[#2989] Fix MNET when the Moodle side is running lighttpd. Patch thanks to Chris Bandy.

htdocs/api/xmlrpc/client.php

@@ -63,7 +63,7 @@ class Client {
         curl_setopt($ch, CURLOPT_POST, true);
         curl_setopt($ch, CURLOPT_USERAGENT, 'Mahara');
         curl_setopt($ch, CURLOPT_POSTFIELDS, $this->encryptedrequest);
-        curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: text/xml charset=UTF-8"));
+        curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: text/xml charset=UTF-8", 'Expect: '));
 
         $timestamp_send    = time();
         $this->rawresponse = curl_exec($ch);

htdocs/api/xmlrpc/lib.php

@@ -426,7 +426,7 @@ function get_public_key($uri, $application=null) {
     curl_setopt($ch, CURLOPT_POST, true);
     curl_setopt($ch, CURLOPT_USERAGENT, 'Moodle');
     curl_setopt($ch, CURLOPT_POSTFIELDS, $rq);
-    curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: text/xml charset=UTF-8"));
+    curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: text/xml charset=UTF-8", 'Expect: '));
 
     $raw = curl_exec($ch);
     if (empty($raw)) {