[Asterisk-code-review] res/res http media cache: Add an HTTP(S) backend for the cor... (asterisk[master])

[Joshua Colp]

Hello Kevin Harwell, Anonymous Coward #1000019, George Joseph,

I'd like you to reexamine a change.  Please visit

    https://gerrit.asterisk.org/1890

to look at the new patch set (#6).

Change subject: res/res_http_media_cache: Add an HTTP(S) backend for the core media cache
......................................................................

res/res_http_media_cache: Add an HTTP(S) backend for the core media cache

This patch adds a bucket backend for the core media cache that interfaces to a
remote HTTP server. When a media item is requested in the cache, the cache will
query its bucket backends to see if they can provide the media item. If that
media item has a scheme of HTTP or HTTPS, this backend will be invoked.

The backend provides callbacks for the following:
 * create - this will always retrieve the URI specified by the provided
            bucket_file, and store it in the file specified by the object.
 * retrieve - this will pull the URI specified and store it in a temporary
              file. It is then up to the media cache to move/rename this file
              if desired.
 * delete - destroys the file associated with the bucket_file.
 * stale - if the bucket_file has expired, based on received HTTP headers from
           the remote server, or if the ETag on the server no longer matches
           the ETag stored on the bucket_file, the resource is determined to be
           stale.

Note that the backend respects the ETag, Expires, and Cache-Control headers
provided by the HTTP server it is querying.

ASTERISK-25654

Change-Id: Ie201c2b34cafc0c90a7ee18d7c8359afaccc5250
---
M CHANGES
M res/res_curl.c
A res/res_http_media_cache.c
3 files changed, 454 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/90/1890/6
-- 
To view, visit https://gerrit.asterisk.org/1890
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ie201c2b34cafc0c90a7ee18d7c8359afaccc5250
Gerrit-PatchSet: 6
Gerrit-Project: asterisk
Gerrit-Branch: master
Gerrit-Owner: Matt Jordan <mjordan at digium.com>
Gerrit-Reviewer: Anonymous Coward #1000019
Gerrit-Reviewer: George Joseph <george.joseph at fairview5.com>
Gerrit-Reviewer: Joshua Colp <jcolp at digium.com>
Gerrit-Reviewer: Kevin Harwell <kharwell at digium.com>