Delphi DLL Requires Chilkat v11.0.0+

HTTP Methods - GET and DELETE

Demonstrate a method for sending HTTP requests that don't have a request body, such as for GET or DELETE requests. Delphi DLL

var
success: Boolean;
http: HCkHttp;
url: PWideChar;
resp: HCkHttpResponse;
statusCode: Integer;

begin
success := False;

//  This example assumes the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

http := CkHttp_Create();

//  Specifiy a session log file so we can see the exact request/response
CkHttp_putSessionLogFilename(http,'c:/aaworkarea/sessionLog.txt');

//  Perhaps add a custom header or two..
CkHttp_SetRequestHeader(http,'x-exz-date','20201012T235046Z');
CkHttp_SetRequestHeader(http,'x-exz-id','1234');

//  Send a GET request to https://www.example.com/someting?param1=123&param2=abc
url := 'https://www.example.com/someting?param1=123&param2=abc';
resp := CkHttpResponse_Create();
success := CkHttp_HttpNoBody(http,'GET',url,resp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

//  The GET request that is sent looks like this.
//  The Accept and Accept-Encoding headers are automatically added by default.

//  	GET /someting?param1=123&param2=abc HTTP/1.1
//  	Host: www.example.com
//  	Accept: */*
//  	Accept-Encoding: gzip
//  	x-exz-date: 20201012T235046Z
//  	x-exz-id: 1234

//  Get the response status
statusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response status: ' + IntToStr(statusCode));

//  Get the response body
Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));

//  -------------------------------------------------------------
//  Let's say we want to send a DELETE request, and we only want to accept an application/json response,
//  and we don't want gzipped responses...

//  First remove the previously specified custom headers.
CkHttp_ClearHeaders(http);

//  Indicate we only accept application/json non-gzipped responses.
CkHttp_putAccept(http,'application/json');
CkHttp_putAllowGzip(http,False);

//  Send a DELETE request to https://www.example.com/deleteSomething
url := 'https://www.example.com/deleteSomething';
success := CkHttp_HttpNoBody(http,'DELETE',url,resp);
if (success = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

//  The DELETE request that is sent looks like this.
//  The empty Accept-Encoding header value means we only want non-compressed responses.

//  	DELETE /deleteSomething HTTP/1.1
//  	Host: www.example.com
//  	Accept: application/json
//  	Accept-Encoding: 

//  Get the response status
statusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response status: ' + IntToStr(statusCode));

//  Get the response body
Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));

CkHttp_Dispose(http);
CkHttpResponse_Dispose(resp);