### **創建UDP服務器**
*****
<br>
UDP服務器與TCP服務器不同，UDP沒有連接的概念。啟動Server后，客戶端無需Connect，直接可以向Server監聽的9501端口發送數據包。對應的事件為onPacket。
示例：
```
class UdpServer{
private $serv = null;
public function __construct(){
$this->serv = new swoole_server("0.0.0.0",9501,SWOOLE_PROCESS, SWOOLE_SOCK_UDP);
$this->serv->on("Packet",[$this,"onPacket"]);
$this->serv->start();
}
//監聽數據接收事件
public function onPacket($serv, $data, $clientInfo){
$serv->sendto($clientInfo['address'], $clientInfo['port'], "Server ".$data);
var_dump($clientInfo);
}
}
new UdpServer();
```
測試：
```
netcat -u 127.0.0.1 9501
hello
Server: hello
```
- 序章
- 1.環境搭建
- PHP7源碼編譯安裝
- Swoole源碼編譯安裝
- Mysql5.7源碼安裝
- Redis安裝
- 2.搭建Echo服務器
- 3.Server服務器
- 函數列表
- Server::__construct
- Server->set
- Server->on
- Server->start
- Server->send
- WebSocket
- Server->push
- Server->exist
- Server::pack
- Server::unpack
- Server->disconnect
- Server->isEstablished
- 配置選項
- reactor_num
- worker_num
- max_request
- max_conn
- daemonize
- backlog
- log_file
- log_level
- upload_tmp_dir
- http_parse_post
- document_root
- http_compression
- 事件回調函數
- onStart
- onWorkerStart
- onConnect
- onReceive
- onPacket
- onRequest
- 請求Request
- Http\Request->$header
- Http\Request->$server
- Http\Request->$get
- Http\Request->$post
- Http\Request->$cookie
- Http\Request->$files
- Http\Request->rawContent
- Http\Request->getData
- 響應Response
- Http\Response->header
- Http\Response->cookie
- Http\Response->status
- Http\Response->redirect
- Http\Response->write
- Http\Response->sendfile
- Http\Response->end
- Http\Response->detach
- Http\Response::create
- onClose
- onOpen
- onMessage
- 創建服務器
- TCP服務器
- UDP服務器
- HTTP服務器
- WebSocket服務器
- 4.定時器Timer
- 5.進程Process
- Process::__construct
- Process->start
- Process->name
- Process->exec
- Process->write
- Process->read
- Process->setTimeout
- Process->setBlocking
- Process->useQueue
- Process->statQueue
- Process->freeQueue
- Process->push
- Process->pop
- Process->close
- Process->exit
- Process::kill
- Process::wait
- Process::daemon
- Process::signal
- 6.內存Memory
- Table
- Table->__construct
- Table->column
- Table->create
- Table->set
- Table->incr
- Table->decr
- Table->get
- Table->exist
- Table->count
- Table->del
- Channel
- Channel->__construct
- Channel->push
- Channel->pop
- Channel->stats
- 7.協程Coroutine
- Coroutine
- Coroutine::list
- Coroutine::set
- Coroutine::stats
- Coroutine::create
- Coroutine::exist
- Coroutine::getCid
- Coroutine::getContext
- Coroutine::defer
- Coroutine::getBackTrace
- Coroutine::yield
- Coroutine::resume
- Coroutine::fread
- Coroutine::fgets
- Coroutine::fwrite
- Coroutine::sleep
- Coroutine::gethostbyname
- Coroutine::getaddrinfo
- Coroutine::exec
- Coroutine::readFile
- Coroutine::writeFile
- Coroutine::statvfs
- Coroutine::getPcid
- Coroutine\Channel
- Coroutine\Channel->__construct
- Coroutine\Channel->push
- Coroutine\Channel->pop
- Coroutine\Channel->stats
- Coroutine\Channel->close
- Coroutine\Channel->length
- Coroutine\Channel->isEmpty
- Coroutine\Channel->isFull
- Coroutine\Channel->$capacity
- Coroutine\Channel->$errCode
- Coroutine\Client
- Coroutine\Client->connect
- Coroutine\Client->send
- Coroutine\Client->recv
- Coroutine\Client->close
- Coroutine\Client->peek
- Coroutine\Client->set
- Coroutine\Http\Client
- Coroutine\Http\Client->get
- Coroutine\Http\Client->post
- 其他
- 并行和并發的區別
- 堆、棧、隊列