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Now cases when decompression failed due to internal error
and when a client sent corrupted data are distinguished.
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The function just calls ngx_http_spdy_state_headers_skip() most of the time.
There was also an attempt of optimization to stop parsing if the client already
closed connection, but it looks strange and unfinished anyway.
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Previously, the frame wasn't sent anyway (and had a wrong status code).
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Now ngx_http_spdy_state_protocol_error() is able to close stream,
so there is no need in a separate call for this.
Also fixed zero status code in logs for some cases.
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Now ngx_http_spdy_construct_request_line() doesn't try to finalize request
in case of failed memory allocation.
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The 7022564a9e0e changeset made ineffective workaround from 2464ccebdb52
to avoid NULL pointer dereference with "if". It is now restored by
moving the u->ssl_name initialization after the check.
Found by Coverity (CID 1210408).
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Previous code failed to properly restore cf->conf_file in case of
ngx_close_file() errors, potentially resulting in double free of
cf->conf_file->buffer->start.
Found by Coverity (CID 1087507).
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Found by Coverity (CID 1087509).
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While managing big caches it is possible that expiring old cache items
in ngx_http_file_cache_expire() will take a while. Added a check for
ngx_quit / ngx_terminate to make sure cache manager can be terminated
while in ngx_http_file_cache_expire().
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The ngx_http_proxy_rewrite_cookie() function expects the value of the
"Set-Cookie" header to be null-terminated, and for headers obtained
from proxied server it is usually true.
Now the ngx_http_proxy_rewrite() function preserves the null character
while rewriting headers.
This fixes accessing memory outside of rewritten value if both the
"proxy_cookie_path" and "proxy_cookie_domain" directives are used in
the same location.
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X509_check_host() can't handle non null-terminated names with zero length,
so make sure to fail before calling it.
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There's a race condition between closing a stream by one endpoint
and sending a WINDOW_UPDATE frame by another. So it would be better
to just skip such frames for unknown streams, like is already done
for the DATA frames.
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Just a merge of proxy_ssl_name, proxy_ssl_verify commits into uwsgi module,
code is identical.
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These directives allow to switch on Server Name Indication (SNI) while
connecting to upstream servers.
By default, proxy_ssl_server_name is currently off (that is, no SNI) and
proxy_ssl_name is set to a host used in the proxy_pass directive.
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The SSL_CTX_set_cipher_list() may fail if there are no valid ciphers
specified in proxy_ssl_ciphers / uwsgi_ssl_ciphers, resulting in
SSL context leak.
In theory, ngx_pool_cleanup_add() may fail too, but this case is
intentionally left out for now as it's almost impossible and proper fix
will require changes to http ssl and mail ssl code as well.
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The parameter value specifies a condition under which the request is logged.
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This should prevent attempts of using pointer before it was checked, since
all modern compilers are able to spot access to uninitialized variable.
No functional changes.
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Previously, an empty frame object was created for an output chain that contains
only sync or flush empty buffers. But since 39d7eef2e332 every DATA frame has
the flush flag set on its last buffer, so there's no need any more in additional
flush buffers in the output queue and they can be skipped.
Note that such flush frames caused an incorrect $body_bytes_sent value.
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The SPDY draft 2 specification requires that if an endpoint receives a
control frame for a type it does not recognize, it must ignore the frame.
But the 3 and 3.1 drafts don't seem to declare any behavior for such case.
Then sticking with the previous draft in this matter looks to be right.
But previously, only 8 least significant bits of the type field were
parsed while the rest of 16 bits of the field were checked against zero.
Though there are no known frame types bigger than 255, this resulted in
inconsistency in handling of such frames: they were not recognized as
valid frames at all, and the connection was closed.
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There's no more need in a separate indicator of frame completeness
after d74889fbf06d.
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Following a24f88eff684, now the case when the FIN flag is set in SYN_STREAM
is also covered.
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In a worker process shm_zone->data was set to NULL instead of a proper value
extracted from shared memory.
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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 ngx_cacheline_size may be too low on some platforms, resulting
in unexpected hash build problems (as no collisions are tolerated due
to low bucket_size, and max_size isn't big enough to build a hash without
collisions). These problems aren't fatal anymore but nevertheless
need to be addressed.
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Previously, maximum size of a hash table built was (max_size - 1).
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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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The "ngx_quit" may be reset by the worker thread before it's seen
by a ngx_cache_manager_thread(), resulting in an infinite loop. Make
sure to test ngx_exiting as well.
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This brings Cygwin compilation in line with other case-insensitive
systems (notably win32 and OS X) where one can force case sensitivity
using -DNGX_HAVE_CASELESS_FILESYSTEM=0.
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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 SPDY/3.1 specification requires that the server must respond with
a 400 "Bad request" error if the sum of the data frame payload lengths
does not equal the size of the Content-Length header.
This also fixes "zero size buf in output" alert, that might be triggered
if client sends a greater than zero Content-Length header and closes
stream using the FIN flag with an empty request body.
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There are a few cases in ngx_http_spdy_state_read_data() related to error
handling when ngx_http_spdy_state_skip() might be called with an inconsistent
state between *pos and sc->length, that leads to violation of frame layout
parsing and resuted in corruption of spdy connection.
Based on a patch by Xiaochen Wang.
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