06.HTTP & AJAX 19 décembre 2023 Développement web il3 HTTP & AJAX HE-Arc (DGR) 2022 HyperText Transfer Protocol • Protocole application : invention www en 1990 (v0.9) – Connexion, GET, réponse, fermeture • HTTP 1.0 (1996) – Entêtes de requête (Host, Referer, User-Agent, …) et réponse (Content-Type, Set- Cookie, Location, …) • HTTP 1.1 (1997) – Nouveaux entêtes (Keep-alive, pipelining, cache Host obligatoire • HTTP 2.01 (2015) – Binaire, multiplexage connexions, compression entêtes, push, … – Supporté par presque tous2 les navigateurs, une majorité de serveurs • HTTP 3.03 (2019) – UDP,

Cookie, Session 与HTTP请求 杨亮 Web基本流程 PC Mobile 服务器 （Apache） (IIS) 后端脚本 （PHP） （JSP） （ASP） 数据库 （MySQL） （Oracle） （Access） HTTP 请求 对应⽂文件 获取数据 返回数据 返回⻚页⾯面 返回⻚页⾯面 请求⻚页⾯面 服务器端 客户端 html css 如果⼀一家咖啡店，买五杯送⼀一杯 信息存在哪⾥里？ 超⽂文本传输协议 HTTP HyperText Transfer Protocol ⽆无状态 Cookie Session 头部 内容 （html） Cookie 保存在浏览器端的⽤用户数据，⽤用以进⾏行会话控制 浏览器端脚本(JavaScript)设定Cookie 服务器端程序(PHP)通过HTTP请求命令浏览器设定Cookie 浏览器向服务器发送请求时会附加上相应的Cookie value1 name2 value2 name3 value3 name4 value4 五⼤大要素：名字、值、域、路径、过期时间 $_COOKIE[name] 所有Cookie都是放到http头信息中 服务器 PHP 浏览器 Cookie Set-Cookie:user=stefyang Cookie:user=stefyang time() 当前时间 time()+60*60

minimalist WSGI library for building speedy web APIs and app backends. We like to think of Falcon as the Dieter Rams of web frameworks. When it comes to building HTTP APIs, other frameworks weigh you down with dependencies and unnecessary abstractions. Falcon cuts to the chase with a clean design that embraces HTTP and the REST architectural style. class CatalogItem(object): # ... @falcon.before(hooks.to_oid) clean and simple, I finally have the speed and flexibility I need!” “I feel like I’m just talking HTTP at last, with nothing in the middle. Falcon seems like the requests of backend.” “The source code

minimalist WSGI library for building speedy web APIs and app backends. We like to think of Falcon as the Dieter Rams of web frameworks. When it comes to building HTTP APIs, other frameworks weigh you down with dependencies and unnecessary abstractions. Falcon cuts to the chase with a clean design that embraces HTTP and the REST architectural style. class CatalogItem(object): # ... @falcon.before(hooks.to_oid) tiny server of mine and was ~40% faster with only 20 minutes of work.” “I feel like I’m just talking HTTP at last, with nothing in the middle. Falcon seems like the requests of backend.” “The source code

minimalist WSGI library for building speedy web APIs and app backends. We like to think of Falcon as the Dieter Rams of web frameworks. When it comes to building HTTP APIs, other frameworks weigh you down with dependencies and unnecessary abstractions. Falcon cuts to the chase with a clean design that embraces HTTP and the REST architectural style. class CatalogItem(object): # ... @falcon.before(hooks.to_oid) clean and simple, I finally have the speed and flexibility I need!” “I feel like I’m just talking HTTP at last, with nothing in the middle. Falcon seems like the requests of backend.” “The source code

minimalist WSGI library for building speedy web APIs and app backends. We like to think of Falcon as the Dieter Rams of web frameworks. When it comes to building HTTP APIs, other frameworks weigh you down with dependencies and unnecessary abstractions. Falcon cuts to the chase with a clean design that embraces HTTP and the REST architectural style. class CatalogItem(object): # ... @falcon.before(hooks.to_oid) clean and simple, I finally have the speed and flexibility I need!” “I feel like I’m just talking HTTP at last, with nothing in the middle. Falcon seems like the requests of backend.” “The source code

minimalist WSGI library for building speedy web APIs and app backends. We like to think of Falcon as the Dieter Rams of web frameworks. When it comes to building HTTP APIs, other frameworks weigh you down with dependencies and unnecessary abstractions. Falcon cuts to the chase with a clean design that embraces HTTP and the REST architectural style. class CatalogItem(object): # ... @falcon.before(hooks.to_oid) clean and simple, I finally have the speed and flexibility I need!” “I feel like I’m just talking HTTP at last, with nothing in the middle. Falcon seems like the requests of backend.” “The source code

Prefix Routes Plugin Routing Creating Links to Plugin Routes SEO-Friendly Routing Matching Specific HTTP Methods Matching Specific Hostnames Routing File Extensions Route Scoped Middleware Grouping Middleware Request Conditions Session Data Host and Domain Name Reading the HTTP Method Restricting Which HTTP method an Action Accepts Reading HTTP Headers Trusting Proxy Headers Checking Accept Headers Reading Cookies Setting Headers Setting the Body Setting the Character Set Interacting with Browser Caching Fine Tuning HTTP Cache Setting Cookies Setting Cross Origin Request Headers (CORS) Common Mistakes with Immutable

minimalist WSGI library for building speedy web APIs and app backends. We like to think of Falcon as the Dieter Rams of web frameworks. When it comes to building HTTP APIs, other frameworks weigh you down with dependencies and unnecessary abstractions. Falcon cuts to the chase with a clean design that embraces HTTP and the REST architectural style. class CatalogItem(object): # ... @falcon.before(hooks.to_oid) tiny server of mine and was ~40% faster with only 20 minutes of work.” “I feel like I’m just talking HTTP at last, with nothing in the middle. Falcon seems like the requests of backend.” “The source code

minimalist WSGI library for building speedy web APIs and app backends. We like to think of Falcon as the Dieter Rams of web frameworks. When it comes to building HTTP APIs, other frameworks weigh you down with dependencies and unnecessary abstractions. Falcon cuts to the chase with a clean design that embraces HTTP and the REST architectural style. class CatalogItem(object): # ... @falcon.before(hooks.to_oid) clean and simple, I finally have the speed and flexibility I need!” “I feel like I’m just talking HTTP at last, with nothing in the middle. Falcon seems like the requests of backend.” “The source code