获取套接字错误字符串时异步连接失败 [英] get socket error string when async connect fails

问题描述

任何人知道，如果可能获取一些错误信息（类似于C的getsockopt SO_ERROR）如果一个异步连接像下面的失败
BTW：我不是使用套接字扩展事业流提供了一个SSL包装

anybody knows if its possible to retrieve some error info (like getsockopt SO_ERROR in C) if an async connect like the following fails btw: im not using the socket extension cause streams provide an ssl wrapper

<?php
$ctx = stream_context_create();
stream_context_set_params($ctx, array("notification" => "stream_notification_callback"));
$destination = "tcp://92.247.12.242:8081";
$socket = stream_socket_client($destination, $errno, $errstr,
                                         10, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT, $ctx);a
// plain socket
var_dump($socket);
// no error as expected
var_dump($errno);
var_dump($errstr);

stream_set_blocking($socket, false);

/* Prepare the read array */
$read   = array($socket);
$write  = array($socket);
$except = NULL;
if (false === ($num_changed_streams = stream_select($read, $write, $except, 10))) {
    var_dump("select failed?");
    /* Error handling */
} elseif ($num_changed_streams > 0) {

    /* At least on one of the streams something interesting happened */
    var_dump("event");
    // read fails, so the connect fails but why?
    $result = stream_socket_recvfrom($socket, 1024);
    var_dump($result);
    // no error again
    var_dump($errno);
    var_dump($errstr);
    // nothing interesting
    var_dump(stream_get_meta_data($socket));
}
// wont get called
function stream_notification_callback($notification_code, $severity, $message, $message_code, $bytes_transferred, $bytes_max) {
    $args = func_get_args();
    var_dump($args);
}

THX

推荐答案

我在描述了同样的问题。我发现有点变通办法的：

I'm having the same issue as described. I have found a bit of a workaround:

我在流类包装我的每一个流，并设置超时属性。之前我调用connect，我产生时发生了超时的时间戳。然后我在这就要求 stream_select（）。

I wrap each of my 'streams' in a Stream class and set a timeout property. Before I call connect, I generate a timestamp of when the timeout should occur. I then have a loop in a Manager class which calls stream_select().

成功的连接都放在 $写阵列。我有一个调用 $＆于流的GT循环底部另一个呼叫; checkTimeout（）。内有一个 stream_select（） 0组要求 tv_sec 和 tv_usec 。如果$这个 - >连接不中 $出现写，我认为它已经超时。

Successful connections are placed in the $write array. I have another call at the bottom of the loop that calls $stream->checkTimeout(). Within that there is a stream_select() call with 0 set for tv_sec and tv_usec. If $this->conn doesn't appear within $write, I assume it has timed out.

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