Build for voice with the Alexa Skills Kit (ASK), a collection of self-service APIs and tools for making Alexa skills. Skills are like apps for Alexa, enabling customers to engage with your content or services naturally with voice. Bespoken Virtual Device Test Scripts is a tool that helps voice developers and non-developers create in-depth functional tests for Alexa skills, increasing engagement and improving skill quality. The ASK CLI is a great companion for testing your skills. It contains a variety of commands that we can execute on a command line that can do all sorts of things, like create and deploy a skill, validate it, and interact with and Alexa API endpoints. For the purposes of this tutorial, we are going to focus on the ask dialog command.
Developing apps for Amazon Echo, called Alexa skills, is different than developing for other devices such as Android or iOS smartphones. Alexa skills are not installed on the actual device. Instead, they are web services hosted in the cloud. When a user wakes an Echo device and makes a request, that request is sent to the Alexa service in the cloud. If the request was intended for your app, the Alexa service sends a request to your app, waits for the response, and delivers the response to the user. You can develop the web service for your Alexa skills using any programming language as long as you respect the Alexa REST interface which uses JSON payloads over HTTPS.
That being said, there are toolkits for various languages and web service frameworks that make it easier to develop your app so you don't have to write the boilerplate code that parses request objects, verifies the authenticity of the requests and serializes the response. Because Amazon is primarily a Linux + Java shop their documentation prioritizes how to develop using that platform. So we wrote this guide for .NET developers and open sourced AlexaSkillsKit.NET to be your toolkit for .NET. Angels and demons free.
The Alexa service is strict regarding app endpoints. It will only call out using HTTPS on port 443 whether it's calling an app during development or deployed to production. This means you need to set up your development machine to accept incoming requests on port 443 which is not typical for a dev environment. Setup is further complicated because, as of this writing, the Alexa HTTPS client that makes the outbound calls to your app does not support SNI. So your app needs to be the HTTPS endpoint bound to the hosts' IP address (which effectively excludes a number of cloud hosting options for your app).
Irrespective of which web server you use on your dev machine (IIS, IIS Express, etc.) incoming HTTPS traffic on Windows is received by HTTP.SYS, a kernel-mode driver and a core part of the OS, which passes the request to the web server. To configure HTTP.SYS to accept requests on 443, from an elevated command prompt, run
you also need to tell windows firewall to allow incoming traffic on port 443
In addition to receving HTTPS traffic you have to configure your development endpoint with an SSL certificate. Since Alexa service will validate this SSL certificate you either have to get one from an approved CA or generate your own and register the public key in the Amazon Developer Console. The command to generate your own cert is
Whether you purchased a certificate from a CA or generated your own, you need to tell HTTP.SYS which SSL certificate you want to use for your development endpoint so, from an elevated command prompt, run:
To get the [certificate hash] you need to find the certificate in the Certificate Manager. Run MMC.exe, go to File | Add/Remove Snap In, then select Certificates. Pick the Computer Account and look under Personal Certificates. Double click on your certificate (you can differentiate by expiration date if you see multiple). Go to Details, and scroll down to Thumbprint. Copy and paste into Notepad so you can remove the inner spaces before pasting it on the command line. If you haven't worked with SSL certificates before this article is a good primer.
If you go the route of generating your own cert Amazon requires that you submit its public key in the Amazon Developer Console where you register your Alexa app, so Alexa service can validate it. Alexa needs the public key in a Base 64 format called PEM in Linux and MacOS but which Windows refers to as Base 64 encoded CER format. To get your cert in this format Run MMC.exe, go to File | Add/Remove Snap In, then select Certificates. Pick the Computer Account and look under Personal Certificates. Geforce app for mac. Right click your certificate and choose Export. In the Export wizard choose 'No, do not export the private key' and then 'Base 64 encoded X.509 (.CER)'.
Take the content of the resulting file and paste it in the Amazon Developer Console under your app's registration, including the BEGIN/END CERTIFICATE markers
When you're done with developing your Alexa app you can undo all this with: Can you screenshot on a mac.
It's outside the scope of this guide, but you have to get HTTPS inbound traffic from the edge of your network to your dev machine. If you're working in a small office or at home this means configuring your broadband modem to send traffic coming in on 443 to your dev machine. If you're in larger office with formal corporate network you have to work with your network admin to set up your dev machine as host in the DMZ and it that's forbidden by policy you have to do development on a rented VM in the cloud.
You can use any number of web service frameworks to write your app, like ASP.NET Web API or ServiceStack. Mac pro 4 1 high sierra. Irrespective of framework, the AlexaAppKit.NET toolkit makes it easy to write your app because it
Here are the high level steps:
1. Implement ISpeechletAsync or ISpeechlet in a class that represents your app
https://cueteasimpglas1970.mystrikingly.com/blog/button-on-the-side-of-macbook-pro. (I recommend ISpeechletAsync if your app does makes requests to other cloud services) Exactscan pro 19 1 – powerful fast document scanning software.
2. Route requests from the web server hosting environment to your class
Google chrome 75 download mac. For example, if you're using ASP.NET Web API you write a small wrapper API method:
3. Develop, Test, Debug; Lather, Rinse, Repeat
If you need to see the raw request and response you can attach a debugger because AlexAppKit.NET will output the headers and body to the debugger output. DO NOT use Fiddler as a reverse proxy to inspect traffic from Alexa. Not because Fiddler isn't a good tool for that, but because when Fiddler acts a reverse proxy, it's an open proxy and you'll become a vector for malware. I know this from experience. It took 24h after I opened port 443 to my machine, until I started getting traffic from malware command and control nodes and from what looked like Tor exit nodes.
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