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Unable to Post on Pinterest using their API

I'm receiving a 400 Bad Request error message when posting a pin on Pinterest. It works using Postman, but doesn't work programmatically. Using C#, has anyone been able to successfully post a pin on Pinterest without using the pinsharp wrapper?
private void postPinterest(string messages, string id, string usertoken, string image, string boardname, string username)
{
string link = null;
boardname = boardname.Replace(" ", "-");
string board = username + "/" + boardname;
string url = "https://api.pinterest.com/v1/pins?access_token=" + usertoken;
StringBuilder sb = new StringBuilder();
if (!string.IsNullOrEmpty(board))
sb.Append("&board=" + HttpUtility.UrlEncode(board));
if (!string.IsNullOrEmpty(messages))
sb.Append("&note=" + HttpUtility.UrlEncode(messages));
if (!string.IsNullOrEmpty(link))
sb.Append("&image_url=" + HttpUtility.UrlEncode(link));
string postdata = sb.ToString().Substring(1);
PostData(url, postdata);
}
private object PostData(string url, string postdata)
{
object json=null;
try
{
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST";
req.ContentType = "application/x-www-form-urlencoded";
// req.Accept = "application/json";
using (var stream = req.GetRequestStream())
{
byte[] bindata = Encoding.ASCII.GetBytes(postdata);
stream.Write(bindata, 0, bindata.Length);
}
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
string response = new StreamReader(resp.GetResponseStream()).ReadToEnd();
json = JsonConvert.DeserializeObject<dynamic>(response);
return json;
}
catch (WebException wex)
{
if (wex.Response != null)
{
using (var errorResponse = (HttpWebResponse)wex.Response)
{
using (var reader = new StreamReader(errorResponse.GetResponseStream()))
{
string error = reader.ReadToEnd();
return json;
}
}
}
}
return json;
}
EDIT:
It doesn't work using the JSON format or x-www-form-urlencoded format.
I changed the content type to application/x-www-form-urlencoded and now I'm receiving the error message below. I receive 400 Bad Request error using JSON format:
"{\n \"message\": \"405: Method Not Allowed\",\n \"type\": \"http\"\n}"

The problem is the the parameter that you are posting.
In the Api i could find board as a parameter but both note and image comes under field parameter which specifies the return type JSON.
As per documentation on this page you can post in this format
https://api.pinterest.com/v1/boards/anapinskywalker/wanderlust/pins/?
access_token=abcde&
limit=2&
fields=id,link,counts,note
So I tried the following and its getting response
https://api.pinterest.com/v1/boards/?access_token="YourTokenWithoutQuotes"&fields=id%2Ccreator
Would suggest you to first test the Api you are hitting putting a breakpoint inside the PostData function and check if the passed url is in the correct format and compare it with Pininterest API Explorer.
As you might have already received authorization code and access token so I am assuming your post function should be working fine.

public string postPinterest(string access_token,string boardname,string note,string image_url)
{
public string pinSharesEndPoint = "https://api.pinterest.com/v1/pins/?access_token={0}";
var requestUrl = String.Format(pinSharesEndPoint, accessToken);
var message = new
{
board = boardname,
note = note,
image_url = image_url
};
var requestJson = new JavaScriptSerializer().Serialize(message);
var client = new WebClient();
var requestHeaders = new NameValueCollection
{
{"Content-Type", "application/json" },
{"x-li-format", "json" }
};
client.Headers.Add(requestHeaders);
var responseJson = client.UploadString(requestUrl, "POST", requestJson);
var response = new JavaScriptSerializer().Deserialize<Dictionary<string, object>>(responseJson);
return response;
}

C# JSON Post using HttpWebRequest

I am new to JSON and C# and trying to write a code that will perform an http web request POST to get a token. Below is my code but I keep getting 400 bad request. Probably my codes just incorrect and I will appreciate for any helps on this. Below is my codes :
static public string GetAuthorizationToken()
{
string token = string.Empty;
string requestUrl = "some URL";
HttpWebRequest httpWebRequest = WebRequest.Create(requestUrl) as HttpWebRequest;
httpWebRequest.Method = "POST";
httpWebRequest.ContentType = "x-www-form-urlencoded";
Dictionary<string, string> postParameters = new Dictionary<string, string>();
postParameters.Add("grant", "some credentials");
postParameters.Add("id", "1234123411");
postParameters.Add("secret", "1234123411");
postParameters.Add("scope", "abcd");
string postData = "";
foreach (string key in postParameters.Keys)
{
postData += WebUtility.UrlEncode(key) + "="
+ WebUtility.UrlEncode(postParameters[key]) + "&";
}
byte[] data = Encoding.ASCII.GetBytes(postData);
httpWebRequest.ContentLength = data.Length;
Stream requestStream = httpWebRequest.GetRequestStream();
requestStream.Write(data, 0, data.Length);
requestStream.Close();
TokenResponse tokenResponse = new TokenResponse();
using (HttpWebResponse response = httpWebRequest.GetResponse() as HttpWebResponse)
{
if (response.StatusCode != HttpStatusCode.OK)
throw new Exception(String.Format(
"Server error (HTTP {0}: {1}).",
response.StatusCode,
response.StatusDescription));
DataContractJsonSerializer responseSerializer = new DataContractJsonSerializer(typeof(TokenResponse));
Stream responseStream = response.GetResponseStream();
object objResponse = responseSerializer.ReadObject(responseStream);
tokenResponse = objResponse as TokenResponse;
response.Close();
if (tokenResponse != null)
{
return tokenResponse.accessToken;
}
}
return token;
}

Here is a precise and accurate example of a POST request and reading the response(though without serializing the JSON data). Only mistake I see so far in your code is an incorrect ContentType also we can't see what url you are trying to send the server(but odds are that it is incorrect). Hope it helps you advance.
using System;
using System.Collections.Generic;
using System.Net;
using System.IO;
namespace SExperiment
{
class MainClass
{
public static void Main(string[] args)
{
try{
string webAddr="http://gurujsonrpc.appspot.com/guru";
var httpWebRequest = WebRequest.CreateHttp(webAddr);
httpWebRequest.ContentType = "application/json; charset=utf-8";
httpWebRequest.Method = "POST";
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string json = "{ \"method\" : \"guru.test\", \"params\" : [ \"Guru\" ], \"id\" : 123 }";
streamWriter.Write(json);
streamWriter.Flush();
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var responseText = streamReader.ReadToEnd();
Console.WriteLine(responseText);
//Now you have your response.
//or false depending on information in the response
}
}catch(WebException ex){
Console.WriteLine(ex.Message);
}
}
}
}

You have set requestUrl to "some URL". Please try with a web address that exists, in addition to changing the content type to "application/json".

The remote server returned an error: (401) Unauthorized when requesting RestApi data

I am triyng to get data from the Rest API. API wants 3 things to give authentication;
first one is "Accept:application/vnd.###.v1.0+json"
second one : "Content Type : application/json"
third one : Base64 encoded "userName:password" string
and I should pass these credentials for validation and authorization in custom header.I know there are a lot of thread on this site about this topic but I couldn't solve the problem from them.
Here is the code block :
public class McAfeeIPSManager
{
String URL = "https://serviceOfApi/sdkapi/session";
public void getWebRequest()
{
System.Net.ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
String username = "user";
String password = "password1";
var request = HttpWebRequest.Create(URL) as HttpWebRequest;
request.Accept = "application/vnd.###.v2.0+json";
request.Method = "GET";
request.ContentType = "application/json";
String encoded = System.Convert.ToBase64String(System.Text.Encoding.GetEncoding("ISO-8859-1").GetBytes(username + ":" + password));
request.Headers.Add("Authorization","Basic "+encoded);
try
{
// Get response
using (var response = request.GetResponse() as HttpWebResponse)
{
// Get the response stream
using (var responseReader = new StreamReader(response.GetResponseStream()))
{
string responseBody = responseReader.ReadToEnd();
// Console application output
System.Diagnostics.Debug.Write("Response Body ---> " + responseBody);
//Console.WriteLine(responseBody);
}
}
}
catch (WebException ex)
{
System.Diagnostics.Debug.Write("Error : " + ex.Message);
Console.WriteLine("Error: {0}", ex.Message);
}
}
}
How can get data from WebAPI under these conditions?Can anybody help me?

You have no PreAuthenticate and credential ?
I have a code that may help you:
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://pwmaffr2:8443/remote/system.delete?names=" + DeviceName + "");
request.Headers.Add("AUTHORIZATION", "Basic YTph");
request.ContentType = "text/html";
request.Credentials = new NetworkCredential(Username, Password);
ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
request.PreAuthenticate = true;
request.Method = "GET";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
);
StreamReader stream = new StreamReader(response.GetResponseStream());
string X = stream.ReadToEnd();

hmm in addition of what i post try deal with this it should work for you hope:
string credentials = String.Format("{0}:{1}", username, password);
byte[] bytes = Encoding.ASCII.GetBytes(credentials);
string base64 = Convert.ToBase64String(bytes);
string authorization = String.Concat("basic ", base64);
request.Headers.Add("Authorization", authorization);

oauth/token returns empty body

I am encountering a problem getting the access_token in client application using oauth.
The returned response has empty body though in API I can see the response is not empty.
tokenresponse = {
"access_token":"[ACCESSTOKENVALUE]",
"token_type":"bearer",
"expires_in":"1200",
"refresh_token":"[REFRESHTOKENVALUE]",
"scope":"[SCOPEVALUE]"
}
The method from API that returns the token http://api.sample.com/OAuth/Token:
public ActionResult Token()
{
OutgoingWebResponse response =
this.AuthorizationServer.HandleTokenRequest(this.Request);
string tokenresponse = string.Format("Token({0})", response!=null?response.Body:""));
return response.AsActionResult();
}
The client method that requests the token is:
public string GetAuthorizationToken(string code)
{
string Url = ServerPath + "OAuth/Token";
string redirect_uri_encode = UrlEncode(ClientPath);
string param = string.Format("code={0}&client_id={1}&client_secret={2}&redirect_uri={3}&grant_type=authorization_code",code, ClientId, ClientSecret, redirect_uri_encode);
HttpWebRequest request = HttpWebRequest.Create(Url) as HttpWebRequest;
string result = null;
request.Method = "POST";
request.KeepAlive = true;
request.ContentType = "application/x-www-form-urlencoded";
request.Timeout = 10000;
request.Headers.Remove(HttpRequestHeader.Cookie);
var bs = Encoding.UTF8.GetBytes(param);
using (Stream reqStream = request.GetRequestStream())
{
reqStream.Write(bs, 0, bs.Length);
}
using (WebResponse response = request.GetResponse())
{
var sr = new StreamReader(response.GetResponseStream());
result = sr.ReadToEnd();
sr.Close();
}
if (!string.IsNullOrEmpty(result))
{
TokenData tokendata = JsonConvert.DeserializeObject<TokenData>(result);
return UpdateAuthorizotionFromToken(tokendata);
}
return null;
}
The result variable is empty.
Please let me know if you have any idea what could cause this. Initially I assumed is because of the cookies so I tried to remove them from request.
Thanks in advance.

Dear just create webclient using following code and you will get json info in tokeninfo.I used it and simply its working perfect.
WebClient client = new WebClient();
string postData = "client_id=" + ""
+ "&client_secret=" + ""
+ "&grant_type=password&username=" + "" //your username
+ "&password=" + "";//your password :)
string soundCloudTokenRes = "https://api.soundcloud.com/oauth2/token";
string tokenInfo = client.UploadString(soundCloudTokenRes, postData);
You can then use substring that contains only token from tokeninfo.
To upload tracks on sound cloud.
private void TestSoundCloudupload()
{
System.Net.ServicePointManager.Expect100Continue = false;
var request = WebRequest.Create("https://api.soundcloud.com/tracks") as HttpWebRequest;
//some default headers
request.Accept = "*/*";
request.Headers.Add("Accept-Charset", "ISO-8859-1,utf-8;q=0.7,*;q=0.3");
request.Headers.Add("Accept-Encoding", "gzip,deflate,sdch");
request.Headers.Add("Accept-Language", "en-US,en;q=0.8,ru;q=0.6");
//file array
var files = new UploadFile[] { new UploadFile(Server.MapPath("Downloads//0.mp3"), "track[asset_data]", "application/octet-stream") };
//other form data
var form = new NameValueCollection();
form.Add("track[title]", "Some title");
form.Add("track[sharing]", "public");
form.Add("oauth_token", "");
form.Add("format", "json");
form.Add("Filename", "0.mp3");
form.Add("Upload", "Submit Query");
try
{
using (var response = HttpUploadHelper.Upload(request, files, form))
{
using (var reader = new StreamReader(response.GetResponseStream()))
{
Response.Write(reader.ReadToEnd());
}
}
}
catch (Exception ex)
{
Response.Write(ex.ToString());
}
}

json call with C# [duplicate]

This question already has answers here:
How to post JSON to a server using C#?
(15 answers)
Closed 1 year ago.
I am trying to make a json call using C#. I made a stab at creating a call, but it did not work:
public bool SendAnSMSMessage(string message)
{
HttpWebRequest request = (HttpWebRequest)
WebRequest.Create("http://api.pennysms.com/jsonrpc");
request.Method = "POST";
request.ContentType = "application/json";
string json = "{ \"method\": \"send\", "+
" \"params\": [ "+
" \"IPutAGuidHere\", "+
" \"msg#MyCompany.com\", "+
" \"MyTenDigitNumberWasHere\", "+
" \""+message+"\" " +
" ] "+
"}";
StreamWriter writer = new StreamWriter(request.GetRequestStream());
writer.Write(json);
writer.Close();
return true;
}
Any advice on how to make this work would be appreciated.

In your code you don't get the HttpResponse, so you won't see what the server side sends you back.
you need to get the Response similar to the way you get (make) the Request. So
public static bool SendAnSMSMessage(string message)
{
var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://api.pennysms.com/jsonrpc");
httpWebRequest.ContentType = "text/json";
httpWebRequest.Method = "POST";
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
string json = "{ \"method\": \"send\", " +
" \"params\": [ " +
" \"IPutAGuidHere\", " +
" \"msg#MyCompany.com\", " +
" \"MyTenDigitNumberWasHere\", " +
" \"" + message + "\" " +
" ] " +
"}";
streamWriter.Write(json);
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var responseText = streamReader.ReadToEnd();
//Now you have your response.
//or false depending on information in the response
return true;
}
}
I also notice in the pennysms documentation that they expect a content type of "text/json" and not "application/json". That may not make a difference, but it's worth trying in case it doesn't work.

just continuing what #Mulki made with his code
public string WebRequestinJson(string url, string postData)
{
string ret = string.Empty;
StreamWriter requestWriter;
var webRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
if (webRequest != null)
{
webRequest.Method = "POST";
webRequest.ServicePoint.Expect100Continue = false;
webRequest.Timeout = 20000;
webRequest.ContentType = "application/json";
//POST the data.
using (requestWriter = new StreamWriter(webRequest.GetRequestStream()))
{
requestWriter.Write(postData);
}
}
HttpWebResponse resp = (HttpWebResponse)webRequest.GetResponse();
Stream resStream = resp.GetResponseStream();
StreamReader reader = new StreamReader(resStream);
ret = reader.ReadToEnd();
return ret;
}

Here's a variation of Shiv Kumar's answer, using Newtonsoft.Json (aka Json.NET):
public static bool SendAnSMSMessage(string message)
{
var httpWebRequest = (HttpWebRequest)WebRequest.Create("http://api.pennysms.com/jsonrpc");
httpWebRequest.ContentType = "text/json";
httpWebRequest.Method = "POST";
var serializer = new Newtonsoft.Json.JsonSerializer();
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
using (var tw = new Newtonsoft.Json.JsonTextWriter(streamWriter))
{
serializer.Serialize(tw,
new {method= "send",
#params = new string[]{
"IPutAGuidHere",
"msg#MyCompany.com",
"MyTenDigitNumberWasHere",
message
}});
}
}
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
var responseText = streamReader.ReadToEnd();
//Now you have your response.
//or false depending on information in the response
return true;
}
}

If your function resides in an mvc controller u can use the below code with a dictionary object of what you want to convert to json
Json(someDictionaryObj, JsonRequestBehavior.AllowGet);
Also try and look at system.web.script.serialization.javascriptserializer if you are using .net 3.5
as for your web request...it seems ok at first glance..
I would use something like this..
public void WebRequestinJson(string url, string postData)
{
StreamWriter requestWriter;
var webRequest = System.Net.WebRequest.Create(url) as HttpWebRequest;
if (webRequest != null)
{
webRequest.Method = "POST";
webRequest.ServicePoint.Expect100Continue = false;
webRequest.Timeout = 20000;
webRequest.ContentType = "application/json";
//POST the data.
using (requestWriter = new StreamWriter(webRequest.GetRequestStream()))
{
requestWriter.Write(postData);
}
}
}
May be you can make the post and json string a parameter and use this as a generic webrequest method for all calls.

Its just a sample of how to post Json data and get Json data to/from a Rest API in BIDS 2008 using System.Net.WebRequest and without using newtonsoft. This is just a sample code and definitely can be fine tuned (well tested and it works and serves my test purpose like a charm). Its just to give you an Idea. I wanted this thread but couldn't find hence posting this.These were my major sources from where I pulled this.
Link 1 and Link 2
Code that works(unit tested)
//Get Example
var httpWebRequest = (System.Net.HttpWebRequest)System.Net.WebRequest.Create("https://abc.def.org/testAPI/api/TestFile");
httpWebRequest.ContentType = "application/json";
httpWebRequest.Method = "GET";
var username = "usernameForYourApi";
var password = "passwordForYourApi";
var bytes = Encoding.UTF8.GetBytes(username + ":" + password);
httpWebRequest.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(bytes));
var httpResponse = (System.Net.HttpWebResponse)httpWebRequest.GetResponse();
using (StreamReader streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
string result = streamReader.ReadToEnd();
Dts.Events.FireInformation(3, "result from readng stream", result, "", 0, ref fireagain);
}
//Post Example
var httpWebRequestPost = (System.Net.HttpWebRequest)System.Net.WebRequest.Create("https://abc.def.org/testAPI/api/TestFile");
httpWebRequestPost.ContentType = "application/json";
httpWebRequestPost.Method = "POST";
bytes = Encoding.UTF8.GetBytes(username + ":" + password);
httpWebRequestPost.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(bytes));
//POST DATA newtonsoft didnt worked with BIDS 2008 in this test package
//json https://stackoverflow.com/questions/6201529/how-do-i-turn-a-c-sharp-object-into-a-json-string-in-net
// fill File model with some test data
CSharpComplexClass fileModel = new CSharpComplexClass();
fileModel.CarrierID = 2;
fileModel.InvoiceFileDate = DateTime.Now;
fileModel.EntryMethodID = EntryMethod.Manual;
fileModel.InvoiceFileStatusID = FileStatus.NeedsReview;
fileModel.CreateUserID = "37f18f01-da45-4d7c-a586-97a0277440ef";
string json = new JavaScriptSerializer().Serialize(fileModel);
Dts.Events.FireInformation(3, "reached json", json, "", 0, ref fireagain);
byte[] byteArray = Encoding.UTF8.GetBytes(json);
httpWebRequestPost.ContentLength = byteArray.Length;
// Get the request stream.
Stream dataStream = httpWebRequestPost.GetRequestStream();
// Write the data to the request stream.
dataStream.Write(byteArray, 0, byteArray.Length);
// Close the Stream object.
dataStream.Close();
// Get the response.
WebResponse response = httpWebRequestPost.GetResponse();
// Display the status.
//Console.WriteLine(((HttpWebResponse)response).StatusDescription);
Dts.Events.FireInformation(3, "Display the status", ((HttpWebResponse)response).StatusDescription, "", 0, ref fireagain);
// Get the stream containing content returned by the server.
dataStream = response.GetResponseStream();
// Open the stream using a StreamReader for easy access.
StreamReader reader = new StreamReader(dataStream);
// Read the content.
string responseFromServer = reader.ReadToEnd();
Dts.Events.FireInformation(3, "responseFromServer ", responseFromServer, "", 0, ref fireagain);
References in my test script task inside BIDS 2008(having SP1 and 3.5 framework)