woodpecker/server/middleware/options.go

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package middleware
import (
"net/http"
"github.com/zenazn/goji/web"
)
// Options automatically return an appropriate "Allow" header when the
// request method is OPTIONS and the request would have otherwise been 404'd.
func Options(c *web.C, h http.Handler) http.Handler {
fn := func(w http.ResponseWriter, r *http.Request) {
if r.Method == "OPTIONS" {
w.Header().Set("Access-Control-Allow-Origin", "*")
w.Header().Set("Access-Control-Allow-Methods", "GET,POST,PUT,DELETE,OPTIONS")
w.Header().Set("Access-Control-Allow-Headers", "Authorization")
w.Header().Set("Allow", "HEAD,GET,POST,PUT,DELETE,OPTIONS")
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusOK)
return
}
h.ServeHTTP(w, r)
}
return http.HandlerFunc(fn)
}