Req #72733 [Opn]: It would be nice to have something like getaddrinfo.

From: Date: Wed, 10 Aug 2016 11:44:23 +0000
Subject: Req #72733 [Opn]: It would be nice to have something like getaddrinfo.
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-203152@lists.php.net to get a copy of this message
Edit report at https://bugs.php.net/bug.php?id=72733&edit=1

 ID:                 72733
 User updated by:    email at davekok dot nl
 Reported by:        email at davekok dot nl
 Summary:            It would be nice to have something like getaddrinfo.
 Status:             Open
 Type:               Feature/Change Request
 Package:            Sockets related
 Operating System:   Any
 PHP Version:        7.0.9
 Block user comment: N
 Private report:     N

 New Comment:

If at all possible I still like the array approach. As this allows the PHP programmer access to the
information within the addrinfo struct. Could socket_create, socket_bind and socket_listen not be
modified to also allow an array? I have no problem with having to also specify the socket resource
separately. Hiding this in a addrinfo resource seems wrong somehow.

If a resource is used instead of an array. Information functions to retrieve the information within
would be very much appreciated.


Previous Comments:
------------------------------------------------------------------------
[2016-08-10 11:35:26] email at davekok dot nl

I think it would be useful if the socket api remains as much as possible similar to how it is known
in other languages. So the second where socket_bind and socket_listen are used to receive a addrinfo
resource would be my preference.

Is there any reason to add a socket_addrinfo_close function. Can this not be garbage collected?

------------------------------------------------------------------------
[2016-08-10 03:11:58] dave at mudsite dot com

After playing around a bit I think the resource means is preferable.  I'm sure discussions on
the merits of both will be raised though RFC process[1].  I feel the resource method is superior
because it's the actual sockaddr structure behind it.  So if you do a
getaddrinfo("127.0.0.1", "ssh", NULL), the sockaddr structure already has into
it the correct port to use.  Whereas the addrinfo structure doesn't contain the port
you're looking for.  Your example uses $this->address["ai_addr"],
however, ai_addr isn't a port number like you're using it.  It's the sockaddr
structure.  So I envision the typical array-return to look weird like this:

<?php
$infos = socket_getaddrinfo('127.0.0.1', 'ssh', array(
    'ai_family' => AF_INET,
    'ai_socktype' => SOCK_STREAM
));
$info = reset($infos);
$sock = socket_create(
    $address["ai_family"],
    $address["ai_socktype"],
    $address["ai_protocol"]
);
socket_bind($sock, 22);


Whereas a resource based implementation could be:<?php
$infos = socket_getaddrinfo('127.0.0.1', 'ssh', array(
    'ai_family' => AF_INET,
    'ai_socktype' => SOCK_STREAM
));
$info = reset($infos);
$sock = socket_addrinfo_bind($info);


But I digress.

[1] - Draft RFC: https://wiki.php.net/rfc/socket_getaddrinfo

------------------------------------------------------------------------
[2016-08-08 15:41:09] email at davekok dot nl

I would indeed prefer an array to be returned rather then a resource with a additional functions.
Otherwise great work!!

------------------------------------------------------------------------
[2016-08-07 19:41:00] dave at mudsite dot com

I took a stab at
this(https://github.com/bp1222/php-src/commit/785284cdbc8a46d7c1b07567bb0d06d348112684). 
implementing a 

array socket_getaddrinfo(string $node, mixed $service[, array $hints])

This attempt returns an array of resources, each resource being a C addrinfo struct.  To use, I just
made a socket_addrinfo_connect and socket_addrinfo_bind to accept the resource to connect/bind.

Although in your desired example, you'd want to just have an array of info from addrinfo
returned, and you call create&connect/bind with returned variables.

Not sure if one would be preferable over the other, I would assume implementing your use would be
better as it wouldn't require resources & would be a couple less functions declared.

------------------------------------------------------------------------
[2016-08-07 07:19:16] email at davekok dot nl

Oh perhaps it would have been a better example if the socket type hint would also by in the
constructor.

------------------------------------------------------------------------


The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at

    https://bugs.php.net/bug.php?id=72733


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Edit this bug report at https://bugs.php.net/bug.php?id=72733&edit=1


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