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fileserver: Don't repeat error for invalid method inside error context (#5705)

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Francis Lavoie 2023-08-09 13:12:09 -04:00 committed by GitHub
parent 6cdcc2a782
commit a8492c064d
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1 changed files with 7 additions and 2 deletions
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9
modules/caddyhttp/fileserver/staticfiles.go
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@ -418,8 +418,13 @@ func (fsrv *FileServer) ServeHTTP(w http.ResponseWriter, r *http.Request, next c
// GET and HEAD, which is sensible for a static file server - reject
// any other methods (see issue #5166)
if r.Method != http.MethodGet && r.Method != http.MethodHead {
w.Header().Add("Allow", "GET, HEAD")
return caddyhttp.Error(http.StatusMethodNotAllowed, nil)
// if we're in an error context, then it doesn't make sense
// to repeat the error; just continue because we're probably
// trying to write an error page response (see issue #5703)
if _, ok := r.Context().Value(caddyhttp.ErrorCtxKey).(error); !ok {
w.Header().Add("Allow", "GET, HEAD")
return caddyhttp.Error(http.StatusMethodNotAllowed, nil)
}
}
// set the Etag - note that a conditional If-None-Match request is handled