Web Standards

CORS Preflight

An automatic OPTIONS request sent by browsers before cross-origin requests with non-simple methods or headers, checking if the server allows the actual request.

관련 프로토콜

HTTP

가이드에서 언급됨

Complete Guide to HTTP Methods: GET, POST, PUT, PATCH, DELETE HTTP Fundamentals

RFC 7231/9110: HTTP Method Semantics — Safe, Idempotent, and Cacheable Protocol Deep Dives

관련 시나리오

403 Forbidden Due to CORS Misconfiguration HTTP

관련 항목

Request Method (HTTP Verb) HTTP Concepts

CORS (Cross-Origin Resource Sharing) Security

Same-Origin Policy Security

Origin Web Standards