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Productive. Reliable. Fast. A productive web framework that does not compromise speed or maintainability.
Security advisory:
This version has known vulnerabilities.
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Files
lib/phoenix/endpoint/cowboy2_adapter.ex
defmodule Phoenix.Endpoint.Cowboy2Adapter do
@moduledoc """
The Cowboy2 adapter for Phoenix.
It implements the required `child_spec/3` function as well
as WebSocket transport functionality.
## Custom dispatch options
You can provide custom dispatch options in order to use Phoenix's
builtin Cowboy server with custom handlers. For example, to handle
raw WebSockets [as shown in Cowboy's docs](https://github.com/ninenines/cowboy/tree/2.0.x/examples)).
The options are passed to both `:http` and `:https` keys in the
endpoint configuration. However, once you pass your custom dispatch
options, you will need to manually wire the Phoenix endpoint by
adding the following rule:
{:_, Phoenix.Endpoint.Cowboy2Handler, {MyAppWeb.Endpoint, []}}
For example:
config :myapp, MyAppWeb.Endpoint,
http: [dispatch: [
{:_, [
{"/foo", MyAppWeb.CustomHandler, []},
{:_, Phoenix.Endpoint.Cowboy2Handler, {MyAppWeb.Endpoint, []}}
]}]]
It is also important to specify your handlers first, otherwise
Phoenix will intercept the requests before they get to your handler.
"""
require Logger
@doc false
def child_spec(scheme, endpoint, config) do
if scheme == :https do
Application.ensure_all_started(:ssl)
end
dispatches = [{:_, Phoenix.Endpoint.Cowboy2Handler, {endpoint, endpoint.init([])}}]
config = Keyword.put_new(config, :dispatch, [{:_, dispatches}])
spec = Plug.Cowboy.child_spec(scheme: scheme, plug: {endpoint, []}, options: config)
update_in spec.start, &{__MODULE__, :start_link, [scheme, endpoint, &1]}
end
@doc false
def start_link(scheme, endpoint, {m, f, [ref | _] = a}) do
# ref is used by Ranch to identify its listeners, defaulting
# to plug.HTTP and plug.HTTPS and overridable by users.
case apply(m, f, a) do
{:ok, pid} ->
Logger.info(fn -> info(scheme, endpoint, ref) end)
{:ok, pid}
{:error, {:shutdown, {_, _, {{_, {:error, :eaddrinuse}}, _}}}} = error ->
Logger.error [info(scheme, endpoint, ref), " failed, port already in use"]
error
{:error, _} = error ->
error
end
end
@doc false
def info(scheme, endpoint, ref) do
server = "cowboy #{Application.spec(:cowboy)[:vsn]}"
"Running #{inspect endpoint} with #{server} at #{bound_address(scheme, ref)}"
end
defp bound_address(scheme, ref) do
case :ranch.get_addr(ref) do
{:local, unix_path} ->
"#{unix_path} (#{scheme}+unix)"
{addr, port} ->
"#{:inet.ntoa(addr)}:#{port} (#{scheme})"
end
end
end