Tim Burke 748b29ef80 Make If-None-Match:* work properly with 0-byte PUTs ...

When PUTting an object with `If-None-Match: *`, we rely 100-continue
support: the proxy checks the responses from all object-servers, and if
any of them respond 412, it closes down the connections. When there's
actual data for the object, this ensures that even nodes that *don't*
respond 412 will hit a ChunkReadTimeout and abort the PUT.

However, if the client does a PUT with a Content-Length of 0, that would
get sent all the way to the object server, which had all the information
it needed to respond 201. After replication, the PUT propagates to the
other nodes and the old object is lost, despite the client receiving a
412 indicating the operation failed.

Now, when PUTting a zero-byte object, switch to a chunked transfer so
the object-server still gets a ChunkReadTimeout.

Change-Id: Ie88e41aca2d59246c3134d743c1531c8e996f9e4

2018-02-26 13:12:44 +00:00

2.8 KiB

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