我正在创建一个library,它正在建立套接字连接:
public function __construct(Options $options)
{
$this->responseBuffer = new Response();
$this->connection = stream_socket_client($options->fullSocketAddress());
if (!$this->isAlive($this->connection)) {
throw new DeadSocket();
}
stream_set_timeout($this->connection, $this->timeout);
$this->options = $options;
}
将数据发送到服务器通过send()
方法,如下所示:
public function send(string $xml)
{
try {
fwrite($this->connection, $xml);
} catch (Exception $e) {
$this->options->getLogger()->error(__METHOD__ . '::' . __LINE__ . " fwrite() failed " . $e->getMessage());
return;
}
}
这里的问题是catch
无法捕获PHP注意到的错误,在我看来,这表明连接本身已断开。
万一发生服务器错误,我会得到<stream:error>
(XMPP标准),但是,如果套接字中断或类似这样的超时发生,我将无法捕获:
[2019年5月22日12:35:07 UTC] PHP注意:fwrite():94字节的发送失败,错误码为errno = 110在第52行的... / Socket.php中连接超时
这时候我想知道是否发生错误,以便我可以触发重新连接,但是执行以下任何一项操作似乎都没有帮助:
if (!is_resource($this->connection)) $this->reconnect();
if (!$this->connection) $this->reconnect();
除了检查socket_get_status()
的任何属性之外,因为socket_get_status($this->connection)['timed_out']
可以是true
,即使存在活动连接也是如此。
有没有办法捕捉到这个通知?
还有一种方法可以模拟行为,以便即使连接没有超时也能重现它?
答案 0 :(得分:0)
您可以通过调用error_reporting来设置级别,例如:
error_reporting(E_ERROR | E_WARNING | E_PARSE | E_NOTICE);
或者,您可以使用set_error_handler设置自己的错误处理程序。您也可以在页面上找到示例:
<?php
// error handler function
function myErrorHandler($errno, $errstr, $errfile, $errline)
{
if (!(error_reporting() & $errno)) {
// This error code is not included in error_reporting, so let it fall
// through to the standard PHP error handler
return false;
}
switch ($errno) {
case E_USER_ERROR:
echo "<b>My ERROR</b> [$errno] $errstr<br />\n";
echo " Fatal error on line $errline in file $errfile";
echo ", PHP " . PHP_VERSION . " (" . PHP_OS . ")<br />\n";
echo "Aborting...<br />\n";
exit(1);
break;
case E_USER_WARNING:
echo "<b>My WARNING</b> [$errno] $errstr<br />\n";
break;
case E_USER_NOTICE:
echo "<b>My NOTICE</b> [$errno] $errstr<br />\n";
break;
default:
echo "Unknown error type: [$errno] $errstr<br />\n";
break;
}
/* Don't execute PHP internal error handler */
return true;
}
// function to test the error handling
function scale_by_log($vect, $scale)
{
if (!is_numeric($scale) || $scale <= 0) {
trigger_error("log(x) for x <= 0 is undefined, you used: scale = $scale", E_USER_ERROR);
}
if (!is_array($vect)) {
trigger_error("Incorrect input vector, array of values expected", E_USER_WARNING);
return null;
}
$temp = array();
foreach($vect as $pos => $value) {
if (!is_numeric($value)) {
trigger_error("Value at position $pos is not a number, using 0 (zero)", E_USER_NOTICE);
$value = 0;
}
$temp[$pos] = log($scale) * $value;
}
return $temp;
}
// set to the user defined error handler
$old_error_handler = set_error_handler("myErrorHandler");
// trigger some errors, first define a mixed array with a non-numeric item
echo "vector a\n";
$a = array(2, 3, "foo", 5.5, 43.3, 21.11);
print_r($a);
// now generate second array
echo "----\nvector b - a notice (b = log(PI) * a)\n";
/* Value at position $pos is not a number, using 0 (zero) */
$b = scale_by_log($a, M_PI);
print_r($b);
// this is trouble, we pass a string instead of an array
echo "----\nvector c - a warning\n";
/* Incorrect input vector, array of values expected */
$c = scale_by_log("not array", 2.3);
var_dump($c); // NULL
// this is a critical error, log of zero or negative number is undefined
echo "----\nvector d - fatal error\n";
/* log(x) for x <= 0 is undefined, you used: scale = $scale" */
$d = scale_by_log($a, -2.5);
var_dump($d); // Never reached
?>