A connection is terminated when a service posts a 'disconnect' message to the responseChannel (previosly discussed).
The message needs to be in the following format. Remember that the id property uniquely identifies a connection; so services will need to track the 'ids' they're speaking to.
Http Services which handle Web Socket connections via Prism's Url Polling mechanisms may also terminate connections in a similar manner. They need to send the response object described above as the response body when the service is polled.
For example with the Koa Web Server: