yanzhenjie/AndServer

浏览器如何向AndServer的接口发起跨域请求？

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#500 opened on Jun 16, 2023

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 (2 comments) (0 reactions) (0 assignees)Java (3,443 stars) (723 forks)batch import
help wanted

Description

启动了vue的浏览器本地服务向另一个机子的AndServer的接口发起跨域请求，此时浏览器提前发起了一个OPTIONS预检请求，响应返回‘CORS ERROR’的错误。 想设置响应头的CORS，但是setHeader无效，响应头没有加上'access-allow-origin'这样的头。 另外如何把响应头的'connection:close'改为keep-alive？

Contributor guide

Tech stack
javaandroid
Domain
backendapi
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Java programmingAndroid developmentHTTP CORS
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the AndServer source code to understand why setHeader is not adding CORS headers. Look at the HTTP response handling chain in the framework. Check if there is a need to implement a CORS filter or modify the way headers are set. Also explore how to change the 'Connection' header to keep alive.