45553e11c965db218733f9ad32ecde391b393443 refactor: Make `ThreadHTTP` return void (Hennadii Stepanov)
Pull request description:
The `bool` return value was introduced in 755aa05174 (https://github.com/bitcoin/bitcoin/pull/8421).
It has been not used since 8d3f46ec3938e2ba17654fecacd1d2629f9915fd (https://github.com/bitcoin/bitcoin/pull/14670).
No behavior change.
ACKs for top commit:
achow101:
ACK 45553e11c965db218733f9ad32ecde391b393443
brunoerg:
crACK 45553e11c965db218733f9ad32ecde391b393443
w0xlt:
ACK 45553e11c9
stickies-v:
ACK 45553e11c
Tree-SHA512: 1593a5740e729967fbe1363235cd5b77ecf431b29bc740a89a6c70fc838ad97a2e4a2cd7cd63aa482f7c50bc2ffabc8cd53e8f64d6032603cb3b662229bc3dc2
241f073932 feat: rpc external users are comma separated list (Konstantin Akimov)
68def970ad refactor: re-order arguments options alphabetically (Konstantin Akimov)
c7efd56a07 feat: rpc external users: use 2 queues but no extra threads (Konstantin Akimov)
c575a5808a feat: change handler to '/' for external users, use only rpc user name to choose queue (Konstantin Akimov)
f1c1fd873e feat: implementation for /external handler for RPC (Konstantin Akimov)
Pull request description:
## Issue being fixed or feature implemented
To avoid struggling to response to critical rpc requests, and split them from 3rd parties who uses a node as an external service, there are introduced one more queue of requests that will be served without throttling for instance consensus important rpcs
## What was done?
new command line arguments:
- `rpcexternaluser` - List of comma-separated usernames for JSON-RPC external connections. If not specified, there's no special queue is created, all requests in one queue
- `rpcexternalworkqueue=<n>` - Set the depth of the work queue to service external RPC calls
## How Has This Been Tested?
Functional test `rpc_platform_filter.py` is updated to test new functionality
## Breaking Changes
NA
## Checklist:
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] I have added or updated relevant unit/integration/functional/e2e tests
- [ ] I have made corresponding changes to the documentation
- [x] I have assigned this pull request to a milestone
ACKs for top commit:
UdjinM6:
utACK 241f073932
PastaPastaPasta:
utACK 241f073932
Tree-SHA512: 15b371f24f5302853b85419e2b20c29749d6aae1c98a541d7471f1d3a681643063302c2a5ecce04dfad2da9101ea69d2f08a7e0e11a28609c6011d78273c57a7
8f5c560e11a9f3c7c5877f444caa605bdc296e81 refactor: Refactored RequestMethodString function to follow developer notes (JoaoAJMatos)
7fd3b9491b0e553aa7d60a68bda82968a79da8f5 refactor: Deleted unreachable code in httpserver.cpp (JoaoAJMatos)
Pull request description:
Some of the code in httpserver.cpp was unreachable, and didn't follow the developer notes.
Continuation of [#26570 ](https://github.com/bitcoin/bitcoin/pull/26570)
ACKs for top commit:
stickies-v:
re-ACK [8f5c560](8f5c560e11)
Tree-SHA512: ba8cf4c6dde9e2bb0ca9d63a0de86dfa37b070803dde71ac8384c261045835697a2335652cf5894511b3af8fd99f30e1cbda4e4234815b8b39538ade90fab3f9
9d14f27bddab351fe98a2ae197bd4cf8a092c4f3 log: log RPC port on startup (James O'Beirne)
Pull request description:
I just spent a few hours trying to figure out why "18444" wasn't getting me to regtest's RPC server. I'm not the sharpest tool in the shed, but I was maybe understandably confused because "Bound to 127.0.0.1:18445" appears in the logs, which I assumed was the P2P port.
This change logs the RPC listening address by default on startup, which seems like a basic piece of information that shouldn't be buried under `-debug`.
ACKs for top commit:
dergoegge:
ACK 9d14f27bddab351fe98a2ae197bd4cf8a092c4f3
jarolrod:
ACK 9d14f27bddab351fe98a2ae197bd4cf8a092c4f3
aureleoules:
ACK 9d14f27bddab351fe98a2ae197bd4cf8a092c4f3
Tree-SHA512: 5c86f018c0b8d6264abf878c921afe53033b23ab4cf289276bb1ed28fdf591c9d8871a4baa4098c363cb2aa9a637d2e4e18e56b14dfc7d767ee40757d7ff2e7c
c62d763fc313585d79ad833c9d729f6acf2652aa Necessary improvements to make configure work without libevent installed (Perlover)
091ccc38c2e589b649648cbcc99aca4802f98775 The evhttp_connection_get_peer function from libevent changes the type of the second parameter. Fixing the problem. (Perlover)
Pull request description:
The second parameter of evhttp_connection_get_peer in libevent already has type as `const char **`
The compilation of bitcoind with the fresh libevent occurs errors
Details: https://github.com/bitcoin/bitcoin/issues/23606
ACKs for top commit:
laanwj:
Code review ACK c62d763fc313585d79ad833c9d729f6acf2652aa
luke-jr:
tACK c62d763fc313585d79ad833c9d729f6acf2652aa
Tree-SHA512: d1c8062d90bd0d55c582dae2c3a7e5ee1b6c7ca872bf4aa7fe6f45a52ac4a8f59464215759d961f8efde0efbeeade31b08daf9387d7d50d7622baa1c06992d83
faca73000fa8975c28f6be8be01957c1ae94ea62 ci: Install fixed version of clang-format for linters (MarcoFalke)
fa4695da4c69646b58a8fa0b6b30146bb234deb8 build: Sort Makefile.am after renaming file (MarcoFalke)
cccc2784a3bb10fa8e43be7e68207cafb12bd915 scripted-diff: Move ui_interface to the node lib (MarcoFalke)
fa72ca6a9d90d66012765b0043fd819698b94ba8 qt: Remove unused includes (MarcoFalke)
fac96e6450d595fe67168cb7afa7692da6cc9973 wallet: Do not include server symbols (MarcoFalke)
fa0f6c58c1c6d10f04c4e65a424cc51ebca50a8c Revert "Fix link error with --enable-debug" (MarcoFalke)
Pull request description:
This reverts a hacky workaround from commit b83cc0f, which only happens to work due to compiler optimizations. Then, it actually fixes the linker error.
The underlying problem is that the wallet includes symbols from the server (ui_interface), which usually results in linker failures. Though, in this specific case the linker failures have not been observed (unless `-O0`) because our compilers were smart enough to strip unused symbols.
Fix the underlying problem by creating a new header-only with the needed symbol and move ui_interface to node to clarify that this is part of libbitcoin_server.
ACKs for top commit:
Sjors:
ACK faca730
laanwj:
ACK faca73000fa8975c28f6be8be01957c1ae94ea62
hebasto:
re-ACK faca73000fa8975c28f6be8be01957c1ae94ea62, since the [previous](https://github.com/bitcoin/bitcoin/pull/19331#pullrequestreview-434420539) review:
Tree-SHA512: e9731f249425aaea50b6db5fc7622e10078cf006721bb87989cac190a2ff224412f6f8a7dd83efd018835302337611f5839e29e15bef366047ed591cef58dfb4
fa4632c41714dfaa699bacc6a947d72668a4deef test: Move boost/stdlib includes last (MarcoFalke)
fa488f131fd4f5bab0d01376c5a5013306f1abcd scripted-diff: Bump copyright headers (MarcoFalke)
fac5c373006a9e4bcbb56843bb85f1aca4d87599 scripted-diff: Sort test includes (MarcoFalke)
Pull request description:
When writing tests, often includes need to be added or removed. Currently the list of includes is not sorted, so developers that write tests and have `clang-format` installed will either have an unrelated change (sorting) included in their commit or they will have to manually undo the sort.
This pull preempts both issues by just sorting all includes in one commit.
Please be aware that this is **NOT** a change to policy to enforce clang-format or any other developer guideline or process. Developers are free to use whatever tool they want, see also #18651.
Edit: Also includes a commit to bump the copyright headers, so that the touched files don't need to be touched again for that.
ACKs for top commit:
practicalswift:
ACK fa4632c41714dfaa699bacc6a947d72668a4deef
jonatack:
ACK fa4632c41714dfaa, light review and sanity checks with gcc build and clang fuzz build
Tree-SHA512: 130a8d073a379ba556b1e64104d37c46b671425c0aef0ed725fd60156a95e8dc83fb6f0b5330b2f8152cf5daaf3983b4aca5e75812598f2626c39fd12b88b180
cadb77a6ab8a3e6f56062cfaec4dd8168c71b39d net: Add compat.h header for htonl function (Hennadii Stepanov)
f796f0057bc7dad8e7065831b07f432fc0fb9f08 net: Drop unneeded headers when compat.h included (Hennadii Stepanov)
467c34644861a5267601255650e27c7aadab31dc net: Drop unneeded Windows headers in compat.h (Hennadii Stepanov)
Pull request description:
It is the `compat.h` header's job to provide platform-agnostic interfaces for internet operations.
No need in `#include <arpa/inet.h>` scattered around.
ACKs for top commit:
practicalswift:
re-ACK cadb77a6ab8a3e6f56062cfaec4dd8168c71b39d: patch looks even better
laanwj:
Code review ACK cadb77a6ab8a3e6f56062cfaec4dd8168c71b39d
Tree-SHA512: 625ff90b2806310ab856a6ca1ddb6d9a85aa70f342b323e8525a711dd12219a1ecec8373ec1dca5a0653ffb11f9b421753887b25615d991ba3132c1cca6a3c6e
8dd5946c0b7aa8f3976b14a5de4ce84b80a9c32a add functional test (Larry Ruane)
b5a80fa7e487c37b7ac0e3874a2fabade41b9ca8 util: Handle HTTP_SERVICE_UNAVAILABLE in bitcoin-cli (Hennadii Stepanov)
Pull request description:
If `bitcoind` is processing 16 RPC requests, attempting to submit another request using `bitcoin-cli` produces this less-than-helpful error message: `error: couldn't parse reply from server`. This PR changes the error to: `error: server response: Work queue depth exceeded`.
ACKs for top commit:
fjahr:
tACK 8dd5946c0b7aa8f3976b14a5de4ce84b80a9c32a
luke-jr:
utACK 8dd5946c0b7aa8f3976b14a5de4ce84b80a9c32a (no changes since previous utACK)
hebasto:
re-ACK 8dd5946c0b7aa8f3976b14a5de4ce84b80a9c32a, only suggested changes since my [previous](https://github.com/bitcoin/bitcoin/pull/18335#pullrequestreview-460621350) review.
darosior:
ACK 8dd5946c0b7aa8f3976b14a5de4ce84b80a9c32a
Tree-SHA512: 33e25f6ff05d9b56fae2bdb68b132557bb8e995f5438ac4fbbc53c304c5152a98aa43c43600c31d8a6a2830cbd48bf8ec7d89dce50190b29ec00a43830126913
faf45d1f1f997c316fc4c611a23c4456533eefe9 http: Avoid crash when g_thread_http was never started (MarcoFalke)
fa12a37b27f0570a551b8c103ea6537ee4a8e399 test: Replace inline-comments with logs, pep8 formatting (MarcoFalke)
fa83b39ff3ae3fbad93df002915c0e5f99c104a9 init: Remove confusing and redundant InitError (MarcoFalke)
Pull request description:
Avoid a crash during shutdown when the init sequence failed for some reason
ACKs for top commit:
promag:
Tested ACK faf45d1f1f997c316fc4c611a23c4456533eefe9.
ryanofsky:
Code review ACK faf45d1f1f997c316fc4c611a23c4456533eefe9. Thanks for updates, this is much easier to parse for me now. Since previous reviews: split out and reverted some cleanups & replaced chmod with mkdir in test
hebasto:
ACK faf45d1f1f997c316fc4c611a23c4456533eefe9, tested on Linux Mint 19.3 with the following patch:
Tree-SHA512: 59632bf01c999e65c724e2728ac103250ccd8b0b16fac19d3a2a82639ab73e4f2efb86c78e63c588a5954625d8d0cf9545e2a7e070e6e15d2a54beeb50e00b61
18bd83b1fee2eb47ed4ad05c91f2d6cc311fc9ad util: Cleanup translation.h (Hennadii Stepanov)
e95e658b8ec6e02229691a1941d688e96d4df6af doc: Do not translate technical or extremely rare errors (Hennadii Stepanov)
7e923d47ba9891856b86bc9f718cf2f1f773bdf6 Make InitError bilingual (Hennadii Stepanov)
917ca93553917251e0fd59717a347c63cdfd8a14 Make ThreadSafe{MessageBox|Question} bilingual (Hennadii Stepanov)
23b9fa2e5ec0425980301d2eebad81e660a5ea39 gui: Add detailed text to BitcoinGUI::message (Hennadii Stepanov)
Pull request description:
This is an alternative to #15340 (it works with the `Chain` interface; see: https://github.com/bitcoin/bitcoin/pull/15340#issuecomment-502674004).
Refs:
- #16218 (partial fix)
- https://github.com/bitcoin/bitcoin/pull/15894#issuecomment-487947077
This PR:
- makes GUI error messages bilingual: user's native language + untranslated (i.e. English)
- insures that only untranslated messages are written to the debug log file and to `stderr` (that is not the case on master).
If a translated string is unavailable only an English string appears to a user.
Here are some **examples** (updated):
* `qt5ct: using qt5ct plugin` message is my local environment specific; please ignore it.
---
Note for reviewers: `InitWarning()` is out of this PR scope.
ACKs for top commit:
Sjors:
re-tACK 18bd83b1fee2eb47ed4ad05c91f2d6cc311fc9ad
MarcoFalke:
ACK 18bd83b1fee2eb47ed4ad05c91f2d6cc311fc9ad 🐦
Tree-SHA512: 3cc8ec44f84403e54b57d11714c86b0855ed90eb794b5472e432005073354b9e3f7b4e8e7bf347a4c21be47299dbc7170f2d0c4b80e308205ff09596e55a4f96
# Conflicts:
# src/dashd.cpp
# src/httpserver.cpp
# src/index/base.cpp
# src/init.cpp
# src/interfaces/chain.cpp
# src/interfaces/chain.h
# src/interfaces/node.cpp
# src/net.h
# src/qt/bitcoingui.cpp
# src/ui_interface.h
# src/wallet/init.cpp
# src/wallet/load.cpp
084e17cebd424b8e8ced674bc810eef4e6ee5d3b Remove unused includes (practicalswift)
Pull request description:
As requested by MarcoFalke in https://github.com/bitcoin/bitcoin/pull/16273#issuecomment-521332089:
This PR removes unused includes.
Please note that in contrast to #16273 I'm limiting the scope to the trivial cases of pure removals (i.e. no includes added) to make reviewing easier.
I'm seeking "Concept ACK":s for this obviously non-urgent minor cleanup.
Rationale:
* Avoids unnecessary re-compiles in case of header changes.
* Makes reasoning about code dependencies easier.
* Reduces compile-time memory usage.
* Reduces compilation time.
* Warm fuzzy feeling of being lean :-)
ACKs for top commit:
ryanofsky:
Code review ACK 084e17cebd424b8e8ced674bc810eef4e6ee5d3b. PR only removes include lines and it still compiles. In the worst case someone might have to explicitly add an include later for something now included implicitly. But maybe some effort was taken to avoid this, and it wouldn't be a tragedy anyway.
Tree-SHA512: 89de56edc6ceea4696e9579bccff10c80080821685b9fb4e8c5ef593b6e43cf662f358788701bb09f84867693f66b2e4db035b92b522a0a775f50b7ecffd6a6d
fa92e60f38cb109fe5a3c7acfe1017ffebc388cc refactor: Make httpserver work queue a unique_ptr (MarcoFalke)
Pull request description:
This simplifies the code a bit because `if (p) { delete p; p = nullptr; }` can be replaced by a call to the `reset()` member.
ACKs for top commit:
promag:
Core review ACK fa92e60f38cb109fe5a3c7acfe1017ffebc388cc.
jonatack:
ACK fa92e60f38cb109fe5a3c7acfe1017ffebc388cc code review, debug build clean, ran test/functional/interface*.py tests locally as a sanity check
hebasto:
ACK fa92e60f38cb109fe5a3c7acfe1017ffebc388cc, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: 6b122162317dd4ad6889341745c7ac1903a3ee510f6548f46dc356308442a6eff13eb8dc604c38ba18783e7a66d2b836d641a8594ff980a010c12c97f3856684
77777c5624 log: Construct global logger on first use (MarcoFalke)
Pull request description:
The (de)initialization order is not well defined in C++, so generally it is not safe to use globals as the (de/con)structor of one global could use the (de/con)structor of another global before/after it has been (con/de)structed.
Specifically this fixes:
* `g_logger` might not be initialized on the first use, so do that. (Fixes#15111)
Tree-SHA512: eb9c22f4baf31ebc5b0b9ee6a51d1354bae1f0df186cc0ce818b4483c7b5a7f90268d2b549ee96b4c57f8ef36ab239dc6497f74f3e2ef166038f7437c368297d
fb434159d1 Remove global symbols: Avoid using the global namespace if possible (practicalswift)
Pull request description:
Remove global symbols: Avoid using the global namespace if possible.
Partially resolves#15612 ("Reduce the number of global symbols used").
Change in global symbols as reported by `nm bitcoind` before vs after:
```
$ diff -u <(nm src/bitcoind-before | c++filt | grep -E '^[0-9a-f]+ [A-Z] ' | cut -f3- -d' ' | sort -u) \
<(nm src/bitcoind-after | c++filt | grep -E '^[0-9a-f]+ [A-Z] ' | cut -f3- -d' ' | sort -u) \
| grep -E '^[+-][^+-]'
-boundSockets
-cs_warnings
-eventHTTP
-fFeeEstimatesInitialized
-fLargeWorkForkFound
-fLargeWorkInvalidChainFound
-pathHandlers
-strMiscWarning[abi:cxx11]
-threadHTTP
```
ACKs for commit fb4341:
Tree-SHA512: d2f78f6188a992b0e0de8d107e2c494cfa0faa2de4fda634a1d3606d6515633bec86289cf2a2e78ffe467b17b795e2243cc459fb44e0dfe2fc69899506ff61c9
* Merge 9a3a984bb
Merge #14272: init: Remove deprecated args from hidden args
fa910e4301 init: Remove deprecated args from hidden args (MarcoFalke)
Pull request description:
The args have been deprecated since 0.17 (maybe longer) and since we reject unknown args, there is no need to add deprecated args to the list of hidden args and then hand-craft an error message if a user provides them.
Tree-SHA512: 3a3191439ab0d7969fb72801d097bd86998524f84b3819380224f746cbe4b0f57beec1ad34744424f6587038035b0ddf418ad13171a8d9c3b97b4f3b7b3222a3
* Address review comment
Modified hidden_args in SetupServerArgs()
Removed usehd from list of unsupported/deprecated args
Co-authored-by: MarcoFalke <falke.marco@gmail.com>
fa2510d5c1cdf9c2cd5cc9887302ced4378c7202 Use C++11 default member initializers (MarcoFalke)
Pull request description:
Changes:
* Remove unused constructors that leave some members uninitialized
* Remove manual initialization in each constructor and prefer C++11 default member initializers
This is not a stylistic change, but a change that avoids bugs such as:
* fix uninitialized read when stringifying an addrLocal #14728
* qt: Initialize members in WalletModel #12426
* net: correctly initialize nMinPingUsecTime #6636
* ...
Tree-SHA512: 0f896f3b9fcc464d5fc7525f7c86343ef9ce9fb13425fbc68e9a9728fd8710c2b4e2fd039ee08279ea41ff20fd92b7185cf5cca95a0bcb6a5340a1e6f03cae6b
4ed730802f9ec3d65477a29a318dd78216ef7085 scripted-diff: Rename misleading 'defaultPort' to 'http_port' (Murray Nesbitt)
Pull request description:
`defaultPort` in `HTTPBindAddresses()` is misleadingly named. `defaultPort ` suggests a constant, not something that might be overridden by `-rpcport`.
Tree-SHA512: f6ae8bdc2b4a4f503e44df9efdec32c854d2dede87714399f53791d50cce6bc41c46b01d1583cfc0e3e4777c244e1c74443fa39d9da50a45e53af265b74a17d1
4e353cb618745cdb5d98e58e7dcd400ded01299a http: Release work queue after event base finish (João Barbosa)
Pull request description:
This fixes a race between `http_request_cb` and `StopHTTPServer` where
the work queue is used after release.
Fixes#18856.
ACKs for top commit:
fjahr:
Code review ACK 4e353cb618745cdb5d98e58e7dcd400ded01299a
achow101:
ACK 4e353cb618745cdb5d98e58e7dcd400ded01299a
LarryRuane:
ACK 4e353cb618745cdb5d98e58e7dcd400ded01299a
hebasto:
ACK 4e353cb618745cdb5d98e58e7dcd400ded01299a, tested (rebased on top of master 9313c4e6aa4b707c06a86b33d5d2753cd8383340) on Linux Mint 20.1 (x86_64) using MarcoFalke's [patch](https://github.com/bitcoin/bitcoin/pull/19033#issuecomment-640106647), including different `-rpcthreads`/`-rpcworkqueue` cases. The bug is fixed. The code is correct.
Tree-SHA512: 185d2a9744d0d5134d782bf321ac9958ba17b11a5b3d70b4897c8243e6b146dfd3f23c57aef8e10ae9484374120b64389c1949a9cf0a21dccc47ffc934c20930
34b04eec4448bd37a8dbf560e4d99c7e7ca7e9c0 refactor: Add TSA annotations to the WorkQueue class members (Hennadii Stepanov)
Pull request description:
Noted while reviewing #19033, and hoping this will not conflict with it :)
ACKs for top commit:
promag:
Code review ACK 34b04eec4448bd37a8dbf560e4d99c7e7ca7e9c0.
Tree-SHA512: 4c15729acd95223263c19bc0dd64b9e7960872b48edee6eee97a5d0c2b99b8838185ac3a2ccd5bee992cb3a12498633427fe9919be5a12da9949fcf69a6275a0
aff2748f8aee72f03b5fb6f6f97f0d0f66391755 httpserver: use own HTTP status codes (Filip Gospodinov)
Pull request description:
Before, macros defined in `<event2/http.h>` have been used for some HTTP status codes. `<event2/http.h>` is included implicitly and the usage of its status code macros is inconsistent with the majority HTTP response implementations in this file.
Now, the `HTTPStatusCode` enum from `<rpc/protocol.h>` is consistently used for all HTTP response implementations.
ACKs for top commit:
practicalswift:
ACK aff2748f8aee72f03b5fb6f6f97f0d0f66391755 -- patch looks correct
laanwj:
ACK aff2748f8aee72f03b5fb6f6f97f0d0f66391755
Tree-SHA512: 6a7043488b88dcd584215d16b5f16f7bd668fe5553d31298d1beef134d2b0648aef81533014e34d1cd600baa36ee4e853f195352f4a00c866bd5ab1ff688bd50
3ccfa34b32 convert C-style (void) parameter lists to C++ style () (Arvid Norberg)
Pull request description:
In C, an empty parameter list, `()`, means the function takes any arguments, and `(void)` means the function does not take any parameters.
In C++, an empty parameter list means the function does not take any parameters.
So, C++ still supports `(void)` parameter lists with the same semantics, why change to `()`?
1. removing the redundant `void` improves signal-to-noise ratio of the code
2. using `(void)` exposes a rare inconsistency in that a template taking a template `(T)` parameter list, cannot be instantiated with `T=void`
Tree-SHA512: be2897b6c5e474873aa878ed6bac098382cd21866aec33752fe40b089a6331aa6263cae749aba1b4a41e8467f1a47086d32eb74abaf09927fd5a2f44a4b2109a
# Conflicts:
# src/qt/rpcconsole.cpp
ab8c6f24d28ea1d1e6258cf316b4b97a0baf2377 Add SAFE_CHARS[SAFE_CHARS_URI]: Chars allowed in URIs (RFC 3986) (practicalswift)
991248649b76a5a071e1360a700f3e2ecf3e1e1f rpc: Make HTTP RPC debug logging more informative (practicalswift)
Pull request description:
* Make HTTP RPC debug logging more informative
* Avoid excessively large log messages (which could theoretically fill up the disk) when running with debug option `-debug=http`
Tree-SHA512: 9068862fb7d34db1e12e6b9dde78b669b86c65b4fed3ea8c9eb6c35310d77fd12b16644728fd7e9fbf25059d25114bded9e061eb3de649d8847486ec42041ce9
1fabd59e7 Break circular dependency: init -> * -> init by extracting shutdown.h (Ben Woosley)
e62fdfeea Drop unused init.h includes (Ben Woosley)
Pull request description:
Most includers just wanted to react to pending shutdown.
This isolates access to `fRequestShutdown` and limits access to the shutdown api functions, including the new `CancelShutdown` for setting it to `false`.
Tree-SHA512: df42f75dfbba163576710e9a67cf1228531fd99d70a2f187bfba0bcc476d6749cf88180a97e66a81bb5b6c3c7f0917de7402d26039ba7b644cb7509b02f7e267
