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.

相关协议

HTTP

在指南中提及

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

相关场景

403 Forbidden Due to CORS Misconfiguration HTTP

另请参阅

Request Method (HTTP Verb) HTTP Concepts

CORS (Cross-Origin Resource Sharing) Security

Same-Origin Policy Security

Origin Web Standards