Parse IPv6 scope IDs.

(cherry picked from commit 9fecb59a94ef246088d7f3e0365c2fe80d0df2f4)

Merge branch 'upstream/pr/899' (evbuffer_freeze testcase enhancements)

* upstream/pr/899:
improve the description of parameter to evbuffer_read()
regress_buffer: improve testcase for evbuffer_fr

Merge branch 'upstream/pr/899' (evbuffer_freeze testcase enhancements)

* upstream/pr/899:
improve the description of parameter to evbuffer_read()
regress_buffer: improve testcase for evbuffer_freeze()

(cherry picked from commit a977d6963611c729b75108d31bf74718b7b3e06d)

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buffer: fix possible NULL dereference in evbuffer_setcb() on ENOMEM

[ @azat:

- add return heredoc for evbuffer_setcb()
- add unit test with event_set_mem_functions()
- look through the report

buffer: fix possible NULL dereference in evbuffer_setcb() on ENOMEM

[ @azat:

- add return heredoc for evbuffer_setcb()
- add unit test with event_set_mem_functions()
- look through the report from abi-compliance-checker/abi-dumper
]

Closes: #855
(cherry picked from commit bdcade47224f154052c927aed3c363a18b37112e)

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evdns: add new options -- so-rcvbuf/so-sndbuf

This will allow to customize SO_RCVBUF/SO_SNDBUF for nameservers in this
evdns_base, you may want to adjust them if the kernel starts dropping
udp packa

evdns: add new options -- so-rcvbuf/so-sndbuf

This will allow to customize SO_RCVBUF/SO_SNDBUF for nameservers in this
evdns_base, you may want to adjust them if the kernel starts dropping
udp packages.

(cherry picked from commit 538141eb7e590bc94c043b43b5e5483b13bc9c5e)

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typo error in header file

(cherry picked from commit c03dabd76aced01a9c8d253381c2ed6f3ad46b4f)

Revert "Protect min_heap_push_ against integer overflow."

This patch breaks the ABI compatibility, due to min_heap_idx expansion
[1]

And since major distros did not updated to 2.1.10 yet, this patc

Revert "Protect min_heap_push_ against integer overflow."

This patch breaks the ABI compatibility, due to min_heap_idx expansion
[1]

And since major distros did not updated to 2.1.10 yet, this patch will
be reverted:
- debian: https://packages.debian.org/search?keywords=libevent-dev
- ubuntu: https://packages.ubuntu.com/search?keywords=libevent-dev
- fedora: https://apps.fedoraproject.org/packages/libevent-devel

Also there is one that upgraded already:
- archlinux: https://www.archlinux.org/packages/?q=libevent
But archlinux is for developers, so it should be fine I guess.

[1]: https://abi-laboratory.pro/index.php?view=objects_report&l=libevent&v1=2.1.9&v2=2.1.10

- struct event_base
Change: Size of this type has been changed from 672 bytes to 664 bytes.
Effect: The fields or parameters of such data type may be incorrectly initialized or accessed by old client applications.

abi-compliance-checker diff with 2.1.9 before this patch:
Binary compatibility: 69.2%
Source compatibility: 100%
Total binary compatibility problems: 1, warnings: 1
Total source compatibility problems: 0, warnings: 0

after:
Binary compatibility: 100%
Source compatibility: 100%
Total binary compatibility problems: 0, warnings: 0
Total source compatibility problems: 0, warnings: 0

This reverts commit 0b46bb8cc9c0337b5fa0186d9cb031ff4f4ceb9a

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Protect min_heap_push_ against integer overflow.

Converting unsigned to size_t for size of memory objects allows
proper handling of very large heaps on 64 bit systems.

Signed-off-by: Tobias Stoeckm

Protect min_heap_push_ against integer overflow.

Converting unsigned to size_t for size of memory objects allows
proper handling of very large heaps on 64 bit systems.

Signed-off-by: Tobias Stoeckmann <[email protected]>
Closes: #799 (cherry-picked)
(cherry picked from commit 176fd5665512db95b1cf38fc647a7c706d80c14d)

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Remove experimental note for finalizers API

(cherry picked from commit 55f9863b18fe21ddd220d98941b7ac777593dde5)

evdns: add DNS_OPTION_NAMESERVERS_NO_DEFAULT/EVDNS_BASE_NAMESERVERS_NO_DEFAULT

- DNS_OPTION_NAMESERVERS_NO_DEFAULT
Do not "default" nameserver (i.e. "127.0.0.1:53") if there is no nameservers
in

evdns: add DNS_OPTION_NAMESERVERS_NO_DEFAULT/EVDNS_BASE_NAMESERVERS_NO_DEFAULT

- DNS_OPTION_NAMESERVERS_NO_DEFAULT
Do not "default" nameserver (i.e. "127.0.0.1:53") if there is no nameservers
in resolv.conf, (iff DNS_OPTION_NAMESERVERS is set)

- EVDNS_BASE_NAMESERVERS_NO_DEFAULT
If EVDNS_BASE_INITIALIZE_NAMESERVERS isset, do not add default
nameserver if there are no nameservers in resolv.conf (just set
DNS_OPTION_NAMESERVERS_NO_DEFAULT internally)

Fixes: #569
(cherry picked from commit e5b8f4c1925867d8e4cd7dc0390e5141d7ef1106)

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evdns: add descriptions for DNS_OPTION_*/DNS_OPTIONS_ALL

(cherry picked from commit 3e0dc1a6ab4b7024b93dc44c1bb79df0ef637fc0)

Add support for EV_TIMEOUT to event_base_active_by_fd

Closes: #194 (cherry-pick)
(cherry picked from commit 62df1301ca943011fa9c398323049bcddca2694d)

Define `_GNU_SOURCE` properly/consistently per autoconf

Although `_GNU_SOURCE` can be defined as an arbitrary #define per the
glibc docs [1], it's best to define it in a manner consistent with the w

Define `_GNU_SOURCE` properly/consistently per autoconf

Although `_GNU_SOURCE` can be defined as an arbitrary #define per the
glibc docs [1], it's best to define it in a manner consistent with the way
that autoconf defines it, i.e., `1`.

While this shouldn't matter in most cases, it does when the headers from
other projects follow the poorly defined GNU convention implemented by
autoconf and are included after the libevent's util.h header. An example
failure with clang, similar to the failure I encountered, is as follows:
```
$ printf "#define _GNU_SOURCE\n#define _GNU_SOURCE 1" | clang -c -x c -
<stdin>:2:9: warning: '_GNU_SOURCE' macro redefined [-Wmacro-redefined]
^
<stdin>:1:9: note: previous definition is here
^
1 warning generated.
```

This happened when compiling python [2] with a stale homebrew util.h file from
libevent (which admittedly would not happen in a correct libevent install, as the
header should be installed under /usr/local/include/event2/util.h). However, if
both headers had been combined (which is more likely), it would have failed as
shown above.

Removing the ad hoc definition unbreaks compiling python's pyconfig.h.in header
when included after util.h from libevent.

1. http://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html
2. https://github.com/python/cpython/blob/master/configure.ac#L126

Closes: #773 (cherry-picked)

Signed-off-by: Enji Cooper <[email protected]>
(cherry picked from commit 5f87be42f0ae0126938624a1419a572607078217)

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Eliminate fd conversion warnings and introduce EVUTIL_INVALID_SOCKET (windows)

windows has intptr_t instead of regular int.

Also tt_fd_op() had been introduced, since we cannot use tt_int_op() for

Eliminate fd conversion warnings and introduce EVUTIL_INVALID_SOCKET (windows)

windows has intptr_t instead of regular int.

Also tt_fd_op() had been introduced, since we cannot use tt_int_op() for
comparing fd, since it is not always int.

(cherry picked from commit b29207dceee33832bb28ab103a833df6a2fd29d3)

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rpc: use *_new_with_arg() to match function prototype

In 755fbf16c ("Add void* arguments to request_new and reply_new
evrpc hooks") this new functions had been introduced, but newer used,
what for?

rpc: use *_new_with_arg() to match function prototype

In 755fbf16c ("Add void* arguments to request_new and reply_new
evrpc hooks") this new functions had been introduced, but newer used,
what for? So let's use them.

(cherry picked from commit 99b231b0d875bc0814b0e4a940b6c9890d2a7754)

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Merge branch 'win32-visibility-event_debug_logging_mask_'

* win32-visibility-event_debug_logging_mask_:
Introduce EVENT_VISIBILITY_WANT_DLLIMPORT
regress_http: use TT_BLAZER() over event_debug()

Merge branch 'win32-visibility-event_debug_logging_mask_'

* win32-visibility-event_debug_logging_mask_:
Introduce EVENT_VISIBILITY_WANT_DLLIMPORT
regress_http: use TT_BLAZER() over event_debug()

Fixes: #702
(cherry picked from commit fb8666453ce8bb1d599a68636bed5db5ef4a7a57)

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Check existence of IPV6_V6ONLY in evutil_make_listen_socket_ipv6only() (mingw32)

MinGW 32-bit 5.3.0 does not defines it and our appveyour [1] build
reports this instantly:
evutil.c: In function

Check existence of IPV6_V6ONLY in evutil_make_listen_socket_ipv6only() (mingw32)

MinGW 32-bit 5.3.0 does not defines it and our appveyour [1] build
reports this instantly:
evutil.c: In function 'evutil_make_listen_socket_ipv6only':
evutil.c:392:40: error: 'IPV6_V6ONLY' undeclared (first use in this function)
return setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, (void*) &one,

[1]: https://www.appveyor.com/docs/windows-images-software/#mingw-msys-cygwin

Another solution will be to use mingw64 which has it, but I guess we do
want that #ifdef anyway.

(cherry picked from commit 23e79fd764b9f36f560d470f0fb60295dd942ac2)

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listener: ipv6only socket bind support

According to RFC3493 and most Linux distributions, default value is to
work in IPv4-mapped mode. If there is a requirement to bind same port
on same ip address

listener: ipv6only socket bind support

According to RFC3493 and most Linux distributions, default value is to
work in IPv4-mapped mode. If there is a requirement to bind same port
on same ip addresses but different handlers for both IPv4 and IPv6,
it is required to set IPV6_V6ONLY socket option to be sure that the
code works as expected without affected by bindv6only sysctl setting
in system.

See an example working with this patch:
https://gist.github.com/demirten/023008a63cd966e48b0ebcf9af7fc113

Closes: #640 (cherry-pick)
(cherry picked from commit 387d91f9ab95df8ac3d7bb58493310ad4a377dcf)

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Merge branch 'be-wm-overrun-v2'

* be-wm-overrun-v2:
Fix hangs due to watermarks overruns in bufferevents implementations
test: cover watermarks (with some corner cases) in ssl bufferevent

Fixes

Merge branch 'be-wm-overrun-v2'

* be-wm-overrun-v2:
Fix hangs due to watermarks overruns in bufferevents implementations
test: cover watermarks (with some corner cases) in ssl bufferevent

Fixes: #690
(cherry picked from commit 878bb2d3b9484b27594308da1d0d6a7c9bdf6647)

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Fix typo

Closes: #658
(cherry picked from commit 30d77f1b59bcd1433a89e803b9fa045c50883868)

Add convenience macros for user-triggered events

Signed-off-by: Philip Prindeville <[email protected]>
Closes: #647 (picked)
(cherry picked from commit d2acf67ec3ad2916236396992f094c0c65

Add convenience macros for user-triggered events

Signed-off-by: Philip Prindeville <[email protected]>
Closes: #647 (picked)
(cherry picked from commit d2acf67ec3ad2916236396992f094c0c65016028)

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Make rpc headers self-compilable

Fixes: #633
(cherry picked from commit c57f5c34903b02c6e7378865f71a2b83a5befb96)

Generating evdns_base_config_windows_nameservers docs on all platforms

(cherry picked from commit 791e3de0c38f9f413f33addcac2d8bca68590ca6)

Fixing doxygen docs for evdns_base_search_clear when generated on non-windows machines

(cherry picked from commit 2c1562949c49febe9a4d5ec33cabe99f1f6a82e1)

Fix typos in comments

(cherry picked from commit f24b28e4aff1dbc3440e283f70ac15aa7cebcc8d)

Fix incorrect ref to evhttp_get_decoded_uri in http.h

Replaces reference in the http.h include header file to evhttp_get_decoded_uri
with evhttp_uridecode. There is no function called evhttp_get_dec

Fix incorrect ref to evhttp_get_decoded_uri in http.h

Replaces reference in the http.h include header file to evhttp_get_decoded_uri
with evhttp_uridecode. There is no function called evhttp_get_decoded_uri.

(cherry picked from commit b49c70cc2ed54f511e2b41f7ed61d357c88300be)

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