How to send a HTTP POST Request in Delphi using WinInet api

Question

I am trying to make HTTP Requests from Delphi using the WinInet functions.

So far I have:

function request:string;
var
  hNet,hURL,hRequest: HINTERNE         


        

Answer 1

Personally I prefer to use the synapse library for all of my TCP/IP work. For example, a simple HTTP post can be coded as:

uses
  httpsend;

function testpost;
begin
  stm := tStringstream.create('param=value');
  try
    HttpPostBinary('http://example.com',Stm);
  finally
    stm.free;
  end;
end;

The library is well written and very easy to modify to suit your specific requirements. The latest subversion release works without any problems for both Delphi 2009 and Delphi 2010. This framework is not component based, but rather is a series of classes and procedures which well in a multi-threaded environment.