pion / offline-browser-communication Goto Github PK

View Code? Open in Web Editor NEW

195.0 10.0 22.0 104 KB

Demonstration of a browser connecting to Pion WebRTC without a signaling server.

Home Page: https://pion.ly/

Go 100.00%

go golang pion

offline-browser-communication's Introduction

Offline Browser Sync

WebRTC without a signaling server!

This repo demonstrates how you can connect two WebRTC proccesses without signaling. No configuration is needed ahead of time, so no hardcoding of IP Addresses. The peers use mDNS to connect to each other, and have pre-set ICE Credentials and DTLS Certificates.

Running

git clone https://github.com/pion/offline-browser-communication.git
cd offline-browser-communication
go run *.go
Open https://jsfiddle.net/nah7qvkj/

You should see the following in your terminal.

Ready to connect, please load https://jsfiddle.net/nah7qvkj/
Connection State has changed checking
Connection State has changed connected
DataChannel foo has opened

If everything worked you can now send messages from your browser to your terminal!

What this means

This means you can have two devices connect without any setup. No need to setup a server, or native apps with more control.

You could build stuff like.

Sync data between two PWA without a backend
Have a multiplayer game that never leaves your network
Build a conferencing/chat app that doesn't require any setup
Please share your cool ideas with us!

FAQ

Is this secure?

No currently everything is hardcoded, this is just a demonstration. I believe this could be reasonably secure if seeded properly. Better to ask a security person though.

What platforms are supported?

OSX and Linux

What browsers work?

Only Chromium so far. If there is interest I would like to support more

What libraries/dependencies does this use

Only Pion WebRTC it is a full Go implementation of WebRTC. It has zero C/C++ usage.

What is next?

I would like to get this into the IETF/W3C, but as an individual I am unable to be involved. If you are interested and have membership please reach out!

I want to talk about cool WebRTC stuff!

Join the Pion Slack

I need to update the DTLS Fingerprint

If you see an error like InvalidAccessError: x509Cert expired the certificate has expired. You can update it by following these instructions. Please submit a PR with the updated certificate as well, thanks!

  // Create new certificate
  go run `go env GOROOT`/src/crypto/tls/generate_cert.go --host=localhost --ecdsa-curve=P256

  // Create new fingerprint for jsfiddle
  openssl x509 -noout -fingerprint -sha256 -inform pem -in cert.pem

Community

Pion has an active community on the Golang Slack. Sign up and join the #pion channel for discussions and support. You can also use Pion mailing list.

We are always looking to support your projects. Please reach out if you have something to build!

If you need commercial support or don't want to use public methods you can contact us at [email protected]

License

MIT License - see LICENSE for full text

offline-browser-communication's People

Contributors

Stargazers

Watchers

offline-browser-communication's Issues

Could this work with just the browser from p2p?

I just discovered that there is a way to generate certificates that you can generate in the browser using RTCPeerConnection.generateCertificate

it's also possible to store this cert in indexedDB. and construct a peer connection using new RTCPeerConnection({certificates})

i have no understanding of why you would want to create your own certificates and store it in the indexedDB... haven't find any article/demo of someone who are using it of how and why you want to use own certificates

is it so you could create some kind of “reusable offer/answer”?

Dependency Dashboard

This issue provides visibility into Renovate updates and their statuses. Learn more

This repository currently has no open or pending branches.

Check this box to trigger a request for Renovate to run again on this repository

Getting Error when downloading packages

When trying to run the the app I receive this error

What are my doing wrong

By the way on Windows I couldn't use go run *go , I had to use go run . instead

Connection fails after updating the cert and the SHA256 fingerprint

I wanted to reinvestigate this amazing repo and update the certificate but I could not get it to work.
Perhaps I am doing something wrong...

Here are the steps I've done:

After getting the InvalidAccessError: x509Cert expired, ran:

  // Create new certificate
  go run `go env GOROOT`/src/crypto/tls/generate_cert.go --host=localhost --ecdsa-curve=P256

  // Create new fingerprint for jsfiddle
  openssl x509 -noout -fingerprint -sha256 -inform pem -in cert.pem

Ran go run *.go
Opened the jsfiddle link and replaced the SHA256 fingerprint in const answer for the one I got in the Terminal.
Saved and reran the jsfiddle.

But I still got the following error in the browser console:
"<a class='gotoLine' href='#98:15'>98:15</a> Uncaught InvalidStateError: Failed to execute 'send' on 'RTCDataChannel': RTCDataChannel.readyState is not 'open'"

Error when trying to run script.

I am trying to run the script and after downloading the dependencies, the terminal throws me this error:

`panic: InvalidAccessError: x509Cert expired

goroutine 1 [running]:
main.panicIfErr(...)
/Users/-/Desktop/offline-browser-communication-master/server.go:110
main.main()
/Users/-/Desktop/offline-browser-communication-master/server.go:50 +0x3b2
exit status 2
`