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Cross-origin resource sharing (CORS)

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Cross-origin resource sharing (CORS) is a mechanism that allows restricted resources on a web page to be accessed from another domain outside the domain from which the first resource was served. CORS also relies on a mechanism by which browsers make a "preflight" request to the server hosting the cross-origin resource, in order to check that the server will permit the actual request. In that preflight, the browser sends headers that indicate the HTTP method and headers that will be used in the actual request. For security reasons, browsers restrict cross-origin HTTP requests initiated from scripts. For example, fetch() and XMLHttpRequest follow the same-origin policy. This means that a web application using those APIs can only request resources from the same origin the application was loaded from unless the response from other origins includes the right CORS headers.

Resource types

  • Invocations of fetch() or XMLHttpRequest
  • Web Fonts (for cross-domain font usage in @font-face within CSS), so that servers can deploy TrueType fonts that can only be loaded cross-origin and used by websites that are permitted to do so
  • WebGL textures
  • Images/video frames drawn to a canvas using drawImage()
  • CSS shapes from images
  • scripts
  • iframes

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Temgi / Microsservicos_SpringCloud

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App de RH com Cadastro de Trabalhadores dividido em Diversos Microsserviços Java com Spring Cloud, proporcionando Balanceamento de Carga, Comunicação Rest com JSON, API Gateway, Service Discovery, Serviços Isolados em Containers, Configuração Centralizada, Autenticação OAuth, Autorização com Token JWT de Microsserviços, CORS e RestTemplate.

docker cors oauth2 spring-boot maven api-gateway rest-api docker-image spring-cloud postgresql jwt-token spring-cloud-netflix hystrix ribbon apache-tomcat eureka-discovery-service feign-client java-11 zuul-api-gateway
  • Updated Aug 2, 2023
  • Java

RishabhShrivastav758 / BankingPortalBackEnd

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Banking Web Portal: A collection of endpoints are offered by the banking portal API for the management of user accounts, fund transfers, and transactions. The aim of this project is to make banking activities for users more secure and effective.

java cors validation maven spring-security hibernate mysql-database springboot jwt-authentication csrf-protection crud-api exception-handling springdatajpa datastructures-algorithms banking-system bankingtransaction
  • Updated Jun 5, 2024
  • Java

Created by WHATWG, Matt Oshry, Brad Porter, Michael Bodell, Tellme Networks

Released May 2006

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12 followers
Website
fetch.spec.whatwg.org/#http-cors-protocol
Wikipedia
Wikipedia

Related Topics

ajax content-security-policy jsonp xhr