Hi guys,
I am pretty new to the mailing list and I already have a question :-) If you are familiar with PayPal instant payment notifications (IPN) you probably know the mechanism: 1. PayPal server sends (http post) a notification to provide by the customer URL. 2. The receiver is obligated to send back received data and provide a secured key in addition. 3. PayPal server validates and confirms whether the data has been really sent by him and whether the data is properly parsed by the receiver. I need to implement the same kind of proof of receive via http and the question is how can I do this using HttpDefaultClient, HttpPost and ResponseHandler ? Is it possible once to open communication channels (read and write) and then reuse them until the communication between both sides completes? Thanks @Simeon
