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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@1777 b35dd754-fafc-0310-a699-88a17e54d16e

source/org/jivesoftware/smack/PacketWriter.java

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+/**
+ * $RCSfile$
+ * $Revision$
+ * $Date$
+ *
+ * Copyright (C) 2002-2003 Jive Software. All rights reserved.
+ * ====================================================================
+ * The Jive Software License (based on Apache Software License, Version 1.1)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by
+ *        Jive Software (http://www.jivesoftware.com)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Smack" and "Jive Software" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please
+ *    contact webmaster@coolservlets.com.
+ *
+ * 5. Products derived from this software may not be called "Smack",
+ *    nor may "Smack" appear in their name, without prior written
+ *    permission of Jive Software.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL JIVE SOFTWARE OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ */
+
+package org.jivesoftware.smack;
+
+import java.util.LinkedList;
+import java.io.*;
+
+import org.jivesoftware.smack.packet.Packet;
+
+/**
+ * Writes packets to a Jabber server.
+ *
+ * @see XMPPConnection#getPacketWriter()
+ * @author Matt Tucker
+ */
+public class PacketWriter extends Thread {
+
+    private Writer writer;
+    private XMPPConnection connection;
+    private LinkedList queue;
+    private boolean done = false;
+
+    protected PacketWriter(XMPPConnection connection) {
+        this.connection = connection;
+        this.writer = connection.writer;
+        this.queue = new LinkedList();
+        // This should be a daemon thread.
+        setDaemon(true);
+    }
+
+    public void sendPacket(Packet packet) {
+        synchronized(queue) {
+            queue.addFirst(packet);
+            queue.notify();
+        }
+    }
+
+    /**
+     * Returns the next available packet from the queue for writing.
+     *
+     * @return the next packet for writing.
+     */
+    private Packet nextPacket() {
+        synchronized(queue) {
+            while (queue.size() == 0) {
+                try {
+                    queue.wait();
+                }
+                catch (InterruptedException ie) { }
+            }
+            return (Packet)queue.removeLast();
+        }
+    }
+
+    public void run() {
+        try {
+            // Open the stream.
+            StringBuffer stream = new StringBuffer();
+            stream.append("<stream:stream ");
+            stream.append("xmlns=\"jabber:client\" ");
+            stream.append("xmlns:stream=\"http://etherx.jabber.org/streams\" ");
+            stream.append("xmlns:sasl=\"http://www.iana.org/assignments/sasl-mechanisms\" ");
+            stream.append("to=\"" + connection.getHost() + "\">");
+            writer.write(stream.toString());
+            writer.flush();
+            // Write out packets from the queue.
+            while (!done) {
+                Packet packet = nextPacket();
+                writer.write(packet.toXML());
+                writer.flush();
+            }
+            // Close the stream.
+            try {
+                writer.write("</stream>");
+                writer.flush();
+            }
+            catch (Exception e) { }
+            finally {
+                try {
+                    writer.close();
+                }
+                catch (Exception e) { }
+            }
+        }
+        catch (IOException ioe){
+            ioe.printStackTrace();
+        }
+    }
+
+    public void shutdown() {
+        done = true;
+    }
+}
+
+