Download, pause and resume an download using Indy components

Posted by Salvador on Stack Overflow See other posts from Stack Overflow or by Salvador
Published on 2010-06-03T04:00:37Z Indexed on 2010/06/03 4:04 UTC
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Actually i'm using the TIdHTTP component for download a file from internet. i'm wondering if is possible pause and resume the download using this component o maybe another indy component.

this is my current code, this works ok for download a file (without resume), but . now i want pause the download close my app ,and when my app restart then resume the download from the last position saved.

var
  Http: TIdHTTP;
  MS  : TMemoryStream;
begin
  Result:= True;
  Http  := TIdHTTP.Create(nil);
  MS    := TMemoryStream.Create;
  try

    try
      Http.OnWork:= HttpWork;//this event give me the actual progress of the download process
      Http.Head(Url);
      FSize := Http.Response.ContentLength;
      AddLog('Downloading File '+GetURLFilename(Url)+' - '+FormatFloat('#,',FSize)+' Bytes');
      Http.Get(Url, MS);
      MS.SaveToFile(LocalFile);
    except
      on E : Exception do
      Begin
       Result:=False;
       AddLog(E.Message);
      end;
    end;
  finally
    Http.Free;
    MS.Free;
  end;
end;

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