Parsing custom message - Forum

TijsVandeVelde

2017-11-23, 16:54 #1

Member since Nov 2017 · 2 posts
Group memberships: Members

Show profile ·

Link to this post

Subject: Parsing custom message

Hi,

I have been using your sdk for a couple of days now for a personal project and sofar all is going well. I am using XEP-0313 to archive the messages on my server. I am capable of retrieving all messages sent from one user to an other.

This is the result i get per message in the xmppClient_OnMessage :

<message from="fakeId" to="fakeId/MatriX" xmlns="jabber:client">
  <result xmlns="urn:xmpp:mam:1" id="1511360750337715">
    <forwarded xmlns="urn:xmpp:forward:0">
      <delay xmlns="urn:xmpp:delay" stamp="2017-11-22T14:25:50.337715Z" />
      <message xmlns="jabber:client" from="user1/MatriX" to="user2" type="chat">
        <body>,kkkk</body>
      </message>
    </forwarded>
  </result>
</message>

I cannot seem to parse this to a class to be able to retrieve the body data and the delay data.

This is a quick example of the code i use to parse it.

/// <summary>
/// Chat log response.
/// </summary>
public class ChatLogResponse : XmppXElement 
{
        #region Constructors
        /// <summary>
    /// Constructor.
    /// </summary>
    public ChatLogResponse() :base("jabber:client","message")
    {}
 
    #endregion
 
    public string From
    {
        get { return GetTag("from"); }
        set { SetTag("from", value); }
    }
    
    public string To
    {
        get { return GetTag("to"); }
        set { SetTag("to", value); }
    }
 
    public ChatLogResponseResult Result
    {
        get { return Element<ChatLogResponseResult>(); }
        set { Replace(value); }
    }
}
 
 
public class ChatLogResponseResult : XmppXElement
{
    public ChatLogResponseResult() : base(Variables.MamProtocol, "result")
    {}
 
    public int Id
    {
        get { return GetAttributeInt("id"); }
        set { SetAttribute("id", value); }
    }
    
    public ChatLogResponseForwarded Forwarded
    {
        get { return Element<ChatLogResponseForwarded>(); }
        set { Replace(value); }
    }
}
 
 
public class ChatLogResponseForwarded : XmppXElement
{
    public ChatLogResponseForwarded() : base("urn:xmpp:forward:0", "forwarded")
    {
    }
    
    public ChatLogResponseDelay Delay
    {
        get { return Element<ChatLogResponseDelay>(); }
        set { Replace(value); }
    }
        
    public ChatLogResponseMessage Message
    {
        get { return Element<ChatLogResponseMessage>(); }
        set { Replace(value); }
    }   
}
 
public class  ChatLogResponseDelay : XmppXElement
{
    public ChatLogResponseDelay() : base("urn:xmpp:delay", "delay")
    {}
 
    public string Stamp
    {
        get { return GetAttribute("stamp"); }
        set { SetAttribute("stamp", value); }
    }
}
 
public class  ChatLogResponseMessage : XmppXElement
{
    public ChatLogResponseMessage() : base("jabber:client","message")
    {}
    
    public string From
    {
        get { return GetAttribute("from"); }
        set { SetAttribute("from", value); }
    }
    
    public string To
    {
        get { return GetAttribute("to"); }
        set { SetAttribute("to", value); }
    }
    
    public string Type
    {
        get { return GetAttribute("type"); }
        set { SetAttribute("type", value); }
    }
 
    /// <summary>
    /// Value child.
    /// </summary>
    public string Body
    {
        get { return GetTag("body"); }
        set { SetTag("body",value); }
    }
}

I hope somebody sees what i am doing wrong.

Thank you in advance!

This post was edited on 2017-11-23, 23:36 by Alex.

Alex

2017-11-23, 23:46 #2

Member since Feb 2003 · 4449 posts · Location: Germany
Group memberships: Administrators, Members

Show profile ·

Link to this post

most of the classes you wrote are obsolete, because they already exist in MatriX.

1) the outer message class is of type MatriX.Xmpp.Client.Message, as well as the inner message in your Xml.
2) The forwarded type is of Matrix.Xmpp.MessageCarbons.Forwarded
3) The delay tag is f type Matrix.Xmpp.Delay.Delay

The only element which which does not exist in MatriX is the result tag.

When you write custom Element classes you have to register them in teh Factory, have you done this?
Here is an example for this:
https://www.ag-software.net/matrix-xmpp-sdk/matrix-develop…

TijsVandeVelde

2017-11-24, 11:30 #3

Member since Nov 2017 · 2 posts
Group memberships: Members

Show profile ·

Link to this post

I greatly reduced my classes to parse the incomming message.
And i also forgot to register my own class in the factory.
Everything is working fine now.

Thank you for the information!

Alex

2017-11-24, 11:36 #4

Member since Feb 2003 · 4449 posts · Location: Germany
Group memberships: Administrators, Members

Show profile ·

Link to this post

great to hear its working now.

The registration is required by parser for incoming packages. While it reads the XML and parsed out the tag name and namespace its requests a new class instance from the factory by tag name and namespace. If no registration exists it always creates an XmppXlement which is the base.

For outgoing packages the registration is not required.

Alex