SMS and Voice Integration With Twilio - Google App Engine — Google Developers

Python We will be using the standard Google App Engine Python Runtime Environment to construct this example. If this is your first time writing Python for Google App Engine, we recommend that you use the Getting Started guide for Python. Follow the tutorial until you have completed the "Hello, World!" guide. After you have a working "Hello, World!" application, you will need to add Twilio's Python library to your application. Do this by doing the following: cd to the directory where your application is stored, this will be the helloworld directory you created if you followed the Getting Started guide. Install virtualenv:$ sudo easy_install pip$ sudo pip install virtualenv Set up a virtual python environment:$ virtualenv --distribute venv Activate virtualenv:$ source venv/bin/activate Use pip to install Twilio's Python library and dependencies:$ pip install twilio Deactivate your virtual environment:$ deactivate Link the Twilio library and its dependencies into your project:$ ln -s venv/lib/python2.7/site-packages/twilio .$ ln -s venv/lib/python2.7/site-packages/httplib2 .$ ln -s venv/lib/python2.7/site-packages/six.py . You have now installed the Twilio library into your Google App Engine project. Java The first thing you will need is a Google App Engine development environment. For Java, the two primary options are using Google's Eclipse plugin, or building via Ant scripts. For the purposes of this tutorial, we will assume you are developing with Eclipse, but in broad strokes the step would be the same for Ant/other environments. Create a new App Engine Java project using either of these methods. If you'd like, it's possible to consume the Twilio REST API directly using App Engine's URL Fetch service, without any setup or external SDKs. If you would rather not add any dependencies to your project and want to use HTTP APIs directly, you can simply refer to the REST API documentation for available endpoints, secured with HTTP Basic Authentication. However, it will probably be easier to use Twilio's helper library (bundled with all dependent Java libraries), which provides a simple object-oriented interface to Twilio's REST API. To use the Twilio helper library in your GAE Java project, you will first need to copy it into your Eclipse project to the war/WEB-INF/lib directory. Once the JAR file has been copied into your project, you will need to put it on your project's build path to get code completion in Eclipse, and remove any compile errors in the IDE. To add a JAR file to your project's build path, right-click on your project folder, and select "Build Path -> Configure Build Path...". On that screen, click the "Add JARs" button, and navigate your project folder to select the jar you already copied into your project. You are now ready to use the Twilio REST API! For more information, see the Javadocs for the Twilio helper library, and this example of sending a text message from a Twilio number in a Java Servlet.

Python Let's walk through creating your first application, titled "Hello Monkey." After completing the instructions in Setting Up, modify helloworld.py to look like this. After updating helloworld.py, follow these directions to deploy your project to App Engine. After you've deployed your project to App Engine you will be able to send a POST request to http://<your app>.appspot.com/twiml, which will return the following text:<?xml version="1.0" encoding="UTF-8"?><Response><Say>Hello Monkey!</Say></Response> Next, copy and paste the http://<your app>.appspot.com/twiml URL into the "Voice" URL box on the Numbers page of your Twilio Account. Now call your Twilio number! You should hear a voice say "Hello Monkey!" in response. When you call, Twilio will fetch your URL, and execute the XML instructions listed above. Then, Twilio will hang up, because there are no more instructions. Java Twilio can send an HTTP request to our App Engine application whenever a call or text message is received. Use this example of how to set up a Java Servlet to respond to incoming voice calls with the message "Hello Monkey!" In order to expose this servlet in our web application, we will need to use this code to add the appropriate mapping in our deployment descriptor (web.xml). Once our servlet is configured, we will need to deploy our application to App Engine. You will then be able to send a POST request to http://<your app>.appspot.com/twiml, which should return the following text:<?xml version="1.0" encoding="UTF-8"?><Response><Say>Hello Monkey!</Say></Response> Copy and paste the URL of your servlet into the "Voice" URL on the Numbers page of your Twilio Account. Now call your Twilio number! You should hear a voice say "Hello Monkey!" in response. When you call, Twilio will fetch your URL, and execute the XML instructions listed above. Then, Twilio will hang up, because there are no more instructions.

Python The twilio-python helper library makes it easy to send an outgoing SMS using Twilio. To do this, modify helloworld.py thusly, filling in your "Account SID" and "Auth Token" which are found here: https://www.twilio.com/user/account You will also need to change the from_ and to parameters to use real phone numbers. The from_ number must be a valid Twilio phone number in your account. For this example, use the phone number you called in the example above. The to number can be any outgoing number, your cell phone for example. After deploying the updated code, send the SMS by putting this URL into a web browser: http://<your app>.appspot.com/send_sms Java Sending an outbound text message via our helper library is done using Java classes included in the JAR file. In this example file that uses the helper library, you'll see a simple servlet application, configured to send an SMS text message. Note that you’ll need to fill in your ACCOUNT_SID and AUTH_TOKEN, which are found at https://www.twilio.com/user/account. You will also need to configure the HashMap to contain valid parameters for the REST request. The from and to parameters must use real phone numbers. The from number must be a valid Twilio phone number in your account. The to number can be any outgoing number, your cell phone for example.