Convert the websocket example to a release

examples/websocket/Makefile

@@ -0,0 +1,14 @@
+PROJECT = websocket
+
+DEPS = cowboy
+dep_cowboy = pkg://cowboy master
+
+.PHONY: release clean-release
+
+release: clean-release all
+	relx
+
+clean-release:
+	rm -rf _rel
+
+include ../../erlang.mk

examples/websocket/README.md

@@ -1,17 +1,19 @@
-Cowboy websocket
+Websocket example
-================
+=================
 
-To compile this example you need rebar in your PATH.
+To try this example, you need GNU `make`, `git` and
+[relx](https://github.com/erlware/relx) in your PATH.
 
-Type the following command:
+To build the example, run the following command:
-```
+
-$ rebar get-deps compile
+``` bash
+$ make
 ```
 
-You can then start the Erlang node with the following command:
+To start the release in the foreground:
-```
+
-./start.sh
+``` bash
+$ ./_rel/bin/websocket_example console
 ```
 
-Then point your browser to the indicated URL to open a websocket client.
+Then point your browser at [http://localhost:8080](http://localhost:8080).
-Not all browsers support websockets. It was tested with Chromium.

examples/websocket/rebar.config

@@ -1,6 +0,0 @@
-{deps, [
-	{cowboy, ".*",
-		{git, "git://github.com/extend/cowboy.git", "master"}},
-	{mimetypes, ".*",
-		{git, "git://github.com/spawngrid/mimetypes.git", "master"}}
-]}.

examples/websocket/relx.config

@@ -0,0 +1,2 @@
+{release, {websocket_example, "1"}, [websocket]}.
+{extended_start_script, true}.

examples/websocket/src/toppage_handler.erl

@@ -1,26 +0,0 @@
-%% Feel free to use, reuse and abuse the code in this file.
-
--module(toppage_handler).
-
--export([init/3]).
--export([handle/2]).
--export([terminate/3]).
-
-init(_Transport, Req, []) ->
-	{ok, Req, undefined}.
-
-handle(Req, State) ->
-	Html = get_html(),
-	{ok, Req2} = cowboy_req:reply(200,
-		[{<<"content-type">>, <<"text/html">>}],
-		Html, Req),
-	{ok, Req2, State}.
-
-terminate(_Reason, _Req, _State) ->
-	ok.
-
-get_html() ->
-	{ok, Cwd} = file:get_cwd(),
-	Filename =filename:join([Cwd, "priv", "html_ws_client.html"]),
-	{ok, Binary} = file:read_file(Filename),
-	Binary.

examples/websocket/src/websocket.erl

@@ -1,13 +0,0 @@
-%% Feel free to use, reuse and abuse the code in this file.
-
--module(websocket).
-
-%% API.
--export([start/0]).
-
-start() ->
-	ok = application:start(crypto),
-	ok = application:start(cowlib),
-	ok = application:start(ranch),
-	ok = application:start(cowboy),
-	ok = application:start(websocket).

examples/websocket/src/websocket_app.erl

@@ -12,11 +12,15 @@
 start(_Type, _Args) ->
 	Dispatch = cowboy_router:compile([
 		{'_', [
-			{"/", toppage_handler, []},
+			{"/", cowboy_static, [
+				{directory, {priv_dir, websocket, []}},
+				{file, <<"index.html">>},
+				{mimetypes, [{<<".html">>, [<<"text/html">>]}]}
+			]},
 			{"/websocket", ws_handler, []},
 			{"/static/[...]", cowboy_static, [
 				{directory, {priv_dir, websocket, [<<"static">>]}},
-				{mimetypes, {fun mimetypes:path_to_mimes/2, default}}
+				{mimetypes, [{<<".js">>, [<<"application/javascript">>]}]}
 			]}
 		]}
 	]),

examples/websocket/start.sh

@@ -1,4 +0,0 @@
-#!/bin/sh
-erl -pa ebin deps/*/ebin -s websocket \
-    -eval "io:format(\"Point your browser at http://localhost:8080/ to use a simple websocket client~n\")."
-