(PECL stomp >= 0.1.0)
Stomp::ack -- stomp_ack — Acknowledges consumption of a message
面向对象风格 (method):
过程化风格:
Acknowledges consumption of a message from a subscription using client acknowledgment.
link
仅对过程化样式:由 stomp_connect() 返回的 stomp 连接标识符。
msg
The message/messageId to be acknowledged.
headers
关联数组包含附加的头信息(例如: receipt)。
示例 #1 面向对象风格
<?php
$queue = '/queue/foo';
$msg = 'bar';
try {
$stomp = new Stomp('tcp://localhost:61613');
} catch(StompException $e) {
die('Connection failed: ' . $e->getMessage());
}
$stomp->send($queue, $msg);
$stomp->subscribe($queue);
$frame = $stomp->readFrame();
if ($frame->body === $msg) {
$stomp->ack($frame);
}
$stomp->unsubscribe($queue);
unset($stomp);
?>
示例 #2 过程化风格
<?php
$queue = '/queue/foo';
$msg = 'bar';
$link = stomp_connect('ssl://localhost:61612');
if (!$link) {
die('Connection failed: ' . stomp_connect_error());
}
stomp_begin($link, 't1');
stomp_send($link, $queue, $msg, array('transaction' => 't1'));
stomp_commit($link, 't1');
stomp_subscribe($link, $queue);
$frame = stomp_read_frame($link);
if ($frame['body'] === $msg) {
stomp_ack($link, $frame['headers']['message-id']);
}
stomp_unsubscribe($link, $queue);
stomp_close($link);
?>
注意:
A transaction header may be specified, indicating that the message acknowledgment should be part of the named transaction.
Stomp is inherently asynchronous. Synchronous communication can be implemented adding a receipt header. This will cause methods to not return anything until the server has acknowledged receipt of the message or until read timeout was reached.