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swoole 第6次课-1再画瓢:机器人案例及多端口监听

机器人案例，多端口监听

继续第5次课的最后一个案例

1知识补充：多端口监听

11）.多端口监听的实现

class\062\listen\tcpServer.php

<?php
//创建Server对象，监听 0.0.0.0:9505 端口
$server_m = new Swoole\Server('0.0.0.0', 9505);

//监听连接进入事件
$server_m->on('Connect', function ($server, $fd) {
echo "Client: Connect.\n";
});

//监听数据接收事件
$server_m->on('Receive', function ($server, $fd, $from_id, $data) {
$server->send($fd, "Server: " . $data);
});

//监听连接关闭事件
$server_m->on('Close', function ($server, $fd) {
echo "Client: Close.\n";
});

/**************************多端口监听 start ********************************/

//返回port对象
$port1 = $server_m->listen("127.0.0.1", 9501, SWOOLE_SOCK_TCP);
/*$port2 = $server->listen("127.0.0.1", 9502, SWOOLE_SOCK_UDP);
$port3 = $server->listen("127.0.0.1", 9503, SWOOLE_SOCK_TCP | SWOOLE_SSL);*/

//设置每个port的回调函数
$port1->on('connect', function ($serv, $fd){
echo "Client:Connect.\n";
});

$port1->on('receive', function ($serv, $fd, $from_id, $data) {
$serv->send($fd, 'Swoole: '.$data);
$serv->close($fd);
});

$port1->on('close', function ($serv, $fd) {
echo "Client: Close.\n";
});

/*$port2->on('packet', function ($serv, $data, $addr) {
    var_dump($data, $addr);
});*/


/**************************多端口监听 end ********************************/


//启动服务器
$server_m->start();

运行方法

打开两个shell，都进入对应目录，一个运行tcpServer.php，一个netstat -nalp | grep 950

attachments-2020-12-eVbDo51H5fd1636a180c0.jpg


12）多端口客户端的连接： 主服务的连接及作为监听服务的连接

服务器端：上述服务端class\062\listen\tcpServer.php，改造如下

<?php
//创建Server对象，监听 0.0.0.0:9505 端口
$server_m = new Swoole\Server('0.0.0.0', 9505);

//监听连接进入事件
$server_m->on('Connect', function ($server, $fd) {
echo "Client-{$fd}: Connect to m-server.\n";  //连接到$server_m的信息
});

//监听数据接收事件
$server_m->on('Receive', function ($server, $fd, $from_id, $data) {
$server->send($fd, "m_Server: " . $data); //$server_m发送的信息
});

//监听连接关闭事件
$server_m->on('Close', function ($server, $fd) {
echo "Client-{$fd}: Close.\n";
});

/**************************多端口监听 start ********************************/

//返回port对象
$port1 = $server_m->listen("127.0.0.1", 9501, SWOOLE_SOCK_TCP);


//设置每个port的回调函数
$port1->on('connect', function ($serv, $fd){
echo "Client-{$fd}:Connect to p-server.\n";  //连接到port1 的server的信息
});

$port1->on('receive', function ($serv, $fd, $from_id, $data) {
$serv->send($fd, 'p-Swoole: '.$data); //port1 的server发送的信息
$serv->close($fd);
});

$port1->on('close', function ($serv, $fd) {
echo "Client-{$fd}: Close.\n";
});

/**************************多端口监听 end ********************************/

//启动服务器
$server_m->start();

客户端： class\062\listen\tcpClient.php

<?php
$client = new Swoole\Client(SWOOLE_SOCK_TCP);
if (!$client->connect('192.168.204.168', 9505, -1)) {  //连接到$server_m   $client->connect('127.0.0.1', 9505, -1)这个对内形式也行
//if (!$client->connect('192.168.204.168', 9501, -1)) {  //连接到$port1 这个形式不成功，提示端口已被占用。因为这个端口已经对内作为监听端口，不能用对外形式，只能用对内的形式，如下
//if (!$client->connect('127.0.0.1', 9501, -1)) {  //连接到$port1的server
exit("connect failed. Error: {$client->errCode}\n");
}
$client->send("hello world\n");
echo $client->recv();
$client->close();


运行如下：注意客户端运行时要切换注释

attachments-2020-12-nDe8uJeC5fd1759807af4.png

说明：连接主服务器，客户端连接形式对内对外都可，一般用对外形式$client->connect('192.168.204.168', 9505, -1)。

           连接监听端服务器，客户端只能用对内形式$client->connect('127.0.0.1', 9501, -1)，不能用对外形式$client->connect('192.168.204.168', 9501, -1)。

13）关闭服务

服务器端：上述服务端class\062\listen\tcpServer.php，改造为class\062\listen\tcpServerClose.php如下

<?php
//创建Server对象，监听 0.0.0.0:9505 端口
$server_m = new Swoole\Server('0.0.0.0', 9505);

//监听连接进入事件
$server_m->on('Connect', function ($server, $fd) {
echo "Client-{$fd}: Connect to m-server.\n";  //连接到$server_m的信息
});

//监听数据接收事件
$server_m->on('Receive', function ($server, $fd, $from_id, $data) {
$server->send($fd, "m_Server: " . $data); //$server_m发送的信息
});

//监听连接关闭事件
$server_m->on('Close', function ($server, $fd) {
echo "Client-{$fd}: Close.\n";
});

/**************************多端口监听 start ********************************/

//返回port 对象
$port1 = $server_m->listen("127.0.0.1", 9501, SWOOLE_SOCK_TCP);


//设置每个port的回调函数
$port1->on('connect', function ($serv, $fd){
echo "Client-{$fd}:Connect to p-server.\n";  //连接到port1 的server的信息
});

$port1->on('receive', function ($serv, $fd, $from_id, $data) use($server_m) {
$server_m->shutdown();  //引入主服务并关闭
$serv->send($fd, 'p-Swoole: '.$data); //port1 的server发送的信息
$serv->close($fd);
});

$port1->on('close', function ($serv, $fd) {
echo "Client-{$fd}: Close.\n";
});

/**************************多端口监听 end ********************************/

//启动服务器
$server_m->start();

客户端不变，class\062\listen\tcpClient.php，以$client->connect('127.0.0.1',9501, -1)连接到$port1的server

运行

attachments-2020-12-Go4R3Qhx5fd186ac6aae1.jpg


综上总结：多端口监听知识点

                 $port=$server->listen($ip, $port, $protocol); //返回一个对内监听的服务，这个服务客户端只能用内部形式访问

$server->shutdown();

            

2.机器人案例

功能：机器识别人 =》把信息传递给服务端 =》 服务端接收到这个信息之后又会返回给机器

要求：实现这个通信过程

提示：机器人是一个服务 ，后端也是个服务；机器利用客户端向后端发送信息，后端会回复 -》也可以以客户端的方式回复

           利用tcpserver与client


21）初步实现服务器端的通信：借助动态创建的客户端

        实现思路

       attachments-2020-12-5tCbsnCP5fd1fdb68ca6b.png

目录结构图

attachments-2020-12-D4SC1RQO5fd1fe6b3d6d6.png

后台服务：class\062\jhymachine\admin\AdminServer.php

<?php
use \Swoole\Server;
class AdminServer{
private $port='9501';
    private $host='0.0.0.0';
    private $server;

    public function __construct()
    {
echo swoole_get_local_ip()['ens33'].":".$this->port."\n";
$this->server=new Server($this->host,$this->port);
$this->onEvent();
}
public function onEvent(){
$this->server->on("connect",[$this,'connect']);
$this->server->on("receive",[$this,'receive']);
$this->server->on("close",[$this,'close']);
}
public function connect($server, $fd){
echo "Client_{$fd}:Connect to AdminServer.\n";
}
public function receive($server, $fd, $from_id, $data){
echo "AdminServer服务，接收到机器服务转发自外界的数据\n";
var_dump($data);
$server->send($fd, 'data of AdminServer back : '.$data); //admin 的server发送的信息
        //$server->close($fd);*/
}

public function close($server,$fd)
    {
echo "Client_{$fd}:Connect of AdminServer is Close.\n";
}

public function start()
    {
echo "AdminServer is start\n";
$this->server->start();
}

}

(new AdminServer())->start();

 机器服务的监听服务：class\062\jhymachine\machine\Listen.php   

<?php

use \Swoole\Server;

class Listen
{
private $port = '9556';
    private $host = '127.0.0.1';
    private $server;
    private $listen;

    public function __construct($server)
    {
$this->server=$server;
        echo  "监听:".$this->host. ":" . $this->port . "\n";
//多端口监听
$this->listen=$server->listen($this->host,$this->port,SWOOLE_SOCK_TCP);
$this->onEvent();
}

public function onEvent()
    {
$this->listen->on("connect", [$this, 'connect']);
$this->listen->on("receive", [$this, 'receive']);
$this->listen->on("close", [$this, 'close']);
}

public function connect($server, $fd)
    {
echo "Client_{$fd}:Connect to ListenServer.\n";
}

public function receive($server, $fd, $from_id, $data)
    {
echo '接收到机器的数据';
var_dump($data);
/*$server->send($fd, 'ListenServer: '.$data); //admin 的server发送的信息
        $server->close($fd);*/
}

public function close($server, $fd)
    {
echo "Client_{$fd}:Connect of ListenServer is Close.\n";
}

}

 

机器服务：注意初始化创建监听对象，接收到外界客户端消息时动态创建新客户端，转化给后台，然后接收到后台返回的信息，再在接收消息方法里返回给外界

class\062\jhymachine\machine\MachineServer.php

<?php
require 'Listen.php';
use \Swoole\Server;

class MachineServer
{
private $port = '9505';
    private $host = '0.0.0.0';
    private $server;

    public function __construct()
    {
echo swoole_get_local_ip()['ens33'] . ":" . $this->port . "\n";
$this->server = new Server($this->host, $this->port);
//多端口监听
(new Listen($this->server)) ;
$this->onEvent();
}

public function onEvent()
    {
$this->server->on("connect", [$this, 'connect']);
$this->server->on("receive", [$this, 'receive']);
$this->server->on("close", [$this, 'close']);
}

public function connect($server, $fd)
    {
echo "Client_{$fd}:Connect to MachineServer.\n";
}

public function receive($server, $fd, $from_id, $data)
    {
echo "MachineServer服务，接收到外界客户端的数据\n";
var_dump($data);
//转发给后台服务器 AdminServer
$return=$this->sendToAdmin('192.168.204.168',9501,$data);
var_dump($return);
//回信息给客户端
$server->send($fd, 'MachineServer转为自 '.$return); //admin 的server发送的信息
        //$server->close($fd);
}

public function sendToAdmin($ip,$port,$data)
    {
$client = new \Swoole\Client(SWOOLE_SOCK_TCP);
        if (!$client->connect($ip, $port, -1)) {  //连接到AdminServer
exit("connect failed. Error: {$client->errCode}\n");
}
$client->send($data);
$return = $client->recv();  //AdminServer返回的信息
$client->close();
        return $return;
}

public function close($server, $fd)
    {
echo "Client_{$fd}:Connect of MachineServer is Close.\n";
}

public function start()
    {
echo "MachineServer is start\n";
$this->server->start();
}

}

(new MachineServer())->start();

外界客户端 class\062\jhymachine\tcpClient.php

<?php
$client = new Swoole\Client(SWOOLE_SOCK_TCP);
//if (!$client->connect('192.168.204.168', 9501, -1)) {  //连接到AdminServer
if (!$client->connect('192.168.204.168',9505, -1)) {  //连接到MachineServer
exit("connect failed. Error: {$client->errCode}\n");
}
$client->send("hello world\n");
echo $client->recv();
$client->close();

运行方法，打开三个xshell，如下运行，对比结果

attachments-2020-12-dcHpZvUi5fd1f958510d8.png

至此，服务间的通信功能基本实现 

注意： listen后面会用到，这里只是提前贴了代码了


未完待续

  • 发表于 2020-12-10 07:47
  • 阅读 ( 569 )

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