diff options
Diffstat (limited to 'examples/echo_get')
| -rw-r--r-- | examples/echo_get/README.md | 17 | ||||
| -rw-r--r-- | examples/echo_get/rebar.config | 4 | ||||
| -rw-r--r-- | examples/echo_get/src/echo_get.app.src | 15 | ||||
| -rw-r--r-- | examples/echo_get/src/echo_get.erl | 12 | ||||
| -rw-r--r-- | examples/echo_get/src/echo_get_app.erl | 26 | ||||
| -rw-r--r-- | examples/echo_get/src/echo_get_sup.erl | 23 | ||||
| -rw-r--r-- | examples/echo_get/src/toppage_handler.erl | 29 | ||||
| -rwxr-xr-x | examples/echo_get/start.sh | 3 |
8 files changed, 129 insertions, 0 deletions
diff --git a/examples/echo_get/README.md b/examples/echo_get/README.md new file mode 100644 index 0000000..9a09ca1 --- /dev/null +++ b/examples/echo_get/README.md @@ -0,0 +1,17 @@ +Cowboy GET Echo +=============== + +To compile this example you need rebar in your PATH. + +Type the following command: +``` +$ rebar get-deps compile +``` + +You can then start the Erlang node with the following command: +``` +./start.sh +``` + +Then point your browser to the indicated URL. You can change +the GET parameter to check that the handler is echoing properly. diff --git a/examples/echo_get/rebar.config b/examples/echo_get/rebar.config new file mode 100644 index 0000000..6ad3062 --- /dev/null +++ b/examples/echo_get/rebar.config @@ -0,0 +1,4 @@ +{deps, [ + {cowboy, ".*", + {git, "git://github.com/extend/cowboy.git", "master"}} +]}. diff --git a/examples/echo_get/src/echo_get.app.src b/examples/echo_get/src/echo_get.app.src new file mode 100644 index 0000000..ecbf01a --- /dev/null +++ b/examples/echo_get/src/echo_get.app.src @@ -0,0 +1,15 @@ +%% Feel free to use, reuse and abuse the code in this file. + +{application, echo_get, [ + {description, "Cowboy GET echo example."}, + {vsn, "1"}, + {modules, []}, + {registered, []}, + {applications, [ + kernel, + stdlib, + cowboy + ]}, + {mod, {echo_get_app, []}}, + {env, []} +]}. diff --git a/examples/echo_get/src/echo_get.erl b/examples/echo_get/src/echo_get.erl new file mode 100644 index 0000000..81d0f43 --- /dev/null +++ b/examples/echo_get/src/echo_get.erl @@ -0,0 +1,12 @@ +%% Feel free to use, reuse and abuse the code in this file. + +-module(echo_get). + +%% API. +-export([start/0]). + +%% API. + +start() -> + ok = application:start(cowboy), + ok = application:start(echo_get). diff --git a/examples/echo_get/src/echo_get_app.erl b/examples/echo_get/src/echo_get_app.erl new file mode 100644 index 0000000..8220bd3 --- /dev/null +++ b/examples/echo_get/src/echo_get_app.erl @@ -0,0 +1,26 @@ +%% Feel free to use, reuse and abuse the code in this file. + +%% @private +-module(echo_get_app). +-behaviour(application). + +%% API. +-export([start/2]). +-export([stop/1]). + +%% API. + +start(_Type, _Args) -> + Dispatch = [ + {'_', [ + {[], toppage_handler, []} + ]} + ], + {ok, _} = cowboy:start_listener(http, 100, + cowboy_tcp_transport, [{port, 8080}], + cowboy_http_protocol, [{dispatch, Dispatch}] + ), + echo_get_sup:start_link(). + +stop(_State) -> + ok. diff --git a/examples/echo_get/src/echo_get_sup.erl b/examples/echo_get/src/echo_get_sup.erl new file mode 100644 index 0000000..455af04 --- /dev/null +++ b/examples/echo_get/src/echo_get_sup.erl @@ -0,0 +1,23 @@ +%% Feel free to use, reuse and abuse the code in this file. + +%% @private +-module(echo_get_sup). +-behaviour(supervisor). + +%% API. +-export([start_link/0]). + +%% supervisor. +-export([init/1]). + +%% API. + +-spec start_link() -> {ok, pid()}. +start_link() -> + supervisor:start_link({local, ?MODULE}, ?MODULE, []). + +%% supervisor. + +init([]) -> + Procs = [], + {ok, {{one_for_one, 10, 10}, Procs}}. diff --git a/examples/echo_get/src/toppage_handler.erl b/examples/echo_get/src/toppage_handler.erl new file mode 100644 index 0000000..1322449 --- /dev/null +++ b/examples/echo_get/src/toppage_handler.erl @@ -0,0 +1,29 @@ +%% Feel free to use, reuse and abuse the code in this file. + +%% @doc GET echo handler. +-module(toppage_handler). + +-export([init/3]). +-export([handle/2]). +-export([terminate/2]). + +init(_Transport, Req, []) -> + {ok, Req, undefined}. + +handle(Req, State) -> + {Method, Req2} = cowboy_http_req:method(Req), + {Echo, Req3} = cowboy_http_req:qs_val(<<"echo">>, Req2), + {ok, Req4} = echo(Method, Echo, Req3), + {ok, Req4, State}. + +echo('GET', undefined, Req) -> + cowboy_http_req:reply(400, [], <<"Missing echo parameter.">>, Req); +echo('GET', Echo, Req) -> + cowboy_http_req:reply(200, + [{<<"Content-Encoding">>, <<"utf-8">>}], Echo, Req); +echo(_, _, Req) -> + %% Method not allowed. + cowboy_http_req:reply(405, Req). + +terminate(_Req, _State) -> + ok. diff --git a/examples/echo_get/start.sh b/examples/echo_get/start.sh new file mode 100755 index 0000000..4704feb --- /dev/null +++ b/examples/echo_get/start.sh @@ -0,0 +1,3 @@ +#!/bin/sh +erl -pa ebin deps/*/ebin -s echo_get \ + -eval "io:format(\"Point your browser at http://localhost:8080/?echo=test~n\")." |