How to read websocket response in linux shell

Question

Writing a bash script to connect to GDAX\'s Websocket Feed at wss://ws-feed.gdax.com but curl doesn\'t seem to support this as I get

curl \"wss://ws-feed.gd         


        

Answer 1

ws start connection by http protocol, you have to change ws to http and some extra headers like this:

curl --include \
     --no-buffer \
     --header "Connection: Upgrade" \
     --header "Upgrade: websocket" \
     --header "Host: example.com:80" \
     --header "Origin: http://example.com:80" \
     --header "Sec-WebSocket-Key: SGVsbG8sIHdvcmxkIQ==" \
     --header "Sec-WebSocket-Version: 13" \
     "https://ws-feed.gdax.com"

https://gist.github.com/htp/fbce19069187ec1cc486b594104f01d0