send 方法

void AsyncUdpConnection::send(string $data)

執行異步連接操作。此方法會立刻返回。

參數

$data
向服務端發送的數據，數據大小不能超過65507字節(udp單個數據包最大傳輸大小為65507字節)，否則會發送失敗。

返回值

無返回值

示例

use Workerman\Worker;
use Workerman\Timer;
use Workerman\Connection\AsyncUdpConnection;
use Workerman\Connection\UdpConnection;
require_once __DIR__ . '/vendor/autoload.php';

$worker = new Worker('udp://0.0.0.0:1234');
$worker->onWorkerStart = function(){
    // 1秒後啟動一個udp客戶端，連接1234端口並發送字符串 hi
    Timer::add(1, function(){
        $udp_connection = new AsyncUdpConnection('udp://127.0.0.1:1234');
        $udp_connection->onConnect = function(AsyncUdpConnection $udp_connection){
            $udp_connection->send('hi');
        };
        $udp_connection->onMessage = function(AsyncUdpConnection $udp_connection, $data){
            // 收到服務端返回的數據 hello
            echo "recv $data\r\n";
            // 關閉連接
            $udp_connection->close();
        };
        $udp_connection->connect();
    }, null, false);
};
$worker->onMessage = function(UdpConnection $connection, $data)
{
    // 收到AsyncUdpConnection客戶端發來的數據，返回字符串 hello
    $connection->send("hello");
};
Worker::runAll();             

執行後打印類似:

recv hello