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4
documentation/index.html
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@ -18,6 +18,10 @@ Documentation Contents:
<ul> <ul>
<li><a href="overview.html">Overview</a> <li><a href="overview.html">Overview</a>
<li><a href="gettingstarted.html">Getting Started Guide</a> <li><a href="gettingstarted.html">Getting Started Guide</a>
<li><a href="messaging.html">Messaging using Smack</a>
<li><a href="roster.html">Presence and Roster</a>
<li><a href="processing.html">Processing Incoming Packets</a>
<li><a href="extensions.html">Extending Packets</a>
<li><a href="properties.html">Packet Properties</a> <li><a href="properties.html">Packet Properties</a>
<li><a href="debugging.html">Debugging with Smack</a> <li><a href="debugging.html">Debugging with Smack</a>
</ul> </ul>

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documentation/messaging.html Normal file
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@ -0,0 +1,108 @@
<html>
<head>
<title>Smack: Chat - Jive Software</title>
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
<div class="header">
Messaging using Chat and GroupChat
</div>
<div class="nav">
&laquo; <a href="index.html">Table of Contents</a>
</div>
<p>
Sending messages back and forth is at the core of instant messaging. Two classes
aid in sending and recieiving messages:
<ul>
<li> <tt>org.jivesoftware.smack.Chat</tt> -- used to send messages between two people.
<li> <tt>org.jivesoftware.smack.GroupChat</tt> -- used to join a chat room to send messages between many people.
</ul>
Both the Chat and GroupChat classes use the <tt>org.jivesoftware.smack.packet.Message</tt> packet
class to send messages. In certain circumstances, you may wish to bypass the higher-level
Chat and GroupChat classes to send and listen for messages directly.
</p>
<p class="subheader">
Chat
</p>
A chat creates a new thread of messgaes (using a thread ID) between two users. The
following code snippet demonstrates how to create a new Chat with a user and then send
them a text message:<p>
<div class="code"><pre>
<font color="gray"><i>// Assume we've created an XMPPConnection name "connection".</i></font>
Chat newChat = connection.createChat(<font color="green">"jsmith@jivesoftware.com"</font>);
newChat.sendMessage(<font color="green">"Howdy!"</font>);
</pre></div><p>
The <tt>Chat.sendMessage(String)</tt> method is a convenience method that creates a Message
object, sets the body using the String parameter, then sends the message. In the case
that you wish to set additional values on a Message before sending it, use the
<tt>Chat.createMessage()</tt> and <tt>Chat.sendMessage(Message)</tt> methods, as in the
following code snippet:<p>
<div class="code"><pre>
<font color="gray"><i>// Assume we've created an XMPPConnection name "connection".</i></font>
Chat newChat = connection.createChat(<font color="green">"jsmith@jivesoftware.com"</font>);
Message newMessage = newChat.createMessage();
newMessage.setBody(<font color="green">"Howdy!"</font>);
message.setProperty(<font color="green">"favoriteColor"</font>, <font color="green">"red"</font>);
newChat.sendMessage(newMessage);
</pre></div><p>
The Chat object allows you to easily listen for replies from the other chat participant.
The following code snippet is a parrot-bot -- it echoes back everything the other user types.<p>
<div class="code"><pre>
<font color="gray"><i>// Assume we've created an XMPPConnection name "connection".</i></font>
Chat newChat = connection.createChat(<font color="green">"jsmith@jivesoftware.com"</font>);
newMessage.setBody(<font color="green">"Hi, I'm an annoying parrot-bot! Type something back to me."</font>);
<b>while</b> (<b>true</b>) {
<font color="gray"><i>// Wait for the next message the user types to us.</i></font>
Message message = newChat.nextMessage();
<font color="gray"><i>// Send back the same text the other user sent us.</i></font>
newChat.sendMessage(message.getBody());
}
</pre></div><p>
The code above uses the <tt>Chat.nextMessage()</tt> method to get the next message, which
will wait indefinitely until another message comes in. There are other methods to wait
a specific amount of time for a new message, or you can add a listener that will be notified
every time a new message arrives.
<p class="subheader">
GroupChat
</p>
A group chat connects to a chat room on a server and allows you to send and receive messages
from a group of people. Before you can send or receive messages, you must join the room using
a nickname. The following code snippet connects to a chat room and sends a
message.<p>
<div class="code"><pre>
<font color="gray"><i>// Assume we've created an XMPPConnection name "connection".</i></font>
GroupChat newGroupChat = connection.createGroupChat(<font color="green">"test@jivesoftware.com"</font>);
<font color="gray"><i>// Join the gropu chat using the nickname "jsmith".</i></font>
newGroupChat.join(<font color="green">"jsmith"</font>);
<font color="gray"><i>// Send a message to all the other people in the chat room.</i></font>
newGroupChat.sendMessage(<font color="green">"Howdy!"</font>);
</pre></div><p>
In general, sending and receiving messages in a group chat works very similarly to
the <tt>Chat</tt> class. Method are also provided to get the list of the other
users in the room.<p>
<br clear="all" /><br><br>
<div class="footer">
Copyright &copy; Jive Software 2002-2003
</div>
</body>
</html>

18
documentation/overview.html
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@ -16,11 +16,11 @@ Smack Overview
<p> <p>
Smack is a library for communicating with XMPP (Jabber) servers to perform Smack is a library for communicating with XMPP servers to perform
instant messaging and chat. instant messaging and chat.<p>
<p class="subheader"> <p class="subheader">
Key Advantages: Smack Key Advantages
</p> </p>
<ul> <ul>
@ -47,6 +47,18 @@ connection.createChat(<font color="green">"jsmith@jivesoftware.com"</font>).send
non-commercial applications. non-commercial applications.
</ul> </ul>
<p class="subheader">
About XMPP
</p>
XMPP (eXtensible Messaging and Presence Protocol) is an open, XML based protocol
making it's way through the IETF approval process under the guidance of the
Jabber Software Foundation (<a href="http://www.jabber.org">http://www.jabber.org</a>).
For a good overview of the protocol, read the first chapter of <u>Instant Messaging
in Java</u>, available free at
<a href="http://www.jivesoftware.com/products/messenger/book/">http://www.jivesoftware.com/products/messenger/book/</a>
<br clear="all" /><br><br>
<div class="footer"> <div class="footer">
Copyright &copy; Jive Software 2002-2003 Copyright &copy; Jive Software 2002-2003
</div> </div>

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documentation/processing.html
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@ -0,0 +1,86 @@
<html>
<head>
<title>Smack: Processing Incoming Packets - Jive Software</title>
<link rel="stylesheet" type="text/css" href="style.css" />
</head>
<body>
<div class="header">
Processing Incoming Packets
</div>
<div class="nav">
&laquo; <a href="index.html">Table of Contents</a>
</div>
<p>
Smack provides a flexible framework for processing incoming packets using two constructs:
<ul>
<li><tt>org.jivesoftware.smack.PacketCollector</tt> -- a class that lets you
synchronously wait for new packets.
<li><tt>org.jivesoftware.smack.PacketListener</tt> -- an interface for asynchronously
notifying you of incoming packets.
</ul>
A packet listener is used for event style programming, while a packet collector has a
result queue of packets that you can do polling and blocking operations on. So, a packet
listener is useful when you want to take some action whenever a packet happens to come in,
while a packet collector is useful when you want to wait for a specific packet to come
through. Packet collectors and listeners can be created using an <tt>XMPPConnection</tt> object.<p>
The <tt>org.jivesoftware.smack.filter.PacketFilter</tt> interface determines which
specific packets will be delivered to a <tt>PacketCollector</tt> or <tt>PacketListener</tt>.
Many pre-defined filters can be found in the <tt>org.jivesoftware.smack.filter</tt> package.
<p>
The following code snippet demonstrates registering both a packet collector and a packet
listener:<p>
<div class="code"><pre>
<font color="gray"><i>// Create a packet filter to listen for new messages from a particular</i></font>
<font color="gray"><i>// user. We use an AndFilter to combine two other filters.</i></font>
PacketFilter filter = new AndFilter(new PacketTypeTypeFilter(<b>Message.class</b>),
new FromContainsFilter(<font color="green">"mary@jivesoftware.com"</font>));
<font color="gray"><i>// Assume we've created an XMPPConnection name "connection".</i></font>
<font color="gray"><i>// First, register a packet collector using the filter we created.</i></font>
PacketCollector myCollector = connection.createPacketCollector(filter);
<font color="gray"><i>// Normally, you'd do something with the collector, like wait for new packets.</i></font>
<font color="gray"><i>// Next, create a packet listener. We use an anonymous inner class for brevity.</i></font>
PacketListener myListener = new PacketListener() {
<b>public</b> <b>void</b> processPacket(Packet packet) {
<font color="gray"><i>// Do something with the incoming packet here.</i></font>
}
};
<font color="gray"><i>// Register the listener.</i></font>
connection.addPacketListener(myListener, filter);
</pre></div><p>
<p class="subheader">
Standard Packet Filters
</p>
A rich set of packet filters are included with Smack, or you can create your own filters by coding
to the <tt>PacketFilter</tt> interface. The default set of filters includes:
<ul>
<li> <tt>PacketTypeFilter</tt> -- filters for packets that are a particular Class type.
<li> <tt>PacketIDFilter</tt> -- filters for packets with a particular packet ID.
<li> <tt>ThreadFilter</tt> -- filters for message packets with a parituclar thread ID.
<li> <tt>ToContainsFilter</tt> -- filters for packets that are sent to a particular address.
<li> <tt>FromContainsFilter</tt> -- filters for packets that are sent to a particular address.
<li> <tt>PacketExtensionFilter</tt> -- filters for packets that have a particular packet extension.
<li> <tt>AndFilter</tt> -- implements the logical AND operation over two filters.
<li> <tt>OrFilter</tt> -- implements the logical OR operation over two filters.
<li> <tt>NotFilter</tt> -- implements the logical NOT operation on a filter.
</ul>
<br clear="all" /><br><br>
<div class="footer">
Copyright &copy; Jive Software 2002-2003
</div>
</body>
</html>

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documentation/properties.html
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@ -63,8 +63,13 @@ you should keep the following in mind:
</p> </p>
<ul> <ul>
<li>When you send a Java object, only clients running Java will be able to interpret the data. <li>Packet extensions are the more standard way to add extra data to XMPP stanzas. Using
So, consider using a series of primitive values to transfer data instead. properties may be more convenient in some cases, however, since Smack will do the
work of handling the XML.
<li>When you send a Java object as a property, only clients running Java will be able to
interpret the data. So, consider using a series of primitive values to transfer data
instead.
<li>Objects sent as property values must implement Serialiable. Additionally, both the sender <li>Objects sent as property values must implement Serialiable. Additionally, both the sender
and receiver must have identical versions of the class, or a serialization exception and receiver must have identical versions of the class, or a serialization exception