curl multiplexing problem with some curl versions

[mattfarina]

Architecturally, there is a pluggable transport layer and out of the box there is an implementation to use the built in PHP methods and a second one that uses curl.

The curl transport layer does connection pooling and reuse. So, when you connect to an endpoint it keeps reusing the connection rather than renegotiate it each time. This provides for some nice performance improvements in the network layer.

Some recent versions of curl (e.g., on the lastest mac and ubuntu) and Windows are now having trouble with this setup.

We could repair this or look into using Guzzle to help. We just need to make sure we keep the connection pooling.

[mattfarina (mattfarina)]

Implementing https://blueprints.launchpad.net/openstack-sdk-php/+spec/guzzle-transport should fix this bug and I'm working on it now.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/86137
Committed: https://git.openstack.org/cgit/stackforge/openstack-sdk-php/commit/?id=948eb89ba80d4babf8e1b5188a05b3d43b9a2451
Submitter: Jenkins
Branch: master

commit 948eb89ba80d4babf8e1b5188a05b3d43b9a2451
Author: Matt Farina <email address hidden>
Date: Tue Apr 8 14:16:47 2014 -0400

    Migrating the transport layer to use the proposed FIG PSR for http
    messages and to use Guzzle 4 as the default transport layer.

    implements blueprint guzzle-transport
    Closes-Bug: 1277535

    Change-Id: I287587b75f42bb48e945335a7b734cadaedc684f