I am trying a "GET" method to request a count of activities from the Accelo API here:
https://api.accelo.com/docs/?http#count-activities
And although i've used a very similar POST method to successfully get the access token using an authentication method, I cannot for the life of me figure out how to get the count of activities. The API says to use "GET" and past the access token as "bearer..." and I've also tried doing a post and getting the stream first, tried sending in some data and accessing the "list activities" endpoint instead...nothing is working. everything I do returns the error "400. Bad Request."
I've tried passing data in a query string format directly in the URI, and tried passing no data since its a GET function. It looks to me like I'm following the API exactly.
Dim data2 = Nothing ' Encoding.UTF8.GetBytes(jsonstring)
Dim _list = GetListOfActivities(New Uri("https://example.api.accelo.com/api/v0/activities/count.xml"), data2, _AccessToken)
Dim reqa As WebRequest = WebRequest.Create(uri)
' reqa.Method = "GET"
reqa.Headers.Add("GET", "/api/v0/activities/count.xml HTTP/1.1")
reqa.Headers.Add("Authorization", "Bearer " & _AccessToken)
reqa.ContentType = "application/x-www-form-urlencoded"
'reqa.ContentLength = jsonDataBytes.Length
' Dim streama = reqa.GetRequestStream()
' streama.Write(jsonDataBytes, 0, jsonDataBytes.Length)
'streama.Close()
Dim responsea As WebResponse = reqa.GetResponse()
Console.WriteLine((CType(responsea, HttpWebResponse)).StatusDescription)
I must be formatting the request wrong - please help?
My problem turned out to be something stupid, and literally beyond the scope of what I posted here. I had specified a "scope" in my initial request to get the access token that was set to read-only "staff" data (I had copied-and-pasted their example online into my code, for other parameters like grant type, and I brought the scope along with it), and in this scenario here I was trying to access "activities" data and not "staff" data. I would have thought I'd get a permissions-related error, instead of "bad request" which confused me, but anyway it works now.
The above code - actually with this line:
reqa.Method = "GET"
instead of this line:
reqa.Headers.Add("GET", "/api/v0/activities/count.xml HTTP/1.1")
Works just fine since I changed my scope to read(all) in my initial web method getting the access token.
Related
I am using PostMan as part of the testing regime for a WebAPI service development that I am working on. In order for external parties to gain access to our WebAPI service they first need to obtain an access token.
The POST request returns some JSON containing the required access token:
{
"access_token": "anencryptedaccesstoken",
"scope": "am_application_scope default",
"token_type": "Bearer",
"expires_in": 3218
}
I am putting together a series of integration tests which need to emulate the POST calls from POSTMAN. I am currently using System.Net.WebClient to achieve this. I am not sure what I need to do in order to achieve my goal. Here is a function that I am using to try and obtain the access token:
Public Shared Function GetAccessToken(ByVal endpoint As String, wc As WebClient) As String
Dim result As String = ""
Dim data As Byte() = Nothing
'Header information
wc.Headers.Add("Authorization", "Basic <alongencryptedstring>")
wc.Headers.Add("Content_Type", "application/x-www-form-urlencoded")
result = wc.UploadString(endpoint, "POST", "")
Return result
End Function
The 'Body' tab in PostMan contains the following entries:
grant_type - client_credentials
Content_Type - application%2Fx-www-form-urlencoded
In this instance as far as I am aware there is no 'data' element to the PostMan request hence the empty string in my use of UploadString. The function returns the following error:
"The remote server returned an error: (415) Unsupported Media Type."
I am new to web app development so please bear with me, I am finding it difficult to phrase what I think are meaningful question in the context of this post, I hope however that I have ssupplied sufficient information to convey the gist of my problem and for someone to be able to respond appropriately.
Kind Regards
Paul.
I'm making a call to the SalesForce REST Api.
However, I have a very weird error. Initially I wrote this in a VB.NET Module file. Everything was working correctly, as soon as I put the method in a class I keep getting the darn Invalid Session ID error. The error doesn't seem to suggest which part of the code is failing.
I am using RestSharp to facilitate the call to the SalesForce API, and I know for a fact it works because in the Module file I am able to fetch the data that I need.
I do not understand the rationale about why it works in the Module file but not in a class file.
Anyways, here is the code that I've placed in both the class file and the Module file to facilitate the call:
client = New RestClient(_strURI)
request = New RestRequest(Method.POST)
request.AddParameter("grant_type", "password")
request.AddParameter("client_id", _strClientID)
request.AddParameter("client_secret", _strClientSecret)
request.AddParameter("redirect_uri", _strRedirectUrl)
request.AddParameter("username", _strUserName)
request.AddParameter("password", _strPassword & _strSecurityToken)
'Dim response As IRestResponse
Dim response As IRestResponse = Nothing
response = client.Execute(request)
'This is the offending line in the class file..it returns back a HTTP 200 yet gives me that Session Invalid error
If response.StatusCode <> HttpStatusCode.BadRequest Then
token = JsonConvert.DeserializeObject(Of TokenResponse)(response.Content)
Dim listViewResults As String = HttpGet(token.instance_url & "/services/data/v38.0/sobjects/Contact/listviews", "")
I am unsure whether this is a permission issue or more of a programming error; because in both cases all of the authentication strings are the same. At the moment I've hardcoded it to point to a test profile. So I can't pinpoint what exactly I am doing wrong?
Any help would suffice.
Stupid me,
Anyways shortly after I posted this I went and took a brisk walk outside of the office. Turned out to be a misnomer.
I had the same HttpGet method defined in the module file and forgot to copy and paste that into the class file. When I actually stepped through it, it threw an Exception inside.
Turned out the only fix needed was to put that method into the class file.
I tried to search for a quick answer to this but I did not see a response...so I apologize if this is redundant.
I am pretty new to VBA and only use it to pull data from APIs to make my life easier.
My question is about the response im getting from a particular API. HEre is the code im using:
Dim URL As String: URL = "API URL HERE in json format"
Dim Http As New WinHttpRequest
Dim Resp As String
Http.Open "GET", URL, False
Http.Send
Resp = Http.ResponseText
Debug.Print Resp
So the Resp text is complete gibberish...is this a security thing? I pass a security key successfully when I use it in the browser so I assumed it was not that.... I have used this exact method on numerous APIs but this is the first time I have seen this garbled response. FYI the url I am using works just fine in a browser.
The Resp looks like this for example:
gõi:?ñq¢²^2?7AÄ??æºz³Gs=Î Ü?¬«¤%?$ÖÉ'q¯¼|?¼²ôue¦½Þ"HË!ø5[4]s½?·Þ.OÛÃBh×?4"rÊÊ[r7
Thanks for any help!
Khauna
I am making an app for Windows Phone and since I need some login cookies that are saved in Web browser control, I am using the code from here: Grabbing Cookies in Web Browser Control - WP7 to create a HTTPWebRequest and get some JSON data for parsing but I am getting two errors on the last line of this snippet
Dim browser = New WebBrowser()
Dim brwhttp = GetType(WebRequestCreator).GetProperty("BrowserHttp")
Dim requestFactory = TryCast(brwhttp.GetValue(Browser, Nothing), IWebRequestCreate)
Dim uri = New Uri("some-url")
Dim req = requestFactory.Create(uri)
req.Method = "GET"
req.BeginGetResponse(New AsyncCallback(request_CallBack), WebRequest)
(1). 'WebRequest' is a type and cannot be used as an expression.
(2). Delegate 'System.AsyncCallback' requires an 'AddressOf' expression or lambda expression as the only argument to its constructor.
How to fix?
UPDATE 1: Fixed Error (2) by adding 'Address Of' before 'request_CallBack' but Error (1) still remains.
UPDATE 2: Fixed all errors but not getting any response (empty). What's wrong with my code?
THe problems are two do with the line req.BeginGetResponse(New AsyncCallback(request_CallBack), WebRequest) This has two problems.
VB.Net does not have true first class functions so you have to use the AddressOf operator the create a delegate. Also the compiler will infer the delegate type so you don't need the constructor
BeginGetResponse takes a state object as the second parameter not a type expression. This is whatever you need in the callback
so:
req.BeginGetResponse(AddressOf request_CallBack, Nothing)
If you need to pass a type to the request callback use
req.BeginGetResponse(AddressOf request_CallBack, GetType(WebRequest))
However this looks like a copying change and what you want may be
req.BeginGetResponse(AddressOf request_CallBack, req)
I'm trying to instantiate an HttpGet Object so that I can send a get request to the foursquare api. However, every time I attempt this, (and I've tried it with several different tokens) I get the following error:
java.lang.IllegalArgumentException: Illegal character in query at index 110: https://api.foursquare.com/v2/users/self/checkins?oauth_token=VIHXZZH1ZEXTXOYDFRHHWF42YREWKMNTABDTTVMMF3CSYTKW
It's in the format https://api.foursquare.com/v2/users/self/checkins?oauth_token=OAUTH_TOKEN. You can see my code below. Thanks in advance.
String checkinsUrl = "https://api.foursquare.com/v2/users/self/checkins";
String authUrl = checkinsUrl + "?oauth_token=" + this.token;
HttpGet getMethod = new HttpGet(authUrl);
This was actually just me being stupid. Foursquare sends back a code with is not the access token. You must then make an httpget with that code in order to get the access token.