{"id":104506,"date":"2022-06-25T15:36:47","date_gmt":"2022-06-25T13:36:47","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/redbean-2-0-platforma-dlya-web-prilozhenij-upakovannyh-v-universalnyj-ispolnyaemyj-zip-arhiv"},"modified":"2022-06-25T15:36:47","modified_gmt":"2022-06-25T13:36:47","slug":"redbean-2-0-platforma-dlya-web-prilozhenij-upakovannyh-v-universalnyj-ispolnyaemyj-zip-arhiv","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/redbean-2-0-platforma-dlya-web-prilozhenij-upakovannyh-v-universalnyj-ispolnyaemyj-zip-arhiv","title":{"rendered":"Redbean 2.0 - en platform til webapplikationer, pakket i et universelt eksekverbart ZIP-arkiv.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Udgivelsen af Redbean 2.0 er blevet pr\u00e6senteret, som tilbyder en webserver, der muligg\u00f8r levering af webapplikationer i form af en universel k\u00f8rbar fil, der kan udf\u00f8res i Linux, Windows, MacOS, FreeBSD, NetBSD og OpenBSD. Alle ressourcer relateret til webapplikationen og serveren komprimeres i \u00e9n k\u00f8rbar fil, som samtidig er kompatibel med ZIP-arkivformatet og tillader brugen af zip-v\u00e6rkt\u00f8jet til at tilf\u00f8je yderligere filer. Muligheden for at k\u00f8re \u00e9n fil p\u00e5 forskellige operativsystemer og dens genkendelse som et ZIP-arkiv opn\u00e5s gennem manipulation af headerne i de k\u00f8rbare filer og binding til det multiplatforms standard C-bibliotek Cosmopolitan. Koden til projektet distribueres under ISC-licensen.      <\/p>\n<p>Projektets id\u00e9 er at levere en enkelt eksekverbar fil &#171;redbean.com&#187; med en indbygget webserver. Udvikleren af webapplikationen kan ved hj\u00e6lp af zip-v\u00e6rkt\u00f8jet tilf\u00f8je HTML- og Lua-filer til denne fil og f\u00e5 en selvst\u00e6ndig webapplikation, der kan k\u00f8re p\u00e5 alle popul\u00e6re operativsystemer uden at kr\u00e6ve, at et separat webserverprogram startes i systemet.         <\/p>\n<p>N\u00e5r den resulterende k\u00f8rbare fil startes, bruges den indbyggede webserver til at tilg\u00e5 den gemte webapplikation i filen. Som standard er handleren knyttet til localhost, men serveren kan ogs\u00e5 anvendes som en almindelig offentlig webserver (for eksempel betjener denne server projektets hjemmeside). Den indbyggede webserver underst\u00f8tter adgang via HTTPS og kan k\u00f8re med sandbox-isolering, hvilket g\u00f8r det muligt at kontrollere, hvilke systemgr\u00e6nseflader der tilg\u00e5s. For at styre serverens drift under udf\u00f8relsen gives der et interaktivt REPL-interface (baseret p\u00e5 Lua REPL og biblioteket bestline, en pendant til GNU Readline), der giver mulighed for at \u00e6ndre processtatus i interaktiv tilstand.      <\/p>\n<p>Det p\u00e5st\u00e5s, at webserveren kan behandle over en million anmodninger pr. sekund p\u00e5 en almindelig pc ved at returnere indhold, der er komprimeret med gzip-metoden. Den h\u00f8je ydeevne skyldes, at zip og gzip bruger et f\u00e6lles format, s\u00e5 dataene returneres uden at blive repakket fra allerede komprimerede omr\u00e5der i zip-filen. Desuden, da den eksekverbare fil er lavet ved hj\u00e6lp af statisk binding og har en lille st\u00f8rrelse, medf\u00f8rer kald af funktionen fork n\u00e6sten ingen overhead ved placering i hukommelsen.       <\/p>\n<p>Ud over at h\u00e5ndtere statisk webindhold og udf\u00f8re JavaScript i browseren, kan logikken i webapplikationen udvides ved hj\u00e6lp af scripts p\u00e5 Lua-sprog, web-rammen Fullmoon og SQLite-database. Blandt de ekstra funktioner bem\u00e6rkes underst\u00f8ttelsen af hash-algoritmen argon2, muligheden for at bestemme IP-regionen ved hj\u00e6lp af MaxMind-databasen og adgang til Unix API-biblioteket Cosmopolitan. St\u00f8rrelsen p\u00e5 den grundl\u00e6ggende stak, der inkluderer webserveren, MbedTLS, Cosmopolitan, Lua og SQLite, er kun 1,9 MB.     <\/p>\n<p>Den universelle eksekverbare fil dannes ved at kombinere segmenter og overskrifter, der er specifikke for forskellige operativsystemer (PE, ELF, MACHO, OPENBSD, ZIP), i \u00e9n fil. For at muligg\u00f8re k\u00f8rsel af en enkelt eksekverbar fil i Windows og Unix-systemer anvendes et trick, hvor Windows PE-filer kodes som en shell-script, idet det udnyttes, at Thompson Shell ikke bruger script-mark\u00f8ren &#171;#!&#187;. Resultatet er en eksekverbar fil, hvor flere forskellige formater, der anvendes i Linux, BSD, Windows og macOS, er kombineret. $ curl https:\/\/redbean.dev\/redbean-demo-2.0.7.com &gt;redbean.com $ chmod +x redbean.com $ zip redbean.com hello.html $ zip redbean.com hello.lua $ .\/redbean.com -vv I2022-06-23T08:27:14+000767:redbean] (srvr) lytter http:\/\/127.0.0.1:8080 &gt;: venter p\u00e5 kommando\u2026 $ curl https:\/\/127.0.0.1:8080\/hello.html hello $ printf &#8216;GET \/hello.lua\n\n&#8217; | nc 127.0.0.1 8080 hello        <center>  <video id=\"video\"  controls=\"\" style=\"width: 700px; height: 350px; max-width:100%\"><source src=\"https:\/\/storage.googleapis.com\/justine\/redbean2\/redbean-2.0-demo.mp4\" type=\"video\/mp4\"><\/video><\/center>    <\/center><br \/>\n<br \/>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57407\">opennet.ru<\/a> 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