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• paypal express checkout integration in asp classic

  - by Noam Smadja

  i am trying to figure this out for almost a week now.. with no success.. i am coding in ASP and would love to receive some help. i am following the steps from paypal wizard here: https://www.paypal-labs.com/integrationwizard/ecpaypal/code.php i am collecting all the information on my website i just want to pass it to paypal when the buyer clicks checkout. so i pointed the checkout form to expresschackout.asp as pointed in the wizard. but when i click on the paypal button i get a white page with nothing. no errors no nothing. it just hangs there on expresscheckout.asp shopping cart: ..code showing a review of the shopping cart.. ..i saved the total amount into SESSION("Payment_Amount").. <form action='cart/expresscheckout.asp' METHOD='POST'> <input type='image' name='submit' src='https://www.paypal.com/en_US/i/btn/btn_xpressCheckout.gif' border='0' align='top' alt='Check out with PayPal'/> </form>

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• Paypal Error - IPN Validation Failed.

  - by user504178

  Hello , I am getting below error. [12/26/2010 5:48 AM] - FAIL: IPN Validation Failed. IPN POST Vars from Paypal: auth=A76zglTH7sCSLAVjZISTEp38SYXWAoNlO1uurxDvnlFy40uy-mlrvqkp_S5q3bFhVBbO2GwpJRvdYDvfQuM0581EYkEITS1SnDzfWV-ju60OZm_VzHsc8o2Q8K7mmZuDs9ANFwW9iIP2Ig8fGPSwZN8APK2PtCMIda28rBnNMJ2FWaeNKgmzTCuG5HnpzLD7ZtTCElp4MC05kyx9Ro-9ggqzVx7OU1zleJ_c1W, form_charset=UTF-8, IPN Response from Paypal Server: HTTP/1.1 200 OK Date: Sun, 26 Dec 2010 10:48:50 GMT Server: Apache Set-Cookie: c9MWDuvPtT9GIMyPc3jwol1VSlO=Ejohjh-kFgFpKAeNiYlgG8LwsLOi5Sir4Ut7tXINWaRmWM2eNXfFkJRQmO09WqBbXWIpXd0ydzrS7JMWO0sHZMg0Wfdd4gt6UcpSswiiUl2EfiP_ykxKJOFOzcjMrn_6xzc8GG%7c5mvwkJOzeFg-vpKR1fovKAVDyvmzI5sFbPatUC6gbf9Wk4Llel4btOJa7uQbYSLhuprHVG%7c537g5xvn4Hns8l-HE1pnyQ2GUAxcSINm-oVJENMuU6yS_bYa4IAw4QlGP-0zq80pjZa5j0%7c1293360531; domain=.paypal.com; path=/ Set-Cookie: cookie_check=yes; expires=Wed, 23-Dec-2020 10:48:51 GMT; domain=.paypal.com; path=/ Set-Cookie: navcmd=_notify-validate; domain=.paypal.com; path=/ Set-Cookie: navlns=0.0; expires=Sat, 21-Dec-2030 10:48:51 GMT; domain=.paypal.com; path=/ Set-Cookie: Apache=10.191.196.11.222161293360530699; path=/; expires=Sat, 12-Nov-04 04:20:34 GMT Connection: close Transfer-Encoding: chunked Content-Type: text/html; charset=UTF-8 7 INVALID 0 Can anyone please let me know whats wrong over here. Regards, Atul

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• Can I send a variable to paypal, and have it post it back to me when payment completes?

  - by Yegor

  Ive been using express checkout API to convert people's accounts on my site to premium accounts after paying. The only problem with it is that it doesn't send the user back to the site until they click the button to return, and it updates their permission when that happens. About 40% of the users don't seem to do that.... so their accounts never get credited after payment. Although paypal does an instant post-back upon the successful payment, I was never able to make it actually update the user's account right away, since I cant get it to send back some sort of informational that would identify the user that just completed the payment. I could only do that when you are sent back to the site, which sends the transaction ID, that I logged with a post-back. It searches for it, and grants permission if it was found int he DB. Is there a way to submit some sort of a variable to paypal, that it will then post back to me? Something like &user_id=123, which would make it very handly to update the user's permission.

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• Paypal IPN: how get the POSTs from this class?

  - by sineverba

  I'm using this Class <?php class paypalIPN { //sandbox: private $paypal_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr'; //live site: //private $paypal_url = 'https://www.paypal.com/cgi-bin/webscr'; private $data = null; public function __construct() { $this->data = new stdClass; } public function isa_dispute() { //is it some sort of dispute. return $this->data->txn_type == "new_case"; } public function validate() { // parse the paypal URL $response = ""; $url_parsed = parse_url($this->paypal_url); // generate the post string from the _POST vars aswell as load the // _POST vars into an arry so we can play with them from the calling // script. $post_string = ''; foreach ($_POST as $field=>$value) { $this->data->$field = $value; $post_string .= $field.'='.urlencode(stripslashes($value)).'&'; } $post_string.="cmd=_notify-validate"; // append ipn command $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $this->paypal_url); //curl_setopt($ch, CURLOPT_VERBOSE, 1); //keep the peer and server verification on, recommended //(can switch off if getting errors, turn to false) curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $post_string); $response = curl_exec($ch); if (curl_errno($ch)) { die("Curl Error: " . curl_errno($ch) . ": " . curl_error($ch)); } curl_close($ch); return $response; if (preg_match("/VERIFIED/", $response)) { // Valid IPN transaction. return $this->data; } else { return false; } } } ANd i recall in this mode: public function get_ipn() { $ipn = new paypalIPN(); $result = $ipn->validate(); $logger = new Log('/error.log'); $logger->write(print_r($result)); } But I obtain only "VERIFIED" or "1" (whitout or with the print_r function). I just tried also to return directly the raw curl response with return $response; or return $this->response; or also return $this->parse_string; but everytime I receive only "1" or "VERIFIED"....... Thank you very much

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• Paypal Sandbox 2014 Non US test account Sign Up proper link

  - by Flood Gravemind

  Ok I had a Paypal Sandbox account a year ago. I am developing a new site for a client and when I try to Login it won't recognize my email address. I tried forgot my password forgot password still nothing. So I guessed that maybe due to inactivity for such a long time they may have deleted my account. So then I try to Sign Up for a new one. I entered my details 3 times now and spent 6 hours trying to figure out what is the proper link to do this. Then I went to another Sandbox link which required me to entered a US Zip code and its a dead end. I am not even sure which Paypal account I signed up for those three times. No email nothing at all. I am a Non US developer and the FAQ link for Non US developers just points to their REST API. Can someone please guide me to the proper Paypal Sandbox Setup for Non US developers including the proper sign up links please. And I know Stackoverflow does not like rants but from my experience dealing with Paypal, GTA 6 should make a satirical Paypal company in their next Game with Paypal Developer Rampage mode for the main protagonist who also happens to be a Developer. EDIT: REST API does not include UK :(

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• PayPal - changing recurrent payment to 1-time payment

  - by Deborah

  How do I change a recurring payment to a one-time payment in PayPal?

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• Strange behavior from Firefox and Paypal Plugin

  - by Fake Name

  Ok, so I use the paypal plugin with firefox, which is really nice because you can generate single use credit-cards on the fly. However, recently it's been acting strange. Normally, when you use the plugin, a drop-down window open in firefox. However, at some point (I'm not sure exactly when it happened, because I thought it wasn't working for a while) the drop-down window started appearing in thunderbird. As in, I click on the plugin button in firefox, and the plugin window immediately opens in Thunderbird. If Thunderbird is closed, the plugin does not open at all. I can use it normally this way (everything works except the receipt-saving function). but the whole affair seems a little odd to me. Is there any reason that could cause things to be redirected from one mozilla-application-window to another mozilla-application-window? Everything is up to date: Firefox 3.6.3 Thunderbird 3.0.5 Paypal Plugin 2.2.26.0

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• Sandbox "Sorry — your last action could not be completed"

  - by aron

  My site was working fine with PayPal's sandbox, and then all of a sudden it stopped. Now I get the wonderful error Sandbox "Sorry — your last action could not be completed" This is my HTML: <body onload="document.Paypal.submit();"> <!-- item_number should get passed back --> <form name="Paypal" method="post" action="https://www.sandbox.paypal.com cgi-bin/webscr" id="Paypal"> <div> <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUKLTkyNTEyNzc0NGRk0LKGvSMTla6LgHpbOsdk7iC0iXE=" /> </div> <div> <input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWCALKhatPArLPtrsEAreImG4CweeH+AkCgMPhowcC+NaM4gQC+Y2VqwoCouzSnwEVXI9UvQxqI2UcdQ4SmcSWqfEZNw==" /> </div> <input type="hidden" name="cmd" value="_cart" /> <input type="hidden" name="upload" value="1" /> <!-- The following is for itemized PayPal data instead of the aggregated version --> <input type="hidden" name="item_name_1" value="LEADING SKILLS 4/10/2012 6:00 PM Section: Members " /> <input type="hidden" name="amount_1" value="250.00" /> <input type="hidden" name="quantity_1" value="2" /> <input type="hidden" name="handling_cart" value="7.00" /> <input type="hidden" name="tax_cart" value="35.00" /> <!-- STANDARD DATA --> <input name="business" type="hidden" id="business" value="[email protected]" /> <input name="invoice" type="hidden" id="invoice" value="TS-1E8B59A0-B" /> <input type="hidden" name="no_note" value="0" /> <input name="currency_code" type="hidden" id="currency_code" value="USD" /> <input name="shipCountry" type="hidden" id="shipCountry" /> <input type="hidden" name="return" value="http://rockclimbing.venueblue.com/Gateway/paypal/Complete.aspx?id=db86c0bf-beb8-4e37-b495-bed1d3e7e6f3" /> <input name="cancel_returnUrl" type="hidden" id="cancel_returnUrl" value="http://rockclimbing.venueblue.com/ShoppingCart.aspx" /> <input type="hidden" name="cn" value="How did you hear about us?" /> <input name="custom" type="hidden" id="custom" value="db86c0bf-beb8-4e37-b495-bed1d3e7e6f3" /> <input name="notify_url" type="hidden" id="notify_url" value="http://rockclimbing.venueblue.com/Gateway/Paypal/IPN.aspx" /> <input type="submit" value="Submit Payment Info" style="display:none;" /> Processing Order.... </form> </body> Anyone have a clue what happened?

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• Passing a custom variable to the PayPal API

  - by Michael

  Gday All, I am developing a site that uses PayPal to take online payments. I need to be able to send my client an email with the link to PayPal in order to pay. In this link I need a way to set a unique value (for example bookingId) that I can use to add the receipt number to the correct booking via PayPal's payment notification feature. Does anyone know what custom value I can set in order to achieve this? Cheers, Michael

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• Zen Cart - Get Line items in Paypal?

  - by kylex

  Is there anyway to guarantee line items be displayed in PayPal instead of the very generic description for all items combined? For example, if someone orders 3 items with the total of $100.00, paypal shows one item with "Items Purchased" as the description and the total cost. I'd like an itemized list. Often I need to view the items in Paypal and just need to know if this is possible and how to set it up.

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• anybody seen some paypal IPN Listener for ASP.NET MVC

  - by Omu

  anybody seen some paypal IPN Listener code sample / implementation for ASP.NET MVC

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• "You have requested an outdated version of PayPal"

  - by porton

  When I being logged it in PayPal follow this link: https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_xclick;business=porton_1349611651_biz%40narod.ru;quantity=;item_name=Points;undefined_quantity=1;currency_code=ILS;no_shipping=1;no_note=1;return=http%3A%2F%2Fseostart.co.il%2Fcgi-bin%2Fuser%2Fhome.pl;cancel_return=http%3A%2F%2Fseostart.co.il%2Fcgi-bin%2Fuser%2Fhome.pl;notify_url=http%3A%2F%2Fseostart.co.il%2Fcgi-bin%2Fpaypal%2Fpaypal-notify.pl;custom=user%3D1&invoice=23 I receive message: You have requested an outdated version of PayPal. This error often results from the use of bookmarks. What is the error?

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• PayPal: IPN vs PDT

  - by Tom

  Hi, I'm having some trouble choosing between PayPal's Instant Payment Notification (IPN) and Payment Data Transfer (PDT). Basically, users buy a one-off product on my site, pay on PayPal, and return to my site. I understand how IPN works but I'm now seeing that I might be able to trigger the various actions that take place after a successful purchase more easily with PDT, as the data gets returned there and then (as opposed to needing a separate listener). However, PayPal's PDT documentation contains this cryptic line: "PDT is not meant to be used with credit card or Express Checkout transactions." ... but I can't find anything further whatsoever on the topic. (1) Are credit cards REALLY not meant to be used with PDT? I would like more than a sentence. (2) Does that mean that a user must have/create a PayPal account to pay? (3) Does it mean that if I want to allow users to pay with their PayPal accounts AND/OR with credit cards directly, I must implement IPN? Could anyone who's gone through this kindly shed some light? Thank you.

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• PayPal integration with magento

  - by Alloi

  Hi, I am new to paypal and magento. I have a buiness account created on paypal and have a magento installation Now I need to integrate the paypal account on to this magento. How do i do this exactly. I tried to go through tutorials but no soap. Can some kindly help me out here with the process. Thanks in advance Alloi

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• Magento - Paypal Express 404 Error

  - by a1anm

  I have added paypal pro (uk) express to my Magento shopping cart. The paypal button now appears below the checkout button in the shopping cart. The problem is when I click the paypal button I get a 404 error. Any ideas?

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• PayPal return URL

  - by Sam

  Here's the code for my Paypal button: <form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post"> <input type="hidden" name="cmd" value="_xclick"> <input type="hidden" name="business" value="[email protected]"> <input type="hidden" name="lc" value="GB"> <input type="hidden" name="button_subtype" value="products"> <input type="hidden" name="no_note" value="1"> <input type="hidden" name="no_shipping" value="1"> <input type="hidden" name="rm" value="0"> <input type="hidden" name="return" value="http://www.example.com"> <input type="hidden" name="item_name" value="My Item"> <input type="hidden" name="amount" value="25.00"> <input type="hidden" name="currency_code" value="GBP"> <input type="hidden" name="bn" value="PP-BuyNowBF:proceed_btn.gif:NonHosted"> <input type="hidden" name="item_number" value="4BD9569402CDE"> <input type="image" src="http://www.example.com/image.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online."> <img alt="" border="0" src="https://www.paypal.com/en_GB/i/scr/pixel.gif" width="1" height="1"> </form> Is it possible to add the item_number to the return URL? For example, after completing the payment within PayPal the user gets sent back to http://www.example.com?item_number=4BD9569402CDE

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• Guidance related to Paypal Integration Using Codeigniter

  - by anum

  I need some guidance related to Paypal Integration. Its not similar to regular cart. After checkout, the site offers a form for payment option, either its paypal or some other payment process. The form directs to controller after submit. A array exists which contains all items value, from here on how can I proceed to paypal site. How can I do this?

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• ASP.NET MVC: Complete action before posting to Paypal

  - by ajbeaven

  I'm in the middle of developing an e-commerce site that is using Paypal as it's payment gateway. All I want to do is run some code before the user heads off to Paypal, but I have no idea how to do it. Eg: [AcceptVerbs(HttpVerbs.Post)] public ActionResult GoToPaypal(FormCollection collection) { //do what I want to do //go to paypal } Can you do this? Example HTML and C# would be lovely :)

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• iPhone Application And PayPal

  - by SK

  I want to integrate PayPal payment facility into my native iPhone application without using web interface so user does not have to leave from the current application. How can it be possible ? Should I use SOAP XML request/response mechanism? I come through following link http://www.slideshare.net/paypalx/learn-how-to-use-paypal-api-to-monetize-your-mobile-app. It contains In application Mobile Checkout via Mobile Web slide that represents the sample UI to access PayPal but how can I implement the same thing? Is it legal to use PayPal to deliver virtiual goods/Application Functionality or Apple can reject this ? Thanks.

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• ASP.NET MVC: Triggering an action before posting to Paypal payment gateway

  - by ajbeaven

  I'm in the middle of developing an e-commerce site that is using Paypal as it's payment gateway. All I want to do is run some code before the user heads off to Paypal to pay for their order, but I have no idea how to do it. The user should click a submit button, changes are made (in this case, the status of the order), and then the user is redirected to the payment gateway. Eg: [AcceptVerbs(HttpVerbs.Post)] public ActionResult GoToPaypal(FormCollection collection) { //change order status //send user to paypal where they pay for their order } So my question is how do you do application stuff and then redirect to paypal's payment gateway? Example HTML and C# would be lovely :)

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• Building a complete online payment gateway like Paypal

  - by John Stewart

  So this question isn't about integrating an existing payment gateway into my site. This is more of a architectural question. I want to build a system similar to Paypal. Now I understand that Paypal offers a lot of features under the roof and I can't implement all of them at once. I want to implement the core functionality of Paypal and other such services. So my question is (rather discussion is) around how would one go about building such a system. Some points to discuss: Handle payments through existing banks. I am guessing that I would need access to local bank protocols to get this. Allow users to securely store and process their payments How does Paypal handle the transactions? Thoughts?

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• Paypal Encrypted Website payments

  - by John Isaacks

  I am trying to integrate a PayPal Website Payments Standard Cart Upload payment type into my shopping cart. I integrated Google Checkout a while back and I did not find it overly confusing as I do paypal. I am getting info on how to encrypt it from here: https://cms.paypal.com/us/cgi-bin/?&cmd=_render-content&content_ID=developer/e_howto_html_encryptedwebpayments#id08A3I0P017Q Paypal says I need to generate a private key and a public certificate using OpenSSL. I went to OpenSSL and downloaded the latest release, which is just a folder containing various files but I see no application I can use, not sure what to do here. Even if I were to get OpenSSL to generate me a private key and public cert, the next step is to download either an MS or Java command line tool to create the encrypted cart ahead of time with the cart-total, tax, etc. which sounds crazy to me, like I am supposed to manually do this prior to every order?? Obviously I do not know the items in the cart the customer is going to buy before hand so I need this to be done on the fly on my website using PHP. But I am completely lost. There has to be a way to setup dynamic secure cart uploads to paypal. Can someone please point me in the right direction?

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• How to deny payment via PayPal IPN?

  - by Nick

  Hello all, I need to create dynamic 'Pay Now' buttons on my site, and PayPal says the way to do this is via an HTML FORM with preset variables for the price, currency, and item of the purchase. I use PayPal IPN to notify me when a payment has complete. However, what's to stop someone from modifying the query parameters of the Pay Now button to change the price? Some people have told me to redirect the button through a PHP file that sends you to a PayPal payment page with the parameters in place, but the price could just as easily be manipulated in the Web browser's address bar. My question is, how can I deny a payment if the information I receive from PayPal's IPN service is invalid (if the price doesn't match our records)? I'm quite confused and couldn't find any documentation on what I'm looking for. Hopefully, you guys can help. Thanks!

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• how to insert a verify code HTML Standard Paypal

  - by user304828

  i have a product , product infor was save in table , and have a field verify_code, i will create a string by md5 and insert to this field, and i want send this verify_code to paypal then i can check response return from paypal if verify_code == response verify_code will do next action how i can do it with html standard paypal?

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• PAYPAL IPN Response Problem

  - by Gorkem Tolan

  I am having a problem with Paypal IPN response. After payment is made by the customer, paypal ipn returns this url www.mywebsite.com?orderid=32&tx=2AC67201DL3533325&st=Pending&amt=2.50&cc=USD&cm=&item_number=32 There are a couple of issues 1- Postback field names are undefined or missing. Thus I can get the INVALID message. I am not sure if my website does not read POST variables. When I looked at IPN history, it shows that each IPN has been sent with the complete url. 2- Payment status keeps coming Pending. Does this issue cause the first issue? Thank you for your responses in advance. Here is the code: Dim strSandbox As String, strLive As String Dim req As HttpWebRequest strSandbox = "http://www.sandbox.paypal.com/cgi-bin/webscr/" strLive = "https://www.paypal.com/cgi-bin/webscr" req = CType(WebRequest.Create(strSandbox), HttpWebRequest) 'Set values for the request back req.Method = "POST" req.ContentType = "application/x-www-form-urlencoded" Dim param() As Byte param = Request.BinaryRead(HttpContext.Current.Request.ContentLength) Dim strRequest As String strRequest = Encoding.ASCII.GetString(param) strRequest = strRequest & "&cmd=_notify-validate" req.ContentLength = strRequest.Length 'Response.Write(strRequest) 'Send the request to PayPal and get the response Dim streamOut As StreamWriter streamOut = New StreamWriter(req.GetRequestStream(), System.Text.Encoding.ASCII) streamOut.Write(strRequest) streamOut.Close() Dim streamIn As StreamReader streamIn = New StreamReader(req.GetResponse().GetResponseStream()) Dim strResponse As String strResponse = streamIn.ReadToEnd() Response.Write(strResponse) streamIn.Close() If (strResponse = "VERIFIED") Then Response.Redirect("thankyou.aspx") ElseIf (strResponse = "INVALID") Then End If

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