Add support for websocket_tail output

[muhlpachr]

Would you consider to add WebSocket output with functionality alike https://github.com/allinurl/gwsocket (allowing message trashing in case there is not any client) to be able to watch/check stream output just from web browser please ?

[Jeffail]

Hey @muhlpachr, if there are multiple clients connected would you expect messages to be broadcast to all of them?

There's a possibility of adding an output mechanism to wrap http_server, where if it doesn't accept a transaction the message is dropped, which would get you partially there. However, I'd need to implement a different mechanism for publishing messages to N clients.

[muhlpachr]

@Jeffail yes, if there are multiple clients connected, I would like to broadcast message to all of them like https://github.com/allinurl/gwsocket.

It would be nice to be able to do that without additonal component like gwsocket.
I do understand, that adding (publishing over http server) client JavaScript terminal together with WebSocket is not usual stream processing output. I consider it useful for troubleshooting and debugging.

Streaming through HTTP GET is limited by web browser timeouts for GET and it also do not reconnect autonomously from web browser in case of connectivity troubles.

What kind of wrap for http_server do you mean please ?