Hello!

After update from -dev15, the following stats listener:

listen stats9 :30009
    mode http
    stats enable
    stats uri /
    stats show-node
    stats show-legends

returns 503/Service unavailable.

With -dev15 it shows statistics page.


On 24.12.2012, at 19:51, Willy Tarreau <w...@1wt.eu> wrote:

> Hi all,
> 
> Here comes 1.5-dev16. Thanks to the amazing work Sander Klein and John
> Rood have done at Picturae ICT ( http://picturae.com/ ) we could finally
> spot the freeze bug after one week of restless digging ! This bug was
> amazingly hard to reproduce in general and would only affect POST requests
> under certain circumstances that I never could reproduce despite many
> efforts. It is likely that other users were affected too but did not
> notice it because end users did not complain (I'm thinking about webmail
> and file sharing environments for example).
> 
> During this week of code review and testing, around 10 other minor to medium
> bugs related to the polling changes could be fixed.
> 
> Another nasty bug was fixed on SSL. It happens that OpenSSL maintains a
> global error stack that must constantly be flushed (surely they never heard
> how errno works). The result is that some SSL errors could cause another SSL
> session to break as a side effect of this error. This issue was reported by
> J. Maurice (wiz technologies) who first encountered it when playing with the
> tests on ssllabs.com.
> 
> Another bug present since 1.4 concerns the premature close of the response
> when the server responds before the end of a POST upload. This happens when
> the server responds with a redirect or with a 401, sometimes the client would
> not get the response. This has been fixed.
> 
> Krzysztof Rutecki reported some issues on client certificate checks, because
> the check for the presence of the certificate applies to the connection and
> not just to the session. So this does not match upon session resumption. Thus
> another ssl_c_used ACL was added to check for such sessions.
> 
> Among the other nice additions, it is now possible to log the result of any
> sample fetch method using %[]. This allows to log SSL certificates for 
> example.
> And similarly, passing such information to HTTP headers was implemented too,
> as "http-request add-header" and "http-request set-header", using the same
> format as the logs. This also becomes useful for combining headers !
> 
> Some people have been asking for logging the amount of uploaded data from the
> client to the server, so this is now available as the %U log-format tag.
> Some other log-format tags were deprecated and replaced with easier to remind
> ones. The old ones still work but emit a warning suggesting the replacement.
> 
> And last, the stats HTML version was improved to present detailed information
> using hover tips instead of title attributes, allowing multi-line details on
> the page. The result is nicer, more readable and more complete.
> 
> The changelog is short enough to append it here after the usual links :
> 
>    Site index       : http://haproxy.1wt.eu/
>    Sources          : http://haproxy.1wt.eu/download/1.5/src/devel/
>    Changelog        : http://haproxy.1wt.eu/download/1.5/src/CHANGELOG
>    Cyril's HTML doc : 
> http://cbonte.github.com/haproxy-dconv/configuration-1.5.html
> 
> At the moment, nobody broke the latest snapshots, so I think we're getting
> closer to something stable to base future work on.
> 
> Thanks!
> Willy
> 
> ----------
> Changelog from 1.5-dev15 to 1.5-dev16:
>  - BUG/MEDIUM: ssl: Prevent ssl error from affecting other connections.
>  - BUG/MINOR: ssl: error is not reported if it occurs simultaneously with 
> peer close detection.
>  - MINOR: ssl: add fetch and acl "ssl_c_used" to check if current SSL session 
> uses a client certificate.
>  - MINOR: contrib: make the iprange tool grep for addresses
>  - CLEANUP: polling: gcc doesn't always optimize constants away
>  - OPTIM: poll: optimize fd management functions for low register count CPUs
>  - CLEANUP: poll: remove a useless double-check on fdtab[fd].owner
>  - OPTIM: epoll: use a temp variable for intermediary flag computations
>  - OPTIM: epoll: current fd does not count as a new one
>  - BUG/MINOR: poll: the I/O handler was called twice for polled I/Os
>  - MINOR: http: make resp_ver and status ACLs check for the presence of a 
> response
>  - BUG/MEDIUM: stream-interface: fix possible stalls during transfers
>  - BUG/MINOR: stream_interface: don't return when the fd is already set
>  - BUG/MEDIUM: connection: always update connection flags prior to computing 
> polling
>  - CLEANUP: buffer: use buffer_empty() instead of buffer_len()==0
>  - BUG/MAJOR: stream_interface: fix occasional data transfer freezes
>  - BUG/MEDIUM: stream_interface: fix another case where the reader might not 
> be woken up
>  - BUG/MINOR: http: don't abort client connection on premature responses
>  - BUILD: no need to clean up when making git-tar
>  - MINOR: log: add a tag for amount of bytes uploaded from client to server
>  - BUG/MEDIUM: log: fix possible segfault during config parsing
>  - MEDIUM: log: change a few log tokens to make them easier to remember
>  - BUG/MINOR: log: add_to_logformat_list() used the wrong constants
>  - MEDIUM: log-format: make the format parser more robust and more extensible
>  - MINOR: sample: support cast from bool to string
>  - MINOR: samples: add a function to fetch and convert any sample to a string
>  - MINOR: log: add lf_text_len
>  - MEDIUM: log: add the ability to include samples in logs
>  - REORG: stats: massive code reorg and cleanup
>  - REORG: stats: move the HTTP header injection to proto_http
>  - REORG: stats: functions are now HTTP/CLI agnostic
>  - BUG/MINOR: log: fix regression introduced by commit 8a3f52
>  - MINOR: chunks: centralize the trash chunk allocation
>  - MEDIUM: stats: use hover boxes instead of title to report details
>  - MEDIUM: stats: use multi-line tips to display detailed counters
>  - MINOR: tools: simplify the use of the int to ascii macros
>  - MINOR: stats: replace STAT_FMT_CSV with STAT_FMT_HTML
>  - MINOR: http: prepare to support more http-request actions
>  - MINOR: log: make parse_logformat_string() take a const char *
>  - MEDIUM: http: add http-request 'add-header' and 'set-header' to build 
> headers
> ----------
> 
> 


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