Facebook C# SDK - Problem with Iframe app and Safari Cookies

Question

I'm building an Iframe canvas application for Facebook. I'm not using the Javascript SDK.

This is the code I'm using, and it works well in all browsers except for Safari.

protected FacebookApp app;

protected CanvasAuthorizer cauth;

Response.AddHeader("p3p", "CP=\"IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT\""); app = new FacebookApp(); cauth = new CanvasAuthorizer(app); if (!cauth.IsAuthorized()) { myAuth auth = new myAuth(); myAuth.Authorize(app, Request, Response, perms); }

    if (cauth.Authorize())
    {

// Do my app stuff here }

public class myAuth
{
    public static void Authorize(FacebookApp fbApp, System.Web.HttpRequest request, System.Web.HttpResponse response, string perms)
    {
        Authorize(fbApp, request, response, perms, null);
    }

    public static void Authorize(FacebookApp fbApp, System.Web.HttpRequest request, System.Web.HttpResponse response, string perms, string redirectUrl)
    {
        Uri url = fbApp.GetLoginUrl();

        NameValueCollection nvc = System.Web.HttpUtility.ParseQueryString(url.Query);

        if (!string.IsNullOrEmpty(perms))
            nvc.Add("req_perms", perms);

        if (!string.IsNullOrEmpty(redirectUrl))
            nvc["next"] = GetAppRelativeUrl(redirectUrl);
        else if (request.QueryString.Count > 0)
            nvc["next"] = GetAppRelativeUrl(request.Path.Replace(request.ApplicationPath, string.Empty).Replace(request.ApplicationPath.ToLower(), string.Empty) + "?" + request.QueryString);
        else
            nvc["next"] = GetAppRelativeUrl(request.Path.Replace(request.ApplicationPath, string.Empty).Replace(request.ApplicationPath.ToLower(), string.Empty));

        UriBuilder ub = new UriBuilder(url);
        ub.Query = nvc.ToString();

        string content = CanvasUrlBuilder.GetCanvasRedirectHtml(ub.Uri);
        response.ContentType = "text/html";
        response.Write(content);
        response.End();
    }

    public static string GetAppRelativeUrl(string url)
    {
        return CanvasSettings.Current.CanvasPageUrl.ToString();
    }
}

I read about Safari not allowing third party cookies, and I figure that's where the problem lies. My question is wheter there's a way to handle this using the SDK, or what my options are.

Regards, Anders Pettersson

score 0 · Answer 1 · answered Jul 07 '12 at 07:58

here I am getting same problem but now I got solution for safari..

Just change validation mode in web.config

<system.web>

<pages enableViewState="true" validateRequest="false" />
<httpRuntime requestValidationMode="2.0"/>
<!--
 Enable this code if you get still problem
<sessionState cookieless="true" regenerateExpiredSessionId="true" />-->

score 0 · Answer 2 · answered Jan 31 '11 at 12:18

0

I've had some problems with Safari changing the case of data sent in HTTP headers... make sure any parsing/comparing you are doing is case insensitive.

answered Jan 31 '11 at 12:18

Iain Ballard

4,433
34
39

score 0 · Answer 3 · edited May 23 '17 at 11:47

0

See here: Facebook Iframe App with multiple pages in Safari Session Variables not persisting

edited May 23 '17 at 11:47

Community

1
1

answered Mar 12 '11 at 13:44

Fabrice

3,094
3
28
31

Facebook C# SDK - Problem with Iframe app and Safari Cookies

3 Answers3