Golang solves cross-domain

import "github.com/rs/cors"

router := gin.Default()
router.GET("/ping", func(c *gin.Context){
    
    
    c.String(200, "pong")
})
s := &http.Server{
    
    
		Addr:           ":8812",
		Handler:        cors.AllowAll().Handler(router),
		ReadTimeout:    60 * time.Second,
		WriteTimeout:   60 * time.Second,
		MaxHeaderBytes: 1 << 21,
	}