001: /*
002: *
003: * Copyright (c) 2007, Sun Microsystems, Inc.
004: *
005: * All rights reserved.
006: *
007: * Redistribution and use in source and binary forms, with or without
008: * modification, are permitted provided that the following conditions
009: * are met:
010: *
011: * * Redistributions of source code must retain the above copyright
012: * notice, this list of conditions and the following disclaimer.
013: * * Redistributions in binary form must reproduce the above copyright
014: * notice, this list of conditions and the following disclaimer in the
015: * documentation and/or other materials provided with the distribution.
016: * * Neither the name of Sun Microsystems nor the names of its contributors
017: * may be used to endorse or promote products derived from this software
018: * without specific prior written permission.
019: *
020: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
021: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
022: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
023: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
024: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
025: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
026: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
027: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
028: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
029: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
030: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
031: */
032: package socket;
033:
034: import java.io.*;
035:
036: import javax.microedition.io.*;
037: import javax.microedition.lcdui.*;
038: import javax.microedition.midlet.*;
039:
040: public class Server implements Runnable, CommandListener {
041: private SocketMIDlet parent;
042: private Display display;
043: private Form f;
044: private StringItem si;
045: private TextField tf;
046: private boolean stop;
047: private Command sendCommand = new Command("Send", Command.ITEM, 1);
048: private Command exitCommand = new Command("Exit", Command.EXIT, 1);
049: InputStream is;
050: OutputStream os;
051: SocketConnection sc;
052: ServerSocketConnection scn;
053: Sender sender;
054:
055: public Server(SocketMIDlet m) {
056: parent = m;
057: display = Display.getDisplay(parent);
058: f = new Form("Socket Server");
059: si = new StringItem("Status:", " ");
060: tf = new TextField("Send:", "", 30, TextField.ANY);
061: f.append(si);
062: f.append(tf);
063: f.addCommand(exitCommand);
064: f.setCommandListener(this );
065: display.setCurrent(f);
066: }
067:
068: public void start() {
069: Thread t = new Thread(this );
070: t.start();
071: }
072:
073: public void run() {
074: try {
075: si.setText("Waiting for connection");
076: scn = (ServerSocketConnection) Connector
077: .open("socket://:5000");
078:
079: // Wait for a connection.
080: sc = (SocketConnection) scn.acceptAndOpen();
081: si.setText("Connection accepted");
082: is = sc.openInputStream();
083: os = sc.openOutputStream();
084: sender = new Sender(os);
085:
086: // Allow sending of messages only after Sender is created
087: f.addCommand(sendCommand);
088:
089: while (true) {
090: StringBuffer sb = new StringBuffer();
091: int c = 0;
092:
093: while (((c = is.read()) != '\n') && (c != -1)) {
094: sb.append((char) c);
095: }
096:
097: if (c == -1) {
098: break;
099: }
100:
101: si.setText("Message received - " + sb.toString());
102: }
103:
104: stop();
105: si.setText("Connection is closed");
106: f.removeCommand(sendCommand);
107: } catch (IOException ioe) {
108: if (ioe.getMessage().equals("ServerSocket Open")) {
109: Alert a = new Alert("Server",
110: "Port 5000 is already taken.", null,
111: AlertType.ERROR);
112: a.setTimeout(Alert.FOREVER);
113: a.setCommandListener(this );
114: display.setCurrent(a);
115: } else {
116: if (!stop) {
117: ioe.printStackTrace();
118: }
119: }
120: } catch (Exception e) {
121: e.printStackTrace();
122: }
123: }
124:
125: public void commandAction(Command c, Displayable s) {
126: if ((c == sendCommand) && !parent.isPaused()) {
127: sender.send(tf.getString());
128: }
129:
130: if ((c == Alert.DISMISS_COMMAND) || (c == exitCommand)) {
131: parent.notifyDestroyed();
132: parent.destroyApp(true);
133: }
134: }
135:
136: /**
137: * Close all open streams
138: */
139: public void stop() {
140: try {
141: stop = true;
142:
143: if (is != null) {
144: is.close();
145: }
146:
147: if (os != null) {
148: os.close();
149: }
150:
151: if (sc != null) {
152: sc.close();
153: }
154:
155: if (scn != null) {
156: scn.close();
157: }
158: } catch (IOException ioe) {
159: }
160: }
161: }
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