CE Messenger [PART TWO]

I am having experience with servers like, J2EE server,tomcat, and netbeans,,so I can use the netbeans..I did not use spark...just here I heard about that...What is use of smack api.? It is a time to start...

um.. well we really won't be needing any server as of now and if you are comfortable with Netbeans as your IDE its fine 😀

Spark is just used to test the openfire server configuration.If you haven't done it i would suggest you try to use it once, as our ce messenger functioning would be on similar lines

With the help of smack api we would communicate with the openfire server through java code.

Happy learning

@xero : Whether in this weekend we going to start ah?

hey, I'm sorry for the late reply, I'm pretty caught up on weekdays so, cannot visit CE on weekdays. Well tomorrow (Saturday) I'll be posting first patch of code for a basic authentication with the server. I'll put it in as simplistic manner as possible and will give a brief explanation on it. After that I want to try and run the code, with results to be posted in this thread !!

Happy Learning

@XERO

did anyone say "U ROCK?"

Thanks for the compliments Durga, but we all rock 😁

The code for basic authentication and chat functionality for created users in server is as follows..


// Create a connection to the igniterealtime.org XMPP server.
XMPPConnection con = new XMPPConnection("serverAddress");
// Connect to the server
con.connect();
// Most servers require you to login before performing other tasks.
con.login("username", "password");
// Start a new conversation with John Doe and send him a message.
Chat chat = con.getChatManager().createChat("username2@localhost", new MessageListener() {

public void processMessage(Chat chat, Message message) {
// Print out any messages we get back to standard out.
System.out.println("Received message: " + message);
}
});
chat.sendMessage("Howdy!");
// Disconnect from the server
con.disconnect();


Now that sure looks pretty easy isn't it 😀

The smack API, as mentioned before provides us with a class called XMPPConnection.
This object is responsible for establishing a connection between the program and server and authenticate with credentials.
Then we instantiate a Chat object which handles the chatting process with another user.

The above code has been extracted from #-Link-Snipped-#

I really want everyone to try the above code. If not to send a message atleast try creating a single user at server and authenticate it via this code. With this you'll be able to get a whiff of how to start with the code 😀

Now those who really couldn't understand what's happening in the code really need to look forward for java tutoring which Shalini had given.

Happy Learning

@Xero:nice start...Shall I know the plan of IM?Then only I can understand what is really happening...

I have sucessfuly compiled with smack api...How to test it? via a browser using jsp? or through command line? How to test that?

Well to start with, we'll first need people to have a good hands on with smack API. So for that we'll play with the API for 2-3 weeks going through assignments like authentication, creating users, chatting etc..

As per for testing, the above code create two users in server. Log in with one of the users through spark and then use the above program to log in the second user. As an output, you'll the user logged in with spark receive the message "Howdy" 😀

That's the test...

Similarly you can create a console program which can at least send a spark based user messages. This is a good assignment to start with.

Happy Learning

Good Idea...Xero

While trying to run the program, I got the following

Exception in thread "main" java.lang.NoClassDefFoundError: s
Caused by: java.lang.ClassNotFoundException: s
at java.net.URLClassLoader$1.run(URLClassLoader.java:221)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:209)
at java.lang.ClassLoader.loadClass(ClassLoader.java:324)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:269)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:337)

How to run the program ? Is it similar to run the ordinary java programs?

This is just and ordinary java program. Put the whole code in main method, and run it. The issue you reported is related to classpath .

If you are using Netbeans/Eclipse i don't think you'll face this issue. Also make sure before running the program that the openfire server is up and running properly.

If you continue to seek the problem, try google 😀

package ceim;

import org.jivesoftware.smack.*;
import org.jivesoftware.smack.packet.*;
import org.jivesoftware.smackx.*;
import java.util.*;
import java.io.*;

public class offreader {
private static List<String> nodes;
public static void main(String[] args) throws Exception {
XMPPConnection con = new XMPPConnection("localhost");
con.connect();
con.login("u1", "u1");
OfflineMessageManager off=new OfflineMessageManager(con);
off.getMessages(nodes);
System.out.println(nodes.get(0));
con.disconnect();
}
}

This program is to display offline messages.
I have created two users u1,u2; And using spark logged using u1 account.
And Through u1 I add u2 to my contacts in spark and sent messages to u2[which is offline message]. I run the above program to get those offline messages...It runs ,,,But displays message as null...Why this program fails to display the offline messages?

xeroThis is just and ordinary java program. Put the whole code in main method, and run it. The issue you reported is related to classpath .

If you are using Netbeans/Eclipse i don't think you'll face this issue. Also make sure before running the program that the openfire server is up and running properly.

If you continue to seek the problem, try google 😀

The program you have given now runs correctly...Now only I am using net beans...No need for google now...😉

Wow dude, i appreciate your effort 😀
Seems like are getting a whiff of a stuff already, which's nice ! I'll need to check the latest implementation of offline message manager and will get back to you on the problem you mentioned !

Happy Learning !

Thank you xero, Well ,How to have a chat between the two users,

Can I use ChatManager class,Chat,MessageListener? What are the classes I have to use to chat?

To begin with, you can go through the API Documentation of all the classes which we use in the program. It will help you gather a pristine idea, on how to proceed 😀

And use your own imagination 😁

Njoy

Hmm, After looking the API , I asked this,

Can I use ChatManager class,Chat,MessageListener? What are the classes I have to use to chat?

xero// Create a connection to the igniterealtime.org XMPP server.
XMPPConnection con = new XMPPConnection("serverAddress");
// Connect to the server
con.connect();
// Most servers require you to login before performing other tasks.
con.login("username1", "password");
// Start a new conversation with John Doe and send him a message.
Chat chat = con.getChatManager().createChat("username2@localhost", new MessageListener() {

public void processMessage(Chat chat, Message message) {
// Print out any messages we get back to standard out.
System.out.println("Received message: " + message);
}
});
chat.sendMessage("Howdy!");
// Disconnect from the server
con.disconnect();

Whether here This line, connects username1 to username2"

Chat chat = con.getChatManager().createChat("username2@localhost", new MessageListener() {......

Hey,
I'll be out this weekend. So, will try to reply to the thread either on Monday or Tuesday. If i got time, i may come up with snippet which can enable chatting between two users 😀

Happy Learning

Chat chat = con.getChatManager().createChat("username2@localho st", new MessageListener() {......

Whether here This line, connects username1 to username2

@Maro -Where are you ? No posts from your side here ?

Guys ! Work like a team rather than going alone like a rocket. 😀

no updates here😔

Well, I think me and Maro are lagging far behind you guys ms_cs and xero. I need some time to catch you guys, then only you can get updates from my side.

Maro, you are also with us right?

PS: Very lazy in reading these long long threads. 😉

I have just tested the program given by xero, and tried one(sending offline messages) but till now not completed that😔

[Updates from my side ]

I am not yet finished with server set up things only and afraid of wasting my one more day again for this. 😐

stop the windows services that give troubles like port conflict...

If port conflict is a problem this may help you

ms_csstop the windows services that give troubles like port conflict...

If port conflict is a problem this may help you

Port conflict was resolved but I don't know why that stupid Apache don't get started at once, it says "Busy" 😡

Hey Shalini, chill out !!
Firstly sorry for not replying for a while, i was out on a much needed vacation.

I guess durga and ms_cs should help out shalini in all possible ways with the setup issues, so that ev'1 is at the same place for pick off.

And as i had told earlier, we'll spend some time with hands on API before starting with the actual development.

MaRo seems to be busy these days, however i believe that he won't have any problems in picking this up 😀

N'joy learning !

Great to see a lot of activity here. Xero, can you later update the rest of us on the plan once you guys start actual development?

@ms_cs and @durga May I know when can I see you guys online for helping me in setting up environment? I can assure my availability after 10 PM IST. Anyone of you - available at that time?

Yes.I will be available after 10IST...I have followed the steps in the document.It works fine now.

whether these steps worked fine for you?

Step 1: Unpack the package into a directory of your choice. Please start the
"setup_xampp.bat" and beginning the installation.

Step 2: If installation ends successfully, start the Apache 2 with
"apache_start".bat", MySQL with "mysql_start".bat". Stop the MySQL Server with "mysql_stop.bat". For shutdown the Apache HTTPD, only close the Apache Command (CMD).

Step 3: Start your browser and type #-Link-Snipped-# or #-Link-Snipped-# in the location bar. You should see our pre-made
start page with certain examples and test screens.

Thanks MS😀
@ Shalini. Lady !0 PM IST is 3 am AST! :shock:

3am in a weekend should be alright.. *grin*

Guys, don't forget to compile and organize all the steps (HOWTOs, etc) once your all done with the testing, thanks 😀

Can't tell you how happy I am to see the movement on this front. Thank you guys for reviving it. Hope the CE-IM sees the light of the day soon.

I'm waiting to use it.

xeroTeam List

• xero (Project Leader)
• ms_cs
• shalini_goel14
• durga

Can I know the reason why Maro's name is not here ?

@ms_cs Can you come online at hamachi?

shalini_goel14Can I know the reason why Maro's name is not here ?

@ms_cs Can you come online at hamachi?

*cough* my bad. I was going through names in this thread 😉

@Shalini/Ash - I'm removing the team list as of now. We'll discuss the team before the development begins ! Kindly don't discuss the team now, save it for later part 😁

@Shalini - How's your environment setup going?

Happy Learning

xero@Shalini - How's your environment setup going?

Ya ! Just give me 1 more day. Recent problem I was facing was "Cannot establish connection to the database" while doing database settings as per durga's doc.

Anyways I am going to do fresh start rather than facing such never ending issues.

@Team Members: Thinking that the works going slowly.speedup the works guys

ms_cs@Team Members: Thinking that the works going slowly.speedup the works guys

Ya ! sure ms_cs,

*Luckily now apache and mysql is shown as running for me * Touchwood😉



2 questions:

1. Above screen means xampp is working as well as installed fine right?
Then why I am still getting "page load error" on following link : #-Link-Snipped-# or #-Link-Snipped-#

2. Did you guys mentioned anywhere how to set up database in mysql ? I couldn't find any such information in durga's doc and in all scattred threads of CE-IM 😐



Do I need to use above screen to make database, if yes..how? I couldn't see anywhere such options to create database 😐

Please answer fast to make work speed up at my end. I want to finish off this thing today only in any case.

goto following link

#-Link-Snipped-#
and create the database aikon

I forget to specify one step, you have to start xampp

ms_csgoto following link

#-Link-Snipped-#

I have already tried this link also , a simple #-Link-Snipped-# is not working, forget about phpmyadmin

Oh..you can ask CEan durga, to fix this.

ms_csOh..you can ask CEan durga, to fix this.

Why , what is the thing that durga knows and you don't know? If I will have to ask durga, I will have to spend my 1 more day in this thing only.She is not available now.

Try ms_cs, if you know and can help me out today only.

Sure, But yours post #-Link-Snipped-# indicates that works are going well...SO, I dont understand why it doesnot open the link , #-Link-Snipped-#

you may try this again,

1.start xampp again
2.then go to that link

@shalini: everything is fine now?

ms_csSure, But yours post #-Link-Snipped-# indicates that works are going well...SO, I dont understand why it doesnot open the link , #-Link-Snipped-#

you may try this again,

1.start xampp again
2.then go to that link

Yeah according to that post this time xampp showed no problems to me but I don't know why that link is showing "no page " found error. Anyways leave it ms_cs .

Thanks !

PS: The biggest problem-why this project will keep on going sloweeeeeee..ssssst speed is , everyone is not available together at same time.

@ Shalini,

I have not documented the DB setup part as I have not done it.
If I find time this weeke end, I shall do it. I need to first learn it and then do it.

If you are expecting some one with high expertise , not really. I am learnign and then documenting not that I know stuff and document 😀
@ MS-CS
Its not team members who need to speed us, its *US*

@ all.

Yup, I am in a different time zone.
May be I can hand over the DB admin part to some on in INDIA and be in more of coordination , than waste time in waiting for others.

ms_csSure, But yours post #-Link-Snipped-# indicates that works are going well...SO, I dont understand why it doesnot open the link , #-Link-Snipped-#

you may try this again,

1.start xampp again
2.then go to that link

has OPENFIRE been started?