Laravel 使用 Swoole 打造 WebSocket 服務

• 由於Swoole不支援Windows，以下操作皆是在linux(Ubuntu 22.04)系統環境下運作的。

Requirement

需先確認系統有安裝PHP與Nginx，本文是在此基礎環境下運作的。

$ sudo apt update

$ sudo apt upgrade

• 安裝Nginx:

$ sudo apt install nginx

• 安裝PHP:

$ sudo apt install php8.1-fpm php8.1 php-dev -y

$ php -v

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安裝PHP swoole擴展

$ sudo pecl install swoole

• 若找不到pecl指令，需先安裝:

$ sudo apt install php-pear

enable swoole:

1. 打開php.ini:

$ sudo nano /etc/php/8.1/cli/php.ini

• 可使用這個指令查看php.ini在哪:

$ php --ini

2. 在php.ini 檔案最後面加上:

extension=swoole.so

3. Restart php-fpm生效:

$ sudo service php8.1-fpm restart

查看swoole是否安裝成功:

$ php -m

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安裝composer

• 若無composer，需先安裝:

$ sudo apt install curl unzip

$ sudo apt install php-curl

$ curl -sS https://getcomposer.org/installer -o composer-setup.php

$ sudo php composer-setup.php --install-dir=/usr/local/bin --filename=composer

$ composer -V

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安裝Laravel Installer

• 使用Composer安裝Laravel Installer:

$ composer global require "laravel/installer"

• 將 composer bin folder 加入環境變數，這樣才能用laravel指令來建立專案:

$ nano $HOME/.bashrc

• 在最下面加入:

$ export PATH="$PATH:$HOME/.config/composer/vendor/bin"

• Reload .bashrc file:

$ source $HOME/.bashrc

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建立Laravel新專案

• 接著就能用laravel installer來建立Laravel新專案:

$ laravel new swoole_test

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安裝laravel-swoole

• 接著在swoole_test專案目錄下，安裝laraveltw/laravel-swoole:

$ composer require swooletw/laravel-swoole

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撰寫Swoole websocket後端程式

• 建立swoole命令:

$ php artisan make:command Swoole

會在app\Console\Command路徑下建立Swoole.php:

將code改成這樣:

https://gist.github.com/snailsmall612/15534af7cba04d19e06d0e78f67558bf

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撰寫Swoole websocket前端程式

https://gist.github.com/snailsmall612/8b1997c3a9b3458e79511385c6aafcd2

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啟動websocket server

$ php artisan swoole start

接著當client連線時，瀏覽器與server訊息如下圖:

• fd: client的唯一識別ID

本筆記參考:

1. https://www.jianshu.com/p/b5ee9f72fcd1
2. https://learnku.com/articles/4633/with-supervisor-use-swoole-to-create-a-websocket-server-in-laravel
3. https://learnku.com/articles/47250
4. https://iter01.com/520130.html
5. https://www.swoole.com/
6. https://blog.albert-chen.com/php-with-swoole/
7. https://www.cloudbooklet.com/how-to-install-lemp-stack-nginx-mysql-php-on-ubuntu-22-04/
8. https://www.how2shout.com/linux/how-to-install-composer-on-ubuntu-22-04-20-04-lts/
9. https://stackoverflow.com/questions/61395786/i-get-laravel-command-not-found-on-ubuntu-20-04
10. https://wiki.swoole.com/#/environment