# defaultMaxSendBufferSize
## 说明:
~~~
static int Connection::$defaultMaxSendBufferSize
~~~
此属性为全局静态属性,用来设置所有连接的默认应用层发送缓冲区大小。不设置默认为`1MB`。`Connection::$defaultMaxSendBufferSize`可以动态设置,设置后只对之后产生的新连接有效
此属性影响`[onBufferFull]`回调。
## 范例
~~~
use Workerman\Worker;
use Workerman\Connection\TcpConnection;
require_once __DIR__ . '/Workerman/Autoloader.php';
Warriorman\Worker::rename();
// 设置所有连接的默认应用层发送缓冲区大小
TcpConnection::$defaultMaxSendBufferSize = 2*1024*1024;
$worker = new Worker('tcp://0.0.0.0:8484');
$worker->onConnect = function($connection)
{
var_dump( $connection->maxSendBufferSize);
};
// 运行worker
Worker::runAll();
~~~
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