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96 lines
3.3 KiB
HTML
96 lines
3.3 KiB
HTML
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<html>
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<head>
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<title>Smack: Getting Started - Jive Software</title>
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<link rel="stylesheet" type="text/css" href="style.css" /
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</head>
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<body>
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<div class="header">
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Getting Started With Smack
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</div>
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<div class="nav">
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« <a href="index.html">Table of Contents</a>
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</div>
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<p>
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This document will introduce you to the Smack API and provide an overview of
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important classes and concepts.
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</p>
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<p class="subheader">
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Requirements
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</p>
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The only requirement for Smack is JDK 1.2 or later. An XML parser is embedded in the smack.jar
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file and no other third party libraries are required.
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<p class="subheader">
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Establishing a Connection
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</p>
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The <tt>XMPPConnection</tt> class is used to create a connection to an
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XMPP server. To create an SSL connection, use the SSLXMPPConnection class.
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Below are code examples for making a connection:<p>
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<div class="code">
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<pre>
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<font color="gray"><i>// Create a connection to the jabber.org server.</i></font>
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XMPPConnection conn1 = <font color="navy"><b>new</b></font> XMPPConnection(<font color="green">"jabber.org"</font>);
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<font color="gray"><i>// Create a connection to the jabber.org server on a specific port.</i></font>
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XMPPConnection conn2 = <font color="navy"><b>new</b></font> XMPPConnection(<font color="green">"jabber.org"</font>, 5222);
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<font color="gray"><i>// Create an SSL connection to jabber.org.</i></font>
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XMPPConnection connection = <font color="navy"><b>new</b></font> SSLXMPPConnection(<font color="green">"jabber.org"</font>);
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</pre></div>
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<p>Once you've created a connection, you should login using a username and password
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with the <tt>XMPPConnection.login(String username, String password)</tt> method.
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Once you've logged in, you can being chatting with other users by creating
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new <tt>Chat</tt> or <tt>GroupChat</tt> objects.
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<p class="subheader">
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Working with the Roster
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</p>
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CONTENT COMING SOON
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<p class="subheader">
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Packets, the PacketReader, and the PacketWriter
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</p>
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Each message to the XMPP server from a client is called a packet and is
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sent as XML. The <tt>org.jivesoftware.smack.packet</tt> package contains
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classes that encapsulate the different packet types allowed by XMPP (message,
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presence, and IQ). Classes such as <tt>Chat</tt> and <tt>GroupChat</tt>
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provide higher-level constructs that manage creating and sending packets
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automatically, but you can also create and send packets directly. Below
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is a code example for changing the presence to let people we're unavailable
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because we're out fishing:<p>
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<div class="code">
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<pre>
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<font color="gray"><i>// Create a new presence. Pass in false to indicate we're unavailable.</i></font>
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Presence presence = new Presence(false);
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presence.setStatus(<font color="green">"Gone fishing"</font>);
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<font color="gray"><i>// Send the packet (assume we have a XMPPConnection instance called "con").</i></font>
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con.getPacketWriter().sendPacket(presence);
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</pre></div>
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<p>
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Every connection has a <tt>PacketReader</tt> and <tt>PacketWriter</tt>. The
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packet reader listens for XML data from the server and parses it into
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individual packets. You can listen for incoming packets by registering
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<tt>PacketWatcher</tt> objects with the packet reader. The packet writer
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is responsible for writing packets to the server. It takes <tt>Packet</tt>
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objects and converts them to XML before sending them over the network.
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<p><div class="footer">
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Copyright © Jive Software 2002-2003
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</div>
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</body>
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</html>
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