https://github.com/ac000/websocket_demo

A demo of WebSockets in C
https://github.com/ac000/websocket_demo

c websocket websocket-protocol websocket-server websockets

Last synced: 7 days ago
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A demo of WebSockets in C

• Host: GitHub
• URL: https://github.com/ac000/websocket_demo
• Owner: ac000
• License: mit
• Created: 2014-02-25T01:12:39.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2022-05-01T20:16:53.000Z (over 2 years ago)
• Last Synced: 2023-04-14T01:30:47.594Z (over 1 year ago)
• Topics: c, websocket, websocket-protocol, websocket-server, websockets
• Language: C
• Size: 54.7 KB
• Stars: 1
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README
  • License: MIT-LICENSE.txt

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README

        
This is a simple demonstration of WebSockets in C. It simply consists of a

server and a HTML page.

After it gets a connection, every two seconds (default) it will send

the hostname, uptime and rx & tx bytes of the system running the server

(can be the same as the client).

Build the server (make), run it (non-root), then load the HTML page

into a browser. You should then see a simple page showing the above

information updating every two seconds. Change the interface to show

stats for and adjust the frequency of updates using the 'spinner' widget.

Really simple, just shows the basics of what's needed for two way

communications.

The WebSocket protocol is defined here: http://tools.ietf.org/html/rfc6455

It also demonstrates the use of epoll(7) to handle multiple connections

in a single process.

It will also make use of libseccomp (if installed) to constrain what system

calls can be used once up and running. This really just serves as a

demonstration.

It also implements WebSockets over TLS (wss://), this can be enabled by

passing 'tls' to the websocket_demo command. And by using

wss://localhost:1976/ as the websocket connection string in

websocket_demo.html

You will also need a TLS certificate and key (can be self made, required

some faffing about in Firefox to get it to work) and specify them in the

the TLS_CERT & TLS_KEY variables in websocket_demo.c

Licensed under the MIT license, see MIT-LICENSE.txt