Bug #63170 [Opn->Nab]: Creating Socket returns a 'false' stream on local network
Edit report at https://bugs.php.net/bug.php?id=63170&edit=1
ID: 63170
Updated by: mike@php.net
Reported by: keirlavelle1 at hotmail dot co dot uk
Summary: Creating Socket returns a 'false' stream on local
network
-Status: Open
+Status: Not a bug
Type: Bug
Package: Streams related
PHP Version: 5.3.17
Block user comment: N
Private report: N
New Comment:
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php
Previous Comments:
------------------------------------------------------------------------
[2012-09-30 06:32:59] alan dot klestoff at gmail dot com
As we can see in documantation http://php.net/fsockopen
> Warning
> UDP sockets will sometimes appear to have opened without an error,
> even if the remote host is unreachable. The error will only become
> apparent when you read or write data to/from the socket. The reason
> for this is because UDP is a "connectionless" protocol, which means
> that the operating system does not try to establish a link
> for the socket until it actually needs to send or receive data.
------------------------------------------------------------------------
[2012-09-27 10:41:50] keirlavelle1 at hotmail dot co dot uk
Description:
------------
When using fsockopen if the ip address specified for hostname is local and within the subnet mask
range, and UDP is specified as the transport method, the returned handle will var_dump as a resource
of type stream, even if the ip address doesn't exist on the network - indicating a false
positive for some reason.
Test script:
---------------
$socket = fsockopen('UDP://192.168.213.23:12345', $errno, $errstr, 30);
//assuming that subnet mask is 255.255.255.0 - port can be anything
var_dump($socket);
Expected result:
----------------
bool(false);
//possibly e_warning that domain is not valid
Actual result:
--------------
resource(8) of type (stream)
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=63170&edit=1
Thread (3 messages)