CORS/AJAX with  fpHTTPap Lazarus
lazarus / 38-Networking and Web Programming

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automacaosamos · 2021-11-22 15:27

Could you help me with an example of an API using:
fphttpapp, httpdefs, httproute, fpjson

that implements CORS to receive AJAX requests ??

thanks

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Leledumbo · 2021-12-07 04:49

fpjson not required. CORS is implemented as a HTTP OPTIONS handler, so
practically just:
Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i procedure
Whatever(ARequest: TRequest; AResponse: TResponse);var  Origin:
String;begin  if ARequest.Method = 'OPTIONS' then begin // handle CORS
request    // normally, you would check the sent ORIGIN header, to see
who sent the request    Origin :=
HttpRequest.GetCustomHeader('Origin');    // for instance, you only
allow it from your own domain    if Origin = 'myowndomain.com' then
begin      // send the header that allows it to request     
AResponse.SetCustomHeader('Access-Control-Allow-Origin', Origin); //
or if you allow it from anywhere, use '*' instead of Origin    end; 
end;end; begin   HTTPRouter.RegisterRoute('/', @Whatever);end.