Java Smack 4.1 XMPP can send messages but cannot receive them

Question

I am developing a Java App to chat with devices in XMPP.

Given the logs I am able to send messages but I can't receive them

Here is my code

XMPPListener.java

package messaging;

import java.io.IOException;

import org.jivesoftware.smack.AbstractXMPPConnection;
import org.jivesoftware.smack.MessageListener;
import org.jivesoftware.smack.ConnectionConfiguration.SecurityMode;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.SmackException.NotConnectedException;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.chat.Chat;
import org.jivesoftware.smack.chat.ChatManager;
import org.jivesoftware.smack.chat.ChatManagerListener;
import org.jivesoftware.smack.chat.ChatMessageListener;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.tcp.XMPPTCPConnection;
import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;

public class XMPPListener implements MessageListener {

    AbstractXMPPConnection connection;

    public XMPPListener(String host, int port, String serviceName){

        XMPPTCPConnectionConfiguration config = XMPPTCPConnectionConfiguration.builder().
                setHost(host)
                .setServiceName(serviceName)
                .setSecurityMode(SecurityMode.ifpossible)
                .setPort(port)
                .setDebuggerEnabled(true)
                .build();
        this.connection = new XMPPTCPConnection(config);

    }

    public void connect() {
        try {
            this.connection.connect();
        } catch (SmackException | IOException | XMPPException e) {
            e.printStackTrace();
        }
    }

    public void login(String userName, String password) throws XMPPException {
        try {
            this.connection.login(userName, password);
        } catch (SmackException | IOException e) {
            e.printStackTrace();
        }
    }

    public void sendMessage(String message, String to) throws XMPPException {
          Chat chat = ChatManager.getInstanceFor(connection).createChat(to);
          try {
              chat.sendMessage(message);
          } catch (NotConnectedException e) {
              e.printStackTrace();
          }

    }

    public void listenChat(String name){
        ChatManager manager = ChatManager.getInstanceFor(this.connection);
        manager.addChatListener(new ChatManagerListener() {

            @Override
            public void chatCreated(Chat chat, boolean createdLocally) {
                System.out.println("Created chat");
                chat.addMessageListener(new ChatMessageListener() {

                    @Override
                    public void processMessage(Chat chat, Message message) {
                        System.out.println(message.getBody());

                    }
                });

            }
        });
    }

    public void disconnect() {
        connection.disconnect();
    }

    @Override
    public void processMessage(Message message) {
        System.out.println("Received something: " + message.getBody());


    }

}

Main.java

XMPPListener xmppListener = new XMPPListener("ajabber.me",5222,"ajabber.me");
        try {
            xmppListener.connect();
            xmppListener.login(user, password);
            xmppListener.listenChat(to);
            while(true){
            xmppListener.sendMessage("Spack me spack me, Ho !", to);
            Thread.sleep(10000);
            }
        } catch (XMPPException e2) {
            e2.printStackTrace();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

In this code I connect to a random server i found here : list of servers. Then I try to send some messages I have the folowing logs

11:51:56 AM SENT (0): 
11:51:56 AM RECV (0): 
11:51:56 AM SENT (0): 
11:51:56 AM RECV (0): 
11:51:57 AM SENT (0): 
11:51:57 AM RECV (0): 
11:51:57 AM RECV (0): PLAINDIGEST-MD5X-OAUTH2SCRAM-SHA-1
chat created
11:51:57 AM SENT (0): coucoud0b9f5a3-515a-4d53-9795-ca112962d4f8
chat created
11:51:59 AM SENT (0): coucoua6dbc7a0-2b3a-4a30-9be6-2b1e2995cadb

Given those logs, I guess the messages are sent and the chat is also created but it seems that I never receive the messages. Could you guys help me solve this problem ?

I run java 1.8 and Smack 4.7

EDIT

I have tried using Spark : I manage to talk with my application (in a Spark client), I also have edited my code as a new version

Here is the proof with a wonderful screenshot

However I still cannot retrieve my messages : I see them in the logs, but the method in the chat listener is not called

LOGS

03:17:22 PM RECV (0): Wololo5292f083-bba9-4a63-ab40-9718b5e00bd0

LAST EDIT

My code is working with the one above, a special thanks to MrKp

MrPk · Accepted Answer

Assumptions:

Server exist (why not install a localmachine openfire or whatelse?)
User "sender" is correctly logged in on this server
User "receiver" is correctly registered in the server
You control with 2 clients user "sender" and user "receiver" (why not install as second client Spark?) or, in alternative, "reciver" it's a working bot in echo mode.

You'll cannot receive your outgoing messages in "chat", but you'll do in groupchats. In chats you'll be able to set a listener for "reciver" messages.

About your code and how to fix:

You are trying to make a connect and register a listener of a chat before login and without login.

Correct order:

connect
login
new Chat
ChatManager.getInstance(connection).addChatListener

now you'll be able to listen incoming messages on this chat, when "reciver" will send you one

Java Smack 4.1 XMPP can send messages but cannot receive them

Answers (1)

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