set up action able to work with webrtc in localhost

app/controllers/application_controller.rb

@@ -1,4 +1,5 @@
 class ApplicationController < ActionController::Base
   protect_from_forgery with: :exception
   before_action :authenticate_user!
+  protect_from_forgery unless: -> { request.format.json? } # Only accept json
 end

app/controllers/video_sessions_controller.rb

@@ -0,0 +1,15 @@
+class VideoSessionsController < ApplicationController
+  def create
+    #  HTTP status code 200 with an empty body
+    head :no_content
+    ActionCable.server.broadcast "video_session_channel", session_params
+  end
+
+  private
+
+  def session_params
+    # SDP = Session description protocol (codec info from client)
+    # Candidate = ICE candidates (e.g. TURN and STUN server)
+    params.permit(:type, :from, :to, :sdp, :candidate)
+  end
+end