SEND: <?xml version='1.0' encoding='UTF-8' ?>

SEND: <stream:stream to='server.tld' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>

RECV: <?xml version='1.0'?><stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='1470472293' from='server.tld' version='1.0' xml:lang='cs'>

RECV: <stream:features><starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/><compression xmlns='http://jabber.org/features/compress'><method>zlib</method></compression><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>PLAIN</mechanism></mechanisms><register xmlns='http://jabber.org/features/iq-register'/></stream:features>

Switching to TLS.

SEND: <starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>

RECV: <proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>

SEND: <?xml version='1.0' encoding='UTF-8' ?>

SEND: <stream:stream to='server.tld' xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' version='1.0'>

RECV: <?xml version='1.0'?><stream:stream xmlns='jabber:client' xmlns:stream='http://etherx.jabber.org/streams' id='1502938733' from='server.tld' version='1.0' xml:lang='cs'><stream:features><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>PLAIN</mechanism></mechanisms><register xmlns='http://jabber.org/features/iq-register'/></stream:features>

SEND: <auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>password_hash</auth>

RECV: <failure xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><not-authorized/></failure>

Error: Server sent "failure".

SEND: </stream:stream>