Configure AWS Signature Authentication for REST

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Demonstrates Rest.SetAuthAws, which associates an AuthAws provider so Chilkat signs each request using AWS Signature Version 4. The provider supplies the access key, secret key, region, and service name.

var
success: Boolean;
rest: HCkRest;
bTls: Boolean;
bAutoReconnect: Boolean;
authAws: HCkAuthAws;
responseText: PWideChar;

begin
success := False;

rest := CkRest_Create();
bTls := True;
bAutoReconnect := True;
success := CkRest_Connect(rest,'example.com',443,bTls,bAutoReconnect);
if (success = False) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

//  Configure AWS Signature Version 4 request signing.  Provide the access key, secret key, region,
//  and service name.
authAws := CkAuthAws_Create();
//  Normally you would not hard-code secrets in source.  You should instead obtain them from an
//  interactive prompt, environment variable, or a secrets vault.
CkAuthAws_putAccessKey(authAws,'AWS_ACCESS_KEY');
CkAuthAws_putSecretKey(authAws,'AWS_SECRET_KEY');
CkAuthAws_putRegion(authAws,'us-east-1');
CkAuthAws_putServiceName(authAws,'s3');

//  Associate the provider so Chilkat signs each request according to AWS requirements.
success := CkRest_SetAuthAws(rest,authAws);
if (success = False) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

responseText := CkRest__fullRequestNoBody(rest,'GET','/');
if (CkRest_getLastMethodSuccess(rest) = False) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;
Memo1.Lines.Add(responseText);

CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);