I have been playing around with the open graph api and more or so with the Publishing part as mentioned here
https://developers.facebook.com/docs/graph-api/using-graph-api/#publishing
It mentions For example, to publish a post on behalf of someone, you would make an HTTP POST request as below: I require the UserID and Access Token.
So I have been able to get the Access Token which doesn't expire and also the User ID of the user that has accepted the app to publish content.
However to my failure I am unable to post feed by using the steps mentioned in the above link.
This is a small example I put together to test the HttpPost Request
[HttpPost]
public ActionResult FacebookPostResponse(string accessToken)
{
string fbPost = "Hello";
Uri targetUserUri = new Uri("https://graph.facebook.com/10153688496941651/feed?message=" + fbPost + "&access_token=" + accessToken);
HttpWebRequest post = (HttpWebRequest)HttpWebRequest.Create(targetUserUri);
HttpWebResponse res = (HttpWebResponse)post.GetResponse();
var sC = res.StatusCode;
ViewBag.Message = sC;
}
The ActionResult above returns me a status code of OK meaning the request was successful. However when I go to my facebook wall I don't see anything from the app?
When I copy the URL request in a web browser it returns the following:
{
"data": [
]
}
I am not sure what I am doing incorrect? Anybody have suggestions?
You should set up your HttpWebRequest instance to use POST http method, the default value is GET
so just add this:
post.Method = "POST";
After :
HttpWebRequest post = (HttpWebRequest)HttpWebRequest.Create(targetUserUri);
Related
Im following the instructions from here to publish a new video on DailyMotion, using c# and a WebClient.
i successfully got the auth-token, then an upload url, then the actual file to upload. im stuck at step 4, called: "create the video"
it states to POST url=<the url i got from previous step> to https://api.dailymotion.com/me/videos (with the Authorization token in the header), but all my attempts result in "bad request" - without further explanation.
any ideas?
using (var client = new WebClient())
{
var createRequest = $"url={videoUpload.url}";
client.Headers.Add("Authorization", $"Bearer {authToken.access_token}");
client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
var createVideo = client.UploadString("https://api.dailymotion.com/me/videos", "POST", createRequest);
}
also tried:
var createRequest = $"url={HttpUtility.UrlEncode(videoUpload.url)}";
I tried your code and my video was created successfully. As explained in our documentation a 400 error is related to a missing/invalid parameter.
I assume you are trying to send the upload url (returned in step 2) instead of the url returned by step 3 (url of your uploaded file).
You can find an article (with examples of returned values) which use a simplified way to upload on Dailymotion here.
I have the following url for the first stage. getting code http://www.facebook.com/dialog/oauth?client_id=myappid&redirect_uri=myurl;state=e879888c-7090-4c09-98a5-ff361b30d55;scope=email
and
url = String.Format(#"http://graph.facebook.com/oauth/access_token?client_id={0}&redirect_uri={1}&client_secret={2}&code={3}",FacebookAppId, redirectUrl, FacebookSecret, code);
WebClient webClient = new WebClient();
var tokenVars = webClient.DownloadString(url);
var responseVars = HttpUtility.ParseQueryString(tokenVars);
string access_token = responseVars["access_token"];
string data = webClient.DownloadString(String.Format("http://graph.facebook.com/me?access_token={0}", access_token));
var jobject = JObject.Parse(data);
400 BAD REQUEST is returned.
Question: Is it possible to get facebook access token without connecting by http s ?
Question: Is it possible to use access_token without HTTPS? NOT HTTP
for a secure you must take https,
maybe if you aren't, some bad thing will show, #long process..
i just browse for your issue, and same thing
I'm hoping I've done something knuckle-headed here and there is an easy answer. I'm simply trying to retrieve the list of comments for a page on my site. I use the social plug-in and then retrieve the comment id via the edge event. Server side I send the page id back and do a simple request using a HttpWebRequest. Worked well back in October, but now I get an 'internal error' response from FB. I can use the same url string put it into a browser and get the comments back in the browser in json.
StringBuilder url = new StringBuilder();
url.Append("https://graph.facebook.com/comments/?ids=" + comment.page);
string requestString = url.ToString();
HttpWebRequest request = WebRequest.Create(requestString) as HttpWebRequest;
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
Ideas? Thanks much in advance.
Since you're using the Facebook C# SDK (per your tag), try:
var url = "{your url}";
var api = new Facebook.FacebookClient(appId,appSec);
dynamic commentsObj = api.Get("/comments/?ids=" + url);
dynamic arrayOfComments = commentsObj[url].data
I'm writing a .NET app that runs on a Windows computer. It is not accessible through the browser. The problem is, I can't authenticate like I should. I'm currently coding in C# .NET, more specific in C#.
I have a webbrowser control on my form.
The user logs on to facebook through this webbrowser control.
After the logon, I start the authentication procedure.
I then retreive a code.
Here's where it goes wrong. With this code I want to obtain an access token.
The generated request URL looks like: https://graph.facebook.com/oauth/access_token?client_id=____MY_APP_ID______&redirect_uri=http://localhost/&client_secret=_____MY_APP_SECRET_____&code=____MY_RETREIVED_CODE_____ and is made through the code below.
Please note that my redirect URL is http://localhost. This should be okay, right?
Also, in my App Settings, I have the following information.
Site URL: http://localhost/
Site Domain: localhost
private String ExchangeCodeForToken(String code, Uri redirectUrl)
{
var TokenEndpoint = new Uri("https://graph.facebook.com/oauth/access_token");
var url = TokenEndpoint + "?" +
"client_id=" + _AppID + "&" +
"redirect_uri=" + redirectUrl + "&" +
"client_secret=" + _AppSecret + "&" +
"code=" + code;
var request = WebRequest.CreateDefault(new Uri(url));
using (var response = request.GetResponse())
{
using (var responseStream = response.GetResponseStream())
{
using (var responseReader = new StreamReader(responseStream))
{
var responseText = responseReader.ReadToEnd();
var token = responseText.Replace("access_token=", "");
return token;
}
}
}
}
When I execute this, I get this error:
error http://www.imageupload.org/getfile.php?id=50131&a=447f6fcc0ebd4d3f8e8a59a3a6e36ac3&t=4de0841c&o=0889D68FDC35508BA2C6F2689FCBAB7C30A8670CC9647EE598701D8BEC13ED278F0989D393&n=autherror.png&i=1
Webexception was unhandled by user code
The remote server returned an error: (400) Bad Request.
Here's where I think I might be going wrong:
Are my app settings correct?
Should my redirect url be http://localhost, even if there isn't actually a service listening there?
Most importantly:
how do I get rid of this error and retreive the access token?
Thanks in advance!
You get this error because you are not supposed to call this URL from a Desktop app : as far as I know, you can not use the token endpoint for Desktop app authentication. Also, you can get the access token directly (no need to ask for a code first). Here is what you have to do.
Load the following URL in your embedded web browser :
https://www.facebook.com/dialog/oauth?
client_id=YOUR_APP_ID&
redirect_uri=https://www.facebook.com/connect/login_success.html
The user will be asked to log in and will be redirected to this URL with the access token in the URL :
https://www.facebook.com/connect/login_success.html#access_token=...
So you have to detect the redirect and retrieve the access token from the URL.
Thanks quinten!
However, I've managed to solve my own problem by using the C# Facebook SDK.
This software development kit has been a really great help!
There are a lot of samples included (including authorisation)
Anyone who programs in .NET with facebook should check it out! Coding for facebook is now much easier.
http://facebooksdk.codeplex.com/
I am trying to login to a HTTPS website and then navigate to download a report using c# (its an xml report) ?
I have managed to login OK via cookies/headers etc - but whenever I navigate to the link once logged in, my connection takes me to the "logged out" page ?
Anyone know what would cause this ?
Make sure the CookieContainer you use for your login is the same one you use when downloading the actual report.
var cookies = new CookieContainer();
var wr1 = (HttpWebRequest) HttpWebRequest.Create(url1);
wr1.CookieContainer = cookies;
// do login here with wr1
var wr2 = (HttpWebRequest) HttpWebRequest.Create(url2);
wr2.CookieContainer = cookies;
// get the report with wr2
It can be any number of reasons. Did you pass in the cookie to the download request? Did you pass a referrer URL?
The best way to check is to record a working HTTP request with Wireshark or any number of Firefox extensions or Fiddler.
Then try to recreate the request in C#