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diff --git a/actioncable/lib/assets/javascripts/action_cable.coffee.erb b/actioncable/lib/assets/javascripts/action_cable.coffee.erb
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+++ b/actioncable/lib/assets/javascripts/action_cable.coffee.erb
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+#= require_self
+#= require action_cable/consumer
+
+@ActionCable =
+ INTERNAL: <%= ActionCable::INTERNAL.to_json %>
+
+ createConsumer: (url = @getConfig("url")) ->
+ new ActionCable.Consumer @createWebSocketURL(url)
+
+ getConfig: (name) ->
+ element = document.head.querySelector("meta[name='action-cable-#{name}']")
+ element?.getAttribute("content")
+
+ createWebSocketURL: (url) ->
+ if url and not /^wss?:/i.test(url)
+ a = document.createElement("a")
+ a.href = url
+ # Fix populating Location properties in IE. Otherwise, protocol will be blank.
+ a.href = a.href
+ a.protocol = a.protocol.replace("http", "ws")
+ a.href
+ else
+ url