[SOLVED] ISAPI webbroker requestcontentfields is empty (length = 0)

ISAPI webbroker requestcontentfields is empty (length = 0)

I created a WebBroker application using the Wizard. I changed the default action's code so it looks like this:

procedure TWebModule1.WebModule1DefaultHandlerAction(Sender: TObject;
  Request: TWebRequest; Response: TWebResponse; var Handled: Boolean);
var
  i: Integer;
begin
  i := Request.ContentLength;
  Response.Content :=
    '<html>' +
    '<head><title>DataSnap Server</title></head>' +
    '<body>DataSnap Server x' +
    Request.ContentFields.Text + 'x' + IntToStr(i) + 'x' +
    '</body>' +
    '</html>';
end;

I deployed the dll under IIS (6.2 - Server 2012) and tested the dll using a webbrowser.

http://localhost/MapServer/Mapserver.dll/?param1=hello

Just for good measure I tried

http://localhost/MapServer/Mapserver.dll/?param1="hello"

The browser outputs

DataSnap Server xx0x

in both cases.

It appears the Request.ContentFields is not being populated by the call from the browser.

Is this issue specific to a particular version of Delphi and/or IIS? What am I not understanding?

I have tried both Seattle and Berlin, the result is the same. Thanks

P.S. I also used the wizard to make a stand-alone WebBroker. It doesn't have this problem.

Solution

After some really deep Google searching, I found the answer: (Note that while the Embarcadero documentation states that Request.ContentFields contains the contents of fields "when the MethodType is mtPost", the practically useless documentation for Request.QueryFields says nothing about mtGet)

procedure TWebModule1.WebModule1DefaultHandlerAction(Sender: TObject;
  Request: TWebRequest; Response: TWebResponse; var Handled: Boolean);
var
  i: Integer;
begin
  i := Length(Request.QueryFields.Text);
  Response.Content :=
    '<html>' +
    '<head><title>DataSnap Server</title></head>' +
    '<body>DataSnap Server x' +
    Request.QueryFields.Text + 'x' + IntToStr(i) + 'x' +
    '</body>' +
    '</html>';
end;