Mosquittoをwebsocket対応にさせ、通信内容をブラウザに表示させます。
brewで環境を観に行くと、いかのような記述が。
$ brew info mosquitto
mosquitto: stable 1.4.14 (bottled)
Message broker implementing the MQTT protocol
https://mosquitto.org/
/usr/local/Cellar/mosquitto/1.4.14_1 (33 files, 630.0KB) *
Poured from bottle on 2017-10-05 at 23:55:29
From: https://github.com/Homebrew/homebrew-core/blob/master/Formula/mosquitto.rb
==> Dependencies
Build: pkg-config ✘, cmake ✘
Required: c-ares ✔, openssl ✔
Recommended: libwebsockets ✔
==> Options
--without-libwebsockets
Build without libwebsockets support
==> Caveats
mosquitto has been installed with a default configuration file.
You can make changes to the configuration by editing:
/usr/local/etc/mosquitto/mosquitto.conf
To have launchd start mosquitto now and restart at login:
brew services start mosquitto
Or, if you don't want/need a background service you can just run:
mosquitto -c /usr/local/etc/mosquitto/mosquitto.confというわけで、編集しに行きます。
後々面倒なので、バックアップを。
$ cp /usr/local/etc/mosquitto/mosquitto.conf /usr/local/etc/mosquitto/mosquitto.conf.bak $ cp /usr/local/etc/mosquitto/mosquitto.conf /usr/local/etc/mosquitto/my_mosquitto.conf
で、こんな感じで編集します。
$ diff /usr/local/etc/mosquitto/my_mosquitto.conf /usr/local/etc/mosquitto/mosquitto.conf.bak 277c277 < listener 1883 --- > #listener 297,299c297 < listener 9090 127.0.0.1 < protocol websockets < --- > #protocol mqtt
フツーに起動するといつも通りですが
$ mosquitto 1508255934: mosquitto version 1.4.14 (build date 2017-09-30 02:42:20+0100) starting 1508255934: Using default config. 1508255934: Opening ipv6 listen socket on port 1883. 1508255934: Opening ipv4 listen socket on port 1883.
"-c"オプションで先程設定してやったファイルを読むと、ちゃんとwebcocketが開きます
$ mosquitto -c /usr/local/etc/mosquitto/my_mosquitto.conf 1508257023: mosquitto version 1.4.14 (build date 2017-09-30 02:42:20+0100) starting 1508257023: Config loaded from /usr/local/etc/mosquitto/my_mosquitto.conf. 1508257023: Opening ipv6 listen socket on port 1883. 1508257023: Opening ipv4 listen socket on port 1883. 1508257023: Opening websockets listen socket on port 9090.
