/
middleware.go
executable file
·57 lines (52 loc) · 1.81 KB
/
middleware.go
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package engine
import (
"fmt"
"net/http"
"strings"
)
func CORSAcceptAll(next http.Handler) http.Handler {
return http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
if req.Method == "OPTIONS" {
rw.Header().Set("Access-Control-Allow-Methods", "*")
rw.Header().Set("Access-Control-Allow-Origin", "*")
rw.Header().Set("Access-Control-Allow-Headers", "X-Requested-With, Content-Type, Authorization")
rw.WriteHeader(200)
return
} else {
rw.Header().Set("Access-Control-Allow-Methods", "*")
rw.Header().Set("Access-Control-Allow-Origin", "*")
rw.Header().Set("Access-Control-Allow-Headers", "*")
next.ServeHTTP(rw, req)
}
})
}
type CORSConfig struct {
AllowedMethods []string
AllowedOrigins []string
AllowedHeaders []string
}
var AllowAllConfig = &CORSConfig{
AllowedMethods: []string{"*"},
AllowedOrigins: []string{"*"},
AllowedHeaders: []string{"Authorization", "X-Requested-With"},
}
func CORSMiddleware(config *CORSConfig) MiddlewareFunc {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
fmt.Println(req.Method)
switch {
case req.Method == "OPTIONS":
rw.Header().Set("Access-Control-Allow-Methods", strings.Join(config.AllowedMethods, ", "))
rw.Header().Set("Access-Control-Allow-Origin", strings.Join(config.AllowedOrigins, ", "))
rw.Header().Set("Access-Control-Allow-Headers", strings.Join(config.AllowedHeaders, ", "))
rw.WriteHeader(200)
return
default:
rw.Header().Set("Access-Control-Allow-Methods", strings.Join(config.AllowedMethods, ", "))
rw.Header().Set("Access-Control-Allow-Origin", strings.Join(config.AllowedOrigins, ", "))
rw.Header().Set("Access-Control-Allow-Headers", strings.Join(config.AllowedHeaders, ", "))
next.ServeHTTP(rw, req)
}
})
}
}