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Call soap web service asynchronously in Delphi XE

Posted on 2013-10-28
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Last Modified: 2016-02-26
I'm using Delphi XE to import a WSDL. This produces a .pas file as expected, and I can use the method exposed in the web service synchronously.

How do I do this asynchronously?
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Question by:lefodnes
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Sinisa Vuk earned 2000 total points
ID: 39606229
You probably want time out on soap request? I'm trying to use timeouts but without success. So, I suggest to use separate thread (where you create soap request and wait for response). Thread can be destroyed or ignored and your main thread is not locked - just like asynchronous call. Thread can call some event to inform when result is available.

I recommend to use TBMDThread. Get it from www.torry.net
OmniThreadLibrary is little complex but good alternative too. Using one of them you can easily set you soap call as a working job.

job:
...
FRIO := THTTPRIO.Create(nil);
try
  //call soap method and get result
  if Assigned(FMyEvent) then FMyEvent(Res); //notify main  thread
finally
  FRIO.Free;
end;

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Author Closing Comment

by:lefodnes
ID: 39640961
Using thread as I expected. Doesn't seems like Delphi XE support asynchronous web method calling, so it's probably the only way besides writing the http requests from bottom up.
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