this socket and accepts it. The
  99      * method blocks until a connection is made.
 100      *
 101      * @return the new Socket
 102      * @throws IOException if an I/O error occurs
 103      */
 104     @Override
 105     public Socket accept() throws IOException {
 106         if (isClosed()) {
 107             throw new SocketException("Socket is closed");
 108         }
 109         if (!isBound()) {
 110             throw new SocketException("Socket is not bound");
 111         }
 112
 113         Socket socket = new TelnetSocket();
 114         implAccept(socket);
 115         return socket;
 116     }
 117
 118 }