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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 15 | arune | 1 | /* |
| 2 | * TcpServer.java |
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| 3 | * |
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| 4 | * Created on den 25 augusti 2003, 22:50 |
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| 5 | */ |
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| 6 | package Macbeth.Net; |
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| 7 | |||
| 8 | import java.net.*; |
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| 9 | import java.io.*; |
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| 10 | import java.util.*; |
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| 11 | |||
| 12 | /** |
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| 13 | * Multithreaded multi-client TCP Server. |
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| 14 | * @author Jimmy |
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| 15 | */ |
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| 16 | public class TcpServer extends Thread { |
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| 17 | private ServerSocket serverSocket; |
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| 18 | private boolean listening; |
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| 19 | private int port; |
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| 20 | private LinkedList serverThreads; |
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| 21 | private ServerDataHandler dataHandler; |
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| 22 | private boolean tcpNoDelay; |
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| 23 | |||
| 24 | /** |
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| 25 | * Creates a new instance of TcpServer. |
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| 26 | * @param port The port on which the server should listen for connections. |
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| 27 | * @param datahandler The data handler that shall be invoked when incoming data needs to be handled. |
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| 28 | */ |
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| 29 | public TcpServer(int port, ServerDataHandler datahandler) { |
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| 30 | super("TcpServer"); |
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| 31 | serverSocket = null; |
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| 32 | listening = false; |
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| 33 | this.port = port; |
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| 34 | dataHandler = datahandler; |
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| 35 | serverThreads = new LinkedList(); |
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| 36 | tcpNoDelay = false; |
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| 37 | } |
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| 38 | |||
| 39 | /** |
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| 40 | * Starts listening for incoming connections. |
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| 41 | */ |
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| 42 | public void startServer() { |
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| 43 | listening = true; |
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| 44 | start(); |
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| 45 | } |
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| 46 | |||
| 47 | /** |
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| 48 | * Stops listening for incoming connections. |
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| 49 | */ |
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| 50 | public void stopServer() { |
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| 51 | listening = false; |
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| 52 | //stop all server threads |
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| 53 | while (serverThreads.size()>0) { |
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| 54 | TcpServerThread t = (TcpServerThread)serverThreads.removeFirst(); |
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| 55 | t.stopThread(); |
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| 56 | } |
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| 57 | } |
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| 58 | |||
| 59 | /** |
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| 60 | * Allows application to turn off TcpNoDelay, http://www.dagblastit.com/java/sockets.html |
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| 61 | * @param TcpNoDelay If TcpNoDelay should be turned on or off. |
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| 62 | */ |
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| 63 | public void setTcpNoDelay(boolean TcpNoDelay) { |
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| 64 | this.tcpNoDelay = TcpNoDelay; |
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| 65 | } |
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| 66 | |||
| 67 | /** |
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| 68 | * Sends dataToSend to all connected clients |
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| 69 | * @param dataToSend The data to send. |
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| 70 | */ |
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| 71 | public void sendToAll(String dataToSend) { |
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| 72 | TcpServerThread t; |
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| 73 | for (int i = 0; i < serverThreads.size(); i++) { |
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| 74 | t = (TcpServerThread)serverThreads.get(i); |
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| 75 | t.sendData(dataToSend); |
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| 76 | } |
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| 77 | } |
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| 78 | |||
| 79 | /** |
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| 80 | * Sends dataToSend to all connected clients except those with a certain address |
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| 81 | * @param dataToSend The data to send. |
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| 82 | * @param address The address of the client to exclude from the send. |
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| 83 | */ |
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| 84 | public void sendToAllExcept(String dataToSend, String address) { |
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| 85 | TcpServerThread t; |
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| 86 | for (int i = 0; i < serverThreads.size(); i++) { |
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| 87 | t = (TcpServerThread)serverThreads.get(i); |
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| 88 | if (!address.equals(t.getAddress())){ |
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| 89 | t.sendData(dataToSend); |
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| 90 | } |
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| 91 | } |
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| 92 | } |
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| 93 | |||
| 94 | /** |
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| 95 | * Sends dataToSend to all connected clients except those with a certain address |
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| 96 | * @param dataToSend The data to send. |
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| 97 | * @param address The address of the client to send to. |
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| 98 | */ |
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| 99 | public void sendToClient(String dataToSend, String address) { |
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| 100 | TcpServerThread t; |
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| 101 | for (int i = 0; i < serverThreads.size(); i++) { |
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| 102 | t = (TcpServerThread)serverThreads.get(i); |
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| 103 | if (address.equals(t.getAddress())) { |
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| 104 | t.sendData(dataToSend); |
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| 105 | } |
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| 106 | } |
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| 107 | } |
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| 108 | |||
| 109 | /** |
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| 110 | * This is called in a new thread when server starts listening. |
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| 111 | */ |
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| 112 | public void run() { |
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| 113 | try { |
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| 114 | serverSocket = new ServerSocket(port); |
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| 115 | serverSocket.setSoTimeout(2000); |
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| 116 | //serverSocket.setReuseAddress(true); |
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| 117 | } catch (IOException e) { |
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| 118 | e.printStackTrace(); |
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| 119 | return; |
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| 120 | } |
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| 121 | TcpServerThread t; |
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| 122 | Socket s; |
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| 123 | //listen for incoming connections as long as flag is set |
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| 124 | while (listening) { |
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| 125 | try { |
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| 126 | s = serverSocket.accept(); |
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| 127 | //start new server thread for each connection |
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| 128 | t = new TcpServerThread(s, dataHandler, serverThreads, tcpNoDelay); |
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| 129 | serverThreads.add(t); |
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| 130 | t.startThread(); |
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| 131 | } catch (SocketTimeoutException e) { |
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| 132 | //don't care...fully normal since we have a timeout set |
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| 133 | //detta är serversocketsens timeout, inte socketens |
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| 134 | //System.out.println("Timeout: " + e); |
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| 135 | //något skapar timeouts från start |
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| 136 | //det är MbInternetTransport |
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| 137 | continue; |
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| 138 | } catch (Exception e) { |
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| 139 | e.printStackTrace(); |
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| 140 | break; |
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| 141 | } |
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| 142 | } |
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| 143 | try { |
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| 144 | serverSocket.close(); |
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| 145 | } catch (IOException e) { |
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| 146 | e.printStackTrace(); |
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| 147 | } |
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| 148 | } |
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| 149 | } |