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XmppXElementStreamObserver does not trigger with new messages
Eduardo 2020-09-30, 16:51 #1
Subject: XmppXElementStreamObserver does not trigger with new messages
Dear all,

I am trying to use the XmppXElementStreamObserver to get new messages but its does not working.

This is my code:

  1. client.XmppXElementStreamObserver
  2.     .Where(el => el is Matrix.Xmpp.Client.Message)
  3.     .Subscribe(el =>
  4.     {
  5.         MessageBox.Show(el.ToString());
  6.     });
  7.  
  8. I tried this too:
  9.  
  10. client.XmppXElementStreamObserver
  11.     .Subscribe(el =>
  12.     {
  13.         MessageBox.Show(el.ToString());
  14.     });

The another user is receiving my messages without problems but I am not seeing the response.

I am using the Matriz.vNext v2.4.5.

What is the problem?
This post was edited on 2020-09-30, 16:55 by Alex.
Avatar
Alex 2020-09-30, 16:58 #2
I am not sure what your problem is. Have you tried to run the sample from here which also shows howto subscribe to stanzas?
https://github.com/matrix-xmpp/matrix-vnext/blob/master/ex…
Eduardo 2020-09-30, 17:03 #3
Hi Alex,

Yes! I tried exactly like that (just changed Message to Matrix.Xmpp.Client.Message).

I am just getting elements like <stream>, <proceed>, <challenge>, <success>, etc in connection process. After that, I send a message to another user and then he sends me the responde but the XmppXElementStreamObserver dont trigget that.

Thanks
Avatar
Alex 2020-09-30, 17:12 #4
are you sure that you are getting the message over the wire at all?
Have you enabled the raw Xml logs and looked at them?

When you have the logs then please post or attach them.

Alex
Eduardo 2020-09-30, 18:14 #5
How can I enable the logs?
Avatar
Alex 2020-09-30, 18:23 #6
see here:
https://matrix-xmpp.io/docs/logging/
Avatar
Alex 2020-09-30, 18:31 #7
But you were also saying that this handler:
  1. client.XmppXElementStreamObserver
  2.     .Subscribe(el =>
  3.     {
  4.         MessageBox.Show(el.ToString());
  5.     });

give you many other elements.
This handler should also return all <message/> elements to you. If it doesn't then you probably never received and and something is going wrong on the server side or on your server.

Alex
Eduardo 2020-09-30, 19:06 #8
Alex,

I think I found the problem.

I am getting an auth error when I try to regiter on the server.

Using this code, I received an auth error:

  1. client.HostnameResolver = new StaticNameResolver(hostname, 5222);
  2. client.RegistrationHandler = new RegisterAccountHandler(client);

Without this code I can send messages without problem.

Do you have any idea about it?

My RegisterAccountHandler class is exactly the same of this link:
https://matrix-xmpp.io/docs/register-account/
Avatar
Alex 2020-09-30, 21:21 #9
Without any logs I cannot tell you whats going wrong when you try to register. You should be able to see the errors in your XML logs.
Eduardo 2020-09-30, 21:53 #10
Follow the logs

  1. <stream:stream xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" from="localhost" id="9aowhumcuq" xml:lang="en" version="1.0" />
  2. <stream:features xmlns:stream="http://etherx.jabber.org/streams">
  3.  <starttls xmlns="urn:ietf:params:xml:ns:xmpp-tls" />
  4.  <mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl">
  5.     <mechanism>PLAIN</mechanism>
  6.     <mechanism>ANONYMOUS</mechanism>
  7.     <mechanism>SCRAM-SHA-1</mechanism>
  8.     <mechanism>CRAM-MD5</mechanism>
  9.     <mechanism>DIGEST-MD5</mechanism>
  10.  </mechanisms>
  11.  <compression xmlns="http://jabber.org/features/compress">
  12.     <method>zlib</method>
  13.  </compression>
  14.  <ver xmlns="urn:xmpp:features:rosterver" />
  15.  <register xmlns="http://jabber.org/features/iq-register" />
  16.  <c xmlns="http://jabber.org/protocol/caps" hash="sha-1" node="https://www.igniterealtime.org/projects/openfire/" ver="CjLJjlHxlrvQdXl/ZJ+0adQpkhM=" />
  17. </stream:features>
  18. <proceed xmlns="urn:ietf:params:xml:ns:xmpp-tls" />
  19. <stream:stream xmlns:stream="http://etherx.jabber.org/streams" xmlns="jabber:client" from="localhost" id="9aowhumcuq" xml:lang="en" version="1.0" />
  20. <stream:features xmlns:stream="http://etherx.jabber.org/streams">
  21.  <mechanisms xmlns="urn:ietf:params:xml:ns:xmpp-sasl">
  22.     <mechanism>PLAIN</mechanism>
  23.     <mechanism>ANONYMOUS</mechanism>
  24.     <mechanism>SCRAM-SHA-1</mechanism>
  25.     <mechanism>CRAM-MD5</mechanism>
  26.     <mechanism>DIGEST-MD5</mechanism>
  27.  </mechanisms>
  28.  <compression xmlns="http://jabber.org/features/compress">
  29.     <method>zlib</method>
  30.  </compression>
  31.  <ver xmlns="urn:xmpp:features:rosterver" />
  32.  <register xmlns="http://jabber.org/features/iq-register" />
  33.  <c xmlns="http://jabber.org/protocol/caps" hash="sha-1" node="https://www.igniterealtime.org/projects/openfire/" ver="CjLJjlHxlrvQdXl/ZJ+0adQpkhM=" />
  34. </stream:features>
  35. <iq type="error" id="KsZ+H7e1GEOQ05VHRO71Ug" from="[SERVES_ADDR]" to="localhost/9aowhumcuq" xmlns="jabber:client">
  36.  <query xmlns="jabber:iq:register" />
  37.  <error code="400" type="modify">
  38.     <bad-request xmlns="urn:ietf:params:xml:ns:xmpp-stanzas" />
  39.  </error>
  40. </iq>
This post was edited on 2020-09-30, 21:54 by Alex.
Avatar
Alex 2020-09-30, 21:57 #11
this log is incomplete. Looks like its only the incoming XML, but not the outgoing.

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