Sending any XMPP Stanza

XMPP messages or any other XMPP stanza can be sent using this API by sending an HTTP POST request to (by default) http://localhost:8080/rest/stream/?api-key=API_KEY with serialized XMPP stanza as a content, where API_KEY is the API key for HTTP API. This key is set in etc/config.tdsl. Also, each request needs to be authorized by sending a valid administrator JID and password as user and password of BASIC HTTP authorization method. Content of HTTP request should be encoded in UTF-8 and Content-Type should be set to application/xml.