Gin SetCookie does not work

I am trying to set a cookie, but I am not getting it nor in Postman nor in browser.

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.
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cookie := &http.Cookie{
        Name:     credentials.EmailAddress,
        Value:    sessionKey,
        MaxAge:   600,
        Path:     "/",
        Domain:   "localhost",
        Secure:   false,
        HttpOnly: false,
    }

http.SetCookie(ctx.Writer, cookie)

SendResponse(ctx, Response{
    Status:  http.StatusOK,
    Message: "successfully logged in",
})
return

I get a response message that I successfully logged in, but there is no cookie. To be clear this is just a part of a handler, the code before this snippet is not important since everything is working except setting the cookie.

Comment From: sasidharansd

Hey @davidh16 , Alternatively you can also use gin to set and get cookie, works like a charm. Docs: https://gin-gonic.com/docs/examples/cookie/

Comment From: aarontanjaya

Have you checked for error messages in the "cookie" tab of the network call in devtools?

Comment From: Panici4

i think it is because the cookie name contains invalid rune(maybe @).

Comment From: acfuns

I think you are developing locally and have a front-end back-end split, so it's easy to run into CORS problems. This is a typical CORS problem. go get github.com/gin-contrib/cors middleware to let your back-end set up cross-domains. Remember that only by adding Allowcredials: True, the browser allows you to extract data from the Set-Cookie request header. so you search cors middeware doc.

Comment From: acfuns

  config := cors.DefaultConfig()
  config.AllowAllOrigins = []string{"http://localhost:3000"} // no set *
  config.Allowcredials = True
  router.Use(cors.New(config))