I am integrating payu to my web app. The problem is I can not request new order It returns 403 forbidden in my app but with same data I can get 200 from api doing it postman.
I got token,created authorization,sent headers(authorization,content-type,content-length).
Here is my post method.
var request = (HttpWebRequest)WebRequest.Create(new Uri(Url));
var postData = RawData;//json data
request.Method = "POST";
request.ContentType = ContentType;
if (Headers != null) // add headers
{
foreach (var header in Headers)
{
request.Headers.Add(header.Key, header.Value);
}
}
var data = Encoding.UTF8.GetBytes(postData);
request.ContentLength = data.Length;
using (var stream = new StreamWriter(request.GetRequestStream()))
{
stream.Write(data);
}
try
{
var response = (HttpWebResponse)request.GetResponse();
var responseString = new StreamReader(response.GetResponseStream()).ReadToEnd();
return responseString;
}
catch (WebException e)
{
return null;
}
Please add this line.
request.UseDefaultCredentials = true;
or you can see the complete explanation of this error here on stackoverflow.
The remote server returned an error: (403) Forbidden
Related
I'm trying to send a message to a slack channel in C#. with http request, using Webhook url.
In the get response line' I'm getting 400- bad request.
My function:
public void SendSlackAlert(string message, string slackUrl)
{
try
{
var content = $"{{\r\n\"text\":\"{Context}\r\n{message} \"\r\n}}";
if (string.IsNullOrWhiteSpace(slackUrl))
{
return;
}
var httpRequest = WebRequest.Create(slackUrl) as HttpWebRequest;
httpRequest.Method = "POST";
httpRequest.Accept = "application/json";
httpRequest.Timeout = Convert.ToInt32(TimeSpan.FromDays(1).TotalMilliseconds);
var bytesToSend = Encoding.UTF8.GetBytes(content);
httpRequest.ContentType = "application/json;charset=utf-8";
httpRequest.ContentLength = bytesToSend.Length;
using (var requestStream = httpRequest.GetRequestStream())
requestStream.Write(bytesToSend, 0, bytesToSend.Length);
var httpResponse = httpRequest.GetResponse() as HttpWebResponse;
using (var responseReader = new StreamReader(httpResponse.GetResponseStream(), Encoding.UTF8))
{
responseReader.ReadToEnd();
}
}
catch (Exception ex)
{
// return "Error";
}
}
I am transferred to catch with the error, in this line:
var httpResponse = httpRequest.GetResponse() as HttpWebResponse;
would greatly appreciate any attempt to help.
Thank you!
I saw elsewhere that having the encoding set can cause issues with the Slack API.
Instead of setting the Content-Type header along with an encoding, try only setting the Content-Type header to application JSON.
Replace this line:
httpRequest.ContentType = "application/json;charset=utf-8";
With this line:
httpRequest.Headers.Add(HttpRequestHeader.ContentType, "application/json");
I'm attempting to access a remote API and I'm getting a few exceptions during the HTTPWebResponse call. Below is my code:
//url
string responseValue = string.Empty;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create("www.someapi.com")
request.Method = "GET";
request.UseDefaultCredentials = true;
request.ContentType = "application/json; charset=utf-8";
request.Headers("x-ms-client-id", "data");
try{
using (var response = (HttpWebRequest)req.GetResponse()){ <--- this line is the one that fails. System.IO.IOException here.
using (var stream = response.GetResponseStream()){
using(var sr = new StreamReader(stream)){
responseValue = sr.ReadToEnd();
}
}
}
} catch ///catch
The errors I'm getting are SocketExceptions and WebExceptions. I'm not sure why this specific call is failing. When I attempt the same URL and headers in Postman, the call returns a 200.
Any ideas would be appreciated.
EDIT:
Adding the error messages I'm getting. The exception being thrown when the response is attempted is
System.IO.IOException: "Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host."
Usually, I often use HttpWebRequest like below code.
You can download the HttpHelper I compiled and call it according to my reference example, or you can add Http Header as required.
How to invoke HttpHelper, ex: Get Method
Console app to use azure storage tableapi
String PostParam = String.Empty;
if (Data != null)
{
PostParam = Data.ToString();//Newtonsoft.Json.JsonConvert.SerializeObject(Data);
}
byte[] postData = Encoding.UTF8.GetBytes(PostParam);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(new Uri(url + (Id == null ? "" : '/' + Id.ToString())));
request.Method = Method;
request.ServicePoint.Expect100Continue = false;
request.Timeout = HttpRequestTimeOut;
request.ContentType = "application/json";
request.ContentLength = postData.Length;
if (postData.Length > 0)
{
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(postData, 0, postData.Length);
}
}
using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
Response.Code = response.StatusCode;
using (StreamReader stream = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
Response.Data = stream.ReadToEnd();
}
}
I have a web app hosted in azure. When I use postman to make the request I get a
json result, which is the correcet response. When I try to make the same request via C# using the same token I receive a errpr - The remote server returned an error: (401) Unauthorized.
here is the code I use to make the request.
public string RequestData(string queryString, string token)
{
var request = (HttpWebRequest)WebRequest.Create(queryString);
request.Proxy = GetProxy();
request.Credentials = CredentialCache.DefaultCredentials;
request.PreAuthenticate = true;
request.UseDefaultCredentials = true;
request.Method = "GET";
request.ContentType = "application/json";
request.ContentLength = 0;
request.CookieContainer = new CookieContainer();
request.Headers.Add("authorization", "Bearer " + token);
using (var webresponse = request.GetResponse())
{
if (webresponse.GetResponseStream() == Stream.Null)
{
throw new Exception("Response stream is empty");
}
var response = (HttpWebResponse)webresponse;
if (response.StatusCode != HttpStatusCode.OK)
{
return response.StatusCode.ToString();
}
else
{
return response.StatusCode.ToString();
}
}
}
I have double checked the token to ensure it is correct and it is.
Another point I wanted to mention is that it did not work initially in
Postman without enabling Interceptor. This goes for Advanced Rest Client.
The request did not work until I enabled "XHR" and installed ARC cookie exchange.
I have checked the request headers in Fiddler and noticed there are no additional headers except for the authorization one (which I add as well).
UPDATE:
I got a successfull response in Postman (https://www.getpostman.com/)
and ran the code it generated for c# using RestSharp. In the response
the error thrown was
"You do not have permission to view this directory or page."
Which points to the token not being correct. Which is confusing since it works
in Postman and Advanced Rest Client. Also I must mention I retrieve the token
on each call using the clientid and secret using the following code:
public async static Task<AzureAccessToken> CreateOAuthAuthorizationToken(string clientId, string clientSecret, string resourceId, string tenantId)
{
AzureAccessToken token = null;
var oauthUrl=string.Format("https://login.microsoftonline.com/{0}/oauth2/token", tenantId);
var reqBody = String.Format("grant_type=client_credentials&client_id={0}&client_secret={1}",clientId, clientSecret);
var client = new HttpClient();
HttpContent content = new StringContent(reqBody);
content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/x-www-form-urlencoded");
using (HttpResponseMessage response = await client.PostAsync(oauthUrl, content))
{
if (response.IsSuccessStatusCode)
{
DataContractJsonSerializer serializer = new DataContractJsonSerializer(typeof(AzureAccessToken));
Stream json = await response.Content.ReadAsStreamAsync();
token = (AzureAccessToken)serializer.ReadObject(json);
return token;
}
return null;
}
}
after checking the log in azure, I saw the following error message:
JWT validation failed: IDX10214: Audience validation failed. Audiences: '00000002-0000-0000-c000-000000000000'. Did not match: validationParameters.ValidAudience: 'f50a9d02-b8f4-408f-aaf8-0046e6cbf7a6' or validationParameters.ValidAudiences: 'null'.
I resolved the issue by adding '00000002-0000-0000-c000-000000000000' to the "Allowed Token Audiences" under Azure Active Directory Settings.
I have called third party API. When I use postman to make the request I get a json result, which is the correct response. When I try to make the same request via C# using the same token I receive a error - The remote server returned an error: (401) Unauthorized. Finally I got the solution.
When I make the login request some cookies will send by the server and that cookie will store in postman. If you see code snippet you will see information about request that is raised by postman.
When I call the Login method I stored the cookies like below:
public ResponseData OnGetResponseFromAPI(string URL, string Method, string PostData = null, Dictionary<string, string> Headers = null, string body = null, string ContentType = "application/json")
{
ResponseData response = new ResponseData();
try
{
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
var webRequest = (HttpWebRequest)WebRequest.Create(URL);
CookieContainer cookieJar = new CookieContainer();
webRequest.CookieContainer = cookieJar;
webRequest.Method = Method;
webRequest.ContentType = ContentType;
if (Method == "GET")
{
var type = webRequest.GetType();
var currentMethod = type.GetProperty("CurrentMethod", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(webRequest);
var methodType = currentMethod.GetType();
methodType.GetField("ContentBodyNotAllowed", BindingFlags.NonPublic | BindingFlags.Instance).SetValue(currentMethod, false);
}
if (Headers == null)
Headers = new Dictionary<string, string>();
foreach (KeyValuePair<string, string> header in Headers)
{
webRequest.Headers.Add(header.Key, header.Value);
}
if (!string.IsNullOrEmpty(PostData))
{
var RequestStream = new StreamWriter(webRequest.GetRequestStream());
RequestStream.Write(PostData);
RequestStream.Close();
}
if (!string.IsNullOrEmpty(body))
{
byte[] byteArray = Encoding.UTF8.GetBytes(body);
webRequest.ContentLength = byteArray.Length;
Stream dataStream = webRequest.GetRequestStream();
dataStream.Write(byteArray, 0, byteArray.Length);
dataStream.Close();
}
var ResponseStream = new StreamReader(webRequest.GetResponse().GetResponseStream());
string cookie = string.Empty;
CookieCollection allCookies = cookieJar.GetCookies(webRequest.RequestUri);
foreach (Cookie c in allCookies)
{
cookie = cookie + c.Name + "=" + c.Value+";";
}
cookie = cookie.Substring(0, cookie.LastIndexOf(';'));
var ResponseData = ResponseStream.ReadToEnd();
response.response=ResponseData.ToString();
response.cookie=cookie;
return response;
}
catch (WebException webException)
{
if (webException == null || webException.Response == null)
return null;
var responseStream = webException.Response.GetResponseStream() as MemoryStream;
if (responseStream == null)
return null;
var responseBytes = responseStream.ToArray();
var responseString = Encoding.UTF8.GetString(responseBytes);
response.response = responseString;
return response;
}
}
Whenever I am calling any api method I am sending token and cookie in header like below:
public string DownLoadDocument( string FilePath, string FileName, string token,string cookie)
{
try
{
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
HttpWebRequest webRequest;
webRequest = (HttpWebRequest)WebRequest.Create(URL);
webRequest.Method = "GET";
webRequest.ContentType = "application/octet-stream;charset=UTF-8";
webRequest.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1";
webRequest.Headers.Add("Cookie", cookie);
webRequest.Headers.Add("Authentication", "Bearer "+token);
webRequest.Headers.Add("Content-Disposition", "attachment");
Stream responseReader = webRequest.GetResponse().GetResponseStream();
using (var fs = new FileStream(FilePath, FileMode.Create))
{
responseReader.CopyTo(fs);
}
}
catch (Exception ex)
{
throw;
}
return FilePath;
}
Everything was working fine until a couple days ago, I started getting an Unauthorized error when trying to get a Nest Access Token. I've double checked and the client ID and client secret code are all correct. Any ideas on what could be causing it?
HttpWebRequest request = WebRequest.CreateHttp("https://api.home.nest.com/oauth2/access_token?");
var token = await request.GetValueFromRequest<NestToken>(string.Format(
"client_id={0}&code={1}&client_secret={2}&grant_type=authorization_code",
CLIENTID,
code.Value,
CLIENTSECRET));
public async static Task<T> GetValueFromRequest<T>(this HttpWebRequest request, string postData = null)
{
T returnValue = default(T);
if (!string.IsNullOrEmpty(postData))
{
byte[] requestBytes = Encoding.UTF8.GetBytes(postData);
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
using (var postStream = await request.GetRequestStreamAsync())
{
await postStream.WriteAsync(requestBytes, 0, requestBytes.Length);
}
}
else
{
request.Method = "GET";
}
var response = await request.GetResponseAsync();
if (response != null)
{
using (var receiveStream = response.GetResponseStream())
{
using (var reader = new StreamReader(receiveStream))
{
var json = await reader.ReadToEndAsync();
var serializer = new DataContractJsonSerializer(typeof(T));
using (var tempStream = new MemoryStream(Encoding.UTF8.GetBytes(json)))
{
return (T)serializer.ReadObject(tempStream);
}
}
}
}
return returnValue;
}
While I can't provide an answer I can confirm the same thing is happening to my iOS app in the same timeframe.
Taking my url and post values works fine using postman in chrome. Alamofire is throwing up error 401, as is native swift test code like yours.
Have Nest perhaps changed their https negotiation?
This turned out to be because of a fault on Nest's end which was later fixed.
I want to login to this site: http://subcard.subway.co.uk/de_cardholder/JSP/login_reg.jsp
And i found out that I have to send a POST request to the server and I also know that I have to work with this POST request:
POST /de_cardholder/servlet/SPLoginServlet HTTP/1.1
Host: subcard.subway.co.uk
language=de&userID=ID&password=PASSWORD&transIdentType=1&programID=6
And after the login I want to parse the HTML data. But how can I implement the POST request on WP in C# and is it as easy as I think?
Try this,
Uri RequestUri = new Uri("subcard.subway.co.uk/de_cardholder/servlet/SPLoginServlet HTTP/1.1?language=de&userID=ID&password=PASSWORD&transIdentType=1&programID=6", UriKind.Absolute);
string PostData = "";
WebRequest webRequest;
webRequest = WebRequest.Create(RequestUri);
webRequest.Method = "POST";
webRequest.ContentType = "text/xml";
HttpWebResponse response;
string Response;
using (response = (HttpWebResponse)await webRequest.GetResponseAsync()) ;
using (Stream streamResponse = response.GetResponseStream())
using (StreamReader streamReader = new StreamReader(streamResponse))
{
Response = await streamReader.ReadToEndAsync();
}
if(Response != null)
{
//data should be available in Response
}
var postRequest = (HttpWebRequest)WebRequest.Create("your Url here");
postRequest.ContentType = "application/x-www-form-urlencoded";// you can give the type of request content here
postRequest.Method = "POST";
if you have any data to be posted along with the request as part of content and not as part of URL itself you can add this. example:- ( language=de&userID=ID&password=PASSWORD&transIdentType=1&programID=6)
using (var requestStream = await postRequest.GetRequestStreamAsync())
{
byte[] postDataArray = Encoding.UTF8.GetBytes("your request data");
await requestStream.WriteAsync(postDataArray, 0, postDataArray.Length);
}
if you do not have any data to be a send as content ignore the above code
WebResponse postResponse = await postRequest.GetResponseAsync();
if (postResponse != null)
{
var postResponseStream = postResponse.GetResponseStream();
var postStreamReader = new StreamReader(postResponseStream);
string response = await postStreamReader.ReadToEndAsync();// Result comes here
}