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[bharper <1446633@xxxxxxxxxxxxxxxxxx>]

I have a slight clarification.  In my testing with php56u and your test
code, I do get a time out:

$ time php ssl_bug.php 
Connected to ssl://imap.ikmj.com:993
* OK ikmj-serwer.home.pl IdeaImapServer v0.80 ready
1 CAPABILITY
2 LOGOUT

real	0m30.737s
user	0m0.013s
sys	0m0.009s

I assume you will reach the time out if you wait long enough.

I have also discovered that your test script works fine when using a
different IMAP server:

$ php ssl_bug_different_server.php 
Connected to ssl://<redacted>:993
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN] Dovecot ready.
1 CAPABILITY
* CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE IDLE AUTH=PLAIN
2 LOGOUT

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https://bugs.launchpad.net/bugs/1446633

Title:
  SSL problem with PHP 5.6.7&.8 and Horde_Imap_Client

Status in IUS Community Project:
  New

Bug description:
  I created a simple example code reproducing the problem Horde or
  EGroupware:

  <?php
  $timeout = 30;
  $context = array(
      'ssl' => array(
          'verify_peer' => false,
          'verify_peer_name' => false
      )
  );
  if (($fp = stream_socket_client(
          $conn='ssl://imap.ikmj.com:993',
          $errno,
          $errstr,
          $timeout,
          STREAM_CLIENT_CONNECT,
          stream_context_create($context)
      )))
  {
      echo "Connected to $conn\n";
      echo fgets($fp);

      echo "1 CAPABILITY\n";
      fwrite($fp, "1 CAPABILITY\n");
      echo fgets($fp);
      echo "2 LOGOUT\n";
      fwrite($fp, "2 LOGOUT\n");
  }
  else var_dump($errno, $errstr);

  Running it on various IUS PHP versions gives following results:
  [root@lighttpd ~]# php -v
  PHP 5.4.39 (cli) (built: Mar 20 2015 08:10:43)
  Copyright (c) 1997-2014 The PHP Group
  Zend Engine v2.4.0, Copyright (c) 1998-2014 Zend Technologies
  [root@lighttpd ~]# php imaps_php56.php
  Connected to ssl://imap.ikmj.com:993
  * OK ikmj-serwer.home.pl IdeaImapServer v0.80 ready
  1 CAPABILITY
  * CAPABILITY IMAP4rev1 LITERAL+ CHILDREN I18NLEVEL=1 IDLE SORT UIDPLUS
  UNSELECT XLIST AUTH=PLAIN AUTH=LOGIN
  2 LOGOUT

  [root@fpm60 ~]# php -v
  PHP 5.5.23 (cli) (built: Mar 20 2015 08:29:54)
  Copyright (c) 1997-2015 The PHP Group
  Zend Engine v2.5.0, Copyright (c) 1998-2015 Zend Technologies
      with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2015, by Zend
  Technologies
  [root@fpm60 ~]# php imaps_php56.php
  Connected to ssl://imap.ikmj.com:993
  * OK ikmj-serwer.home.pl IdeaImapServer v0.80 ready
  1 CAPABILITY
  * CAPABILITY IMAP4rev1 LITERAL+ CHILDREN I18NLEVEL=1 IDLE SORT UIDPLUS
  UNSELECT XLIST AUTH=PLAIN AUTH=LOGIN
  2 LOGOUT

  [dev@coreos-control ~]$ php -v
  PHP 5.6.7 (cli) (built: Mar 25 2015 13:08:46) 
  Copyright (c) 1997-2015 The PHP Group
  Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
      with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2015, by Zend Technologies
  [dev@coreos-control ~]$ php imaps_php56.php 
  Connected to ssl://imap.ikmj.com:993
  * OK ikmj-serwer.home.pl IdeaImapServer v0.80 ready
  1 CAPABILITY
  ^C
  Hangs until I hit ^C.

  [dev@coreos-control ~]$ php -v
  PHP 5.6.8 (cli) (built: Apr 16 2015 20:02:05) 
  Copyright (c) 1997-2015 The PHP Group
  Zend Engine v2.6.0, Copyright (c) 1998-2015 Zend Technologies
      with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2015, by Zend Technologies
  [dev@coreos-control ~]$ php imaps_php56.php 
  Connected to ssl://imap.ikmj.com:993
  * OK ikmj-serwer.home.pl IdeaImapServer v0.80 ready
  1 CAPABILITY
  ^C
  Hangs until I hit ^C.

  While I first suspected a further case of SSL timeout bug we had in 5.5 and 5.6 a couple of packages back, I also talked to Remi Collet who reported the previous problem to php internals ML and maintains PHP in Fedora. 
  Hi could NOT reproduce it on various PHP & Fedora versions:

  $ php56 /tmp/foo.php
  Running PHP 5.6.8
  Connected to ssl://imap.ikmj.com:993
  * OK ikmj-serwer.home.pl IdeaImapServer v0.80 ready
  1 CAPABILITY
  * CAPABILITY IMAP4rev1 LITERAL+ CHILDREN I18NLEVEL=1 IDLE SORT UIDPLUS
  UNSELECT XLIST AUTH=PLAIN AUTH=LOGIN
  2 LOGOUT

  Hi just run more tests
  - Fedora 21 and openssl 1.0.1k
  - RHEL-6 and RHEL-7, openssl 1.0.1e
  - PHP 5.4.40, 5.5.24, 5.6.8 and 7.0.0-dev (20150418)

  So it appears to me that there must be some difference in patches or
  spec file or IUS and Fedora which causes the problem with IUS PHP 5.6
  packages.

  Ralf

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