We're trying to receive payment with cryptocurrencies using coinpayment IPN. We are able to create a request and able to do a payment. However, not able to get success or failure response while user come back to the seller side.
Here is how payment request created:
public ActionResult IPN()
{
var uri = new UriBuilder("https://www.coinpayments.net/index.php");
uri.SetQueryParam("cmd", "_pay_auto");
uri.SetQueryParam("merchant", "merchant_key");
uri.SetQueryParam("allow_extra", "0");
uri.SetQueryParam("currency", "USD");
uri.SetQueryParam("reset", "1");
uri.SetQueryParam("success_url", "http://localhost:49725/home/SuccessResponse"); //todo: redirect to confirm success page
uri.SetQueryParam("key", "wc_order_5b7b84b91a882");
uri.SetQueryParam("cancel_url", "http://localhost:49725/home/FailiureResponse");
uri.SetQueryParam("order_id", "36");
uri.SetQueryParam("invoice", "PREFIX-36");
uri.SetQueryParam("ipn_url", "http://localhost:49725/?wc-api=WC_Gateway_Coinpayments");
uri.SetQueryParam("first_name", "John");
uri.SetQueryParam("last_name", "Smith");
uri.SetQueryParam("email", "a#a.com");
uri.SetQueryParam("want_shipping", "1");
uri.SetQueryParam("address1", "228 Park Ave S&address2");
uri.SetQueryParam("city", "New York");
uri.SetQueryParam("state", "NY");
uri.SetQueryParam("zip", "10003-1502");
uri.SetQueryParam("country", "US");
uri.SetQueryParam("item_name", "Order 33");
uri.SetQueryParam("quantity", "1");
uri.SetQueryParam("amountf", "100.00000000");
uri.SetQueryParam("shippingf", "0.00000000");
return Redirect(uri.ToString());
}
This will be redirected to the coinpayment site, once payment done, it is showing the following screen.
And trying to get data when user click on back to seller's site, I have tried to get data using Request.Form, but not getting any value in form.
The same thing, working with this woocommerce code, but I have no idea of PHP and how they are dealing with it.
Any thought to get IPN response?
Note: there is no development documentation or sample code available for IPN in .NET
Edit
I'm trying to get value from IPN success
Public ActionResult SuccessResponse()
{
var ipn_version = Request.Form["ipn_version"];
var ipn_id = Request.Form["ipn_id"];
var ipn_mode = Request.Form["ipn_mode"];
var merchant = Request.Form["merchant"];
var txn_id = Request.Form["txn_id"];
var status = Request.Form["status"];
return Content(status);
}
You cannot use localhost for a IPN callback. You must use a public domain name.
As an example I would change the following parameters:
var uri = new UriBuilder("https://www.coinpayments.net/api.php");
uri.SetQueryParam("success_url", "http://kugugshivom-001-site1.atempurl.com/Home/SuccessResponse");
uri.SetQueryParam("cancel_url", "http://kugugshivom-001-site1.atempurl.com/Home/FailiureResponse");
uri.SetQueryParam("ipn_url", "http://kugugshivom-001-site1.atempurl.com/Home/CoinPaymentsIPN"); // Public ActionResult CoinPaymentsIPN()
Since you are creating your own gateway you also need to implement it properly as described in the documentation at CoinPayments API and Instant Payment Notifications (IPN).
I have tested your success_url endpoint, and got status code: 100 (when entering status:100). I see you use form-data, but I don't know if that's on purpose / required.
Postman POST http://kugugshivom-001-site1.atempurl.com/Home/SuccessResponse
In Body tab form-data is selected with Bulk Edit values:
ipn_version:1.0
ipn_type:api
ipn_mode:hmac
ipn_id:your_ipn_id
merchant:your_merchant_id
txn_id:your_transaction_id
status:100
As updated answer stated by #Gillsoft AB, you should need to use valid IPN URL from the code end. Also webhook would not work with localhost. thus, you should listen the request with live server.
Simplest way to check webhook response is to use online tool such as Webhook Tester, it will provide an URL which you have to set as your IPN URL, whenever server will sends the data, you can simply see it to the web. To check that, create one URL and set as your IPN URL as below:
uri.SetQueryParam("ipn_url", "https://webhook.site/#/457f5c55-c9ce-4db4-8f57-20194c17d0ae");
After that run the payment cycle from local machine, payment server will sends notification to that IPN URL.
Make sure you understood it right! success_url and cancel_url are for user redirection, you will not get any response code over there, inspection of seller's store URL give your exact same URL that you have been passing though, so it is recommended to use unique URLs for each order(i.e add order id at last to the URL) which will give you an idea which order payment has been done or canceled.
http://localhost:49725/home/SuccessResponse?orderid=123
In order to test your local code, add following changes and deployed it to server.
1) Add one new method which will listen IPN response
[ValidateInput(false)]
public ActionResult IPNHandler()
{
byte[] param = Request.BinaryRead(Request.ContentLength);
string strRequest = Encoding.ASCII.GetString(param);
//TODO: print string request
//nothing should be rendered to visitor
return Content("");
}
2) Pass IPN URL while creating a request:
public ActionResult IPN()
{
var uri = new UriBuilder("https://www.coinpayments.net/index.php");
...
..
uri.SetQueryParam("success_url", "http://localhost:49725/home/SuccessResponse");
uri.SetQueryParam("cancel_url", "http://localhost:49725/home/FailiureResponse");
uri.SetQueryParam("ipn_url", "http://localhost:49725/home/IPNHandler");
....
..
return Redirect(uri.ToString());
}
You will get all status code responses in IPNHandler method.
Hope this helps!
Related
I'm integrating Amazon pay with my website, using the v2 c# SDK from amazon (MVC App), in the sandbox. Setup is all good, I created the keys, return urls, etc.
In my checkout process, I create the CheckoutSession, which is successful. I click on the Amazon Pay button, log in using my test buyer account, and "pay" for the item using their valid test credit card.
Amazon redirects to my return URL with the checkout session id as expected.
When I try to CompleteCheckoutSession, the result is an error back from the Amazon API
error: InvalidCheckoutSessionStatus
message: You tried to call an operation on a Checkout Session that is in a state where that operation is not allowed
I put in a test line of code to retrieve the CheckoutSession to look at it before I try to complete it, and it shows that the current status is "Open", which is the correct status when trying to complete it, so I'm at a loss at why the checkout session status is invalid.
EDIT:
Note I'm using this flow for my transaction, so there is no "review" of the transaction. Buyer chooses his items on my site.
https://amazonpaycheckoutintegrationguide.s3.amazonaws.com/amazon-pay-apb-checkout/additional-payment-button-overview.html
Also note, I'm creating the payload dynamically according to this:
https://amazonpaycheckoutintegrationguide.s3.amazonaws.com/amazon-pay-checkout/amazon-pay-script.html#render-button-using-a-checkout-session-object
So when the amazonpay button is clicked, it calls a method on my site which builds the payload which begins the CheckoutSession. I then have the Amazon Session ID in my cache which I save it, and save the total. The payload is returned to the Amazon pay script which then takes me to the Amazon Site. I choose the payment type and click "continue to checkout", which sends me back to my site with the SessionId to do the "complete" step.
My request to CompleteCheckoutSession(sessionId)
{"chargeAmount":{"amount":99,"currencyCode":"USD"}}
result.RawResponse from the client.CompleteCheckoutSession(sessionId) method:
{
"reasonCode":"InvalidCheckoutSessionStatus",
"message":"You tried to call an operation on a Checkout Session that is in a state where that operation is not allowed"
}
EDIT SAMPLE CODE:
I created a brand new test MVC app with basic functionality:
public ActionResult Index()
{
var client = InitiateClient(); //hidden for security
// prepare the request
var request = new CreateCheckoutSessionRequest
(
checkoutReviewReturnUrl: "http://localhost:44300/home/completecheckout",
storeId: "amzn1.application-oa2-client.mystoreid"
);
request.PaymentDetails.PaymentIntent = Amazon.Pay.API.WebStore.Types.PaymentIntent.AuthorizeWithCapture;
request.PaymentDetails.ChargeAmount.Amount = 99;
request.PaymentDetails.ChargeAmount.CurrencyCode = Currency.USD;
// generate the signature and payload string that is passed back to the frontend
ViewBag.Signature = client.GenerateButtonSignature(request);
ViewBag.Payload = request.ToJson();
return View();
}
In the Index.cshtml file:
<div id="AmazonPayButton"></div>
<script src="https://static-na.payments-amazon.com/checkout.js"></script>
<script type="text/javascript" charset="utf-8">
amazon.Pay.renderButton('#AmazonPayButton', {
merchantId: 'mymerchantid',
ledgerCurrency: 'USD',
sandbox: true,
checkoutLanguage: 'en_US',
productType: 'PayOnly',
placement: 'Checkout',
buttonColor: 'Gold',
createCheckoutSessionConfig: {
payloadJSON: '#Html.Raw(ViewBag.Payload)', // string generated in step 2
signature: '#Html.Raw(ViewBag.Signature)', // signature generated in step 3
publicKeyId: 'AGPTYXGL5VH6PSYLJUSHTKW6'
}
});
</script>
And finally, the completecheckout code, which is unsuccessful:
public ActionResult CompleteCheckout(string amazonCheckoutSessionId)
{
var client = InitiateClient(); //hidden for security
var request = new CompleteCheckoutSessionRequest(99.00M, Currency.USD);
// send the request
var result = client.CompleteCheckoutSession(amazonCheckoutSessionId, request);
// check if API call was successful
if (!result.Success)
{
throw new Exception("API Call unsuccessful");
}
return View();
}
NOTE: certain keys obfuscated, but actual keys are in the sample code.
Manually creating the CheckoutSession doesn't work with the "no review page" flow that you are following. If you want to integrate this flow, you'll have to let Amazon Pay create the CheckoutSession for you using the createCheckoutSessionConfig parameter in the button code, see here: https://amazonpaycheckoutintegrationguide.s3.amazonaws.com/amazon-pay-apb-checkout/add-the-amazon-pay-button.html#4-render-the-button
EDIT:
The code sample below shows how to construct the payload and signature for the 'no order review' payment flow. Please note the CheckoutMode parameter, that instructs Amazon Pay to immediately process the payment, and the checkoutResultReturnUrl, that defines the URL where the buyer is sent to for completing the checkout. When the user arrives at that URL, you will have to call Complete CheckoutSession, which should now succeed.
public ActionResult Index()
{
var client = InitiateClient(); //hidden for security
// prepare the request
var request = new CreateCheckoutSessionRequest
(
checkoutReviewReturnUrl: null,
storeId: "amzn1.application-oa2-client.mystoreid"
);
// instructs Amazon Pay to immediately process the payment
request.WebCheckoutDetails.CheckoutMode = CheckoutMode.ProcessOrder;
request.WebCheckoutDetails.CheckoutResultReturnUrl = "http://localhost:44300/home/completecheckout";
// payment details
request.PaymentDetails.PaymentIntent = Amazon.Pay.API.WebStore.Types.PaymentIntent.AuthorizeWithCapture;
request.PaymentDetails.ChargeAmount.Amount = 99;
request.PaymentDetails.ChargeAmount.CurrencyCode = Currency.USD;
// generate the signature and payload string that is passed back to the frontend
ViewBag.Signature = client.GenerateButtonSignature(request);
ViewBag.Payload = request.ToJson();
return View();
}
I had a similar issue and it takes me a very long time to figure it out. This is what happened to me.
I was not intent to create production code. I just want to create a test page with only Amazon Pay button. I used several node js script to getCheckoutSession/updateCheckoutSession. However, when I tried completeCheckoutSession, I got "InvalidCheckoutSessionStatus".
In the end, I found, after I setup all the required parameter and remove all constraint, the updateCheckoutSession gives me a "amazonPayRedirectUrl" in API return. That URL is really important. You need to go that URL in order to complete the review...
This is from Amazon official website:
"Once there are no constraints, the response will return a unique
amazonPayRedirectUrl. Redirect the buyer to that URL to complete
checkout."
The other way to solve this issue is mentioned by "Daniel Lemke". In that way, shoppers don't need to confirm the session. However, you need to make sure to provide all useful information in webCheckoutDetails (paymentDetails, addressDetails). If you only give checkoutMode, you will get "MissingParameterValue".
This is from Amazon official website:
"paymentDetails is required when using 'ProcessOrder'. addressDetails
is also required if you use 'ProcessOrder' with productType set to
'PayAndShip'"
I'm developing a graphic user interface where the user can send a message to mutuple user using Twilio API in c#
I'm trying to bind a list view to the status of each number being sent and I also want to know the status of the message every time the user click on refresh list view
public void sendSMS(string ssid, string token , string fromNumber, List<string>TOnumbersList ,string msgBody )
{
TwilioClient.Init(ssid, token);
foreach (var toNumber in TOnumbersList)
{
var message = MessageResource.Create(
to: new PhoneNumber(toNumber),
from: new PhoneNumber(fromNumber),
body: msgBody,
provideFeedback: true,
statusCallback: new Uri("http://requestb.in/1jnk4451"));
ListViewItem items = new ListViewItem(message.To);//This show the number being sent to ( delivered number)
items.SubItems.Add(message.Status.ToString()); //Refresh the status WHERE number = message.To
items.SubItems.Add(message.ErrorCode.ToString());//Show error code in case
items.SubItems.Add(message.ErrorMessage); // In case error message show them
listView1.Items.AddRange(new ListViewItem[] { items });
}
}
Twilio API is doing the perfect job updating the status so everytime I go click the link I can see the status. as explained in this documentation Track Delivery Status of Messages in C#
But is It possible to bind a list view so it can be updated everytime the user click on refresh list view ?
Or what is the best way to dynamically show the message status from the URI http://requestb.in/1jnk4451? Maybe embedding a webpage would be better ?
Thank you
Twilio developer evangelist here.
Rather than using the RequestBin URL, if you provide a URL to your own application then you can write an endpoint that receives the status updates of the messages. That way you can store the status yourself and update the list view without having to loop through all the messages.
[Edit] In more detail:
When you send an SMS message with Twilio using the REST API you can set a statusCallback URL to receive updates about the message as it processes through from Twilio to the network and the device.
Twilio will make HTTP requests to this URL as the message goes through each state, the possible states being queued, failed, sent, delivered, or undelivered. Twilio sends a number of parameters as part of this request, some are general ones about the message and some are about the actual status.
To receive these requests you need to set up a web server. I'm not a C# developer I'm afraid, however we have a guide on how to set up a C# and ASP.NET MVC environment that can receive webhooks that should be able to help you there.
Let me know if this helps a bit more!
let's say I have an email account and every time I get a new email I want to receive this information in my c# code and save some info of that email in json format, I have read about Context.IO, Webhooks, but I have not find any information yet about doing it with C# code, could you please give an advice of how can I reach that in my c# code? I have an ASP.net MVC app, I just want to get some data about a new email every time is received, I have never worked before with Context.IO or webhooks. How can I do this in C#?
UPDATE:
[HttpPost]
[System.Web.Mvc.ValidateInput(false)]
public IHttpActionResult GetEmail(System.Web.Mvc.FormCollection form)
{
Person person = new Person {
Name= System.Web.HttpContext.Current.Request.Unvalidated.Form["Account_id"],
LastName= System.Web.HttpContext.Current.Request.Unvalidated.Form["webhook_id"]
};
db.People.Add(person);
db.SaveChanges();
return Ok();
}
Context.IO pretty much does what you're looking for with webhooks. Essentially, you would setup a webhook filter on a user (https://context.io/docs/lite/users/webhooks) and provide which filters to watch out for, if any. Set up an endpoint on your app to receive the webhooks, and when a new message is received by the user, you should receive a webhook postback on that endpoint.
If you just want to test out the webhooks without setting up an endpoint on your end, I would recommend a tool like Mockbin, which allows you to set up mock endpoints and receive data http://mockbin.org/
The payload is in json, so it should be easy to parse on your end. The only thing is that Context.IO does not have a C# library, but you could use a library of your choice (or something like restsharp) to develop straight against the REST API.
I've been trying to set up PayPal Webhooks (in Sandbox mode) to receive notifications about declined and successful payments. My problem is that I can't get validation working. Some details about my attempts:
The app is an OWIN self-hosted Web API 2.
Hosted as an Azure Web App, tested on Azure as well.
I set the Paypal Webhook receiver URL in the Paypal dashboard to the URL of my endpoint on Azure.
I used the Paypal Webhooks simulator from the Paypal dashboard to send a message to the Azure endpoint.
I tried listening for Webhook calls two ways:
ASP.NET Webhook Receivers (http://blogs.msdn.com/b/webdev/archive/2015/09/04/introducing-microsoft-asp-net-webhooks-preview.aspx), which didn't work. I get the error message "WebHook validation failed: "
Tried creating a Web API endpoint to receive and validate the request, didn't work either. Code here:
[HttpPost]
public async Task<IHttpActionResult> PaymentCaptureCompleted()
{
// Get the received request's headers
NameValueCollection nvc = new NameValueCollection();
foreach (var item in Request.Headers)
{
nvc.Add(item.Key, string.Join(",", item.Value));
}
// Get the received request's body
var requestBody = await Request.Content.ReadAsStringAsync();
var isValid = WebhookEvent.ValidateReceivedEvent(Api, nvc, requestBody, ConfigurationManager.AppSettings["paypal.webhook.id"]);
if (isValid)
{
return Ok();
}
else
{
return BadRequest("Could not validate request");
}
}
There are a lot more details to this of course, but I'm not sure how much information is required to answer my question. Just let me know what you need and I'll edit this question.
Please refer PayPal Dot Net SDK for code samples. https://github.com/paypal/PayPal-NET-SDK
Also if your simulator is not working, to rule out if there is something wrong with the configuration of webhook or the azure, you may want to use Runscope. Ypu can configure a Runscope bucket as a webhook endpoint and If you are getting a webhook notification there, you may need to make changes in the Azure config.
Really don`t go to the documentation. It is old but objects is still good.
You can use WebhookEvent class for it.
Just use this action in your controller.
public JsonResult Index(WebhookEvent event)
{
// event has all the data
return Json(new { success = true });
}
Validation does not work for either IPN sandbox nor Webhook events from the mock. It's stated in the PayPal documentation. Validation only works on the production environment of PayPal.
Wrap WebhookEvent.ValidateReceivedEvent in a try catch. If the call fails, it can just hang without that. The exception will show you the error.
try
{
var isValid = WebhookEvent.ValidateReceivedEvent(apiContext, nv, requestBody, hookId);
}
catch(Exception e)
{
}
In my case the exception said "Unable to load trusted certificate"
Please bear with me for this slightly long winded description but I'm having a strange problem with C# screen scraping an ASP.NET web forms page. The steps I'm trying to do are as follows:-
1) The site is secured using basic authentication over HTTPS so I need to login appropriately.
2) I'm performing a GET request on the page to retrieve the __VIEWSTATE value (darn thing does nothing if I don't set this thing!)
3) Once logged in there are several form fields to complete then a submit button which POST's the form to the server
4) When the submit button is pressed the form is POST'd to the server and response is the same page and form but now with an extra little HTML table at the bottom of the form with some data I need to get at.
I've so far managed to sort the login and form post using the WebClient class. I've used fiddler (and firebug) to check the POST field values that are being sent when completing the form normally using a browser. I can successfully get a response from the POST request with the data table in question appearing below the form as expected. The problem however is that although the table is populated with data it is populated with data I don't expect. The data that appears is if I completed the form in a browser as normal but with one particular parameter (a drop down list) set to a different value than I'm passing in my POST request to the server. I've confirmed using fiddler and firebug that I'm passing exactly the same POST parameters that are sent as normal using a web browser human completed form. I'm now totally stuck as to why this one parameter is not being 'taken into consideration' by the server?
The one difference is that this particular control is a select list and it performs a page reload or 'postback' when changed. However this doesn't seem to do anything apart from change some other select lists content later in the form.
I guess I'm asking is there anything else I'm missing that would cause this? I'm totally tearing my hair out on this one. Can anyone help? I've posted the code below (with addresses and parameters blanked out for privacy).
// a place to store the html
string responseBody = "";
// create out web client to handle the request
using (WebClient webClient = new WebClient())
{
// space to store responses from the remote site
byte[] responseBytes;
// site uses basic authentication over HTTPS so we'll need to login
CredentialCache credentials = new CredentialCache();
credentials.Add(new Uri(Url), "Basic", new NetworkCredential(Username, Password));
// set the credentials in the web client
webClient.Credentials = credentials;
// a place for __VIEWSTATE
string viewState = "";
// try and get __VIEWSTATE from the web site
try
{
responseBytes = webClient.DownloadData(Url);
viewState = GetHtmlInputValue(Encoding.UTF8.GetString(responseBytes), "__VIEWSTATE");
}
catch (Exception e)
{
bool cancel = false;
ComponentMetaData.FireError(10, "Read web page data", "Error whilst trying to get __VIEWSTATE from web page: " + e.Message, "", 0, out cancel);
}
// add our POST parameters (don't forget the __VIEWSTATE or it won't work as its an ASP.NET web page)
NameValueCollection requestParameters = new NameValueCollection();
// add ASP.NET fields
requestParameters.Add("__EVENTTARGET", __EVENTTARGET);
requestParameters.Add("__EVENTARGUMENT", __EVENTARGUMENT);
requestParameters.Add("__LASTFOCUS", __LASTFOCUS);
// add __VIEWSTATE
requestParameters.Add("__VIEWSTATE", viewState);
// all other form parameters
requestParameters.Add("btnSubmit", btnSubmit);
/* I've hidden the rest of the parameters hidden for privacy just in case */
// see if we can connect and get data
try
{
// set content type
webClient.Headers.Clear();
webClient.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
// 'POST' the form data using web client and hope we get a response
responseBytes = webClient.UploadValues(Url, "POST", requestParameters);
// transform the response to a string
responseBody = Encoding.UTF8.GetString(responseBytes);
}
catch (Exception e)
{
bool cancel = false;
ComponentMetaData.FireError(10, "Read web page data", "Error whilst trying to connect to web page: " + e.Message, "", 0, out cancel);
}
}
Please ignore the 'ComponentMetaData' references as this is part of SSIS script source.
Any ideas or help will be greatly appreciated - cheers!
RE: thanks for the quick responses, all I can say to those comments is...
There's the normal ASP session cookie but there's no values in the cookie (apart from the session ID of course), I figured as the site is using basic authentication not forms authentication I could just ignore the cookie - and as I'm getting into the site and getting data returned this was ok. I guess it's worth a try but I'll have to just alter the code to use the WebRequest class method instead...
As for the select list javascript, no there's no javascript changing the value of the select list after page load. The only javascript on the select list is an onchange event to do a 'postback' which only seems to change some other select lists on the form that are empty anyway in the final POST. Note I'm including all the POST parameters when generating the POST request even if they're empty and I'm also including all the 'web forms' special fields such as __VIEWSTATE, __EVENTTARGET etc...
I'm no expert in web forms (MVC man myself) but is there anything else that the web forms 'engine' is expecting? I've sent 1 header for the 'Content-Type' of 'application/x-www-form-urlencoded' but I've tried setting others such as copying the 'User-Agent' header from the original POST but this ends up with me getting a 500 error from the server, not sure why that would happen??
Here's the code for the 'GetHtmlInputValue' its a bit simple/basic and could be done better but:-
private string GetHtmlInputValue(string html, string inputID)
{
string valueDelimiter = "value=\"";
int namePosition = html.IndexOf(inputID);
int valuePosition = html.IndexOf(valueDelimiter, namePosition);
int startPosition = valuePosition + valueDelimiter.Length;
int endPosition = html.IndexOf("\"", startPosition);
return html.Substring(startPosition, endPosition - startPosition);
}
If I understand you correctly, then selecting an item in the dropdown will cause a POST to be performed, and the server alters the available options in another part of the form. The server will then include the current value of the dropdown in the __VIEWSTATE field value.
When you perform the scraping, you should make sure that the __VIEWSTATE contains the desired value for the dropdown. To investigate further, try to decode the viewstate from the server and see which values are sent back.