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Braintree test Request.Params always empty

I am implementing webhook test code and I am running into a problem.
After I POST a sample notification to my webhook listener the Params are not in the request:
Request.Params["bt_signature"]
Request.Params["bt_payload"]
So the listener fails.
Below is both my Post Webhook code and Listener code; I'm not sure if I'm using gateway.WebhookTesting.SampleNotification correctly.
POST Test Webhook
private async Task PostTestNotification()
{
try
{
using (var client = new HttpClient())
{
client.BaseAddress = new Uri("http://localhost:50709/");
var gateway = config.GetGateway();
// Create sample notification
Dictionary<String, String> sampleNotification = gateway.WebhookTesting.SampleNotification(
WebhookKind.SUBSCRIPTION_CHARGED_SUCCESSFULLY, "sub_id_1234"
);
// Convert sample notification to JSON
string payloadJson = JsonConvert.SerializeObject(sampleNotification);
// Create StringContent of json sample notificaiton
var data = new StringContent(payloadJson);
// data looks like this when debugging { "bt_payload":"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\n","bt_signature":"69r68j6hnzjpnq4j|508a7b4b3bbbe15c241c742331acfc5bacf37c54"}
// POST
HttpResponseMessage response = await client.PostAsync("webhooks/accept", data);
// RESPONSE
if (response.IsSuccessStatusCode == true)
{
// SUCCESS CONTENT
string resultJSON = await response.Content.ReadAsStringAsync();
}
else
{
// FAIL CONTENT
dynamic problem = await response.Content.ReadAsStringAsync();
}
}
}
catch (Exception ex)
{
//
Console.WriteLine("Exception: " + ex.Message);
}
}
Webhook LISTENER
// webhooks/accept endpoint
public async Task<ActionResult> accept()
{
try
{
var gateway = config.GetGateway();
if (Request.HttpMethod == "POST")
{
var bt_signature = Request.Params["bt_signature"]; <<<<<<< ALWAYS EMPTY >>>>>>>>>
var bt_payload = Request.Params["bt_payload"]; <<<<<<< ALWAYS EMPTY >>>>>>>>>
WebhookNotification webhookNotification = gateway.WebhookNotification.Parse(
Request.Params["bt_signature"],
Request.Params["bt_payload"]
); <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< EXCEPTION WHEN HIT - Value cannot be null, Parameter name: Input >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
// ACTION Webhook
if (webhookNotification.Kind == WebhookKind.SUBSCRIPTION_CANCELED)
{
IsActive = false;
await Logger.LogInsight("", "WEBHOOK: SUBSCRIPTION_CANCELED " + webhookNotification.Subscription.Id );
}
else if (webhookNotification.Kind == WebhookKind.SUBSCRIPTION_CHARGED_SUCCESSFULLY)
{
IsActive = true;
await Logger.LogInsight("", "WEBHOOK: SUBSCRIPTION_CHARGED_SUCCESSFULLY " + webhookNotification.Subscription.Id);
}
// code ommitted for brevity, similar to above checking all 'kind' values
}
}
}
Why are the Braintree Request Params empty?

The problem was in the Webhook endpoint, the Braintree sample code is incorrect, it implies using MVC but developers need to use the Web Api for this, and the sample code will not work.
To get this working I left the Sample Notification POST above unchanged and created a new Webhook listener :
First create a class to receive the two braintree strings from the POST:
public class bt
{
public string bt_payload { get; set; }
public string bt_signature { get; set; }
}
And now create an empty Web Api 2 Controller:
[HttpPost]
[Route("api/webhooks/accept")]
public async Task<IHttpActionResult> accept(bt bt_lot)
{
var gateway = config.GetGateway();
WebhookNotification webhookNotification = gateway.WebhookNotification.Parse(
bt_lot.bt_signature,
bt_lot.bt_payload
);
if (webhookNotification.Kind == WebhookKind.SUBSCRIPTION_CANCELED)
{
// take your action here...
}
Im posting all my experiences with Braintree here on SO as there isn't a great deal of help here and I hope it helps others.
I have to say the Braintree Help staff are excellent and always answer questions with very detailed answers that 95% of the time resolved any issues I had, but this issue had me scratching my head as their example didn't work and the help staff assumed like me that the code should work.

Authenticatioin of user in wp8 app using google login

I want to authenticate a user from my wp8 app using users google login credentials. So that I can get profile info of user. I found two articles in web with source code. But I was unable to get what I want.
First code I've found in this Link. But after getting authentication code it didn't have any code to get profile. May be I could not understand.
Second code I've found in this Link. It was following mvvm pattern, so I was totally blank to understand this code.
If anyone have used it properly, please help me. What actually I want that after getting client id and client secret what to do in app to get user's profile info. Helps are appreciated. Thanks in advance.
Here is code
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
IDictionary<string, string> parameters = this.NavigationContext.QueryString;
string authEndpoint = parameters["authEndpoint"];
string clientId = parameters["clientId"];
string scope = parameters["scope"];
string uri = string.Format("{0}?response_type=code&client_id={1}&redirect_uri={2}&scope={3}",
authEndpoint,
clientId,
"urn:ietf:wg:oauth:2.0:oob",
scope);
webBrowser.Navigate(new Uri(uri, UriKind.Absolute));
}
private async void LayoutRoot_Loaded(object sender, RoutedEventArgs e)
{
if(!App.loggedin)
{
OAuthAuthorization authorization = new OAuthAuthorization(
"https://accounts.google.com/o/oauth2/auth",
"https://accounts.google.com/o/oauth2/token");
TokenPair tokenPair = await authorization.Authorize(
"YOUR_CLIENT_ID",
"CLIENT_SECRET",
new string[] { GoogleScopes.UserinfoEmail });
// Request a new access token using the refresh token (when the access token was expired)
TokenPair refreshTokenPair = await authorization.RefreshAccessToken(
"YOUR_CLIENT_ID",
"CLIENT_SECRET",
tokenPair.RefreshToken);
}
}
what to do after getting access token?

This is the code that allows you to view the profile details:
private void LoadProfile(string access_token)
{
Debug.WriteLine("loading profile");
RestClient client = new RestClient("https://www.googleapis.com");
client.Authenticator = new OAuth2AuthorizationRequestHeaderAuthenticator(access_token);
var request = new RestRequest("/oauth2/v1/userinfo", Method.GET);
client.ExecuteAsync<Profile>(request, ProfileLoaded);
}
private void ProfileLoaded(IRestResponse<Profile> response)
{
Profile = response.Data;
}
Just pass in the access_token you got from your prior code and the data should be contained in response.Data

DotNetOpenAuth Twitter Authenticaion Returning 401 Unauthorized

I'm starting to tear my hair out with Twitter and trying to signin a user!!! I have Facebook, Google, OpenId all working fine, just Twitter being a PAIN.
I am constantly getting 401 Unauthorized when I try to run my code and for the life of me cannot figure out why.
I have created a twitter client and and I'm using it with the InMemoryTokenManager from the DotNetOpenAuth sample solution. My Twitter client is here
public class TwitterClient
{
private string UserName { get; set; }
private static readonly ServiceProviderDescription ServiceDescription =
new ServiceProviderDescription
{
RequestTokenEndpoint = new MessageReceivingEndpoint(
"https://api.twitter.com/oauth/request_token",
HttpDeliveryMethods.GetRequest |
HttpDeliveryMethods.AuthorizationHeaderRequest),
UserAuthorizationEndpoint = new MessageReceivingEndpoint(
"https://api.twitter.com/oauth/authorize",
HttpDeliveryMethods.GetRequest |
HttpDeliveryMethods.AuthorizationHeaderRequest),
AccessTokenEndpoint = new MessageReceivingEndpoint(
"https://api.twitter.com/oauth/access_token",
HttpDeliveryMethods.GetRequest |
HttpDeliveryMethods.AuthorizationHeaderRequest),
TamperProtectionElements = new ITamperProtectionChannelBindingElement[] { new HmacSha1SigningBindingElement() },
};
IConsumerTokenManager _tokenManager;
public TwitterClient(IConsumerTokenManager tokenManager)
{
_tokenManager = tokenManager;
}
public void StartAuthentication()
{
var request = HttpContext.Current.Request;
using (var twitter = new WebConsumer(ServiceDescription, _tokenManager))
{
var callBackUrl = new Uri(request.Url.Scheme + "://" + request.Url.Authority + "/Members/TwitterCallback");
twitter.Channel.Send(
twitter.PrepareRequestUserAuthorization(callBackUrl, null, null)
);
}
}
public bool FinishAuthentication()
{
using (var twitter = new WebConsumer(ServiceDescription, _tokenManager))
{
var accessTokenResponse = twitter.ProcessUserAuthorization();
if (accessTokenResponse != null)
{
UserName = accessTokenResponse.ExtraData["screen_name"];
return true;
}
}
return false;
}
}
And I have the following in the constructor of my MembersController which is instantiating the InMemoryTokenManager with the correct credentials
_tokenManager = new InMemoryTokenManager(ConfigUtils.GetAppSetting("TwitterAppId"), ConfigUtils.GetAppSetting("TwitterAppSecret"));
And my two Actions are
public ActionResult LogonTwitter()
{
var client = new TwitterClient(_tokenManager);
client.StartAuthentication();
return null;
}
public ActionResult TwitterCallback()
{
var client = new TwitterClient(_tokenManager);
if (client.FinishAuthentication())
{
return new RedirectResult("/");
}
// show error
return View("LogOn");
}
The error appears in the StartAuthentication() in my TwitterClient. As soon as it calls this line
twitter.Channel.Send(
twitter.PrepareRequestUserAuthorization(callBackUrl, null, null)
);
I get the following error
Error occurred while sending a direct message or getting the response.
Inner Exception: The remote server returned an error: (401) Unauthorized.
Anyone got any advice? I have spent most of yesterday and this morning trying to sort this. All the online examples I have tried also seem to get 401 Unauthorized back? Is there a known issue with DotNetOpenAuth and Twitter?
Any help very much appreciated.

I can't remember the exact terminology but have you set up a callback URL in the twitter app (as well as in the code)? I've had similar problems recently, even when developing locally I believe you need to set that value, even if its just a placeholder

how to post to facebook page wall from .NET

I've created Facebook page.
I have no application secret and no access token.
I want to post to this page from my .NET desktop application.
How can I do it? Can anyone help please, where can I get access token for this?
Should I create a new Facebook Application? If yes, how can I grant permissions to this application to post on page's wall?
UPD1:
I have no website.
I need to post company's news from .NET desktop application to company's Facebook page.
All I have is Login/Password for Facebook Page Account.
UPD2:
I've created Facebook Application. With AppID/SecretKey. I can get access token. But...
How can I grant permissions to post to page's wall?
(OAuthException) (#200) The user hasn't authorized the application to perform this action

I have created a video tutorial showing how to do this at this location:
http://www.markhagan.me/Samples/Grant-Access-And-Post-As-Facebook-User-ASPNet
You will notice that, in my example, I am asking for both "publish_stream" and "manage_pages". This let's you also post on pages of which that users is an admin. Here is the full code:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Facebook;
namespace FBO
{
public partial class facebooksync : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
CheckAuthorization();
}
private void CheckAuthorization()
{
string app_id = "374961455917802";
string app_secret = "9153b340ee604f7917fd57c7ab08b3fa";
string scope = "publish_stream,manage_pages";
if (Request["code"] == null)
{
Response.Redirect(string.Format(
"https://graph.facebook.com/oauth/authorize?client_id={0}&redirect_uri={1}&scope={2}",
app_id, Request.Url.AbsoluteUri, scope));
}
else
{
Dictionary<string, string> tokens = new Dictionary<string, string>();
string url = string.Format("https://graph.facebook.com/oauth/access_token?client_id={0}&redirect_uri={1}&scope={2}&code={3}&client_secret={4}",
app_id, Request.Url.AbsoluteUri, scope, Request["code"].ToString(), app_secret);
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
{
StreamReader reader = new StreamReader(response.GetResponseStream());
string vals = reader.ReadToEnd();
foreach (string token in vals.Split('&'))
{
//meh.aspx?token1=steve&token2=jake&...
tokens.Add(token.Substring(0, token.IndexOf("=")),
token.Substring(token.IndexOf("=") + 1, token.Length - token.IndexOf("=") - 1));
}
}
string access_token = tokens["access_token"];
var client = new FacebookClient(access_token);
client.Post("/me/feed", new { message = "markhagan.me video tutorial" });
}
}
}
}

You need to ask the user for the publish_stream permission. In order to do this you need to add publish_stream to the scope in the oAuth request you send to Facebook. The easiest way to do all of this is to use the facebooksdk for .net which you can grab from codeplex. There are some examples there of how to do this with a desktop app.
Once you ask for that permission and the user grants it you will receive an access token which you can use to post to your page's wall. If you need to store this permission you can store the access token although you might need to ask for offline_access permission in your scope in order to have an access token that doesn't expire.

You can use
https://www.nuget.org/packages/Microsoft.Owin.Security.Facebook/ to obtain users login and permission and
https://www.nuget.org/packages/Facebook.Client/
to post to feeds.
Below example is for ASP.NET MVC 5:
public void ConfigureAuth(IAppBuilder app)
{
app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
// Facebook
var facebookOptions = new FacebookAuthenticationOptions
{
AppId = "{get_it_from_dev_console}",
AppSecret = "{get_it_from_dev_console}",
BackchannelHttpHandler = new FacebookBackChannelHandler(),
UserInformationEndpoint = "https://graph.facebook.com/v2.4/me?fields=id,name,email,first_name,last_name,location",
Provider = new FacebookAuthenticationProvider
{
OnAuthenticated = context =>
{
context.Identity.AddClaim(new Claim("FacebookAccessToken", context.AccessToken)); // user acces token needed for posting on the wall
return Task.FromResult(true);
}
}
};
facebookOptions.Scope.Add("email");
facebookOptions.Scope.Add("publish_actions"); // permission needed for posting on the wall
facebookOptions.Scope.Add("publish_pages"); // permission needed for posting on the page
app.UseFacebookAuthentication(facebookOptions);
AntiForgeryConfig.UniqueClaimTypeIdentifier = ClaimTypes.NameIdentifier;
}
}
On the callback you get user access token:
public ActionResult callback()
{
// Here we skip all the error handling and null checking
var auth = HttpContext.GetOwinContext().Authentication;
var loginInfo = auth.GetExternalLoginInfo();
var identityInfo = auth.GetExternalIdentity(DefaultAuthenticationTypes.ExternalCookie);
var email = loginInfo.Email // klaatuveratanecto#gmail.com
var name = loginInfo.ExternalIdentity.Name // Klaatu Verata Necto
var provider = loginInfo.Login.LoginProvider // Facebook | Google
var fb_access_token = loginInfo.identityInfo.FindFirstValue("FacebookAccessToken");
// Save this token to database, for the purpose of this example we will save it to Session.
Session['fb_access_token'] = fb_access_token;
// ...
}
Which then you can use to post to user's feed or page
public class postcontroller : basecontroller
{
public ActionResult wall()
{
var client = new FacebookClient( Session['fb_access_token'] as string);
var args = new Dictionary<string, object>();
args["message"] = "Klaatu Verata N......(caugh, caugh)";
try
{
client.Post("/me/feed", args); // post to users wall (feed)
client.Post("/{page-id}/feed", args); // post to page feed
}
catch (Exception ex)
{
// Log if anything goes wrong
}
}
}

You need to grant the permission "publish_stream".

Possibly the easiest way to do this is via Facebook PowerShell Module, http://facebookpsmodule.codeplex.com. This allows the same sort of operations as FacebookSDK, but via an IT-Admin scripting interface rather than a developer-oriented interface.
AFAIK there is still a limitation of Facebook Graph API that you will not be able to post references to other pages (e.g. #Microsoft) using the Facebook Graph API. This will apply to FacebookSDK, FacebookPSModule, and anything else built over Facebook Graph API.

You will get information on how to create a facebook app or link your website to facebook on https://developers.facebook.com/?ref=pf.
You will be able to download facebook sdk at http://facebooksdk.codeplex.com/. There are some good example given in the document section of the site.

public void PostImageOnPage()
{
string filename=string.Empty;
if(ModelState.IsValid)
{
//-------- save image in image/
if (System.Web.HttpContext.Current.Request.Files.Count > 0)
{
var file = System.Web.HttpContext.Current.Request.Files[0];
// fetching image
filename = Path.GetFileName(file.FileName);
filename = DateTime.Now.ToString("yyyyMMdd") + "_" + filename;
file.SaveAs(Server.MapPath("~/images/Advertisement/") + filename);
}
}
string Picture_Path = Server.MapPath("~/Images/" + "image3.jpg");
string message = "my message";
try
{
string PageAccessToken = "EAACEdEose0cBAAoWM3X";
// ————————create the FacebookClient object
FacebookClient facebookClient = new FacebookClient(PageAccessToken);
// ————————set the parameters
dynamic parameters = new ExpandoObject();
parameters.message = message;
parameters.Subject = "";
parameters.source = new FacebookMediaObject
{
ContentType = "image/jpeg",
FileName = Path.GetFileName(Picture_Path)
}.SetValue(System.IO.File.ReadAllBytes(Picture_Path));
// facebookClient.Post("/" + PageID + "/photos", parameters);// working for notification on user page
facebookClient.Post("me/photos", parameters);// woring using bingoapp access token not page in(image album) Post the image/picture to User wall
}
catch (Exception ex)
{
}
}

Cannot get the list of album in Facebook

All,
I am a beginner in Facebook programming. My test project is a simple website which displays Facebook account information (only name and id) and the list of albums of that Facebook account. The problem is, after authentication, I can get the profile data, but I cannot get the album list.
Here is code to get the profile information:
[FacebookAuthorize(LoginUrl = "~/Account/Login")]
public ActionResult Profile()
{
var fbWebContext = FacebookWebContext.Current;
if (fbWebContext.IsAuthorized())
{
try
{
var fb = new FacebookWebClient(fbWebContext);
var token = fb.AccessToken;
dynamic me = fb.Get("/me");
ViewBag.Name = me.name;
ViewBag.Id = me.id;
ViewBag.AccessToken = token;
}
catch (Exception ex)
{
{
fbWebContext.DeleteAuthCookie();
Session.Clear();
}
return RedirectToAction("Login", "Account");
}
}
return View();
}
and here is code to get the album list
[FacebookAuthorize(LoginUrl = "~/Account/Login")]
public ActionResult Album()
{
var fb = new FacebookWebClient(FacebookWebContext.Current);
IDictionary<string, object> albums = fb.Get("me/albums") as IDictionary<string, object>;
dynamic albumList = albums["data"];
foreach (dynamic albumInfo in albumList)
{
if (ViewBag.Albums == null)
ViewBag.Albums = new List<string>();
ViewBag.Albums.Add(albumInfo.id);
}
return View();
}
in above code, the item count of albumList always = 0.
Could you please help me to resolve this issue?
A minor note: my test website is a ASP.Net MVC3 web application written in C#.
Edit in response to Andy's answer:
In fact, I set lots of permissions but it still cannot get the album list. Here is code in my OAuth method.
var parameters = new Dictionary<string, object>();
parameters.Add("permissions", "user_about_me,offline_access,user_photos,publish_stream");
dynamic tokenResult = oAuthClient.ExchangeCodeForAccessToken(code, parameters);
Note that I did try to replace ""permissions" by "scope" but still failed.

Have you requested the user_photos permission? You need to request additional permissions during Authentication if you want to access additional user data.
See this Facebook permissions page for more info.
If you are using the Facebook JavaScript SDK FB.login method then you can simply add the user_photos permission to the perms option:
FB.login(function(response) {
if (response.session) {
if (response.perms) {
// user is logged in and granted some permissions.
// perms is a comma separated list of granted permissions
} else {
// user is logged in, but did not grant any permissions
}
} else {
// user is not logged in
}
}, {perms:'user_photos'});
Hope this helps.