Index: XMPPHP/XMPP.php
===================================================================
--- XMPPHP/XMPP.php	(revision 51)
+++ XMPPHP/XMPP.php	(working copy)
@@ -85,6 +85,11 @@
 	protected $use_encryption = true;
 	
 	/**
+	 * @var boolean
+	 */
+	protected $use_anonymous = false;
+	
+	/**
 	 * Constructor
 	 *
 	 * @param string  $host
@@ -96,11 +101,17 @@
 	 * @param boolean $printlog
 	 * @param string  $loglevel
 	 */
-	public function __construct($host, $port, $user, $password, $resource, $server = null, $printlog = false, $loglevel = null) {
+	public function __construct($host, $port, $user = null, $password = null, $resource = null, $server = null, $printlog = false, $loglevel = null) {
 		parent::__construct($host, $port, $printlog, $loglevel);
 		
 		$this->user	 = $user;
 		$this->password = $password;
+		if ($user === null) {
+			$this->use_anonymous = true;
+		}
+		if ($resource === null) {
+			$resource = uniqid('XMPPHP_', true);
+		}
 		$this->resource = $resource;
 		if(!$server) $server = $host;
 		$this->basejid = $this->user . '@' . $this->host;
@@ -125,6 +136,15 @@
 	public function useEncryption($useEncryption = true) {
 		$this->use_encryption = $useEncryption;
 	}
+
+	/**
+	 * Turn anonymous on/ff
+	 *
+	 * @param boolean $useAnonymous
+	 */
+	public function useAnonymous($useAnonymous = true) {
+		$this->use_anonymous = $useAnonymous;
+	}
 	
 	/**
 	 * Turn on auto-authorization of subscription requests.
@@ -237,7 +257,22 @@
 			$this->send("<iq xmlns=\"jabber:client\" type=\"set\" id=\"$id\"><bind xmlns=\"urn:ietf:params:xml:ns:xmpp-bind\"><resource>{$this->resource}</resource></bind></iq>");
 		} else {
 			$this->log->log("Attempting Auth...");
+			$msupported = array();
+			if ($xml->hasSub('mechanisms')) {
+				// SASL
+				$ms = $xml->sub('mechanisms');
+				foreach($ms->subs as $m) {
+					if ($m->name != 'mechanism') {
+						continue;
+					}
+					$msupported[] = strtoupper(trim($m->data));
+				}
+			}
+			if ($this->use_anonymous and in_array('ANONYMOUS', $msupported)) {
+				$this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='ANONYMOUS'/>");
+			} else {
 			$this->send("<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>" . base64_encode("\x00" . $this->user . "\x00" . $this->password) . "</auth>");
+			}
 		}
 	}
 
@@ -273,6 +308,11 @@
 		if($xml->attrs['type'] == 'result') {
 			$this->log->log("Bound to " . $xml->sub('bind')->sub('jid')->data);
 			$this->fulljid = $xml->sub('bind')->sub('jid')->data;
+			if ($this->user === null) {
+				// anonymous login, so update these...
+				$this->user = preg_replace('/@.*/', '', $this->fulljid);
+				$this->basejid = preg_replace('/\/.*/', '', $this->fulljid);
+			}
 		}
 		$id = $this->getId();
 		$this->addIdHandler($id, 'session_start_handler');