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This feature allows one to specify blocks of code that are called when certain
lifecycle events occur. A user configures a "hooks" property on the app
configuration that points to a script. This script will be evaluated on boot
and should contain blocks of code that will be called on specific events.
An example of configuration:
{
"type": "ruby",
"processes": 2,
"threads": 2,
"user": "vagrant",
"group": "vagrant",
"script": "config.ru",
"hooks": "hooks.rb",
"working_directory": "/home/vagrant/unit/rbhooks",
"environment": {
"GEM_HOME": "/home/vagrant/.ruby"
}
}
An example of a valid "hooks.rb" file follows:
File.write("./hooks.#{Process.pid}", "hooks evaluated")
on_worker_boot do
File.write("./worker_boot.#{Process.pid}", "worker booted")
end
on_thread_boot do
File.write("./thread_boot.#{Process.pid}.#{Thread.current.object_id}",
"thread booted")
end
on_thread_shutdown do
File.write("./thread_shutdown.#{Process.pid}.#{Thread.current.object_id}",
"thread shutdown")
end
on_worker_shutdown do
File.write("./worker_shutdown.#{Process.pid}", "worker shutdown")
end
This closes issue #535 on GitHub.
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When the textual representation of an IPv6 nxt_sockaddr_t was being
generated, a crash would occur if the address had a full IPv6 form:
f607:7403:1e4b:6c66:33b2:843f:2517:da27
This was caused by a variable that tracks the location of a
collapsed group ("::") that was not set to a sane default. When
the address was generated, a group would be inserted when
it was not necessary, thus causing an overflow.
This closes #481 issue on GitHub.
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In rare cases, when the destination process had finished running but no
notification of this was received yet, send could fail with an error, and the
send message structure with file descriptors could leak.
The leakage was periodically reproduced by respawn tests on FreeBSD 12.
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Because of the incorrect 'last' field assignment, multiple listeners with
a TLS certificate did not initialize properly, which caused a router crash
while establishing a connection.
Test with multiple TLS listeners added.
The issue was introduced in the c548e46fe516 commit.
This closes #561 issue on GitHub.
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To perform various configuration operations on SSL_CTX, OpenSSL provides
SSL_CONF_cmd(). Specifically, to configure ciphers for a listener,
"CipherString" and "Ciphersuites" file commands are used:
https://www.openssl.org/docs/man1.1.1/man3/SSL_CONF_cmd.html
This feature can be configured in the "tls/conf_commands" section.
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A crash was caused by an incorrect timer handler nxt_h1p_idle_timeout() if
SSL_shutdown() returned SSL_ERROR_WANT_READ/SSL_ERROR_WANT_WRITE.
The flag SSL_RECEIVED_SHUTDOWN is used to avoid getting SSL_ERROR_WANT_READ, so
the server won't wait for a close notification from a client.
For SSL_ERROR_WANT_WRITE, a correct timer handler is set up.
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Ruby 3.0 deprecated rb_cData with the intention to remove it in release 3.1.
This commit changes references of rb_cData to rb_cObject. This was done so we
can support distributions that package Ruby 3.0, such as Fedora 34.
We also need to call rb_undef_alloc_func because we're no longer deriving from
rb_cData. This prevents unnecessary allocations.
See:
https://docs.ruby-lang.org/en/3.0.0/doc/extension_rdoc.html
"It is recommended that klass derives from a special class called Data
(rb_cData) but not from Object or other ordinal classes. If it doesn't,
you have to call rb_undef_alloc_func(klass)."
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Also added stubs for Server.address()
This was done to prevent crashes in some popular frameworks like express
Supports both CommonJS and the new ES Modules system syntax e.g:
app.js:
const http = require('http')
app.mjs:
import http from "http"
Usage on Node 14.16.x and higher:
{
"type": "external",
"processes": {"spare": 0},
"working_directory": '/project',
"executable": "/usr/bin/env",
"arguments": [
"node",
"--loader",
"unit-http/require_shim.mjs"
"--require",
"unit-http/require_shim",
"app.js"
]
}
Usage on Node 14.15.x and lower:
{
"type": "external",
"processes": {"spare": 0},
"working_directory": '/project',
"executable": "/usr/bin/env",
"arguments": [
"node",
"--require",
"unit-http/require_shim",
"app.js"
]
}
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The "auto_globals_jit" PHP option postponed the initialization of the $_SERVER
global variable until the script using it had been loaded (e. g. via the
"include" expression). As a result, nxt_php_register_variables() could be
called after fastcgi_finish_request() had finished the request and nulled
ctx->req, which thus caused a segmentation fault.
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Support for chrooting, rejecting symlinks, and rejecting crossing mounting
points on a per-request basis during static file serving.
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When the shm buffer is sent over the port queue, it needs to be completed
because it's sent over the port socket.
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The certificate is selected by matching the arriving SNI to the common name and
the alternatives names. If no certificate matches the name, the first bundle in
the array is chosen.
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Reviewed at https://rb.nginx.com/r/165/
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The idea is to put SAN after CN, but the previous version of the code
incorrectly assumed that CN was always present, which caused writes
outside the allocated object if there were no standard name attributes.
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Previously, entries of any type were counted during object allocation
but only DNS type entries were actually processed. As a result,
if some certificate entries had another type, returning information
about the certificate caused uninitialized memory access.
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This closes #525 issue on GitHub.
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The Ruby interpreter expects an explicit setlocale() call before initialization
to pick up character encodings in the "Encoding" class from the environment.
This closes #531 issue on GitHub.
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It appears that readdir() on Linux detects file types unreliably, always setting
the "d_type" field to DT_UNKNOWN for some less common filesystems. As a result,
all files were skipped and no certificate bundles were found when the state
directory was located on such filesystems.
Skipping "." and ".." instead of any non-regular files should be enough, as no
other non-regular files normally appear in this directory.
This closes #368 issue on GitHub.
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An immediate return statement on connection errors was mistakenly added to the
beginning of nxt_openssl_conn_io_shutdown() in ecd3c5bbf7d8, breaking the TLS
connection finalization procedure. As a result, a TLS connection was left
unfinalized if it had been closed prematurely or a fatal protocol error had
occurred, which caused memory and socket descriptor leakage.
Moreover, in some cases (notably, on handshake errors in tests with kqueue on
macOS) the read event was triggered later and nxt_h1p_conn_error() was called
the second time; after the change in af93c866b4f0, the latter call crashed the
router process in an attempt to remove a connection from the idle queue twice.
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This fixes file descriptor leakage in router. Shared memory file used to
send data from router to application. These files are shared among all
processes of same application and router keeps the opened file descriptor since
06017e6e3a5f commit.
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Shared app queue takes more memory than port memory. To unmap all memory pages
correct size need to be specified for munmap() call. Otherwise 4 Mb memory
leaked on each configured application removal.
The issue was introduced in 1d84b9e4b459.
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After WebSocket processing, the application port was released with incorrect
reason ("got request"), unnecessarily decrementing the active request counter.
The assertion was triggered only on application removal; a test was added
for this case.
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ServerRequest now inherit stream Readable object. ServerResponse
provides 'writable' property.
Thanks to Wu Jian Ping (@wujjpp).
This closes #274, closes #317 issues and closes #502 PR on GitHub.
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This is required in order to build Debian packages from current tip
without making manual interventions.
Moving forward, this should be a part of every version bump commit.
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When a static file larger than NXT_HTTP_STATIC_BUF_SIZE (128K) is served, two
buffers are allocated and chained; each retains the whole request memory pool.
Starting from 41331471eee7, the completion handler was called once for a linked
buffer chain, but the second buffer got lost.
This patch improves the completion handler's treatment of static buffers to
handle all linked buffers.
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The nxt_unit_ctx_port_recv() function may return the NXT_UNIT_AGAIN code, in
which case an attempt to reread the message should be made.
The issue was reproduced in load testing with response sizes 16k and up.
In the rare case of a NXT_UNIT_AGAIN result, a buffer of size -1 was processed,
which triggered a 'message too small' alert; after that, the app process was
terminated.
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Under high load, a queue synchonization issue may occur, starting from the
steady state when an app queue message is dequeued immediately after it has been
enqueued. In this state, the router always puts the first message in the queue
and is forced to notify the app about a new message in an empty queue using a
socket pair. On the other hand, the application dequeues and processes the
message without reading the notification from the socket, so the socket buffer
overflows with notifications.
The issue was reproduced during Unit load tests. After a socket buffer
overflow, the router is unable to notify the app about a new first message.
When another message is enqueued, a notification is not required, so the queue
grows without being read by the app. As a result, request processing stops.
This patch changes the notification algorithm by counting the notifications in
the pipe instead of getting the number of messages in the queue.
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Multithreaded application may create different shared memory segments in
different threads. The segments then passed to different router threads.
Because of this multithreading, the order of adding incoming segments is
not determined and there can be situation when some of the incoming segments
are not initialized yet.
This patch simply adds check for NULL to skip non-initialized segments.
Crash reproduced during load tests with high number of simultaneous
connections (1024 and more).
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