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tangled.org
1package middleware
2
3import "net/http"
4
5func CORS(next http.Handler) http.Handler {
6 return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
7 // Set CORS headers
8 w.Header().Set("Access-Control-Allow-Origin", "*")
9 w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
10 w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
11 w.Header().Set("Access-Control-Max-Age", "86400")
12
13 // Handle preflight requests
14 if r.Method == "OPTIONS" {
15 w.WriteHeader(http.StatusOK)
16 return
17 }
18
19 next.ServeHTTP(w, r)
20 })
21}