uneven drum
I'm trying to create a websocket client that has an authorization header. It seems that a lot of the functionality of websockets has been moved out of the standard library, and I don't see much in the core. Any advice on how to proceed?
For reference, I'm trying to do the following in Deno, rather than by using websocat:
https://trading-api.readme.io/reference/introduction#connecting
nova geyser
they are using this header in unintended way 😛
I believe it would look like this xD
new WebSocket("", ["Authorization: Bearer safoinasfoiasfoih"])
because this header is used to specify "inner?" protocol
uneven drum
Interesting, when I try that I get an "Invalid protocol value" runtime error
nova geyser
as I've said - they made it working like this server-side
uneven drum
I see
nova geyser
they read and parse that "as protocol"... tbh it is genious if it is not somewhat insecure xD
uneven drum
haha
Tools like websocat an uwsc have a headers flag, are they passing it as a protocol?
nova geyser
no, w8, looks like I am uneducated, take a look here:
they talk about authing your ws connection here
hope it helps ^^
uneven drum
I'll take a look - thanks for the help!
nova geyser
^^
uneven drum
From the article:
If the client doesn’t support sending authorization headers, the secure token can be sent in URL:
> const ws=new WebSocket('ws://localhost:5000?accessToken=TOKEN-1');
> ```
How do you think you would send `Authorization: Bearer ${token}` in the URL?I think this is probably done on the server, too. So I don't think this is a general work around it, but rather a way around it if you control the client and server
I'm thinking that it's probably that I need to make an HTTP request to the server and then upgrade the connection. I'm not exactly sure how to do that yet...
nova geyser
TOKEN-1 is your token
uneven drum
I think I tried that, but let me make sure
Yeah, it doesn't seem to work. I'm getting an authorization error trying to open the websocket (I'm able to connect with websocat with the same token)
nova geyser
If you can open your source or invite me - I would be interested in what are you making 😄
I mean
at this point most likely you know abot this topic more than me
when I had to do this stuff I had some flow like this...
I had "please give me session link" rest route, it gave you presigned url for websocket
and I was assuming that the client that knows this random route is the same who asked on the rest route
uneven drum
I'm making a bot to run on Kalshi. At this point, there's not much to show. I have something that uses requests and makes trades, but they just recently introduced their websocket, and having an event-driven bot seems much better than a polling one.
At the moment, I'm just trying to get the websocket to work on its own.
Here's the code I'm working from
import "https://deno.land/x/dotenv@v3.2.0/load.ts";
import * as z from "https://deno.land/x/zod@v3.16.1/mod.ts";
const kalshiToken = z.string().parse(Deno.env.get('KALSHI_API_TOKEN'))
const kalshiUrl = 'wss://demo-api.kalshi.co/trade-api/ws/v2'
const url = `${kalshiUrl}?accessToken=${kalshiToken}`
const ws = new WebSocket(url)
ws.onopen = (event) => {
console.log('Connected to Kalshi', event)
}
ws.onclose = (event) => {
console.log('Disconnected from Kalshi', event)
}
ws.onmessage = (event) => {
console.log('Message from Kalshi', event)
}
ws.onerror = (event) => {
console.log('Error from Kalshi', event)
}
That might be the way to go - I'm new to using websockets so I'm very much trying to figure out how to use them at all
nova geyser
That might be the way to go - I'm new to using websockets so I'm very much tryin...
I wish you only profits then 😄
uneven drum
Haha, thanks for your help so far!
nova geyser
There is something like this
https://deno.land/api@v1.29.1?unstable&s=WebSocketStream
but.
You have to enable unstable features, options here take headers
@uneven drum ^
(Haven't tried it ever myself Kappa)
uneven drum
Ah, maybe that's what I'm looking for - thanks for finding it!