mod_http2: update after backport



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1792212 13f79535-47bb-0310-9956-ffa450edef68

mod_http2: fixed possible deadlock that could occur when connections were 
     terminated early with ongoing streams. Fixed possible hanger with timeout
     on race when connection considers itself idle.



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That allows to upgrade to jboss-remoting for example
or to run an HTTP/1.1 backend that needs to upgrade to
WebSocket.
See also:
 https://issues.jboss.org/browse/JBCS-254
 https://issues.jboss.org/browse/JBCS-291


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A configtest isn't useful if you're just trying to get compile settings.
Move the settings dump up to just after ap_read_config(), which has
already done the minimum necessary to figure out which MPM is in use.

Even if ap_read_config() failed, still print as many compile settings as
we can. The user will see the error log entry on stderr.

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Start from 10027 to match the current trunk (r1791845), which will be
merged into shortly.

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This should help during testing and debugging. Use APLOG_NOTICE for now,
until we fix PR60999, so that people can actually see the log message.

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This is most likely a follow-up to r1628833.

At some point during the OpenSSL 1.0.2 beta, the contract for custom
extension callbacks changed from "returning -1 skips the extension" to
"returning -1 will issue a TLS fatal alert". This caused mod_ssl_ct to
abort TLS connections that it intended to ignore. Zero is the correct
return value for "do nothing" in 1.0.2.

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LanguagePriority by a first-order comparison and drop negligable translations
from our ordered priority preference list entirely.

A better comparison would be total number of documents in-sync, or some
convoluted weight ordering each document by which are more in sync than
others. Leaving that puzzle to an interested hacker.


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update after mod_http2 backport.



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mod_http2: normalize zombie slot state before pushing it on the free list.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1791773 13f79535-47bb-0310-9956-ffa450edef68

...but at the moment, this won't actually get logged unless you're
running in debug mode, due to an unrelated bug (PR60999).

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CRYPTO_THREADID_set_callback() is write-once, so if mod_ssl is unloaded
and reloaded into a different address, we'll crash if OpenSSL wasn't
also unloaded and reloaded at the same time. This can happen if another
module or library is using OpenSSL as well.

- OpenSSL 1.1.0 isn't affected.
- Certain platforms (Windows, BeOS, and POSIX-compliant systems) can
  make use of the default THREADID callback in OpenSSL 1.0.x.
- If the deprecated CRYPTO_set_id_callback() is available, we can use it
  instead of CRYPTO_THREADID_set_callback().

Otherwise, we have to fall back to CRYPTO_THREADID_set_callback(), but
hopefully that applies to a small percentage of users at this point.

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Mark the things that are busted.

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Should make it easier to see what's going on in the next few changes.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/trunk-openssl-threadid@1791730 13f79535-47bb-0310-9956-ffa450edef68

mod_http2: MaxKeepAliveRequests now limits the number of times a 
     slave connection gets reused. 



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1791669 13f79535-47bb-0310-9956-ffa450edef68

On platforms where the APR_ASCII_LF != '\n', like EBCDIC systems,
strmatch or pcre patterns from the source or config will be in
the native encoding, and this module will really only work on 
content in the native encoding.

(mod_substitute runs before mod_charset_lite for a similar reason)

I thought #if APR_CHARSET_EBCDIC or even #ifdef __MVS__ was overkill
here. 




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mod_http2: client streams that lack the EOF flag get now forcefully
     closed with a RST_STREAM (NO_ERROR) when the request has been answered.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1791388 13f79535-47bb-0310-9956-ffa450edef68

mod_http2: only when 'HttpProtocolOptions Unsafe' is configured, will
     control characters in response headers or trailers be forwarded to the
     client. Otherwise, in the default configuration, a request will eiher 
     fail with status 500 or the stream will be reset by a RST_STREAM frame. 



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Increase the number of threads from three to ten. Patch by rjung.

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This is step one for fixing, or at least mitigating, PR60947. Determine
which platforms can use the default OpenSSL (1.0.x) threadid-callback,
by recording the address of errno for several threads and testing that
they're all different.

The result of this test is put into the new macro,
AP_OPENSSL_USE_ERRNO_THREADID.

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do not recycle the socket.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1790978 13f79535-47bb-0310-9956-ffa450edef68

mpm_winnt: always invoke ap_lingering_close() at connection end.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1790973 13f79535-47bb-0310-9956-ffa450edef68

the "Serving pre-compressed content" section of the docs.

Generally speaking, this section would benefit from a rewrite pointing
out how to configure a mod_deflate + mod_brotli configuration with
precompressed contents, but for now at least fix the mistakes in the
configuration.


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in the documentation (BrotliCompressionQuality, BrotliCompressionWindow,
BrotliCompressionMaxInputBlock, BrotliAlterETag).


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in the documentation.

Currently, mod_brotli only allows dynamic output compression, and doesn't
have the server-side decompression capability.


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the documentation.

The previous description explained the semantics of this variable as
if it has been a (non-existing) "force-brotli".


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mod_http2: explicit int conversions to silence warnings in mod-h2 build.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1790855 13f79535-47bb-0310-9956-ffa450edef68

that has been referring to httpd 2.2.x.

There's no mod_brotli in 2.2.x.

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The 0.6.0 version has just been released [1], and it contains the
necessary API required for mod_brotli.

[1] https://github.com/google/brotli/releases/tag/v0.6.0

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1790852 13f79535-47bb-0310-9956-ffa450edef68

update after mod_http2 backport



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1790850 13f79535-47bb-0310-9956-ffa450edef68

mod_proxy_http2: no longer mapping link headers when preserve host is on.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1790842 13f79535-47bb-0310-9956-ffa450edef68