(Delphi DLL) Twilio Send SMS (using Chilkat HTTP)

Send an outgoing SMS message.

For more information, see https://www.twilio.com/docs/sms/api/message-resource#create-a-message-resource

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, HttpRequest, HttpResponse, StringBuilder, JsonObject;

...

procedure TForm1.Button1Click(Sender: TObject);
var
http: HCkHttp;
success: Boolean;
req: HCkHttpRequest;
resp: HCkHttpResponse;
sbResponseBody: HCkStringBuilder;
jResp: HCkJsonObject;
respStatusCode: Integer;
account_sid: PWideChar;
api_version: PWideChar;
body: PWideChar;
date_created: PWideChar;
date_sent: PWideChar;
date_updated: PWideChar;
direction: PWideChar;
error_code: PWideChar;
error_message: PWideChar;
from: PWideChar;
messaging_service_sid: PWideChar;
num_media: PWideChar;
num_segments: PWideChar;
price: PWideChar;
price_unit: PWideChar;
sid: PWideChar;
status: PWideChar;
subresource_urisMedia: PWideChar;
v_to: PWideChar;
uri: PWideChar;

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

http := CkHttp_Create();

// Implements the following CURL command:

// (See information about using test credentials and phone numbers:  https://www.twilio.com/docs/iam/test-credentials)

// curl -X POST https://api.twilio.com/2010-04-01/Accounts/TWILIO_ACCOUNT_SID/Messages.json \
// --data-urlencode "From=+15005550006" \
// --data-urlencode "Body=body" \
// --data-urlencode "To=+15005551212" \
// -u TWILIO_ACCOUNT_SID:TWILIO_AUTH_TOKEN

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

CkHttp_putLogin(http,'TWILIO_ACCOUNT_SID');
CkHttp_putPassword(http,'TWILIO_AUTH_TOKEN');

req := CkHttpRequest_Create();
CkHttpRequest_putHttpVerb(req,'POST');
CkHttpRequest_putPath(req,'/2010-04-01/Accounts/TWILIO_ACCOUNT_SID/Messages.json');
CkHttpRequest_putContentType(req,'application/x-www-form-urlencoded');
CkHttpRequest_AddParam(req,'From','+15005550006');
CkHttpRequest_AddParam(req,'Body','body');
CkHttpRequest_AddParam(req,'To','+15005551212');

resp := CkHttp_PostUrlEncoded(http,'https://api.twilio.com/2010-04-01/Accounts/TWILIO_ACCOUNT_SID/Messages.json',req);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

sbResponseBody := CkStringBuilder_Create();
CkHttpResponse_GetBodySb(resp,sbResponseBody);
jResp := CkJsonObject_Create();
CkJsonObject_LoadSb(jResp,sbResponseBody);
CkJsonObject_putEmitCompact(jResp,False);

Memo1.Lines.Add('Response Body:');
Memo1.Lines.Add(CkJsonObject__emit(jResp));

// A 201 status code indicates success.
respStatusCode := CkHttpResponse_getStatusCode(resp);
Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkHttpResponse__header(resp));
    Memo1.Lines.Add('Failed.');
    CkHttpResponse_Dispose(resp);
    Exit;
  end;
CkHttpResponse_Dispose(resp);

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "account_sid": "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
//   "api_version": "2010-04-01",
//   "body": "body",
//   "date_created": "Thu, 30 Jul 2015 20:12:31 +0000",
//   "date_sent": "Thu, 30 Jul 2015 20:12:33 +0000",
//   "date_updated": "Thu, 30 Jul 2015 20:12:33 +0000",
//   "direction": "outbound-api",
//   "error_code": null,
//   "error_message": null,
//   "from": "+15017122661",
//   "messaging_service_sid": "MGXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
//   "num_media": "0",
//   "num_segments": "1",
//   "price": null,
//   "price_unit": null,
//   "sid": "MMXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
//   "status": "sent",
//   "subresource_uris": {
//     "media": "/2010-04-01/Accounts/ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Messages/SMXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Media.json"
//   },
//   "to": "+15558675310",
//   "uri": "/2010-04-01/Accounts/ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Messages/SMXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.json"
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

account_sid := CkJsonObject__stringOf(jResp,'account_sid');
api_version := CkJsonObject__stringOf(jResp,'api_version');
body := CkJsonObject__stringOf(jResp,'body');
date_created := CkJsonObject__stringOf(jResp,'date_created');
date_sent := CkJsonObject__stringOf(jResp,'date_sent');
date_updated := CkJsonObject__stringOf(jResp,'date_updated');
direction := CkJsonObject__stringOf(jResp,'direction');
error_code := CkJsonObject__stringOf(jResp,'error_code');
error_message := CkJsonObject__stringOf(jResp,'error_message');
from := CkJsonObject__stringOf(jResp,'from');
messaging_service_sid := CkJsonObject__stringOf(jResp,'messaging_service_sid');
num_media := CkJsonObject__stringOf(jResp,'num_media');
num_segments := CkJsonObject__stringOf(jResp,'num_segments');
price := CkJsonObject__stringOf(jResp,'price');
price_unit := CkJsonObject__stringOf(jResp,'price_unit');
sid := CkJsonObject__stringOf(jResp,'sid');
status := CkJsonObject__stringOf(jResp,'status');
subresource_urisMedia := CkJsonObject__stringOf(jResp,'subresource_uris.media');
v_to := CkJsonObject__stringOf(jResp,'to');
uri := CkJsonObject__stringOf(jResp,'uri');

CkHttp_Dispose(http);
CkHttpRequest_Dispose(req);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jResp);

end;