xmpp:http.badxmpp.eu is a test case with the `_xmpp-client` SRV record pointed at port 80 of a http server. This triggers an XML parser error, which ought to be caught and reported so the user can bother their admin about fixing it. ## Versions - OS: Debian 11 - Gajim version: master b3a88167ffbc - GTK version: 3.24.24 - Python-nbxmpp version: 01b4b9c8a306 ## Steps to reproduce the problem 1. Go to Account manager 1. Click Add Account 1. Fill in anything@http.badxmpp.eu as address 1. Fill in anything as password 1. Click 'Log In' ## Expected behavior Some sort of error. ## Actual behavior Spinner, forever. An error is show in the console `XML parsing error: not well-formed` (see below). `launch.py -v` gives the following output around the error: ``` 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Set state: StreamState.CONNECTED 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Execute state machine 2021-10-15 17:26:51 (I) nbxmpp.dispatcher (Account Wizard) Set dispatch callback: <bound method Client._xmpp_state_machine of <nbxmpp.client.Client object at 0x7f16c837abe0>> 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Start stream 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Set state: StreamState.WAIT_FOR_STREAM_START 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) ::::: DATA SENT :::: <?xml version='1.0'?><stream:stream xmlns="jabber:client" version="1.0" xmlns:stream="http://etherx.jabber.org/streams" to="http.badxmpp.eu" xml:lang="en"> 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Signal: data-sent 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Signal: stanza-sent 2021-10-15 17:26:51 (D) gajim.c.ged Raise event: stanza-sent 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Add keepalive timer 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) ::::: DATA RECEIVED :::: HTTP/1.1 400 Bad Request Server: nginx Date: Fri, 15 Oct 2021 15:26:52 GMT Content-Type: text/html; charset=utf-8 Connection: close <html> <head><title>400 Bad Request</title></head> <body bgcolor="white"> <center><h1>400 Bad Request</h1></center> <hr><center>nginx</center> </body> </html> 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Signal: data-received 2021-10-15 17:26:51 (E) nbxmpp.dispatcher (Account Wizard) XML parsing error: not well-formed (invalid token): line 1, column 4 2021-10-15 17:26:51 (I) nbxmpp.dispatcher (Account Wizard) Signal: parsing-error 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Set error: StreamError.PARSING, parsing-error, not well-formed (invalid token): line 1, column 4 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Set state: StreamState.DISCONNECTING 2021-10-15 17:26:51 (I) nbxmpp.smacks (Account Wizard) Close session 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Remove keepalive timer 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Set Connection State: TCPState.DISCONNECTING 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Shutdown output 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) ::::: DATA SENT :::: </stream:stream> 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Signal: data-sent 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Signal: stanza-sent 2021-10-15 17:26:51 (D) gajim.c.ged Raise event: stanza-sent 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Reveived zero data on _read_async() 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Set Connection State: TCPState.DISCONNECTED 2021-10-15 17:26:51 (I) nbxmpp.connection (Account Wizard) Signal: disconnected 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Set state: StreamState.DISCONNECTED 2021-10-15 17:26:51 (I) nbxmpp.stream (Account Wizard) Signal: disconnected 2021-10-15 17:26:51 (I) nbxmpp.dispatcher (Account Wizard) Clear IQ callbacks ```