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21 lines
563 B
Go
21 lines
563 B
Go
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package main
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import "net/http"
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func allowCORS(fn func(w http.ResponseWriter, r *http.Request)) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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if origin := r.Header.Get("Access-Control-Allow-Origin"); origin == "" {
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w.Header().Set("Access-Control-Allow-Origin", "*")
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}
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w.Header().Set("Access-Control-Allow-Headers", "*")
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if origin := r.Header.Get("Origin"); origin != "" {
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if r.Method == "OPTIONS" && r.Header.Get("Access-Control-Request-Method") != "" {
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// set preflight options
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return
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}
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}
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fn(w, r)
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}
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}
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