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jabber.at disconnects when agsxmpp client does not respond to server ping
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vantojo 2014-12-23, 14:40 #1
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Subject: jabber.at disconnects when agsxmpp client does not respond to server ping
I have two accounts at jabber.at

the first I connect to with xabber/android.  It connects, receives messages, and stays connected until I logoff, regardless if there is any activity or not.

the second I connect to with agsxmpp/c#.  It connects, sends messages, and then looses the connection after 5 minutes, if there is no activity.

I contacted jabber.at and they confirmed that if the client does not respond to a jabber.at server ping, then the server terminates the connection.  This ping was set to 5 minutes.

I have not seen AgsXMPP documentation for how to recognize and then respond to a server ping.  But this would solve my problem.

In the connection string I have set KeepAlive = true;  but it does not make any difference.

Please advise
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Alex 2014-12-23, 15:11 #2
Member since Feb 2003 · 4296 posts · Location: Germany
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XMPP pings are defined here:
http://xmpp.org/extensions/xep-0199.html

When a server sends to you a ping than it wants to know if you are still "alive". When you don't reply to the ping then the server closes the connection because it assumes you lots it.
So if jabber.at is sending Pings, then check in your client for pings and reply to them when you get them.

Keep Alive is something different.

Alex
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vantojo 2014-12-23, 17:13 #3
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Hi Alex,

thank you.

Can you point me to some AgsXMPP/C# examples?  The standards are in Java, I believe.
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Alex 2014-12-23, 17:57 #4
Member since Feb 2003 · 4296 posts · Location: Germany
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The XEPS include only Xml examples, tehy are noit related to any library or programming language.

You should find your answer here:
http://forum.ag-software.net/post/5159

please let me know if this hepls.
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vantojo 2014-12-23, 18:51 #5
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The folks at jabber.at weren't sure if the client sent the ping that it would work.  It could be that I have to respond to their ping.  They pointed me to code here

http://sfdocsamples.googlecode.com/svn-history/r95/trunk/r…

Perhaps I can find what I need in there.  I'm not much of a C# coder (other legacy yes) so I mostly find examples and code snippets.
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Alex 2014-12-23, 18:55 #6
Member since Feb 2003 · 4296 posts · Location: Germany
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right there is also all you need in this link.
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vantojo 2014-12-23, 19:00 #7
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it seems that this is the code that responds to the server ping...

  1. else if (iq.Query is agsXMPP.protocol.extensions.ping.Ping)
  2. {
  3.     iq.SwitchDirection();
  4.     iq.Type = IqType.result;
  5.     agsXMPP.protocol.extensions.ping.Ping ping = iq.Query as agsXMPP.protocol.extensions.ping.Ping;
  6.     Jabber.xmpp.Send(iq);
  7. }
This post was edited on 2014-12-23, 19:03 by Alex.
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Alex 2014-12-23, 19:04 #8
Member since Feb 2003 · 4296 posts · Location: Germany
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correct
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vantojo 2014-12-23, 19:21 #9
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Thank you.
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