Igama le- WAP linemisho emibili ehlukile emhlabeni wokuxhumana okungenazintambo. I-WAP imele kokubili i- Wireless Access Point kanye ne- Wireless Application Protocol .
Amaphuzu okufinyelela okungenantambo
Iphoyinti lokufinyelela elingenazintambo liyidivayisi exhuma inethiwekhi yendawo engenazintambo (ngokuvamile i- Wi-Fi ) yendawo kwinethiwekhi yocingo (ngokuvamile Ethernet ).
Ukuze uthole ulwazi oluthe xaxa, bheka - Ayini amaphuzu okufinyelela okungenantambo?
Uhlelo Lokusebenza Lwezingenantambo
I-Protocol Wireless Application yachazwa ukusekela ukulethwa kokuqukethwe kumadivayisi weselula phezu kwamanethiwekhi angenantambo. Okuphambili ekwakhiweni kwe-WAP kwakuyi-stack yenethiwekhi esekelwe ku- model ye-OSI . I-WAP isebenze izinhlelo eziningi eziningana zokuxhumana zenethiwekhi ezenza imisebenzi efana kodwa kodwa ehluke kwizinhlelo zeWeb eziwaziwa kakhulu i- HTTP , TCP , ne- SSL .
I-WAP ihlanganise imibono yeziphequluli, amaseva , ama- URL , kanye nezindlela zenethiwekhi . Iziphequluli ze-WAP zakhiwe kumadivayisi amancane eselula njengamafoni, ama-pagers nama-PDA. Esikhundleni sokuthuthukisa okuqukethwe ku-HTML naseJavaScript, abathuthukisi be-WAP basebenzisa i-WML ne-WMLScript. Ukuvinjelwa kokubili kokuvinjelwa kwenethiwekhi yeselula nokucubungula amandla wamadivayisi, i-WAP isekela kuphela i-subset encane yokusetshenziswa kwe-PC. Izinhlelo ezijwayelekile zalezi zinsuku zaziyi-feed feeds, izingcaphuno zesitoko, nokuthumela imiyalezo.
Ngenkathi inombolo ehloniphekile yamadivaysi anikwe amandla we-WAP ayekhona emakethe kusukela ngo-1999 kuya phakathi nonyaka ka-2000, akuzange kuthathe isikhathi eside ukuthi ubuchwepheshe bube bukhuni ngokuthuthukiswa kobuchwepheshe obusheshayo ekuxhumaneni kwezintambo kanye nama-smartphone.
I-WAP Model
I-model ye-WAP inezinhlaka eziyisihlanu emgqeni, kusukela phezulu kuya phansi: Isicelo, iSession, Transaction, Security and Transport.
Isendlalelo sesicelo se-WAP yi-Wireless Application Environment (WAE). U-WAE isekela ngokuqondile ukuthuthukiswa kwesicelo se-WAP ngolimi lwe-Wireless Markup (WML) esikhundleni se-HTML ne-WMLScript esikhundleni se-JavaScript. I-WAE ihlanganisa futhi isiNgisi sokungena nge-Wireless Telephony (WTAI, noma i-WTA okwesikhashana) esinikeza isikhombimsebenzisi sokuhlela kumafoni ukuqala izingcingo, ukuthumela imiyalezo kanye nezinye izinethiwekhi zokuxhumana.
Isendlalelo seseshini ye-WAP yi-Protocol Wireless Session (WSP). I-WSP iyilingana ne-HTTP ye-WAP iziphequluli. I-WAP ihlanganisa iziphequluli nezinsizakalo njengeWebhu, kodwa i-HTTP ayisona isenzo esiwusizo se-WAP ngenxa yokungasebenzi kahle kwesikhala. I-WSP igcina umkhawulokudonsa oyigugu kumaxhumanisi angenantambo; ikakhulukazi, i-WSP isebenza ngemininingwane eqondile kanambambili lapho i-HTTP isebenza ngokuyinhloko ngemininingwane yombhalo.
I-Wireless Transaction Protocol (WTP) inikeza izinsizakalo zezinga lokuthengiselana kokuthutha okuthembekile nokungathembeki. Ivimbela amakhophi aphindwe kabili amaphakethe ekutholeni indawo, futhi isekela ukubuyisa kabusha, uma kunesidingo, uma kwenzeka amaphakethe ehla. Kulokhu, i-WTP iyafana ne-TCP. Nokho, i-WTP nayo ihluke ku-TCP. I-WTP iyinhloko ye-TCP ehlanganisiwe eyenza ukusebenza okunye okuvela kwinethiwekhi.
Ukuphepha kwe-Layer Transaction Layer (WTLS) inikeza ukuqinisekiswa nokusebenza kokubethela okufana ne-Secure Sockets Layer (SSL) ekuxhumaneni kwenethiwekhi. Njenge-SSL, i-WTLS iyakhethwa futhi iyasetshenziswa kuphela lapho iseva yokuqukethwe idinga khona.
I-Wireless Datagram Protocol (WDP) isebenzisa isendlalelo esingaphansi kwezinhlelo zenethiwekhi eziphansi; yenza imisebenzi efana ne-UDP. I-WDP ingqimba engezansi yekhodi ye-WAP, kodwa ayisebenzisi amandla okuxhumana ngokomzimba noma kwedatha. Ukwakha isevisi ephelele yenethiwekhi, isitaki se-WAP kufanele sisebenze kwesinye isikhombimsebenzisi sezinga eliphansi kodwa hhayi ingxenye yesimodeli. Lezi zixhumanisi, ezibizwa ngokuthi izinsizakalo zokuphatha noma abaphathi , zingaba yi-IP-based noma engeyona i-IP esekelwe.