{"id":1228,"date":"2020-12-06T01:56:13","date_gmt":"2020-12-05T16:56:13","guid":{"rendered":"https:\/\/dalomo.net\/blog\/?p=1228"},"modified":"2020-12-06T01:56:13","modified_gmt":"2020-12-05T16:56:13","slug":"%e3%83%81%e3%83%a3%e3%83%83%e3%83%88%e3%82%92%e4%bd%9c%e3%82%8a%e3%81%9f%e3%81%84%e2%91%a2-node-jssocket-io","status":"publish","type":"post","link":"https:\/\/dalomo.net\/blog\/2020\/12\/06\/1228\/","title":{"rendered":"\u30c1\u30e3\u30c3\u30c8\u3092\u4f5c\u308a\u305f\u3044\u2462 Node.js+Socket.IO"},"content":{"rendered":"

Node.js+Socket.IO<\/h1>\n

\u3058\u3083\u30fc\u30c1\u30e3\u30c3\u30c8\u3092\u4f5c\u3063\u3066\u3053\u30fc\u3002\u516c\u5f0f\u304c\u63d0\u4f9b\u3057\u3066\u308b\u306e\u304c\u3042\u308b\u306e\u3067<\/p>\n

https:\/\/socket.io\/get-started\/chat\/<\/a><\/p>\n

\u3053\u308c\u898b\u306a\u304c\u3089\u3084\u3063\u3066\u307f\u308b\u3002<\/p>\n

Socket.IO\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h2>\n

\/home\/dalomo\/node-chat\u3063\u3066\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u4f5c\u3063\u3066<\/p>\n

$ npm init<\/pre>\n
\u3063\u3066\u3059\u308b\u3068\u8272\u3005\u805e\u304b\u308c\u308b\u306e\u3067<\/p>\n
{\r\n\"name\": \"node-chat\",\r\n\"version\": \"1.0.0\",\r\n\"description\": \"\",\r\n\"main\": \"app.js\",\r\n\"scripts\": {\r\n\"test\": \"echo \\\"Error: no test specified\\\" && exit 1\"\r\n},\r\n\"author\": \"dalomo\",\r\n\"license\": \"ISC\"\r\n}<\/pre>\n
\u3053\u3093\u306a\u611f\u3058\u306b\u3057\u305f(\u3088\u304f\u5206\u304b\u3063\u3066\u306a\u3044)\u3002\u305d\u3057\u305f\u3089<\/p>\n
$ npm install socket.io\r\n$ npm install express<\/pre>\n
\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3002express\u306e\u65b9\u3082\u5fc5\u8981\u307f\u305f\u3044\u3002<\/p>\n
express\u3092\u5229\u7528\u3057\u305fHelloWorld<\/h2>\n
\u516c\u5f0f\u306e\u6d41\u308c\u304c\u3053\u3046\u3060\u304b\u3089\u307e\u305a\u3053\u308c\u3092\u3084\u308b\u3067\u3054\u3056\u308b\u3002\u30d5\u30a9\u30eb\u30c0\u5185\u306b<\/p>\n
$ vi app.js<\/pre>\n
\u3067<\/p>\n
var<\/span> app = require<\/span>('express'<\/span>)();<\/span>\r\nvar<\/span> http = require<\/span>('http'<\/span>).createServer(app);<\/span>\r\n\r\napp.get('\/'<\/span>, (req, res<\/span>) =><\/span> {<\/span>\r\n  res.send('<h1>Hello world<\/h1>'<\/span>);<\/span>\r\n});<\/span>\r\n\r\nhttp.listen(4000<\/span>, () =><\/span> {<\/span>\r\n  console<\/span>.log('listening on *:4000'<\/span>);<\/span>\r\n});<\/span><\/pre>\n
3000\u756a\u306f\u4f7f\u7528\u4e2d\u306a\u306e\u30674000\u756a\u306b\u5909\u3048\u3066\u307f\u305f\u3002<\/p>\n
\u81ea\u5206\u306e\u5834\u5408\u3001\u524d\u8ff0\u306e\u74b0\u5883\u304c\u3042\u308b\u306e\u3067\/etc\/nginx\/conf.d\/reverse_proxy.conf\u306b<\/del><\/p>\n
 location \/node-chat\/ {\r\nproxy_pass http:\/\/127.0.0.1:4000;<\/del>\r\nproxy_redirect off;\r\nproxy_set_header Host $host;\r\nproxy_set_header X-Real-IP $remote_addr;\r\nproxy_set_header X-Forwarded-Host $host;\r\nproxy_set_header X-Forwarded-Server $host;\r\nproxy_set_header X-Forwarded-Proto $scheme;\r\nproxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;\r\n}<\/del><\/pre>\n
\u3092\u8ffd\u8a18\u3002<\/del><\/p>\n
\u3053\u308c\u3058\u3083\u30c0\u30e1\u3060\u3063\u305f\u307f\u305f\u3044\u3002<\/p>\n
 <\/p>\n
\u307e\u305f\u3001\u30c7\u30fc\u30e2\u30f3\u5316\u306e\u305f\u3081\u306b\/etc\/systemd\/system\u4e0b\u306bnode-chat.service\u3092\u4f5c\u308a<\/p>\n
[Unit]\r\nDescription=node-chat\r\nAfter=network.target\r\n\r\n[Service]\r\nType=simple\r\nExecStart=\/usr\/bin\/node \/home\/dalomo\/node-chat\/app.js\r\nRestart=always\r\nWorkingDirectory=\/home\/dalomo\/node-chat\r\n\r\n[Install]\r\nWantedBy=multi-user.target<\/pre>\n
\u3068\u8a18\u8f09\u3057\u305f\u3002\u305d\u3093\u3067<\/p>\n
$ systemctl daemon-reload\r\n$ systemctl start node-chat\r\n$ systemctl status node-chat\r\n\u25cf node-chat.service - node-chat\r\nLoaded: loaded (\/etc\/systemd\/system\/node-chat.service; disabled; vendor preset: disabled)\r\nActive: active (running) since Sat 2020-12-05 15:39:28 JST; 8s ago\r\nMain PID: 13123 (node)\r\nCGroup: \/system.slice\/node-chat.service\r\nmq13123 \/usr\/bin\/node \/home\/dalomo\/node-chat\/app.js\r\n\r\nDec 05 15:39:28 1scp2bi4 systemd[1]: Started node-chat.\r\nDec 05 15:39:28 1scp2bi4 node[13123]: listening on *:4000<\/pre>\n
\u3046\u3080\u3002\u3058\u3083\u3042http:\/\/dalomo.net\/node-chat\/\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u307e\u3059\u3068<\/p>\n
\"\"<\/a><\/p>\n
\u3042\u308c\u2026\uff1f\u3044\u304b\u3093\u3001\u3053\u3053\u3067\u8e93\u304f\u306e\u306f\u3044\u304b\u3093\u305e\u3002<\/p>\n
https:\/\/stackoverflow.com\/questions\/60368255\/cannot-get-chatroom<\/a><\/p>\n
\u3053\u3053\u898b\u308b\u3068\u30eb\u30fc\u30c8\u306e\u8a2d\u5b9a\u304c\u9055\u3046\u3063\u307d\u3044\uff01app.js\u3092<\/p>\n
app.get('\/'<\/span>, (req, res<\/span>) =><\/span> {<\/span>\r\n\u2193\r\napp.get('\/node-chat\/'<\/span>, (req, res<\/span>) =><\/span> {<\/span><\/pre>\n
\u306b\u5909\u3048\u3066restart\u307f\u308b\u3068<\/p>\n
\"\"<\/a><\/p>\n
\u3067\u304d\u305f\u30fc\uff01\u3042\u3076\u306d\u30fc\u3002<\/p>\n
\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074HTML\u3092\u4f5c\u6210<\/h2>\n
app.js\u306e\u5185\u5bb9\u3092<\/p>\n
app.get('\/node-chat\/', (req, res) => {\r\n  res.sendFile(__dirname + '\/index.html');\r\n});<\/pre>\n
\u3053\u3046\u5909\u66f4\u3002__dirname\u3063\u3066\u3044\u3046\u306e\u306fapp.js\u306e\u30d1\u30b9\u3092\u3068\u3063\u3066\u304d\u3066\u304f\u308c\u308b\u3002\u3053\u3046\u3059\u308b\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u4f5c\u6210\u3057\u305findex.html\u3092\u8fd4\u3059\u3088\u30fc\u3063\u3066\u306a\u308b\u3002\u3067\u3001HTML\u306f\u4e38\u30d1\u30af\u308b(\u30bf\u30a4\u30c8\u30eb\u3060\u3051\u5909\u3048\u305f^^)\u3002<\/p>\n
<!doctype html<\/span>><\/span><\/span>\r\n<html<\/span>><\/span><\/span>\r\n  <head<\/span>><\/span><\/span>\r\n    <title<\/span>><\/span>node-chat<\/title<\/span>><\/span><\/span>\r\n    <style<\/span>><\/span><\/span>\r\n      * { margin<\/span>: 0<\/span>; padding<\/span>: 0<\/span>; box-sizing<\/span>: border-box; }<\/span><\/span>\r\n      body<\/span> { font<\/span>: 13px<\/span> Helvetica, Arial; }<\/span><\/span>\r\n      form<\/span> { background<\/span>: #000<\/span>; padding<\/span>: 3px<\/span>; position<\/span>: fixed; bottom<\/span>: 0<\/span>; width<\/span>: 100%<\/span>; }<\/span><\/span>\r\n      form<\/span> input<\/span> { border<\/span>: 0<\/span>; padding<\/span>: 10px<\/span>; width<\/span>: 90%<\/span>; margin-right<\/span>: 0.5%<\/span>; }<\/span><\/span>\r\n      form<\/span> button<\/span> { width<\/span>: 9%<\/span>; background<\/span>: rgb<\/span>(130<\/span>, 224<\/span>, 255<\/span>); border<\/span>: none; padding<\/span>: 10px<\/span>; }<\/span><\/span>\r\n      #messages<\/span> { list-style-type<\/span>: none; margin<\/span>: 0<\/span>; padding<\/span>: 0<\/span>; }<\/span><\/span>\r\n      #messages<\/span> li<\/span> { padding<\/span>: 5px<\/span> 10px<\/span>; }<\/span><\/span>\r\n      #messages<\/span> li<\/span>:nth-child(odd)<\/span> { background<\/span>: #eee<\/span>; }<\/span><\/span>\r\n    <\/style<\/span>><\/span><\/span>\r\n  <\/head<\/span>><\/span><\/span>\r\n  <body<\/span>><\/span><\/span>\r\n    <ul<\/span> id<\/span>=\"messages\"<\/span>><\/span><\/ul<\/span>><\/span><\/span>\r\n    <form<\/span> action<\/span>=\"\"<\/span>><\/span><\/span>\r\n      <input<\/span> id<\/span>=\"m\"<\/span> autocomplete<\/span>=\"off\"<\/span> \/><\/span><button<\/span>><\/span>Send<\/button<\/span>><\/span><\/span>\r\n    <\/form<\/span>><\/span><\/span>\r\n  <\/body<\/span>><\/span><\/span>\r\n<\/html<\/span>><\/span><\/span><\/pre>\n
\u305d\u3046\u3059\u3063\u3068<\/p>\n
\"\"<\/a><\/p>\n
\u3053\u3046\u306a\u3063\u305f\u3002CSS\u5168\u7136\u308f\u304b\u3089\u306a\u3044\u306e\u3067\u3001\u306a\u3093\u3067\u3053\u3046\u306a\u308b\u306e\u304b\u5206\u304b\u3093\u306a\u3044\u3002<\/p>\n
Socket.IO\u306e\u51e6\u7406\u3092\u5b9f\u88c5<\/h2>\n
\u63a5\u7d9a\u78ba\u8a8d<\/h3>\n
\u3053\u308c\u3082\u3081\u3061\u3083\u3081\u3061\u3083\u30b3\u30d4\u30da\u3067\u3042\u308b\u3002app.js\u306b<\/p>\n
var io = require('socket.io')(http);<\/pre>\n
\u3068<\/p>\n
io.on('connection'<\/span>, (socket<\/span>) =><\/span> {<\/span>\r\n  console<\/span>.log('a user connected'<\/span>);<\/span>\r\n});<\/span><\/pre>\n
\u3092\u8ffd\u8a18\u3002index.html\u306e<\/body>\u306e\u524d\u306b<\/p>\n
<script<\/span> src<\/span>=\"\/socket.io\/socket.io.js\"<\/span>><\/span><\/script<\/span>><\/span><\/span>\r\n<script<\/span>><\/span><\/span>\r\n  var<\/span> socket = io();<\/span><\/span>\r\n<\/script<\/span>><\/span><\/span><\/pre>\n
\u3092\u8ffd\u8a18\u3002\u305d\u3093\u3067\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u308b\u3068\u3001status\u306b\u51fa\u3066\u3053\u306a\u3044\u3002\u306a\u3093\u3067\u3084\u3002<\/p>\n
\u30d6\u30e9\u30a6\u30b6\u5074\u306e\u958b\u767a\u8005\u30c4\u30fc\u30eb\u3092\u958b\u304dconsole\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n
Uncaught SyntaxError: Unexpected token '<'\u00a0 \u00a0 \u00a0 socket.io.js:1<\/pre>\n
\u3068\u306e\u8868\u8a18\u304c\u3042\u308a\u3001socket.io.js:1 \u306eURL\u3092\u78ba\u8a8d\u3057\u3066\u307f\u308b\u3068<\/p>\n
!https:\/\/dalomo.net\/socket.io\/socket.io.js<\/p>\n
\u306b\u884c\u3053\u3046\u3068\u3057\u3066\u3044\u308b\u3088\u3046\u3060\u3063\u305f\u3002\u305d\u3053\u306b\u30fc\u79c1\u306f\u30fc\u3044\u307e\u305b\u3093\u30fc\u3002\u3066\u3044\u3046\u3053\u3068\u306findex.html\u306e<\/p>\n
<script<\/span> src<\/span>=\"\/socket.io\/socket.io.js\"<\/span>><\/span><\/script<\/span>><\/span><\/span><\/pre>\n
\u3053\u3053\u306esrc\u3092\u660e\u793a\u3057\u3066\u3042\u3052\u308c\u3070\u3044\u3044\u306e\u304b\u306a\u30fc\u3068\u601d\u3063\u3066node_modules\/socket.io-client\/dist\/socket.io.js\u306b\u5909\u66f4\u3057\u305f\u3002\u3067\u3082\u4eca\u5ea6\u306f<\/p>\n
net::ERR_ABORTED 404<\/pre>\n
\u3068\u306a\u308b\u3002\u3046\u3080\u3080\u30fc\uff1f<\/p>\n
https:\/\/blog.fkoji.com\/2012\/06300058.html<\/a><\/p>\n
\u3053\u3061\u3089\u8a66\u3057\u3066\u307f\u305f\u308a\u3057\u305f\u3051\u3069\u3046\u307e\u304f\u3044\u304b\u305a\u3002\u8a66\u3057\u306b<\/p>\n
https:\/\/cdnjs.com\/libraries\/socket.io<\/a><\/p>\n
\u306e\u3001package.json\u306b\u8a18\u8f09\u306e\u540c\u30d0\u30fc\u30b8\u30e7\u30f3\u306esocket.io.js\u3092\u6307\u5b9a\u3057\u3066\u307f\u308b\u3068\u3001\u30a8\u30e9\u30fc\u306f\u6d88\u3048\u305f\u3002\u3067\u3082log\u306ba user connected\u3063\u3066\u51fa\u3066\u3053\u306a\u3044\u3002\u306a\u3093\u3067\u3060\u308d\u3002\u305f\u3060\u306a\u3093\u304b\u958b\u767a\u8005\u30c4\u30fc\u30eb\u3067Network\u6b04\u3092\u898b\u3066\u307f\u308b\u3068<\/p>\n