surveyService/middleware/cors.go

package middleware

import (
	"net/http"

	"github.com/gin-gonic/gin"
)

func Cors() gin.HandlerFunc {
	return func(c *gin.Context) {
		c.Header("Access-Control-Allow-Origin", "*")
		c.Header("Access-Control-Allow-Headers", c.Request.Header.Get("Access-Control-Request-Headers"))
		c.Header("Access-Control-Allow-Methods", "POST, GET, OPTIONS")
		c.Header("Access-Control-Expose-Headers", "Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers, Content-Type")
		c.Header("Access-Control-Allow-Credentials", "false")

		if c.Request.Method == "OPTIONS" {
			c.AbortWithStatus(http.StatusOK)
			return
		}
		c.Next()
	}
}