Question

I a have a sample app, hosted on AppHarbor and now want to integrate authorization through facebook. So i downloaded nugget Facebook.Web.Mvc package to implement it.

阅读辅导后,控制器有以下方法:

 public ActionResult Login(string returnUrl)
    {
        var oauthClient = new FacebookOAuthClient(FacebookApplication.Current) { RedirectUri = GetFacebookRedirectUri() };


        if (!string.IsNullOrWhiteSpace(returnUrl))
        {
            returnUrl = Url.Action("Index", "Facebook");
        }

        dynamic parameters = new ExpandoObject();
        parameters.scope = ExtendedPermissions;

        var state = new { csrf_token = CalculateMD5Hash(Guid.NewGuid().ToString()), return_url = returnUrl };
        parameters.state = Base64UrlEncode(Encoding.UTF8.GetBytes(JsonSerializer.Current.SerializeObject(state)));
        SetFacebookCsrfToken(state.csrf_token);

        string s = oauthClient.GetLoginUrl(parameters).AbsoluteUri;

        ViewBag.FacebookLoginUrl = s;
        //new LogEvent(s).Raise();

        return View(new AccountModel());
    }

观点:

<a href="@ViewBag.FacebookLoginUrl" id="lUrl">
<div class="fblogin"></div>

In localhost this works for me. But when i upload it to appharbor, i see, that generated link indicates to address + port 16013 (as support told always random port). So clicking it shows me facebook login window, than blank page.

我用手法将我的补给环境配置到该港口,但没有帮助。

Also i tried to access my site through this port - nothing.

然后,通过舱位将港口数量改为80个,这也无助于。

you have had such problems?

Answer 1

I m not familiar with the Facebook api, but I ve had a similar problem. I suspect that the returnUrl value being passed in is incorrect. It probably contains a port number that AppHarbor uses internally for load balancing.

See this article on how to create a public url for AppHarbor: http://support.appharbor.com/kb/getting-started/workaround-for-generating-absolute-urls-without-port-number

然后确保你返回的价值乌尔都语是公开的。

Answer 2

您现在可以制定有效解决这一问题的<代码>aspnet:UseHost HeaderForRequestUrl appSetting to true。可以通过在你的申请中添加一个可与相应的关键和价值相匹配的配置。

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