Aplicações Realtime com XMPP

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Rafael Macedo @macedorafael http://github.com/rafaelmacedo

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Rafael Macedo @macedorafael http://github.com/rafaelmacedo

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backend…

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…com chapéu de front

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…com chapéu de front by @jcemer

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codeminer42.com

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Estamos contratando codeminer42.com

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XMPP

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EXtensible Messaging and Presence Protocol

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~ 300 extensões registrados na XSF (XMPP Standards Foundation) http://xmpp.org/xmpp-protocols/xmpp-extensions/

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XEP (XMPP Extension Protocol) ✴ discussões na lista de email ✴ reviews ✴ votação ✴ testes de interoperabilidade

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Um pouco de história…

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Um pouco de história…

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Um pouco de história… 1999 Projeto Jabber iniciado por Jeremie Miller 2001 Fundação da Jabber Software Foundation (JSF) 2004 Publicação XMPP_1.0 RFC3920 RFC3921 RFC3922 RFC3923

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Um pouco de história… 2007 Passou a se chamar XMPP Standard Foundation(XSF) 2011 RFC 6121 RFC 6120 RFC 6122

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Arquitetura XMPP

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Endereçamento

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XML Stanzas

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Arquitetura XMPP Servidor Cliente c2s

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Servidores

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Clientes

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✴ Jabber ID (JID) Endereçamento [email protected]/home

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✴ Jabber ID (JID) Endereçamento [email protected]/home

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✴ Jabber ID (JID) Endereçamento [email protected]/home

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✴ Jabber ID (JID) Endereçamento [email protected]/home

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XML Stanzas ✴ ✴ ✴

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Hello World from XMPP!

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Hello World from XMPP!

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Hello World from XMPP!

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Hello World from XMPP! chat error normal groupchat headline

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Hello World from XMPP!

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away @ RSJS 2014

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away @ RSJS 2014

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away @ RSJS 2014

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away @ RSJS 2014

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get set result

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XMPP na WEB

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http://strophe.im/strophejs/ Strophe.js An XMPP library for JavaScript Strophe.js is an XMPP library for JavaScript. It is primary purpose is to enable web-based, real-time XMPP applications that run in any browser.

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✴ Documentada ✴ Otimizada ✴ Testada ✴ Chesspark, Seesmic, Yammer

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Multi User Chat (MUC)

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https://github.com/rafaelmacedo/xmpp-chat-rsjs2014

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✴ XEP-0045: Multi-User Chat ✴ troca de mensagens no contexto de uma sala ✴ banir usuários ✴ moderação ✴ … http://xmpp.org/extensions/xep-0045.html

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Primeiros passos ✴ Criar conexão ✴ Conectar

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Criar conexão

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$("#login").on("click", function() { var connection = new Strophe.Connection( "http://taskie.org:5280/http-bind"); ! var jid = $("#jid").val() , passwd = $("#passwd").val(); ! connection.connect(jid, passwd, function(status) { if (status === Strophe.Status.CONNECTED) { alert("ihuuu connected!!!"); } else { if (status === Strophe.Status.AUTHFAIL) { alert("wrong passwd”); } } .... }); }); !

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$("#login").on("click", function() { var connection = new Strophe.Connection( "http://taskie.org:5280/http- bind"); ! var jid = $("#jid").val() , passwd = $("#passwd").val(); ! connection.connect(jid, passwd, function(status) { if (status === Strophe.Status.CONNECTED) { alert("ihuuu connected!!!"); } else { if (status === Strophe.Status.AUTHFAIL) { alert("wrong passwd”); } } .... }); }); !

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Strophe.Connection = function(service, options ) http://strophe.im/strophejs/doc/1.1.3/files/strophejs.html#Strophe.Connection

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Strophe.Connection = function(service, options ) http://strophe.im/strophejs/doc/1.1.3/files/strophejs.html#Strophe.Connection ws:// ou wss:// => WebSocket http:// ou https:// => BOSH

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  WEBSockets A B Iniciar conexão TCP GET /socket HTTP/1.1 \o/

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✴xmpp over websocket ✴draft (http://tools.ietf.org/html/ draft-ietf-xmpp-websocket-06) ✴versão 6 (22/04/2014)

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  BOSH ✴Bidirectional-streams Over Syncrhonous HTTP

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✴push/pull ✴eficiente ✴latência baixa

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A B idle

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A B idle

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Strophe.Connection = function(service, options ) http://strophe.im/strophejs/doc/1.1.3/files/strophejs.html#Strophe.Connection connect: function(jid, passwd, callback )

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Strophe.Connection = function(service, options ) http://strophe.im/strophejs/doc/1.1.3/files/strophejs.html#Strophe.Connection connect: function(jid, passwd, callback ) connecting authenticating authentication failed connected disconnecting disconnected

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Strophe.Status .CONNECTING .AUTHENTICATING .CONNECTED .DISCONNECTING .DISCONNECTED .CONNFAIL .AUTHFAIL ! !

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Conectado!! hora de entrar em alguma sala

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rsjs2014 A B C D

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rsjs2014 A B C D A B C

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rsjs2014 A B C D D D D D

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$("#join").on("click", function() { var room = $("#room"), , nick = $("#nick"); ! var presence = new Strophe.Builder(“presence”, { to: room + “@conference.taskie.org/” + nickname }) .c("x", {xmlns: "http://jabber.org/protocol/muc"}); ! connection.send(presence); }); Enviando informação de presença

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$("#join").on("click", function() { var room = $("#room"), , nick = $("#nick"); ! var presence = new Strophe.Builder(“presence”, { to: room + “@conference.taskie.org/” + nickname }) .c("x", {xmlns: "http://jabber.org/protocol/ muc"}); ! connection.send(presence); }); Enviando informação de presença

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Strophe.Builder = function(name, attrs ) http://strophe.im/strophejs/doc/1.1.3/files/strophejs.html#Strophe.Builder

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new Strophe.Builder( "message", { to: "[email protected]", type: "chat" } );

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$pres(attrs) $msg(attrs) $iq(attrs)

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new Strophe.Builder( "message", { to: "[email protected]", type: "chat" } ); $msg( { to: "[email protected]", type: "chat" });

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c: function(name, attrs, text ) t: function(text) adicionando nó filho adicionando conteúdo

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new Strophe.Builder( "message", { to: "[email protected]", type: "chat" } ); $msg( { to: "[email protected]", type: "chat" }) .c("body") .t("Hello World!");

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$("#join").on("click", function() { var room = $("#room"), , nick = $("#nick"); ! var presence = $pres( { to: room + “@conference.taskie.org/” + nickname }) .c("x", {xmlns: "http://jabber.org/protocol/muc"}); ! connection.send(presence); }); Enviando informação de presença

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Strophe.Connection = function(service, options ) http://strophe.im/strophejs/doc/1.1.3/files/strophejs.html#Strophe.Connection connect: function(jid, passwd, callback ) send: function(elem)

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Entrei?! mas cade todo mundo????

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Recebendo informação de presença connection.addHandler(onPresence, null, "presence");

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Strophe.Connection = function(service, options ) http://strophe.im/strophejs/doc/1.1.3/files/strophejs.html#Strophe.Connection connect: function(jid, passwd, callback ) send: function(elem) addHandler: function (handler, ns, name, type, id, from, options )

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addTimedHandler: function(period, handler ) deleteTimedHandler: function( handRef) deleteHandler: function(handRef)

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onPresence: function(presence) { var $presence = $(presence) , presenceType = $presence.attr("type"); var from = $presence.attr("from") , room = Strophe.getBareJidFromJid(from); , nick = Strophe.getResourceFromJid(from); if (presenceType === "error") { connection.disconnect(); } else if (presenceType !== "unavailable") { participants.push({ nickname: nick }); } if (presenceType !== "error") { if ($presence.find("status[code='110']").length > 0) { if ($presence.find("status[code='210']").length > 0) { nick = Strophe.getResourceFromJid(from)); } } } return true; };

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[email protected]/rafaelmacedo resource

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[email protected]/rafaelmacedo Bare JID

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Enviando mensagens var message = $msg( { to: "[email protected]", type: "groupchat" }); message.c("body").t("\o/"); connection.send(message);

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Ouvindo mensagens connection.addHandler( onPublicMessage, null, "message", "groupchat");

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onPublicMessage: function(message) { var $message = $(message); var from = $message.attr("from") , room = Strophe.getBareJidFromJid(from) , nick = Strophe.getResourceFromJid(from); if (room === "[email protected]") { var msg = $message.children("body").text(); } return true; }

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XMPP é a escolha certa? ✴ informação de presença ✴ notificações sem pooling ✴ custom payloads ✴ encriptação de canal

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Obrigado Rafael Macedo @macedorafael rafaelmacedo.com

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Obrigado Rafael Macedo @macedorafael rafaelmacedo.com ?

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Referencias Professinal XMPP- Programming with JavaScript and jQuery XMPP - The Definitive Guide

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Procurando por salas ✴ iq stanza ✴ disco#items protocol

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var iq = $iq( { to: "conference.taskie.org", type: "get", id: "rooms-info" }); ! iq.c("query", { xmlns: "http://jabber.org/protocol/ disco#items" }); connection.send(iq);

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connection.addHandler( onRoomsInfo, null, "iq", "result", "rooms-info");

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onRoomsInfo: function(iq) { var $IQ = $(iq); var items = $IQ.find("item") , rooms; ! rooms = _.map(items, function(item) { var $item = $(item); ! return { jid: $item.attr("jid"), name: $item.attr("name") }; }); ! return true; }

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