A web application for students to respond to the instructor's online teaching
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StudentSOS is a web application for students to respond to the instructor's online teaching.
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StudentSOS consists of two pages send out in two different ports. One page is for students at port 5500, and the other page is for the instructor at port 8080.
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StudentSOS uses cookies on the student's page.
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ngrok can be used to expose the server for the students to the Internet.
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Each student may be able to vote OK or SOS for more than once for each topic if they clear the cookies or access the student's page from different browsers.
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The maximum number of connections in ngrok per minute is 20, but it goes up to 40 after setting up the Authtoken.
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The public URL for the student's page changes every time ngrok.exe restarts since ngrok could provide only temporary public URLs.
Command: node app.js
Command (Cmd): ngrok http 5500 --region=ap
Command (Terminal): ./ngrok http 5500 --region=ap
Note: In the terminal, you must navigate to the directory of ngrok.exe to run the command above.
URL: http://localhost:8080/
Local URL: http://localhost:5500/
Public URL: as given by ngrok (for students)
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In Command Prompt or Terminal, navigate to the StudentSOS directory.
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Run the command below to fire up the server.
Command:
node app.jsAfter running
node app.js, you should see the output as shown below. Output:
Student server hosting at http://localhost:5500/ Instructor server hosting at http://localhost:8080/Note:
- You can check the current version of your node.js by running the command,
node -v. - You can also download node.js from the website, https://nodejs.org/en/download/.
- To terminate the server, press Ctrl+C.
- You can check the current version of your node.js by running the command,
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Now, open ngrok.exe or command prompt or terminal and run the command below to expose the server to the Internet.
Command:
ngrok http 5500 --region=ap(Port: 5500, Region: Asia-Pacific)You will receive the public URLs where the students can access the web application.
Note:
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You can download ngrok.exe for free at https://ngrok.com/download.
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You can also use other applications to expose the local server to the Internet.
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To set the ngrok Authtoken for more connections at a time, run the command below in ngrok.exe or command prompt or terminal. You only have to run it once. The Authtoken is saved in the default configuration file.
Command (Cmd):
ngrok authtoken <YOUR_AUTHTOKEN>
Command (Terminal):./ngrok authtoken <YOUR_AUTHTOKEN>You can register to get your own Authtoken for free at https://ngrok.com/.
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