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This supersedes PR #35 that I left for civetweb. I'm guessing travis will fail again. This is simplified to be just the "safe" fixes - I'll have further fixes past this that have more complicated issues. |
The final chunk header of size 0 is followed by two crlf pairs. The first ends the chunk header, and is properly digested by civetweb. The 2nd ends the "dummy" datablock after the last chunk header. It must be consumed as well, or else the next request on this connection will fail. This change adds logic to properly digest the 2nd crlf pair. Signed-off-by: Marcus Watts <mwatts@redhat.com>
In some cases, ceph may detect an error that indicates that further use of this connection is doubtful. For instance, mg_read() fails to return expected data, due to a chunk decoding error. In this case, the connection should be closed, but not until after the error is sent. civetweb provides low-level logic to do this (conn->must_close); this commit provides an API for the application to trigger that behavior. Signed-off-by: Marcus Watts <mwatts@redhat.com>
transfer-encoding = chunked vs. content-length encoding is documented in rfc 2616 3.6.1 and rfc 7230 4.1. In both cases, it is documented that if transfer-encoding == 'chunked', then content-length should not be supplied by a client, and must not be processed by a server. The previous code in civetweb allowed content-length to override transfer-encoding=chunked, which is clearly wrong by the standard. This chnage corrects the order of those checks. Signed-off-by: Marcus Watts <mwatts@redhat.com>
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I had left out a commit originally and botched a refactor. I've pushed corrections for both. |
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3 fixes here.
1 content-length vs. transfer-encoding: chunked; according to rfc 2616,
transfer-encoding chunked should supersede content-length. Later rfcs require this be treated as an error - sadly experience has shown s3 clients lag in this respect.
2 eat final crlf after last chunk header. Otherwise, the next request fails.
3 mg_set_must_close, Gives ceph/rgw a way to say this connection is hosed, do not attempt to read another request out of it.
These are all issues from,
https://tracker.ceph.com/issues/45789