My question is kinda complex, so I think it's best to tell what I'm trying to accomplish.
My job is testing a telecommunication application. The app has a browser interface, the user can connect their phone extension to it, make and receive calls through the browser.
To test, we have a node.js Tool, that simulates the browser, sending and receiving the requests from the server instead of the browser interface. It works perfectly.
My problem is that the application also can work with WebRTC. In this case it's the browser who take care of the call, not the "physical" phone extension. SO I would need to implement the WebRTC in the test tool. How can I do that?
Most things I find in the web is to implement the server side on Node.js, while leaving the browser side, to well, the browser. But that is the part I need.
you can enable webrtc on your node js test tool just by installing webrtc package on your node js as below
npm install wrtc
follow below link if you want to understand apis and other functionalities
node-webrtc
Related
I have a question already search on google but not find a good answer.
What is the job of nodejs & ExpressJS in mean stack development ? Like is it some thing like php to create api and angular will call it ? Or something else
You're exactly right, Node.js is used in MEAN stack to create backend code and APIs that are called from a frontend Angular app.
Angular is the way to create an SPA (Single Page Application).
Wikipedia:
A single-page application (SPA) is a web application or web site that
interacts with the user by dynamically rewriting the current page
rather than loading entire new pages from a server.
ExpressJS
What is Express.js. Express is a fast, assertive, essential and
moderate web framework of Node.js. You can assume express as a layer
built on the top of the Node.js that helps manage a server and routes.
It provides a robust set of features to develop web and mobile applications.
So on top of node-js which is your server side application where you can build your apis that your angular SPA will consume, you have Express JS which is a ready solution to help you.
This way, you will not need to solve problems like routing which have already been solved by the framework in an "optimal" or at least commonly agreed "good enough" way.
There is an excellent answer on express js in stackoverflow here
Yes, you right it is like so. NodeJs is used to create a server, then APIs and Angular call those API from the Front-End.
Detailed Description:
What is NodeJs
You can create a server using NodeJs where you will have a bunch of APIs.
These APIs can be called from an Angular app.
Official Definition: Node.js is a runtime environment that executes JavaScript code outside of a browser. Outside of a browser means Server.
What is ExpressJs
ExpressJS is a prebuilt NodeJS framework that can help you in creating server-side web applications faster and smarter.
Note: It is not necessary to use ExpressJs if you are using NodeJs.
What is Angular
Angular is a framework for building Single Page Application(SAP) web
applications.
SAP means your site does not reload the page when you move from one page to another.
Your Angular app calls NodeJs API.
Angular is a library for building Single Page Applications which (typically) run inside a web browser.
Node.js is a way of running software written in JavaScript outside of a browser. It has many uses.
Software written to run under Node.js — that is strictly relevant to the topics you are asking about — includes:
Build tools used with Angular (converting code is written in ways optimal for developers to edit and debug to ways optimal for delivering to and running in a browser).
Other helper tools for software development (such as #angular/cli which creates a skeleton set of code for an Angular project)
HTTP servers used to provide web services (a type of API) for client applications (which may be written in Angular) to access
Express.js is a library for Node.js which provides prewritten solutions for many of the tasks an HTTP server needs to perform.
You can write many kinds of software in Node.js. I have some code lurking around that loops over all the images in a directory and spits out a PDF of them. It doesn't even go near the Internet.
Is it possible to include the google assistant into my local web application so that everyone can use it? I've got a JSF-Application that runs on a local tomcat 7 server. My goal is to change the views by voice. I want to do it with the google assistant sdk.
There is the service sdk (python, all functions) and the library sdk(gPRC (java), general function). I tried the java-client, but the hotword detection only works for the service sdk. I need the hotword detection.
Can I run the service python google assistant and my jsf-app on one tomcat server? I can't get my head around it and need your help.
This is only the first step to my goal. Have you any suggestions?
Hotword detection would be non-trivial to implement. A web application contains two parts: a client, which would be the web browser, and the server, which is your local tomcat server.
Web apps basically work with multiple clients communicating to one server through HTTP requests, primarily through Javascript. Your server then processes this, and the cool thing is that the server can be any language you want.
However, the client cannot directly interact with server-side code. This means that locally running feature like hotword detection on the server cannot be directly controlled by the client. You'd need to use a client-side hotword detection library, which would presumably need to be written in Javascript.
Can you tell me more about the relationship between the two? I want to (for example) write a little tool which plays audio files on my raspberry pi. Would I then do the player and the players interface completely in React, and then just connect to node in order to get the actual files?
Or, more generally but the same thing, if I would want to write an application that does certain things (writes files, records audio, changes system settings etc.) that would all be done in nodejs, but if I want to have an interface I would use something like React?
I am a bit confused, but I hope this question is valid!
Node and React can be used together.
There is even the MERN stack that helps with that:
MERN is a scaffolding tool which makes it easy to build universal apps using Mongo, Express, React and NodeJS. It minimises the setup time and gets you up to speed using proven technologies.
See: http://mernjs.org/
But you can use React with any other Node framework, not only with Express. React can work with any REST API so whatever you use to build a REST API can be consumed by the frontend written in React.
Some other options include: Hapi, Restify, LoopBack. For more see:
http://nodeframework.com/
from the official React Documentation React is "a JavaScript library for build user interfaces". In very watered down terms (and I mean watered down) React could be thought of as a templating library (please don't shoot me for that).
What I've learned about React is it is more like the "V"iew in MVC. It provides you a way to present the user interface using JavaScript and JSX. With the little I know about from various tutorials, I really like working with React.
Yes, this two thinks can work together, I am currently working at such project. I will point out main think here. That is where you put your routing. Does it goes to Node.js server or to React Router. This is important because it defines where you application logic should be.
ReactTS is a scaffolding engine for React on ASP.NET Core. Very powerful, and very fast - will generate your entire application with a single button click. You can also customize the templates. Check it out here... http://bssdev.biz/DevTools/React-Turbo-Scaffolding-Free-Download
I have created a chat application using sails.js (node.js) and socket.IO.
I need to implement audio chat and file transfers along with it.
Could anyone help me in getting basic tutorial links for integrating WebRTC with socket.IO?
Thanks in advance.
If I were you, I would use a WebRTC library providing both the client and the server side. Check EasyRTC, SimpleWebRTC, PeerJS or others. Most libraries are implemented in Javascript and run in Node.js.
You will find tutorials in their respective websites.
I personally use PeerJS, the code and documentation are both very good, and it fully supports data channels (useful for file transfer). The only thing is that there are only 2 founders, and the community seems quite small.
I am also planning to make your kind of app on nodejs. During my research I found that WEBRTC support for mobile browsers is limited. In todays world whenever we are building a Web app we consider that a major portion of our users are going to use it on mobile phone. WebRtc is supported on android browsers like chrome, Firefox and opera. But on iPhone it doesn't support safari nor windows phone browsers.
You should take a look at Wowza streaming cloud at https://www.wowza.com/docs/wowza-streaming-cloud-free-trial
I am interested in develop a rt module for my website with socketstream + node.js. I am only interested in do the server side in socketstream, not the client side. How can I access the socketstream from a normal php/html app, wich js i have to include ? I am mainly interested in rpc, pub/sub and authentication/session.
I would not recommend doing this, as it is unorthodox.
That said, I do recall that someone wanted to use an early version of SocketStream from within their application, which was built on the .net platform. It turned out that they got it to work by embedding the SocketStream app's web page inside of an iframe.
Check out to this framework:
http://www.socketstream.org/
Comes with a lot of examples and it's easy to use.