Make Bandit the default web server for new Phoenix apps (#5706)

* Generator now uses Bandit by default

(Also bump bandit dep to ~> 1.0)

* Add bandit to integration_test mixfile & unlock cowboy

* Update phoenix docs to include Bandit as an equal citizen & clarify opts

* Bump swoosh to a bandit-aware version

* Update installer/lib/phx_new/generator.ex

* Bump integration test bandit lock

---------

Co-authored-by: Chris McCord <chris@chrismccord.com>

guides/howto/using_ssl.md

@@ -31,7 +31,7 @@ Without the `otp_app:` key, we need to provide absolute paths to the files where
 Path.expand("../../../some/path/to/ssl/key.pem", __DIR__)
 ```
 
-The options under the `https:` key are passed to the Plug adapter, typically `Plug.Cowboy`, which in turn uses `Plug.SSL` to select the TLS socket options. Please refer to the documentation for [Plug.SSL.configure/1](https://hexdocs.pm/plug/Plug.SSL.html#configure/1) for more information on the available options and their defaults. The [Plug HTTPS Guide](https://hexdocs.pm/plug/https.html) and the [Erlang/OTP ssl](https://www.erlang.org/doc/man/ssl.html) documentation also provide valuable information.
+The options under the `https:` key are passed to the Plug adapter, typically `Bandit`, which in turn uses `Plug.SSL` to select the TLS socket options. Please refer to the documentation for [Plug.SSL.configure/1](https://hexdocs.pm/plug/Plug.SSL.html#configure/1) for more information on the available options and their defaults. The [Plug HTTPS Guide](https://hexdocs.pm/plug/https.html) and the [Erlang/OTP ssl](https://www.erlang.org/doc/man/ssl.html) documentation also provide valuable information.
 
 ## SSL in Development
 

installer/lib/mix/tasks/phx.new.ex

@@ -36,7 +36,7 @@ defmodule Mix.Tasks.Phx.New do
         * `bandit` - via https://github.com/mtrudel/bandit
 
       Please check the adapter docs for more information
-      and requirements. Defaults to "cowboy".
+      and requirements. Defaults to "bandit".
 
     * `--no-assets` - equivalent to `--no-esbuild` and `--no-tailwind`
 

installer/lib/phx_new/generator.ex

@@ -167,7 +167,7 @@ defmodule Phx.New.Generator do
 
   def put_binding(%Project{opts: opts} = project) do
     db = Keyword.get(opts, :database, "postgres")
-    web_adapter = Keyword.get(opts, :adapter, "cowboy")
+    web_adapter = Keyword.get(opts, :adapter, "bandit")
     ecto = Keyword.get(opts, :ecto, true)
     html = Keyword.get(opts, :html, true)
     live = html && Keyword.get(opts, :live, true)
@@ -304,8 +304,7 @@ defmodule Phx.New.Generator do
   end
 
   defp get_web_adapter("cowboy"), do: {:plug_cowboy, "~> 2.7", Phoenix.Endpoint.Cowboy2Adapter}
-  # TODO bump bandit to 1.0 when it's released
-  defp get_web_adapter("bandit"), do: {:bandit, ">= 0.0.0", Bandit.PhoenixAdapter}
+  defp get_web_adapter("bandit"), do: {:bandit, "~> 1.2", Bandit.PhoenixAdapter}
   defp get_web_adapter(other), do: Mix.raise("Unknown web adapter #{inspect(other)}")
 
   defp fs_db_config(app, module) do

installer/templates/phx_single/config/runtime.exs

@@ -43,7 +43,7 @@ if config_env() == :prod do
     http: [
       # Enable IPv6 and bind on all interfaces.
       # Set it to  {0, 0, 0, 0, 0, 0, 0, 1} for local network only access.
-      # See the documentation on https://hexdocs.pm/plug_cowboy/Plug.Cowboy.html
+      # See the documentation on https://hexdocs.pm/bandit/Bandit.html#t:options/0
       # for details about using IPv6 vs IPv4 and loopback vs public addresses.
       ip: {0, 0, 0, 0, 0, 0, 0, 0},
       port: port

installer/templates/phx_single/mix.exs

@@ -54,7 +54,7 @@ defmodule <%= @app_module %>.MixProject do
        app: false,
        compile: false,
        depth: 1},<% end %><%= if @mailer do %>
-      {:swoosh, "~> 1.3"},
+      {:swoosh, "~> 1.5"},
       {:finch, "~> 0.13"},<% end %>
       {:telemetry_metrics, "~> 0.6"},
       {:telemetry_poller, "~> 1.0"},<%= if @gettext do %>

installer/templates/phx_umbrella/apps/app_name/mix.exs

@@ -41,7 +41,7 @@ defmodule <%= @app_module %>.MixProject do
       {:ecto_sql, "~> 3.10"},
       {:<%= @adapter_app %>, ">= 0.0.0"},
       {:jason, "~> 1.2"}<% end %><%= if @mailer do %>,
-      {:swoosh, "~> 1.3"},
+      {:swoosh, "~> 1.5"},
       {:finch, "~> 0.13"}<% end %>
     ]
   end

installer/test/phx_new_test.exs

@@ -257,7 +257,7 @@ defmodule Mix.Tasks.Phx.NewTest do
 
       # Mailer
       assert_file("phx_blog/mix.exs", fn file ->
-        assert file =~ "{:swoosh, \"~> 1.3\"}"
+        assert file =~ "{:swoosh, \"~> 1.5\"}"
         assert file =~ "{:finch, \"~> 0.13\"}"
       end)
 
@@ -417,7 +417,7 @@ defmodule Mix.Tasks.Phx.NewTest do
 
       # No mailer or emails
       assert_file("phx_blog/mix.exs", fn file ->
-        refute file =~ "{:swoosh, \"~> 1.3\"}"
+        refute file =~ "{:swoosh, \"~> 1.5\"}"
         refute file =~ "{:finch, \"~> 0.13\"}"
       end)
 

installer/test/phx_new_umbrella_test.exs

@@ -200,7 +200,7 @@ defmodule Mix.Tasks.Phx.New.UmbrellaTest do
         assert file =~ "{:phoenix,"
         assert file =~ "{:phoenix_live_view,"
         assert file =~ "{:gettext,"
-        assert file =~ "{:plug_cowboy,"
+        assert file =~ "{:bandit,"
       end)
 
       # app deps
@@ -277,7 +277,7 @@ defmodule Mix.Tasks.Phx.New.UmbrellaTest do
 
       # Mailer
       assert_file(app_path(@app, "mix.exs"), fn file ->
-        assert file =~ "{:swoosh, \"~> 1.3\"}"
+        assert file =~ "{:swoosh, \"~> 1.5\"}"
         assert file =~ "{:finch, \"~> 0.13\"}"
       end)
 
@@ -413,7 +413,7 @@ defmodule Mix.Tasks.Phx.New.UmbrellaTest do
 
       # Without mailer
       assert_file(web_path(@app, "mix.exs"), fn file ->
-        refute file =~ "{:swoosh, \"~> 1.3\"}"
+        refute file =~ "{:swoosh, \"~> 1.5\"}"
         refute file =~ "{:finch, \"~> 0.13\"}"
       end)
 
@@ -709,14 +709,14 @@ defmodule Mix.Tasks.Phx.New.UmbrellaTest do
     end)
   end
 
-  test "new with bandit web adapter" do
-    in_tmp("new with bandit web adapter", fn ->
+  test "new with cowboy web adapter" do
+    in_tmp("new with cowboy web adapter", fn ->
       app = "custom_path"
       project_path = Path.join(File.cwd!(), app)
-      Mix.Tasks.Phx.New.run([project_path, "--umbrella", "--adapter", "bandit"])
-      assert_file(web_path(app, "mix.exs"), ":bandit")
+      Mix.Tasks.Phx.New.run([project_path, "--umbrella", "--adapter", "cowboy"])
+      assert_file(web_path(app, "mix.exs"), ":plug_cowboy")
 
-      assert_file(root_path(app, "config/config.exs"), "adapter: Bandit.PhoenixAdapter")
+      assert_file(root_path(app, "config/config.exs"), "adapter: Phoenix.Endpoint.Cowboy2Adapter")
     end)
   end
 

integration_test/mix.exs

@@ -51,7 +51,7 @@ defmodule Phoenix.Integration.MixProject do
       {:gettext, "~> 0.20"},
       {:jason, "~> 1.2"},
       {:swoosh, "~> 1.3"},
-      {:plug_cowboy, "~> 2.7"},
+      {:bandit, "~> 1.0"},
       {:bcrypt_elixir, "~> 3.0"},
       {:argon2_elixir, "~> 3.0"},
       {:pbkdf2_elixir, "~> 2.0"},