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ID:34588175
大小:2.51 MB
页数:403页
时间:2019-03-08
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1、InstantMessaginginJavaInstantMessaginginJavaTheJabberProtocolsIAINSHIGEOKAMANNINGGreenwich(74°w.long.)ForelectronicinformationandorderingofthisandotherManningbooks,gotowww.manning.com.Thepublisheroffersdiscountsonthisbookwhenorderedinquantity.Formoreinformation,pleasecontact:SpecialSal
2、esDepartmentManningPublicationsCo.209BruceParkAvenueFax:(203)661-9018Greenwich,CT06830email:orders@manning.com©2002byManningPublicationsCo.Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmitted,inanyformorbymeanselectronic,mechanical,photocopyin
3、g,orotherwise,withoutpriorwrittenpermissionofthepublisher.Manyofthedesignationsusedbymanufacturersandsellerstodistinguishtheirproductsareclaimedastrademarks.Wherethosedesignationsappearinthebook,andManningPublicationswasawareofatrademarkclaim,thedesignationshavebeenprintedininitialcaps
4、orallcaps.Recognizingtheimportanceofpreservingwhathasbeenwritten,itisManning’spolicytohavethebookstheypublishprintedonacid-freepaper,andweexertourbesteffortstothatend.ManningPublicationsCo.Copyeditor:LoisPatterson209BruceParkAvenueTypesetter:ShanYoungGreenwich,CT06830Coverdesigner:Lesl
5、ieHaimesISBN1-930110-46-4PrintedintheUnitedStatesofAmerica12345678910-VHG05040302ThisbookisdedicatedtotheJabbercommunity:innovation,insightandfun.Whocouldaskforanythingmore?contentsprefacexiiiaboutthisbookxvauthoronlinexxiacknowledgmentsxxiiaboutthecoverillustrationxxiiiPARTIINSTANTMES
6、SAGINGPRIMER................11IntroductiontoIMconcepts31.1Backgroundonmessaging4AbriefhistoryofJabber11■GoalsoftheJabberproject121.2WhatisJabber?13Jabber’sXML-baseddataformats14■Jabber’ssimplearchitecture18■Jabber’sfourcoreconcepts211.3BenefitsoftheJabberprotocols271.4DrawbacksoftheJab
7、berprotocols281.5Conclusion29viiicontents2Jabbertechnicalfundamentals312.1TheJabbermessagingmodel32Benefits35■Drawbacks36■Relyingondistributedservers38■HowJabberpacketroutingworks39Step-by-step:amessage’spaththroughJabber442.2ThecoreJabberprotocols45Message:Deliveringdata45■Presence:
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