This implements the HTTP only-if-cached mode, allowing the client to prevent triggering a download from the origin.

This is envisioned to be used in the case where pulling from the origin is expensive and the client may want to decide to go to another cache first.

This is based on top of #1953 - to be reviewed after that work is committed.

You can view, comment on, or merge this pull request online at:

https://github.com/xrootd/xrootd/pull/1954

Commit Summary

1e20fbd Add helper class for parsing cache-control header
b0c6baa Add initial `cache-control` support to PFC
e63f575 Add support for the cache-control header
b8f58b5 Implement the HTTP cache control `only if cached` behavior.

File Changes

(12 files)

M src/XrdHttp/XrdHttpProtocol.cc (4)
M src/XrdHttp/XrdHttpReq.cc (16)
M src/XrdHttp/XrdHttpReq.hh (2)
A src/XrdOuc/XrdOucCacheDirective.cc (85)
A src/XrdOuc/XrdOucCacheDirective.hh (82)
M src/XrdPfc/XrdPfc.cc (22)
M src/XrdPfc/XrdPfcFile.cc (17)
M src/XrdPfc/XrdPfcFile.hh (6)
M src/XrdPfc/XrdPfcIOFile.cc (4)
M src/XrdPfc/XrdPfcInfo.cc (5)
M src/XrdPfc/XrdPfcInfo.hh (7)
M src/XrdUtils.cmake (1)

Patch Links:

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