send 方法
void AsyncUdpConnection::send(string $data)
执行异步连接操作。此方法会立刻返回。
参数
$data
向服务端发送的数据,数据大小不能超过65507字节(udp单个数据包最大传输大小为65507字节),否则会发送失败。
返回值
无返回值
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秒后启动一个udp客户端,连接1234端口并发送字符串 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){
// 收到服务端返回的数据 hello
echo "recv $data\r\n";
// 关闭连接
$udp_connection->close();
};
$udp_connection->connect();
}, null, false);
};
$worker->onMessage = function(UdpConnection $connection, $data)
{
// 收到AsyncUdpConnection客户端发来的数据,返回字符串 hello
$connection->send("hello");
};
Worker::runAll();
执行后打印类似:
recv hello