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30 lines
743 B
Go
30 lines
743 B
Go
4 years ago
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package rest
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import (
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"net/http"
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"strings"
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)
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const (
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allowOrigin = "Access-Control-Allow-Origin"
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allOrigin = "*"
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allowMethods = "Access-Control-Allow-Methods"
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allowHeaders = "Access-Control-Allow-Headers"
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headers = "Content-Type, Content-Length, Origin"
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methods = "GET, HEAD, POST, PATCH, PUT, DELETE"
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separator = ", "
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)
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func CorsHandler(origins ...string) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if len(origins) > 0 {
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w.Header().Set(allowOrigin, strings.Join(origins, separator))
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} else {
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w.Header().Set(allowOrigin, allOrigin)
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}
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w.Header().Set(allowMethods, methods)
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w.Header().Set(allowHeaders, headers)
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w.WriteHeader(http.StatusNoContent)
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})
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}
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