도메인을 넘는 통신기술 (CORS + Proxy Server = bsNet)
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W3C 표준인 CORS와 서버 Proxy를 사용해 Ajax의 타 도메인 자원 요청/응답을 구현한 bsNet이 어떻게 탄생되었고 어떻게 활용할 수 있는가 알아보았습니다.
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도메인을 넘는 통신기술 (CORS + Proxy Server = bsNet)
- 1. 쿠키랩 지용호
- 2. 이름 : 지용호 닉네임 : 지돌스타 (현)쿠키랩(http://cookilab.com) 사장 (현)천문노트 비영리민간단체 대표 (전)Adobe Community Champion (전)Adobe Community Professional Blog : http://blog.jidolstar.com Email : jidolstar@cookilab.com Facebook : http://facebook.com/jidolstar
- 3. 배경 기존 극복 방법 CORS bsNet 실무상 장점 예제 개선하면 좋은 기능
- 4. 한계 : Same Origin Policy에 의해 JavaScript는 기본적으로 다른 도메인의 자원에 접근이 불가 필요성 : JavaScript로 다른 도메인의 자원에 접근 할 필요성 있음 Same Origin Policy Asynchronous Javascript And XML
- 5. Same Origin Policy의 제약을 받지 않는 <script> 태그 내부를 이용한 JSONP Same Origin Policy의 제약을 받지 않는 서버 프로그램을 이용한 우회 Proxy JSONP HTML Page server2.example.com 우회 Proxy
- 6. XMLHttpRequest를 통해 도메인 간 자원 공유가 가능하도록 W3C에서 만든 표준 서비스 제공자 쪽에서도 CORS 처리를 해야함 JavaScript CORS 요청 코드 예 서비스 제공자 CORS 처리 코드 예 서비스 제공자 쪽에서 CORS 처리해두면 JavaScript로 외부 도메인 서비스 접근 가능 CORS 처리를 해두지 않은 외부 도메인 서비스는 접근 불가능
- 7. JavaScript는 CORS 처리가 되어 있는 외부 도메인의 Proxy에 요청을 하고, 그 Proxy가 서비스 제공자에게 요청을 해 응답을 받아 JavaScript에 회신 https://github.com/projectBS/bsNet 사용자 bsNet.js corsproxy.php 서비스 제공자 Domain A bsNet Domain B request Server request CORS request response response callback
- 8. 같은 도메인이나 타 도메인 구분없이 같은 도메인 으로 Request를 작성 JSONP나 Proxy등을 작성할 필요 없이 단일한 서 버에서 타도메인에 대한 통신을 인프라적으로 지 원 하이브리드 웹 개발 - html이 앱의 asset로 들어가면 CORS지원 필수 타사의 서비스 연동 개발 - 타사의 서버 제공하는 데이터를 클라이언트의 개발 환경에서 제약없이 쓸 수 있음
- 11. 감사합니다.