Hi,
I am working on the integration of a Wt application (running on an IIS
server under Windows) with a third party local payment system. This
payment system uses two CGI modules to first start and then return
payment transaction results. In a nutshell it works as follows:
- you have to call the first CGI module (start_transaction.cgi) from a
dynamic Web page using an HTTP POST method with some parameters that you
would normally get from the user (transaction amount, user account id
and stuff like that)
- the local payment system validates and processes the request and then
a second CGI module (end_transaction.cgi), informs back transaction
results. To do that, this second CGI module expects a dynamic Web page
(.ASP, .PHP or other similar) that is invoked by the end_transaction.cgi
module and where you can access transaction payment results and complete
the transaction with the corresponding answer acknowledge
I am planning to use Wt:Http::Cient and Wt::Http::Message classes to
implement this application protocol and I would like to validate some of
my assumptions:
- to activate the first CGI module, I am planning to use the
Wt::Http::Client post(url, message) function, where url is the web
address of start_transaction.cgi and message is a Wt::Http::Message
object with all the requested parameters loaded as "headers" (name,
value pairs).
- to process the results, I am planning to build a little ASP script
(the one that will be used by end_transaction.cgi) that would recover
all the information from the answer and would send it back to the Wt
application using an HTTP POST method
Does it make sense to you? As far as I understand the Wt::Http::Client
post is an asynchronous method so I am a little bit confused about how
to be sure if the first CGI module actually runs and what Http::Client
method do I have to use to get the answer from the ASP script processing
the second CGI module response. Is it possible, as an alternative answer
processing method, to inform the Wt running application as the dynamic
Web page expected by end_transaction.cgi? If this is feasible, what
object and method do you have to use to wait for this answer?
I would appreciate your comments.
Thanks. Regards.
________________________
Mario Diethelm Guallar
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