# 搭建Echo服務器
---
[TOC=2,3]
所有講解網絡通信編程的書籍都會最先講解如何編寫一個Echo服務器,本書也不例外。本章將講解如何快速編寫一個基于Swoole擴展的Echo服務器。
## 服務端 Server
創建一個`Server.php`文件并輸入如下內容:
```php
// Server
class Server
{
private $serv;
public function __construct() {
$this->serv = new swoole_server("0.0.0.0", 9501);
$this->serv->set(array(
'worker_num' => 8,
'daemonize' => false,
));
$this->serv->on('Start', array($this, 'onStart'));
$this->serv->on('Connect', array($this, 'onConnect'));
$this->serv->on('Receive', array($this, 'onReceive'));
$this->serv->on('Close', array($this, 'onClose'));
$this->serv->start();
}
public function onStart( $serv ) {
echo "Start\n";
}
public function onConnect( $serv, $fd, $from_id ) {
$serv->send( $fd, "Hello {$fd}!" );
}
public function onReceive( swoole_server $serv, $fd, $from_id, $data ) {
echo "Get Message From Client {$fd}:{$data}\n";
$serv->send($fd, $data);
}
public function onClose( $serv, $fd, $from_id ) {
echo "Client {$fd} close connection\n";
}
}
// 啟動服務器 Start the server
$server = new Server();
```
## 客戶端 Client
創建一個`Client.php`文件并輸入如下內容:
```php
<?php
class Client
{
private $client;
public function __construct() {
$this->client = new swoole_client(SWOOLE_SOCK_TCP);
}
public function connect() {
if( !$this->client->connect("127.0.0.1", 9501 , 1) ) {
echo "Error: {$this->client->errMsg}[{$this->client->errCode}]\n";
}
fwrite(STDOUT, "請輸入消息 Please input msg:");
$msg = trim(fgets(STDIN));
$this->client->send( $msg );
$message = $this->client->recv();
echo "Get Message From Server:{$message}\n";
}
}
$client = new Client();
$client->connect();
```
## 運行 Run it!
在Terminal下執行命令`php Server.php`即可啟動服務器,在另一個Terminal下執行`php Client.php`,輸入要發送的內容,即可發送消息到服務器,并收到來自服務器的消息。
- swoole簡介
- swoole功能概述
- 序章
- 開發必讀
- 1 環境搭建
- 1.1 環境搭建
- 1.2 搭建Echo服務器
- 2 初識Swoole
- 2.1 Worker進程
- 2.2 TaskWorker進程
- 2.3 Timer定時器
- 2.4 Process進程
- 2.5 Table內存表
- 2.6 多端口監聽
- 2.7 sendfile文件支持
- 2.8 SSL支持
- 2.9 熱重啟
- 2.10 http_server
- 附錄*server配置
- 附錄*server函數
- 附錄*server屬性
- 附錄*server回調函數
- 附錄*server高級特性
- 心跳檢測
- 3 Swoole協議
- 3.1 EOF協議
- 3.2 固定包頭協議
- 3.3 Http協議
- 3.4 WebSocket協議
- 3.5 MTQQ協議
- 內置http_server
- 內置websocket_server
- Swoole\Redis\Server
- 4 Swoole異步IO
- 4.1 AsyncIO
- 異步文件系統IO
- swoole_async_readfile
- swoole_async_writefile
- swoole_async_read
- swoole_async_write
- 5 swoole異步客戶端
- ws_client
- http_client
- mysql_client
- redis_client
- tcp_client
- http2_client
- 6 swoole協程
- Swoole\Coroutine\Http\Client
- Swoole\Coroutine\MySQL
- Swoole\Coroutine\Redis
- Coroutine\PostgreSQL
- Swoole\Coroutine\Client
- Swoole\Coroutine\Socket
- Swoole\Coroutine\Channel
- Coroutine
- Swoole\Coroutine::create
- Swoole\Coroutine::resume
- Swoole\Coroutine::suspend
- Swoole\Coroutine::sleep
- Coroutine::getaddrinfo
- Coroutine::gethostbyname
- swoole_async_dns_lookup_coro
- Swoole\Coroutine::getuid
- getDefer
- setDefer
- recv
- Coroutine::stats
- Coroutine::fread
- Coroutine::fget
- Coroutine::fwrite
- Coroutine::readFIle
- Coroutine::writeFIle
- Coroutine::exec
- 7 swoole_process
- process::construct
- process::start
- process::name
- process::signal
- process::setaffinity
- process::exit
- process::kill
- process::daemon
- process->exec
- process::wait
- process::alarm
- 8 swoole定時器
- swoole_timer_tick
- swoole_timer_after
- swoole_timer_clear
- 9 swoole_event
- swoole_event_add
- swoole_event_set
- swoole_event_del
- swoole_event_wait
- swoole_event_defer
- swoole_event_write
- swoole_event_exit
- swoole提供的function
- 常見問題
- 客戶端鏈接失敗原因
- 如何設置進程數
- 如何實現異步任務
- 如何選擇swoole三種模式
- php中哪些函數是阻塞的
- 是否可以共用1個redis或mysql連接
- 如何在回調函數中訪問外部的變量
- 為什么不要send完后立即close
- 不同的Server程序實例間如何通信
- MySQL的連接池、異步、斷線重連
- 在php-fpm或apache中使用swoole
- 學習Swoole需要掌握哪些基礎知識
- 在phpinfo中有在php-m中沒有
- 同步阻塞與異步非阻塞選擇
- CURL發送POST請求服務器端超時
- 附錄
- 預定義常量
- 內核參數調優
- php四種回調寫法
- 守護進程程序常用數據結構
- swoole生命周期
- swoole_server中內存管理機制
- 使用jemalloc優化swoole內存分配性能
- Reactor、Worker、Task的關系
- Manager進程
- Swoole的實現
- Reactor線程
- 安裝擴展
- swoole-worker手冊
- swoole相關開源項目
- 寫在后面的話
- 版本更新記錄
- 4.0