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Connecting to "cometd" websocket

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iSubaru
iSubaru
Nov 19, 2022
0
#1

Hi, i am trying to connect to "cometd" websocket in NodeJS that is opening on https://www.chess.com/play/online "games/watch" tab, but it is protected with some data i can't reach :/ 

Does anyone know how to reproduce connection in node?

acity609
acity609
Nov 19, 2022
0
#2

Connection to a live game?

Martin_Stahl
Martin_Stahl
Moderator
Nov 19, 2022
0
#3

The API doesn't allow attaching to things like that. Anything not documented through the API is not supported, may not work, and potentially could be against the TOS.

iSubaru
iSubaru
Nov 20, 2022
0
#4
acity609 wrote:

Connection to a live game?

Connection to websocket that allow to observe live games. I think it is the only way to get recently finished game and it's ID. With that id we can use api and get pgn, fens etc.

 

paradox109
paradox109
Nov 20, 2022
0
#5

To successfully connect to chess.com cometd WebSockets you must include 'PHPSESSID' inside the cookie header. So you either forgot to include it or you are sending the wrong handshake data. 

Try to use BurpSuite, it def helps.

paradox109
paradox109
Nov 20, 2022
0
#6

You get PHPSESSID by logging in to chess.com, it does refresh from time to time(every 24h maybe,not sure) so you need to update it or make sure that it's always fresh when you try to connect to ws. 

iSubaru
iSubaru
Nov 20, 2022
0
#7

For all that need solution it should like this:

const cometd = new WebSocket("wss://live3.chess.com/cometd", {
  headers: {
    Cookie: "PHPSESSID=xxxxxxxxxxxxxxxxxxxxx",
  },
});