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Found by Clang Static Analyzer.
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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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This closes #498 issue on GitHub.
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According to Section #3.1.2 of RFC 7230, after the status code
there must be a space even if the reason phrase is empty.
Also, only 3 digits allowed.
This closes #507 issue on GitHub.
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Previously, all requests that contained in header field names characters other
than alphanumeric, or "-", or "_" were rejected with a 400 "Bad Request" error
response.
Now, the parser allows the same set of characters as specified in RFC 7230,
including: "!", "#", "$", "%", "&", "'", "*", "+", ".", "^", "`", "|", and "~".
Header field names that contain only these characters are considered valid.
Also, there's a new option introduced: "discard_unsafe_fields". It accepts
boolean value and it is set to "true" by default.
When this option is "true", all header field names that contain characters
in valid range, but other than alphanumeric or "-" are skipped during parsing.
When the option is "false", these header fields aren't skipped.
Requests with non-valid characters in header field names according to
RFC 7230 are rejected regardless of "discard_unsafe_fields" setting.
This closes #422 issue on GitHub.
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The connection's local socket address is allocated from the connection
pool before the request is passed to the application; however, with keep-alive
connections, this field was unconditionally reset by a socket configuration
value that could be NULL. For the next request, the address was allocated
again from the same connection pool. Nonetheless, all leaked addresses
were released when the connection was closed.
The issue introduced in changeset 5c7dd85fabd5.
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The Apache HTTP server benchmarking tool, ab, issues HTTP/1.0 requests with
the 'Connection: Keep-Alive' header and expects a 'Connection: Keep-Alive'
header in the response.
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If idle connection was closed before h1proto had been allocated
then c->socket.data is NULL. This happens if nxt_h1p_idle_response()
is called by nxt_h1p_idle_close(). However, h1p->conn_write_tail
is used only in nxt_h1p_request_send() that would not be called
after nxt_h1p_idle_response().
The bug was introduced in f237e8c553fd.
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An idle connection was not removed from idle connection list
if the connections detected that listening socket had been closed.
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The invocation parameters should be logged as well, notably the path of the file
that is failed to be created.
Also, log level changed to ALERT as it's quite critical error.
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This is required due to lack of a graceful shutdown: there is a small gap
between the runtime's memory pool release and router process's exit. Thus, a
worker thread may start processing a request between these two operations,
which may result in an http fields hash access and subsequent crash.
To simplify issue reproduction, it makes sense to add a 2 sec sleep before
exit() in nxt_runtime_exit().
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This allows to specify redirects:
{
"action": {
"return": 301,
"location": "https://www.example.com/"
}
}
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This fixes crash introduced in 039b00e32e3d.
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Before this fix, only persistent connection request buffers were completed.
This issue was introduced in dc403927ab0b.
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This closes #386 on GitHub.
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The check was moved from the request body read stage.
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Keepalive connection is disabled if upstream response length
differs from specified in the "Content-Length" field value.
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Request state ready_handler required for further websocket events processing.
It is not required for regular response transferring.
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Scheme matches exact string “http” or “https”.
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This closes #223 issue on GitHub.
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When idle timeout occurs at the same time as a request comes in,
the timer handler closes connection while the read event triggers
request processing, and this eventually leads to segmentation fault.
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According to RFC 7232:
| A 304 response cannot contain a message-body; it is always terminated
| by the first empty line after the header fields.
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This was unintentionally disabled by 7b5026a0bdeb.
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Now keep-alive connection sends 408 response if listening
socket was closed while reconfiguration.
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