Rescue Me!Make your escape with Twilio

Robert Horvick

@bubbafat

Custom .NET Development and Training

How to get out of meetings

Escape

Freedom!

How wouldwe do that?

SMS

MMS

Voice

Enough TalkLet’s build something

public class EchoController : TwilioController{    [HttpPost]    public ActionResult Index(SmsRequest message)    {        TwilioResponse response = new TwilioResponse();        response.Message(message.Body);        return TwiML(response);    }} 

public class EchoController : TwilioController{    [HttpPost]    public ActionResult Index(SmsRequest message)    {        TwilioResponse response = new TwilioResponse();        response.Message(message.Body);        return TwiML(response);    }} 

public class EchoController : TwilioController{    [HttpPost]    public ActionResult Index(SmsRequest message)    {        TwilioResponse response = new TwilioResponse();        response.Message(message.Body);        return TwiML(response);    }} 

public class EchoController : TwilioController{    [HttpPost]    public ActionResult Index(SmsRequest message)    {        TwilioResponse response = new TwilioResponse();        response.Message(message.Body);        return TwiML(response);    }} 

public class EchoController : TwilioController{    [HttpPost]    public ActionResult Index(SmsRequest message)    {        TwilioResponse response = new TwilioResponse();        response.Message(message.Body);        return TwiML(response);    }} 

public class EchoController : TwilioController{    [HttpPost]    public ActionResult Index(SmsRequest message)    {        TwilioResponse response = new TwilioResponse();        response.Message(message.Body);        return TwiML(response);    }} 

TwiML?

<?xml version="1.0" encoding="utf-8"?><Response> <Message>The SMS Message!</Message></Response>

MVC

SMS POST

TwiMLSMS

MVC

SMS POST

TwiMLSMS

Try It!

Security?

Things We Know…

URL Path and Query String

POST Parameters

HTTP Headers

Things We Hope…

The request is from Twilio

X-Twilio-Signature

X-Twilio-Signature

URL Path and Query String

POST Parameters

HMAC-SHA1 (Auth Token)

Shhhh…Your authentication token is a secret.

ValidateRequestTwilio Authentication: The Easy Way

Why are we building APIs using MVC?

Web API

Nope!• MVC Only

• Derives from Controller

• ValidateRequest uses MVC Filters

Twilio.WebApi• Nuget Package

• Derives from ApiController

• ValidateRequest works

• MVC Code-Compatible

Web APIIt’s easier, right?

Sending MessagesIt’s even easier

Rescue Me!

Web Role

Web Role

Azure Service Bus Queue

Worker Role

Web Role

Azure Service Bus Queue

Worker Role

Rescue Me!Web, Worker and Stuff

919-261-3536