SAP PI 7.31 - NW BPM Question regarding synchronous scenario

Hi Experts,

I have a scenario in which I have to make a synchronous call to a Web service using a HTTP GET Method.

I should continue to make the call until I get a proper response from it.

I had gone through the discussion mentioned below and I can see that if the response is not received in BPM then it throws an error:

http://scn.sap.com/thread/3336353

I want to know only one thing:

1. Is there a possibility that I can capture the error in case there is no response from the web service? If Yes, how can I do that? I want to know continue to make the web service call until I get a proper message from it.

Any inputs/insights in this regard would be really helpful.

Thanks,

Arkesh