XMPP introduction

XMPP is Extensible Messaging and Presence Protocol (XMPP),
a set of open XML technologies for presence and real-time communication developed by the Jabber open-source community in 1999.

XMPP is an open, XML-based protocol for instant messaging and presence, supported by the non-profit Jabber Software Foundation.

Jabber is a IM technology over XMPP protocol.
XMPP is the core protocal of Jabber

Jabber is an open instant messaging technology that anyone can use.
the application sphere over the XMPP protocol

http://xmpp.org

Server-side:
http://xmpp.org/software/servers.shtml

Openfire (http://www.igniterealtime.org/projects/openfire)
OpenIM (http://www.openim.techlab.smk.fr/en/page1.xml)

Citadel
CommuniGate Pro
djabberd
ejabberd
IceWarp
iChat Server
in.jabberd
Isode M-Link
jabberd 1.x
jabberd 2.x
Jabber XCP
Jerry Messenger
Prosody
psyced
Sun Java System Instant Messaging
synapse
Tigase
Wokkel

Client-side:
Pidgin, Google Talk...

Open source library to develope client-side:
http://xmpp.org/software/libraries.shtml

Smack 3.1http://www.igniterealtime.org/projects/smack/index.jsp
Echomine Feridian
IP*Works Internet Toolkit
Jabber Stream Objects (JSO)

Smack is an Open Source XMPP (Jabber) client library for instant messaging and presence. A pure Java library, it can be embedded into your applications to create anything from a full XMPP client to simple XMPP integrations such as sending notification messages and presence-enabling devices.

XMPP Extensions:
    http://xmpp.org/extensions/
   
    XEP - XMPP Extension Protocol(XEP).
    http://xmpp.org/extensions/xep-0166.html   

    XEP-0166: Jingle
        This specification defines an XMPP protocol extension for initiating and managing peer-to-peer media sessions between two XMPP entities
        in a way that is interoperable with existing Internet standards.
        The protocol provides a pluggable model that enables the core session management semantics (compatible with SIP) to be used
        for a wide variety of application types (e.g., voice chat, video chat, file transfer) and with a wide variety of transport methods
        (e.g., TCP, UDP, ICE, application-specific transports).

Server-side configuration with OpenFire
1) Unpack it, run openfire_3.63\bin\openfire.exe

2) Create database in MySQL
    CREATE DATABASE openfire_db;
    GRANT ALL PRIVILEGES ON openfire_db.* TO 'xmlasia'@'%' IDENTIFIED BY 'xmlasia' WITH GRANT OPTION;

3) Setup Server at http://127.0.0.1:9090
    [e-mail]/xml-full
    Login to console: admin/xml-full

Client-side java sample using smack:
1) add dependencies: smack.jar,smackx.jar
2) java code

static void test() throws Exception {
    ConnectionConfiguration config = new ConnectionConfiguration("192.168.1.2", 5222);
    XMPPConnection conn = new XMPPConnection(config);
    conn.connect();
    
    conn.login("louis", "louis", "");
    
    ChatManager chatmanager = conn.getChatManager();
    Chat chat = chatmanager.createChat("bob@localhost", new MessageListener() {
        public void processMessage(Chat chat, Message message) {
            System.out.println("Received: " + message.getBody());
        }
    });

    try {
        chat.sendMessage("Hello, Bob");
    }
    catch (XMPPException e) {
        System.out.println("Error Delivering block");
    }

    Thread.sleep(Long.MAX_VALUE);
}

评论

1 楼 iso1600 2009-03-18  

well done