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If start time is within the track but end time is out of it, error
"end time is out mp4 stts samples" is generated. However it's
better to ignore the error and output the track until its end.
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The flag allows to suppress "ngx_slab_alloc() failed: no memory" messages
from a slab allocator, e.g., if an LRU expiration is used by a consumer
and allocation failures aren't fatal.
The flag is now used in the SSL session cache code, and in the limit_req
module.
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Despite introducing start and end crop operations existing log
messages still mostly refer only to start. Logging is improved
to match both cases.
New debug logging is added to track entry count in atoms after
cropping.
Two format type mismatches are fixed as well.
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When "start" value is equal to a track duration the request
fails with "time is out mp4 stts" like it did before track
duration check was added. Now such tracks are considered
short and skipped.
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The atom may have no data entries after cropping.
This fixes "zero size buf in output" alerts.
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If set, it means that response body is going to be in more than one buffer,
hence only range requests with a single range should be honored.
The flag is now used by mp4 and cacheable upstream responses, thus allowing
range requests of mp4 files with start/end, as well as range processing
on a first request to a not-yet-cached files with proxy_cache.
Notably this makes it possible to play mp4 files (with proxy_cache, or with
mp4 module) on iOS devices, as byte-range support is required by Apple.
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It can now be reused for implementing mp4 end.
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Client address specified in the PROXY protocol header is now
saved in the $proxy_protocol_addr variable and can be used in
the realip module.
This is currently not implemented for mail.
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Additionally, make sure to check for errors from ngx_http_parse_header_line()
call after joining saved parts. There shouldn't be any errors, though
check may help to catch bugs like missing f->split_parts reset.
Reported by Lucas Molas.
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The fix removes useless stsc entry in result mp4.
If start_sample == n then current stsc entry should be skipped
and the result stsc should start with the next entry.
The reason for that is start_sample starts from 0, not 1.
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Previously, upstream's status code was overwritten with
cached response's status code when STALE or REVALIDATED
response was sent to the client.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
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If a proxied response had charset in Content-Type, the
charset was duplicated in a response to client request
with byte ranges.
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Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
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If seek position is within the last track chunk
and that chunk is standalone (stsc entry describes only
this chunk) such seek generates stsc seek error. The
problem is that chunk numbers start with 1, not with 0.
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Mp4 module does not check movie and track durations when reading
file. Instead it generates errors when track metadata is shorter
than seek position. Now such tracks are skipped and movie duration
check is performed at file read stage.
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Mp4 module does not allow seeks after the last key frame. Since
stss atom only contains key frames it's usually shorter than
other track atoms. That leads to stss seek error when seek
position is close to the end of file. The fix outputs empty
stss frame instead of generating error.
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If there is no SSI context in a given request at a given time,
the $date_local and $date_gmt variables used "%s" format, instead
of "%A, %d-%b-%Y %H:%M:%S %Z" documented as the default and used
if there is SSI module context and timefmt wasn't modified using
the "config" SSI command.
While use of these variables outside of the SSI evaluation isn't strictly
valid, previous behaviour is certainly inconsistent, hence the fix.
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This adds support so it's possible to explicitly disable SSL Session
Tickets. In order to have good Forward Secrecy support either the
session ticket key has to be reloaded by using nginx' binary upgrade
process or using an external key file and reloading the configuration.
This directive adds another possibility to have good support by
disabling session tickets altogether.
If session tickets are enabled and the process lives for a long a time,
an attacker can grab the session ticket from the process and use that to
decrypt any traffic that occured during the entire lifetime of the
process.
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This fixes content type set in stub_status and autoindex responses
to be usable in content type checks made by filter modules, such
as charset and sub filters.
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This fixes handling of escaped URIs in X-Accel-Redirect (ticket #316),
SSI (ticket #240), and DAV.
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Conditions for skipping ineligible peers are rewritten to make adding of new
conditions simpler and be in line with the "round_robin" and "least_conn"
modules. No functional changes.
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No functional changes.
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Found by Coverity Scan CID 1135525.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
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Based on patch by Roberto De Ioris.
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Notably this fixes HTTP_IF_MODIFIED_SINCE which was always sent with
cache enabled in fastcgi/scgi/uwsgi after 43ccaf8e8728.
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The following new directives are introduced: proxy_cache_revalidate,
fastcgi_cache_revalidate, scgi_cache_revalidate, uwsgi_cache_revalidate.
Default is off. When set to on, they enable cache revalidation using
conditional requests with If-Modified-Since for expired cache items.
As of now, no attempts are made to merge headers given in a 304 response
during cache revalidation with headers previously stored in a cache item.
Headers in a 304 response are only used to calculate new validity time
of a cache item.
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With previous code, an empty (malformed) response resulted in a request
finalized without sending anything to a client.
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Errors can easily happen due to broken upstream responses, there is no
need to log them at "alert" level.
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This isn't an exceptional condition and normally happens on
first request from a client.
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Much like with other headers, "add_header Cache-Control $value;" no longer
results in anything added to response headers if $value evaluates to an
empty string.
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In order to support key rollover, ssl_session_ticket_key can be defined
multiple times. The first key will be used to issue and resume Session
Tickets, while the rest will be used only to resume them.
ssl_session_ticket_key session_tickets/current.key;
ssl_session_ticket_key session_tickets/prev-1h.key;
ssl_session_ticket_key session_tickets/prev-2h.key;
Please note that nginx supports Session Tickets even without explicit
configuration of the keys and this feature should be only used in setups
where SSL traffic is distributed across multiple nginx servers.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
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Previously arguments starting with "nodelay" were considered valid,
e.g. "limit_req ... nodelayFOO;".
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The macro NGX_HTTP_DAV_COPY_BLOCK is not used since 8101d9101ed8 (0.8.9).
The variable ngx_accept_mutex_lock_file was never used.
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This was missed in 9d59a8eda373 when non-buffered support was added to SCGI
and uwsgi.
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Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
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While there, remove unnecessary check in ngx_mail_ssl_module.
Signed-off-by: Piotr Sikora <piotr@cloudflare.com>
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