SkyRTC is an open source real-time communication framework based on Node.js and WebRTC. It provides video, audio and data communication capabilities, can easily realize real-time transmission, and is scalable and highly customizable. This article will introduce how to install SkyRTC in Node.js environment.
1. Install Node.js
Before starting to install SkyRTC, you need to install Node.js first. Node.js can be downloaded and installed on the official website: https://nodejs.org/en/download/.
After the installation is complete, you can run the node -v command in the command line to verify whether the installation is successful. If the installation is successful, the Node.js version number will be displayed.
2. Install SkyRTC
- Create a new project
First, you need to create a new project folder.
Use the following command from the command line:
mkdir skyrtc-demo cd skyrtc-demo
- Install SkyRTC
Install SkyRTC in the created project folder.
Use the following command:
npm install skyrtc --save
This command will install SkyRTC from the npm library and add the dependency of "skyrtc" to the project.
- Write sample code
Create a file called server.js and enter the following code:
const SkyRTC = require('skyrtc')
const server = new SkyRTC()
server.listen(3000)This simple program will create SkyRTC server and runs on port 3000.
- Run the sample program
Use the following command on the command line to run the sample program:
node server.js
The SkyRTC server will start and listen on port 3000 . Now, you can start writing the client code.
3. Writing client code
SkyRTC supports WebRTC technology, so it needs to be implemented using a browser on the client.
- Create HTML page
Create a file named index.html and enter the following code:
<!DOCTYPE html>
<html>
<head>
<title>SkyRTC Demo</title>
</head>
<body>
<video id="remoteVideo" autoplay></video>
<video id="localVideo" autoplay muted></video>
<script src="/skyrtc.js"></script>
<script>
const socket = io.connect()
const rtc = SkyRTC()
rtc.on('stream_added', function (stream, socketId) {
const remoteVideo = document.getElementById('remoteVideo')
remoteVideo.srcObject = stream
})
rtc.getLocalStream(function (stream) {
const localVideo = document.getElementById('localVideo')
localVideo.srcObject = stream
rtc.attachStream(stream, 'localVideo')
})
rtc.on('ready', function (socket) {
rtc.createRoom('room1', function (err, room) {
if (!err) {
console.log('Room created:', room)
rtc.joinRoom(room.roomToken, function (err, people) {
if (!err) {
console.log('People:', people)
}
})
}
})
})
</script>
</body>
</html>This simple page will use JavaScript library provided by SkyRTC. The HTML page contains two video elements, used to display local video and remote video respectively.
- Create JavaScript file
In the same directory, create a file named main.js and enter the following code:
const express = require('express')
const app = express()
const http = require('http')
const server = http.createServer(app)
const io = require('socket.io').listen(server)
app.get('/', function (req, res) {
res.sendFile(__dirname + '/index.html')
})
app.use(express.static(__dirname + '/public'))
const SkyRTC = require('skyrtc')
const skyrtcServer = new SkyRTC(io)
server.listen(3000, function () {
console.log('Server running on port 3000')
})This code An Express application will be created and run on port 3000. It will also create a WebSocket server using the Socket.io library and connect it to the SkyRTC server.
- Run the example
Run the example from the command line using the following command:
node main.js
The SkyRTC server will start and run on port 3000. You can now access the SkyRTC sample by opening http://localhost:3000 in your browser.
4. Summary
SkyRTC is an open source real-time communication framework based on Node.js and WebRTC, which can easily realize real-time transmission and is scalable and highly customizable. In this article, we introduce how to install SkyRTC in the Node.js environment, and write a simple sample program to use SkyRTC to implement the basic functions of video communication. If you want to learn more about using the SkyRTC framework, you can check out the official documentation and sample programs.
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