Swoole实现基于WebSocket的群聊私聊
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本文属于入门级文章,大佬们可以绕过啦。如题,本文会实现一个基于Swoole的websocket聊天室(可以群聊,也可以私聊,具体还需要看数据结构的设计)。
搭建Swoole环境
通过包管理工具
# 安装依赖包
$ sudo apt-get install libpcre3 libpcre3-dev
# 安装swoole
$ pecl install swoole
# 添加extension拓展
$ echo extension=swoole.so > /etc/php5/cli/conf.d/swoole.ini
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源码编译安装
源码安装需要保证系统中有完善的工具包,如gcc,然后就是固定的套路。
./configure
sudo make
sudo make install
这里同样不例外,大致步骤如下:
# 下载解压源码
wget https://github.com/swoole/swoole-src/archive/v1.9.1-stable.tar.gz
tar -xzvf v1.9.1-stable.tar.gz
cd swoole-src-1.9.1-stable
# 编译安装
phpize # phpize命令需要保证安装了php7-dev,具体是php几还是需要看自己安装的PHP版本
./configure
sudo make
sudo make install
# 添加配置信息,具体路径按自己的情况而定
vi /etc/php/php.ini
// 在末尾加入,路径按make install生成的为准
extension=/usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/swoole.so
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上述两种方式各有利弊,选择合适自己的即可。
实现聊天室
在Swoole的wiki文档中对此有很详细的介绍,具体可以参考https://wiki.swoole.com/wiki/page/397.html 这里就不过多废话了。下面主要聊聊我眼中的最简单的聊天室的雏形:用户可以选择公聊或者私聊,然后服务器实现具体的业务逻辑。大致的数据结构应该是这个样子的:
# 公聊结构
{
"chattype":"publicchat",
"chatto":"0",
"chatmsg":"具体的聊天逻辑"
}
# 私聊结构
{
"chattype":"privatechat",
"chatto":"2614677",
"chatmsg":"具体的聊天逻辑"
}
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服务器端逻辑
因为只是演示,服务器端做的比较简陋,大题分为两部分:框架(server.php)+具体业务(dispatcher.php)
server.php
<?php
/**
* websocket服务器端程序
* */
//require "一个dispatcher,用来将处理转发业务实现群组或者私聊";
require "/var/www/html/swoole/wschat/dispatcher.php";
$server = new swoole_websocket_server("0.0.0.0", 22223);
$server->on("open", function($server, $request) {
echo "client {$request->fd} connected, remote address: {$request->server[‘remote_addr‘]}:{$request->server[‘remote_port‘]}
";
$welcomemsg = "Welcome {$request->fd} joined this chat room.";
// TODO 这里可以看出设计有问题,构造方法里面应该是通用的逻辑,而不是针对某一个方法有效
//$dispatcher = new Dispatcher("");
//$dispatcher->sendPublicChat($server, $welcomemsg);
foreach($server->connections as $key => $fd) {
$server->push($fd, $welcomemsg);
}
});
$server->on("message", function($server, $frame) {
$dispatcher = new Dispatcher($frame);
$chatdata = $dispatcher->parseChatData();
$isprivatechat = $dispatcher->isPrivateChat();
$fromid = $dispatcher->getSenderId();
if($isprivatechat) {
$toid = $dispatcher->getReceiverId();
$msg = "【{$fromid}】对【{$toid}】说:{$chatdata[‘chatmsg‘]}";
$dispatcher->sendPrivateChat($server, $toid, $msg);
}else{
$msg = "【{$fromid}】对大家说:{$chatdata[‘chatmsg‘]}";
$dispatcher->sendPublicChat($server, $msg);
}
/*
$chatmsg = json_decode($frame->data, true);
if($chatmsg[‘chattype‘] == "publicchat") {
$usermsg = "Client {$frame->fd} 说:".$frame->data;
foreach($server->connections as $key => $fd) {
$server->push($fd, $usermsg);
}
}else if($chatmsg[‘chattype‘] == "privatechat") {
$usermsg = "Client{$frame->fd} 对 Client{$chatmsg[‘chatto‘]} 说: {$chatmsg[‘chatmsg‘]}.";
$server->push(intval($chatmsg[‘chatto‘]), $usermsg);
}
*/
});
$server->on("close", function($server, $fd) {
$goodbyemsg = "Client {$fd} leave this chat room.";
//$dispatcher = new Dispatcher("");
//$dispatcher->sendPublicChat($server, $goodbyemsg);
foreach($server->connections as $key => $clientfd) {
$server->push($clientfd, $goodbyemsg);
}
});
$server->start();
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dispatcher.php
<?php
/**
* 用于实现公聊私聊的特定发送服务。
* */
class Dispatcher{
const CHAT_TYPE_PUBLIC = "publicchat";
const CHAT_TYPE_PRIVATE = "privatechat";
public function __construct($frame) {
$this->frame = $frame;
var_dump($this->frame);
$this->clientid = intval($this->frame->fd);
//$this->remote_addr = strval($this->frame->server[‘remote_addr‘]);
//$this->remote_port = intval($this->frame->server[‘remote_port‘]);
}
public function parseChatData() {
$framedata = $this->frame->data;
$ret = array(
"chattype" => self::CHAT_TYPE_PUBLIC,
"chatto" => 0,
"chatmsg" => "",
);
if($framedata) {
$ret = json_decode($framedata, true);
}
$this->chatdata = $ret;
return $ret;
}
public function getSenderId() {
return $this->clientid;
}
public function getReceiverId() {
return intval($this->chatdata[‘chatto‘]);
}
public function isPrivateChat() {
$chatdata = $this->parseChatData();
return $chatdata[‘chattype‘] == self::CHAT_TYPE_PUBLIC ? false : true;
}
public function isPublicChat() {
return $this->chatdata[‘chattype‘] == self::CHAT_TYPE_PRIVATE ? false : true;
}
public function sendPrivateChat($server, $toid, $msg) {
if(empty($msg)){
return;
}
foreach($server->connections as $key => $fd) {
if($toid == $fd || $this->clientid == $fd) {
$server->push($fd, $msg);
}
}
}
public function sendPublicChat($server, $msg) {
if(empty($msg)) {
return;
}
foreach($server->connections as $key => $fd) {
$server->push($fd, $msg);
}
}
}
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客户端
对websocket客户端来说严格来讲没多大的限制,通常我们会在移动设备或者网页上进行客户端的逻辑实现。这里拿网页版的来简单演示下:
wsclient.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>websocket client</title>
<style type="text/css">
.container {
border: #ccc solid 1px;
}
.up {
width: 100%;
height: 200px;
}
.down {
width: 100%;
height: 100px;
}
</style>
</head>
<body>
<div class="container">
<div class="up" id="chatrecord">
</div>
<hr>
<div class="down">
聊天类型:
<select id="chattype">
<option value="publicchat">公聊</option>
<option value="privatechat">私聊</option>
</select>
对
<select id="chatto">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
说:<input type="text" id="chatmsg" placeholder="随便来一发吧~">
<input type="button" id="btnsend" value="发送" onclick="sendMsg()">
</div>
</div>
</body>
<script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
<script type="text/javascript">
var ws;
$(function(){
connect();
});
function echo(id, msg) {
console.log(msg);
$(id).append("<p>"+msg+"</p>");
}
function connect() {
ws = new WebSocket("ws://47.104.64.90:22223");
//ws.onopen = function(event) {echo("#chatrecord", event);}
//ws.onclose = function(event) {echo("#chatrecord", event);}
//ws.onerror = function(event) {echo("#chatrecord", event);}
ws.onmessage = function(event) {
echo("#chatrecord", event.data);
}
}
function sendMsg() {
var chatmsg = $("#chatmsg").val();
var chattype = $("#chattype").val();
var chatto = $("#chatto").val();
var msg = JSON.stringify({"chattype":chattype, "chatto":chatto, "chatmsg":chatmsg});
if(msg != "" && chatmsg !=""){
ws.send(msg);
$("#chatmsg").val("");
}
}
</script>
</html>
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端口配置
由于阿里云端口的限制,这里nginx对外暴露的端口进行了更改。具体配置如下:
swoole.nginx.conf
server{
listen 22222;
server_name localhost;
index index.php;
root /var/www/html/swoole;
location / {
try_files $uri /index.php$is_args$args;
}
error_log /var/log/nginx/swoole_error.log;
access_log /var/log/nginx/swoole_access.log;
location ~ .php$ {
root /var/www/html/swoole;
index index.php index.html index.htm;
fastcgi_split_path_info ^(.+.php)(/.+)$;
fastcgi_pass unix:/run/php/php7.0-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}
}
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演示
演示之前,确保服务器端程序已经开启:
php server.php
运行完命令之后,没有输出就说明一切顺利。可以开启客户端进行测试了。
-
部署测试
-
公聊私聊测试
总结
Swoole实现WebSocket服务,其实蛮清晰的。关键还是在于如何去设计,有时候业务需求是一个不错的导向,否则越到后面代码会越臃肿,变得有“坏味道”。相比上次使用Java的Netty框架实现的websocket聊天室(https://blog.csdn.net/marksinoberg/article/details/80337779)。这二者都属于把业务逻辑从框架中剥开的实现,所以开发者可以将更多地精力放到业务逻辑上来。从而开发出更健壮的服务。
最近写的东西少的多了,不是因为懒得写,而是越写越不敢写了。面临大学毕业,正式进入社会了。很多东西不能再像之前一样随意,没有什么深度。而深刻严谨的知识没有时间的沉淀以及实践的锤炼是学不来的。不是说看到了几个名词就学会了某项技术,虚心向大佬们学习才是最切实的方法。
再分享一下我老师大神的人工智能教程吧。零基础!通俗易懂!风趣幽默!还带黄段子!希望你也加入到我们人工智能的队伍中来!https://blog.csdn.net/jiangjunshow
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