Building a complete online payment gateway like Paypal

Posted by John Stewart on Stack Overflow See other posts from Stack Overflow or by John Stewart
Published on 2010-04-15T17:10:47Z Indexed on 2010/04/15 17:13 UTC
Read the original article Hit count: 278

Filed under:

payment-gateway

|

paypal

|

banking

|

onlinebanking

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?

© Stack Overflow or respective owner

Related posts about payment-gateway

Payment Gateway Script ICICI/CITI BANK/HDFC

as seen on Stack Overflow - Search for 'Stack Overflow'
I am new to PHP payment gateways. Anyone help me to provide some Payment Scripts using ICICI, CITI or HDFC Payment gateways. Thanks Prabu >>> More
How to integrate ccnow payment gateway in asp.net

as seen on Stack Overflow - Search for 'Stack Overflow'
How to integrate ccnow payment gateway in asp.net? where can i get the activation key? >>> More
Payment Gateway Choices

as seen on Article City - Search for 'Article City'
Commissioning a new eCommerce Website is a process that demands answer after answer to questions that before you begin you may not be prepared for. One of the most fundamental choices that you must m... [Author: Diane Forster - Web Design and Development - March 29, 2010] >>> More
Buyers' Guide: Choosing a Payment Gateway Provider

as seen on Internet.com - Search for 'Internet.com'
From chargeback fees to PCI-compliance issues, this ecommerce buyers' guide will tell you everything you need to know to select a payment gateway service provider. >>> More
Payment Gateway Integration asp.net c# 2.0

as seen on Stack Overflow - Search for 'Stack Overflow'
Myself mendy, i am designing web application, The business required to integrate payment gateway. I searched on site regarding the flow but i could not get much info on MSDN. I want to make payment gateway using SSL and 3rd party merchant account. How can i do it ? some info regarding payment gateway… >>> More

Related posts about paypal

paypal api - send money to any paypal account

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, is it possible to send money using paypal API to any paypal account (not just to API credentials owner). I know that it's possible to do that using IPN, but I need to use SOAP. many thanks >>> More
paypal sandbox to original paypal

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi I used paypal sandbox to test my code and my ipn is working. but Now i need to go to original paypal account. My confusion is in sandbox we make buyers and sellers account. and we get [email protected] like seller account. is it needed in original account? if needed how to make it… >>> More
PayPal Cannot send value to paypal

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi PayPal IPN sends a notification to your script directly. Since the notification is coming from PayPal - NOT the customer that placed the order - My Login session doesn't exits this context .Therefore,all my login data doesn't exist in the session.I need my login session values to update my DB… >>> More
Paypal (sandbox) buy now link redirects to paypal (sandbox) login page instead of order summary

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, Before going live I try to test the paypal process against the paypal sandbox mode, but after the summary of what the user is going to pay on my website(buy now button), the link does not redirect to a paypal summary of the prder but ask the user to connect to paypal. Even after logging into the… >>> More
Preserving case in HTTP headers with Ruby's Net:HTTP

as seen on Stack Overflow - Search for 'Stack Overflow'
Although the HTTP spec says that headers are case insensitive; Paypal, with their new adaptive payments API require their headers to be case-sensitive. Using the paypal adaptive payments extension for ActiveMerchant (http://github.com/lamp/paypal_adaptive_gateway) it seems that although the headers… >>> More