diff --git a/src/CalDAVClient.php b/src/CalDAVClient.php
index 0016df9..e731a5a 100644
--- a/src/CalDAVClient.php
+++ b/src/CalDAVClient.php
@@ -62,6 +62,9 @@ class CalDAVClient {
     private $httpResponseBody = '';
 
     protected $parser; // our XML parser object
+    protected $request_url = "";
+    protected $xmlnodes = array();
+    protected $xmltags = array();
 
     // Requests timeout
     private $timeout;
@@ -176,11 +179,10 @@ function DoOptionsRequestAndGetDAVHeader( $url = null ) {
         $headers = preg_split('/\r?\n/', $headers);
 
         // DAV header(s)
-        $dav_header = preg_grep('/^DAV:/', $headers);
+        $dav_header = preg_grep('/^DAV:/i', $headers); // /i for case insensitive as some servers (example Nextcloud) do not send uppercase headers
         if (is_array($dav_header)) {
             $dav_header = array_values($dav_header);
-            $dav_header = preg_replace('/^DAV: /', '', $dav_header);
-
+            $dav_header = preg_replace('/^DAV: /i', '', $dav_header); // /i for case insensitive
             $dav_options = array();
 
             foreach ($dav_header as $d) {
diff --git a/src/SimpleCalDAVClient.php b/src/SimpleCalDAVClient.php
index 4edafec..6be0c5b 100644
--- a/src/SimpleCalDAVClient.php
+++ b/src/SimpleCalDAVClient.php
@@ -323,6 +323,33 @@ function getEvents ( $start = null, $end = null )
         return $report;
     }
 
+    /**
+	 * function getEventByGuid( $guid )
+	 * Gets an events from the CalDAV-Server with specified UID.
+	 *
+	 * Arguments:
+	 * @param string $guid UID of the iCal requested.
+	 *
+	 * Return value:
+	 * @return array an array of arrays containing ['href'], ['etag'] and the iCal in ['data'] for the found event.
+	 *	 
+	 */
+	function getEventByGuid ( $guid )
+	{
+		// Connection and calendar set?
+		if(!isset($this->client)) throw new CalDAVException('No connection. Try connect().', $this->client);
+		if(!isset($this->client->calendar_url)) throw new CalDAVException('No calendar selected. Try findCalendars() and setCalendar().', $this->client);
+
+		// Get it!
+		$data = $this->client->GetEntryByUid($guid);
+		foreach ($data as &$element) {
+			$element['href'] = $this->client->calendar_url . $element['href'];
+			unset($element);
+		}
+		return $data;
+
+	}
+    
     /**
      * function getTODOs()
      * Gets a all TODOs from the CalDAV-Server which lie in a defined time interval and match the