Internet Da Coisas E Aplicação Distríbuida Atividade 01: Protocolo XMPP

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Internet da Coisas e Aplicação distríbuida Atividade 01: Protocolo XMPP Professor: Dr. Cristiano André da Costa Alunos: Eliel Albuquerque Emiliano Monteiro Manoel Pontes Nicodemo Moreno XMPP - Introdução ● Extensible Messaging and Presence Protocol (XMPP) ● Jabber é o nome original de Extensible Messaging and Presence Protocol. ● É um protocolo aberto. ● É um padrão do IEEE. ● É utilizado pelo Google Talk. ● Descentralizado, qualquer um pode rodar um servidor XMPP. ● Utiliza TLS (Transport Layer Security) Arquitetura ● Core --> streaming de XML ● Jingle --> comunicação SIP Protocolo de Iniciação de Sessão, permite criar, configurar e gerir as sessões de comunicação. ● Cliente de chat. ● Multi-User-Chat (MUC) (permite mensagens similar ao IRC) ● PubSub --> Hub de comunicação ● BOSH --> Binding para tráfego HTTP. Padronização ● RFC 6120: XMPP Core (núcleo) ● RFC 6121: XMPP Mensageiro instantaneo ● RFC 7622: XMPP formato de endereços ● XEP-0166: Jingle ● XEP-0167: Jingle RTP Sessions ● XEP-0176: Jingle ICE-UDP Transport Method ● XEP-0177: Jingle Raw UDP Transport Method ● XEP-0181: Jingle DTMF ● XEP-0234: Jingle File Transfer ● XEP-0045: Multi-User Chat ● XEP-0249: Direct MUC Invitations ● XEP-0272: Multiparty Jingle Implementações existentes: Clientes Servidores de VoIP: ● Coccinella Asterisk FreeSWITCH ● Gajim Yate ● Jitsi ● Movim ● Pandion ● Pidgin ● Telepathy ● Yate Porquê usar XMPP ⦁ O XMPP é descentralizado. Não há um ponto de falha para as comunicações. ⦁ O XMPP é um protocolo aberto. Nenhuma empresa controla o protocolo, e qualquer pessoa pode propor/implementar melhorias. O XMPP também pode se comunicar com todos os principais sistemas de IM proprietários por meio de gateways públicos. ⦁ Você pode fazer com que seu endereço de MI seja igual ao seu endereço de email (@ example.com). Porquê usar XMPP ⦁ Prós ⦁ Esquema de endereçamento para reconhecer dispositivos na rede ⦁ Arquitetura cliente-servidor ⦁ Descentralizado ⦁ Flexível ⦁ Padrões abertos e formalizados Porquê usar XMPP Contras ⦁ Mensagens baseadas em texto e nenhuma provisão para criptografia de ponta a ponta ⦁ Nenhuma provisão para qualidade de serviço ⦁ O fluxo de dados geralmente é superior a 70% do servidor de protocolo XMPP, dos quais quase 60% são repetidos; o protocolo XMPP possui uma grande sobrecarga de dados para vários destinatários ⦁ Ausência de dados binários ⦁ Escopo limitado para estabilidade Declara a lib Inicializa o componente Cria a instância do cliente Envia mensagens Libera a instância do cliente.

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Universidad Pol Facultad D Trabajo
UNIVERSIDAD POLITÉCNICA DE MADRID FACULTAD DE INFORMÁTICA TRABAJO FINAL DE CARRERA ESTUDIO DEL PROTOCOLO XMPP DE MESAJERÍA ISTATÁEA, DE SUS ATECEDETES, Y DE SUS APLICACIOES CIVILES Y MILITARES Autor: José Carlos Díaz García Tutor: Rafael Martínez Olalla Madrid, Septiembre de 2008 2 A mis padres, Francisco y Pilar, que me empujaron siempre a terminar esta licenciatura y que tanto me han enseñado sobre la vida A mis abuelos (q.e.p.d.) A mi hijo icolás, que me ha dejado terminar este trabajo a pesar de robarle su tiempo de juego conmigo Y muy en especial, a Susana, mi fiel y leal compañera, y la luz que ilumina mi camino Agradecimientos En primer lugar, me gustaría agradecer a toda mi familia la comprensión y confianza que me han dado, una vez más, para poder concluir definitivamente esta etapa de mi vida. Sin su apoyo, no lo hubiera hecho. En segundo lugar, quiero agradecer a mis amigos Rafa y Carmen, su interés e insistencia para que llegara este momento. Por sus consejos y por su amistad, les debo mi gratitud. Por otra parte, quiero agradecer a mis compañeros asesores militares de Nextel Engineering sus explicaciones y sabios consejos, que sin duda han sido muy oportunos para escribir el capítulo cuarto de este trabajo. Del mismo modo, agradecer a Pepe Hevia, arquitecto de software de Alhambra Eidos, los buenos ratos compartidos alrrededor de nuestros viejos proyectos sobre XMPP y que encendieron prodigiosamente la mecha de este proyecto. A Jaime y a Bernardo, del Ministerio de Defensa, por haberme hecho descubrir las bondades de XMPP.
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