enter image description hereI am trying to implement Google sign in into my web forms page because we use G suite for business. basically I am using javascript to get the token then using ajax to post to the google api then I am looking at the HD claim to make sure they are apart of our domain and thne posting to the code behind the email and doing a lookup to get a user ID then setting the form cookie and trying to redirect to our defalut page. So we have a mvc app that I done this exact thing with and it works perfectly I just routed them to the controller. For some reason it just seems like I am not getting anything from my code behind code.
here is my javascript.
  <script>
        function onSignIn(googleUser) {
            debugger;
            const profile = googleUser.getBasicProfile();
            let boolRedirectUrl = false;
            const id_token = googleUser.getAuthResponse().id_token;
            const pathname = window.location.pathname;
            const url = window.location.href;
            let redirectPath = "";
            if (window.location.href.indexOf("ReturnUrl") > -1) {
                boolRedirectUrl = true;
                redirectPath = readQueryString("ReturnUrl");
            }
            const googleUrl = "https://www.googleapis.com/oauth2/v3/tokeninfo?id_token=" + id_token;
            $.ajax({
                url: googleUrl,
                dataType: 'json',
                data: '{}',
                contentType: 'application/json',
                success: (data, status, xhr) => {
                    const domain = data.hd;
                    const email = data.email;
                    if (domain === "kimbelmechanical.com") {
                        $.ajax({
                            url: "Login.aspx/GoogleLogin",
                            type: "POST",
                            data: { 'email': email },
                            success: (data, status, xhr) => {
                                //window.location.href = "Default.aspx"
                            },
                            error: (xhr, status, error) => {
                                console.log("I stopeed on the call to controller " + status);
                            }
                        });
                    }
                },
                error: (xhr, status, error) => {
                    console.log(status);
                }
            });
        };
        function readQueryString(key) {
            key = key.replace(/[*+?^$.\[\]{}()|\\\/]/g, "\\$&");
            var match = location.search.match(new RegExp("[?&]" + key + "=([^&]+)(&|$)"));
            return match && decodeURIComponent(match[1].replace(/\+/g, " "));
        }
    </script>
this is my c# code behind.
 [WebMethod]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
    public void GoogleLogin(string email)
    {
        string userID = "";
        using (var context = new KPDataContext(KP.Common.KPConnectionString))
        {
            var user = context.Employees.Where(p => p.Email == email);
            foreach (var e in user)
            {
                userID = e.Username;
            }
        }
        if (userID != "")
        {
            FormsAuthentication.SetAuthCookie(userID, false);
            Response.Redirect("~/Default.aspx", true);
        }
    }
if I redirect from the success to my default page it loads it default.aspx found but for some reason it does login.aspx?ReturnUrl=?default.aspx but stays on the login page so I am in a endless loop of loading the login page over and over.
