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还是在那个websocket_demo的例子
rebar-creator create-app websocket_demo
tree一下看看大概目录
├── cert │ ├── cowboy-ca.crt │ ├── server.crt │ └── server.key ├── src │ ├── path_helper.erl │ ├── route_helper.erl │ ├── websocket_demo.app.src │ ├── websocket_demo_app.erl │ └── ws_handler.erl ├── static │ ├── index.html │ └── js │ └── jquery.min.js
cert目录从cowboy的sample里面的拿过来即可，ca证书需要全部信任，浏览器得重启，具体google看看
static目录随便弄点过来显示下https即可，这个用来测试整数有没有问题的
直接贴代码
path_helper.erl
-module(path_helper). -export([get_path/1]). get_path(ExtraPath)-> {ok,CurrentPath} = file:get_cwd(), Path = string:concat(CurrentPath,"/"), string:concat(Path,ExtraPath).
route_helper.erl
-module(route_helper). -export([get_routes/0]). get_routes() -> StaticPath = path_helper:get_path("../static/"), [ {‘_‘, [ {"/websocket", ws_handler, []}, {"/static/[...]", cowboy_static, {dir, StaticPath}} ]} ].
websocket_demo_app.erl
-module(websocket_demo_app). -behaviour(application). -export([start/2, stop/1]). start(_Type, _Args) -> ok = application:start(crypto), ok = application:start(cowlib), ok = application:start(ranch), ok = application:start(cowboy), CertDir = path_helper:get_path("../cert/"), io:format("~p~n",[CertDir]), Routes = route_helper:get_routes(), Dispatch = cowboy_router:compile(Routes), Port = 8080, TransOpts = [ {port, Port}, {cacertfile, CertDir ++ "/cowboy-ca.crt"}, {certfile, CertDir ++ "/server.crt"}, {keyfile, CertDir ++ "/server.key"} ], ProtoOpts = [{env, [{dispatch, Dispatch}]}], {ok, _} = cowboy:start_https(https,100, TransOpts, ProtoOpts). stop(_State) -> ok.
ws_handler.erl
-module(ws_handler). -behaviour(cowboy_websocket_handler). -export([init/3]). -export([websocket_init/3]). -export([websocket_handle/3]). -export([websocket_info/3]). -export([websocket_terminate/3]). init({tcp, http}, _Req, _Opts) -> io:format("init ~n"), {upgrade, protocol, cowboy_websocket}; init({ssl, http}, _Req, _Opts) -> io:format("ssl init ~n"), {upgrade, protocol, cowboy_websocket}. websocket_init(_TransportName, Req, _Opts) -> io:format("websocket_init ~n"), erlang:start_timer(1000, self(), <<"Hello!">>), {ok, Req, undefined_state}. websocket_handle({text, Msg}, Req, State) -> %% io:format("websocket_handle text ~p,~p,~p~n",[Msg,Req,State]), {reply, {text, << "That‘s what she said! ", Msg/binary >>}, Req, State}; websocket_handle(_Data, Req, State) -> %% io:format("websocket_handle ~p,~p,~p~n",[_Data,Req,State]), {ok, Req, State}. websocket_info({timeout, _Ref, Msg}, Req, State) -> %io:format("websocket timeout ~n"), erlang:start_timer(1000, self(), <<"How‘ you doin‘?">>), {reply, {text, Msg}, Req, State}; websocket_info(_Info, Req, State) -> io:format("websocket_info ~p,~p,~p~n",[_Info,Req,State]), {ok, Req, State}. websocket_terminate(_Reason, _Req, _State) -> io:format("terminate ~n"), ok.
注意，在ssl的是，init的参数
在线测试http://www.baiyangliu.com/lab/websocket/
本地websocket测试地址
wss://loclahost:8080/websocket
如果提示ssl错误什么的，最好先看看下面这个对不对
https://localhost:8080/static/index.html
注：ssl以后，访问必须以域名，不能ip。
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原文地址：http://www.cnblogs.com/ziyouchutuwenwu/p/4199778.html
