How To get Synchronous response over a long duration

Hi
I have scenarion where i have to invoke an interface in XI from a web dynpro application. Invocation can be imlemented by invoking the web service exposed from XI but after the invocation the duration for which the service will execute is not known.. it depends on the volume of data. In some case the duration might be 15 secs while in other cases it might also be be 5 min or greater than that.
My question is will the web dynpro application still keep on waiting for the response for say 6-7 min thus enabling a synchronous call or as i feel it will time out before the response comes in.
If it will time out is there any other mechanism by which it can keep listening for the response and as soon as it is avaliable it dynamically shows the success message on the screen without using any other event(eg without having to click a button which would again go and fetch the response).
Please suggest an optimal approach that can be followed.
regards
Nilesh

Answered on my own:
Just have to use
x_result = http_client->response->get_data( ).
instead of
x_result = http_client->response->to_xstring( ).
Just don't knwo why the filesize is wrong also - but I can work with this image!

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Message was edited by:
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How To get Synchronous response over a long duration

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