Sample code for 30+ languages & platforms
Delphi ActiveX Requires Chilkat v11.0.0+

Example: Http.HttpFile method

Shows how to use the HttpFile method to send an HTTP POST request with the contents of a file as the request body. The example sends the following request:
POST /api/v1/sites/123/deploys HTTP/1.1
Host: example.com
Accept: */*
Accept-Encoding: gzip
Content-Type: application/zip
Content-Length: 123456

[binary data bytes of data.zip]

Also see: Chilkat Http Default and Auto-Filled Headers

Chilkat Delphi ActiveX Downloads

Delphi ActiveX
var
success: Integer;
http: TChilkatHttp;
localFilePath: WideString;
url: WideString;
resp: TChilkatHttpResponse;

begin
success := 0;

http := TChilkatHttp.Create(Self);

localFilePath := 'C:/example/zips/data.zip';
url := 'https://example.com/api/v1/sites/123/deploys';

//  Send a POST with the contents of the file in the binary HTTP request body.
resp := TChilkatHttpResponse.Create(Self);
success := http.HttpFile('POST',url,localFilePath,'application/zip',resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

Memo1.Lines.Add('Response Status Code: ' + IntToStr(resp.StatusCode));
Memo1.Lines.Add('Response body:');
Memo1.Lines.Add(resp.BodyStr);