Refactor CORS handler (#28587) (#28611)

Backport #28587, the only conflict is the test file.

The CORS code has been unmaintained for long time, and the behavior is
not correct.

This PR tries to improve it. The key point is written as comment in
code. And add more tests.

Fix #28515
Fix #27642
Fix #17098

(cherry picked from commit 7a2786ca6cd84633784a2c9986da65a9c4d79c78)
This commit is contained in:
wxiaoguang 2023-12-25 21:01:24 +08:00 committed by Earl Warren
parent 0b872a403d
commit 265cd70bdb
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11 changed files with 131 additions and 78 deletions

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@ -33,7 +33,7 @@ func FileHandlerFunc() http.HandlerFunc {
assetFS := AssetFS()
return func(resp http.ResponseWriter, req *http.Request) {
if req.Method != "GET" && req.Method != "HEAD" {
resp.WriteHeader(http.StatusNotFound)
resp.WriteHeader(http.StatusMethodNotAllowed)
return
}
handleRequest(resp, req, assetFS, req.URL.Path)