How to get channel inside function decorated by @on_message(channel="^room-") ?

[Cobos]

Hi!

Is there any chance to get channel inside function decorated by:

@on_message(channel="^room-")
def my_chat_handler(request, socket, context, message):
    # TODO: How can I get channel
    ...

I can get all channels connected with socket - but I just need this one, which sends message.

Currently I'm sending channel in message directly from JavaScript in my client - but I want to secure communication, by channel recognition on server.

I searched a lot but found nothing (Maybe I'm asking google wrong questions?). Maybe answer is very simple and obwious to You.

Please, help me. What can I do?