Websockets with Companion and External Systems

[ChrisPerko]

 The docs are missing examples on using the websockets api on the companion.  Is it possible to have a websocket between the companion and an external server?

I want to do something similar to the Leaderboard app where you can cheer/taunt a friend.  I was thinking of doing this with websockets, but if there is another way, please let me know 🙂

Thanks!

[LiamFitbit · Accepted solution]

You can use WebSockets as long as you've requested the access_internet permission and you're connecting to a secure server (ie wss://).

You can see docs here: https://developer.mozilla.org/en-US/docs/Web/API/WebSocket

For your describe use case, it sounds like fetch would be sufficient though. WebSockets are useful if you want the server to be able to push data to the companion, but if you're just pushing actions regular HTTP requests should be sufficient.

[guyrj33]

The original poster asked about websockets, not about Fetch. 

Redirecting the question leaves users who are looking for websocket information and examples driving down a dead end road. 

[cosmohoo]

I made ws server and client to connect my fitbit versa and externel system (3rd party system)
But It appears that I have to use wss protocol 
What is defference with ws and wss protocol?
 Do you have any wss server example??? 
I really hard to make wss server 
Please give me answer as soon as possible

My email address is abraham728@hanmail.net
If you need my code I can show you my code. 
But my code is just websocket server's basic example

[LiamFitbit]

wss:// is the secure version of ws://, it requires a valid certificate for the hostname you're using.