This document describes version 4 of the websocket API. Any earlier version is unsupported and may be withdrawn at any time.
Base URL
Default:
wss://www.cfbenchmarks.com/ws/v4
Nasdaq Indices:
wss://nciprod1.cfbenchmarks.com/ws/v4
Authentication
This API requires users to specify an API key. This key can be obtained by contacting CF Benchmarks for a license.
If connecting using Javascript, assuming the key username is 'abc' and the key password is '123',
you would connect by specifying the protocol as the array ['cfb', 'abc', '123'].
Some language APIs require the key to be specified in the websocket request header. In this case you
would provide the username and key in the request header with a header field of the
form Authorization: Basic <credentials> where credentials is the
Base64 encoding of the username and key joined by a single colon ':'.