Commit Graph

171 Commits

Author SHA1 Message Date
MarcoFalke fa69ac7614
doxygen: Fix member comments 2018-09-26 15:42:21 -04:00
Chun Kuan Lee d38bf9105d Call unicode API on Windows 2018-09-11 21:09:46 +08:00
251 b193d5a443 Removes the Boost case_conv.hpp dependency.
This commit removes the `boost/algorithm/string/case_conv.hpp` dependency from the project. It replaces the `boost::to_lower` and `boost::to_upper` functions with custom functions that are locale independent and ASCII deterministic.
2018-08-28 18:42:53 +02:00
DrahtBot eb7daf4d60 Update copyright headers to 2018 2018-07-27 07:15:02 -04:00
251 e3245f2e7b Removes Boost predicate.hpp dependency
This is a squashed commit that squashes the following commits:

This commit removes the `boost/algorithm/string/predicate.hpp` dependenc
from the project by replacing the function calls to `boost::algorithm::starts_with`
`boost::algorithm::ends_with` and `all` with respectively C++11'
`std::basic_string::front`, `std::basic_string::back`, `std::all_of` function calls

This commit replaces `boost::algorithm::is_digit` with  a locale independent isdigi
function, because the use of the standard library's `isdigit` and `std::isdigit
functions is discoraged in the developer notes
2018-07-22 21:34:45 +02:00
wodry 07c493f2d1 scripted-diff: Replace NET_TOR with NET_ONION
-BEGIN VERIFY SCRIPT-

sed --in-place'' --expression='s/NET_TOR/NET_ONION/g' $(git grep -I --files-with-matches 'NET_TOR')

-END VERIFY SCRIPT-

The --in-place'' hack is required for sed on macOS to edit files in-place without passing a backup extension.
2018-07-02 16:41:13 +02:00
wodry 9f8c54b1b5 Log warning message when deprecated network name 'tor' is used (e.g. option onlynet=tor) 2018-06-24 22:09:01 +02:00
practicalswift c3f34d06be Make it clear which functions that are intended to be translation unit local
Do not share functions that are meant to be translation unit local with
other translation units. Use internal linkage for those consistently.
2018-05-03 21:47:40 +02:00
Thomas Snider 2c084a6609 net: Minor accumulated cleanups 2018-04-16 13:24:14 -07:00
Wladimir J. van der Laan 23e7fe8be8
Merge #12569: net: Increase signal-to-noise ratio in debug.log by adjusting log level when logging failed non-manual connect():s
cba2800 Increase signal-to-noise ratio in debug.log by adjusting log level when logging failed non-manual connect():s (practicalswift)

Pull request description:

  Increase signal-to-noise ratio in `debug.log` by adjusting log level when logging failed non-manual `connect()`:s.

  Before this patch:

  ```
  $ src/bitcoind -printtoconsole
  …
  2018-02-28 18:42:51 UpdateTip: new best=0000000000005448b10a219683d34b770a28044e1cc421032dea1a79ff548948 height=1286903 version=0x20000000 log2_work=69.791313 tx=17408546 date='2018-02-28 18:42:46' progress=1.000000 cache=0.0MiB(173txo)
  2018-02-28 18:37:52 connect() 10.11.21.34:18333 failed after select(): Connection refused (111)
  2018-02-28 18:43:22 connect() to 10.11.43.14:18333 failed after select(): Network is unreachable (101)
  2018-02-28 18:44:49 UpdateTip: new best=000000000000029a521ff2803e1441b09413b876accff5084a4cccf7747d798b height=1286904 version=0x20000000 log2_work=69.791345 tx=17408559 date='2018-02-28 18:44:51' progress=1.000000 cache=0.1MiB(502txo)
  2018-02-28 18:46:54 connect() to [2001:0:9d38:78ff:1234🔢1234:1234]:18333 failed: Network is unreachable (101)
  2018-02-28 18:48:56 connect() to [2001:0:9d38:6aff:1234🔢1234:1234]:18333 failed: Network is unreachable (101)
  2018-02-28 18:49:11 UpdateTip: new best=000000000000000206b79eb235e5dd907b6369de0e5d764330bf40ec0d460311 height=1286905 version=0x20000000 log2_work=69.791377 tx=17408577 date='2018-02-28 18:49:12' progress=1.000000 cache=1.0MiB(5245txo)
  ```

  After this patch:

  ```
  $ src/bitcoind -printtoconsole
  …
  2018-02-28 18:42:51 UpdateTip: new best=0000000000005448b10a219683d34b770a28044e1cc421032dea1a79ff548948 height=1286903 version=0x20000000 log2_work=69.791313 tx=17408546 date='2018-02-28 18:42:46' progress=1.000000 cache=0.0MiB(173txo)
  2018-02-28 18:44:49 UpdateTip: new best=000000000000029a521ff2803e1441b09413b876accff5084a4cccf7747d798b height=1286904 version=0x20000000 log2_work=69.791345 tx=17408559 date='2018-02-28 18:44:51' progress=1.000000 cache=0.1MiB(502txo)
  2018-02-28 18:49:11 UpdateTip: new best=000000000000000206b79eb235e5dd907b6369de0e5d764330bf40ec0d460311 height=1286905 version=0x20000000 log2_work=69.791377 tx=17408577 date='2018-02-28 18:49:12' progress=1.000000 cache=1.0MiB(5245txo)
  ```

  Please note that "manual `connect()`:s" (invoked via `-connect`, `-proxy` or `addnode`) are still reported at the default log level as these messages are likely to be relevant to end-users:

  ```
  $ src/bitcoind -printtoconsole -connect=127.0.0.1:1234
  …
  2018-02-28 18:31:13 connect() to 127.0.0.1:1234 failed after select(): Connection refused (111)

  $ src/bitcoind -printtoconsole -proxy=127.0.0.1:1234
  …
  2018-02-28 18:32:32 connect() to 127.0.0.1:1234 failed after select(): Connection refused (111)

  $ src/bitcoind -printtoconsole &
  $ src/bitcoin-cli addnode 127.0.0.1:1234 onetry
  …
  2018-02-28 18:33:40 connect() to 127.0.0.1:1234 failed after select(): Connection refused (111)
  ```

Tree-SHA512: 92e3c1e4b54ce8ccdd7ec31de147c8505710cd799ceb2bbc8576a086709967802403c9184df364b3cfa59bd98859f6ac8feb27fb09b9324194c6c47a042fc6d3
2018-04-13 19:25:18 +02:00
Vasil Dimov 8ae413235d
Remove redundant checks for MSG_* from configure.ac
It is redundant to check for the presence of MSG_NOSIGNAL macro in
configure.ac, define HAVE_MSG_NOSIGNAL and then check whether the later
is defined in the source code. Instead we can check directly whether
MSG_NOSIGNAL is defined. Same for MSG_DONTWAIT.

In addition to that, the checks we had in configure.ac produce a
compiler warning about unused variable and thus could fail if
-Werror is present and erroneously proclaim that the macros are
not available.
2018-03-15 20:02:00 +01:00
practicalswift cba2800e8c Increase signal-to-noise ratio in debug.log by adjusting log level when logging failed non-manual connect():s
Before this patch:

```
$ src/bitcoind -printtoconsole
…
2018-02-28 18:42:51 UpdateTip: new best=0000000000005448b10a219683d34b770a28044e1cc421032dea1a79ff548948 height=1286903 version=0x20000000 log2_work=69.791313 tx=17408546 date='2018-02-28 18:42:46' progress=1.000000 cache=0.0MiB(173txo)
2018-02-28T18:37:52Z connect() 10.11.21.34:18333 failed after select(): Connection refused (111)
2018-02-28 18:43:22 connect() to 10.11.43.14:18333 failed after select(): Network is unreachable (101)
2018-02-28 18:44:49 UpdateTip: new best=000000000000029a521ff2803e1441b09413b876accff5084a4cccf7747d798b height=1286904 version=0x20000000 log2_work=69.791345 tx=17408559 date='2018-02-28 18:44:51' progress=1.000000 cache=0.1MiB(502txo)
2018-02-28 18:46:54 connect() to [2001:0:9d38:78ff:1234🔢1234:1234]:18333 failed: Network is unreachable (101)
2018-02-28 18:48:56 connect() to [2001:0:9d38:6aff:1234🔢1234:1234]:18333 failed: Network is unreachable (101)
2018-02-28 18:49:11 UpdateTip: new best=000000000000000206b79eb235e5dd907b6369de0e5d764330bf40ec0d460311 height=1286905 version=0x20000000 log2_work=69.791377 tx=17408577 date='2018-02-28 18:49:12' progress=1.000000 cache=1.0MiB(5245txo)
```

After this patch:

```
$ src/bitcoind -printtoconsole
…
2018-02-28 18:42:51 UpdateTip: new best=0000000000005448b10a219683d34b770a28044e1cc421032dea1a79ff548948 height=1286903 version=0x20000000 log2_work=69.791313 tx=17408546 date='2018-02-28 18:42:46' progress=1.000000 cache=0.0MiB(173txo)
2018-02-28 18:44:49 UpdateTip: new best=000000000000029a521ff2803e1441b09413b876accff5084a4cccf7747d798b height=1286904 version=0x20000000 log2_work=69.791345 tx=17408559 date='2018-02-28 18:44:51' progress=1.000000 cache=0.1MiB(502txo)
2018-02-28 18:49:11 UpdateTip: new best=000000000000000206b79eb235e5dd907b6369de0e5d764330bf40ec0d460311 height=1286905 version=0x20000000 log2_work=69.791377 tx=17408577 date='2018-02-28 18:49:12' progress=1.000000 cache=1.0MiB(5245txo)
```

Please note that "manual connect():s" (invoked via `-connect`, `-proxy` or `addnode`) are still reported as usual:

```
$ src/bitcoind -printtoconsole -connect=10.11.12.13
…
2018-02-28 18:33:13 connect() to 10.11.12.13:18333 failed after select(): Connection refused (111)
$ src/bitcoind -printtoconsole -proxy=10.11.12.13
…
2018-02-28 18:32:32 connect() to 10.11.12.13:9050 failed after select(): Connection refused (111)
$ src/bitcoind -printtoconsole &
$ src/bitcoin-cli addnode "10.11.12.13" onetry
…
2018-02-28 18:34:40 connect() to 10.11.12.13:18333 failed after select(): Connection refused (111)
```
2018-03-11 10:49:04 +01:00
Alin Rus 19ac86e206 Remove useless string initialization. 2018-02-13 20:47:55 +01:00
MarcoFalke 0277173b1d
Merge #10498: Use static_cast instead of C-style casts for non-fundamental types
9ad6746ccd Use static_cast instead of C-style casts for non-fundamental types (practicalswift)

Pull request description:

  A C-style cast is equivalent to try casting in the following order:

  1. `const_cast(...)`
  2. `static_cast(...)`
  3. `const_cast(static_cast(...))`
  4. `reinterpret_cast(...)`
  5. `const_cast(reinterpret_cast(...))`

  By using `static_cast<T>(...)` explicitly we avoid the possibility of an unintentional and dangerous `reinterpret_cast`. Furthermore `static_cast<T>(...)` allows for easier grepping of casts.

  For a more thorough discussion, see ["ES.49: If you must use a cast, use a named cast"](https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#es49-if-you-must-use-a-cast-use-a-named-cast) in the C++ Core Guidelines (Stroustrup & Sutter).

Tree-SHA512: bd6349b7ea157da93a47b8cf238932af5dff84731374ccfd69b9f732fabdad1f9b1cdfca67497040f14eaa85346391404f4c0495e22c467f26ca883cd2de4d3c
2018-02-07 16:15:28 -05:00
Cory Fields 96dbd381cf net: initialize socket to avoid closing random fd's 2018-02-01 11:31:27 -05:00
Akira Takizawa 595a7bab23 Increment MIT Licence copyright header year on files modified in 2017 2018-01-03 02:26:56 +09:00
Wladimir J. van der Laan ba2f19504c
Merge #11363: net: Split socket create/connect
3830b6e net: use CreateSocket for binds (Cory Fields)
df3bcf8 net: pass socket closing responsibility up to caller for outgoing connections (Cory Fields)
9e3b2f5 net: Move IsSelectableSocket check into socket creation (Cory Fields)
1729c29 net: split socket creation out of connection (Cory Fields)

Pull request description:

  Requirement for #11227.

  We'll need to create sockets and perform the actual connect in separate steps, so break them up.

  #11227 adds an RAII wrapper around connection attempts, as a belt-and-suspenders in case a CloseSocket is missed.

Tree-SHA512: de675bb718cc56d68893c303b8057ca062c7431eaa17ae7c4829caed119fa3f15b404d8f52aca22a6bca6e73a26fb79e898b335d090ab015bf6456cf417fc694
2017-12-13 05:42:32 +01:00
Cory Fields df3bcf89e4 net: pass socket closing responsibility up to caller for outgoing connections
This allows const references to be passed around, making it clear where the
socket may and may not be invalidated.
2017-12-12 15:25:25 -05:00
Cory Fields 9e3b2f576b net: Move IsSelectableSocket check into socket creation
We use select in ConnectSocketDirectly, so this check needs to happen before
that.

IsSelectableSocket will not be relevant after upcoming changes to remove select.
2017-12-12 15:25:25 -05:00
Cory Fields 1729c29ded net: split socket creation out of connection
Also, check for the correct error during socket creation
2017-12-12 15:25:25 -05:00
practicalswift a720b928c8 Remove includes in .cpp files for things the corresponding .h file already included 2017-11-16 22:26:34 +01:00
MeshCollider 1a445343f6 scripted-diff: Replace #include "" with #include <> (ryanofsky)
-BEGIN VERIFY SCRIPT-
for f in \
  src/*.cpp \
  src/*.h \
  src/bench/*.cpp \
  src/bench/*.h \
  src/compat/*.cpp \
  src/compat/*.h \
  src/consensus/*.cpp \
  src/consensus/*.h \
  src/crypto/*.cpp \
  src/crypto/*.h \
  src/crypto/ctaes/*.h \
  src/policy/*.cpp \
  src/policy/*.h \
  src/primitives/*.cpp \
  src/primitives/*.h \
  src/qt/*.cpp \
  src/qt/*.h \
  src/qt/test/*.cpp \
  src/qt/test/*.h \
  src/rpc/*.cpp \
  src/rpc/*.h \
  src/script/*.cpp \
  src/script/*.h \
  src/support/*.cpp \
  src/support/*.h \
  src/support/allocators/*.h \
  src/test/*.cpp \
  src/test/*.h \
  src/wallet/*.cpp \
  src/wallet/*.h \
  src/wallet/test/*.cpp \
  src/wallet/test/*.h \
  src/zmq/*.cpp \
  src/zmq/*.h
do
  base=${f%/*}/ relbase=${base#src/} sed -i "s:#include \"\(.*\)\"\(.*\):if test -e \$base'\\1'; then echo \"#include <\"\$relbase\"\\1>\\2\"; else echo \"#include <\\1>\\2\"; fi:e" $f
done
-END VERIFY SCRIPT-
2017-11-16 08:23:01 +13:00
practicalswift c6b07fddcf Fix a vs. an typo 2017-10-09 10:37:40 +02:00
Wladimir J. van der Laan 9d31ed2e69
Merge #10663: net: split resolve out of connect
b887676 net: remove now-unused functions (Cory Fields)
45fd754 net: remove now-superfluous numeric resolve (Cory Fields)
2416dd7 net: separate resolving and conecting (Cory Fields)

Pull request description:

  This is a greatly simplified version of #10285, which only aims to address async resolving.

  It essentially breaks up two wrapper functions for things only used in one place (ConnectSocketDirectly/ConnectThroughProxy) in favor of calling them directly. This allows us to fully handle resolves before attempting a connection, as is necessary for async connections.

  As a bonus, I believe the logic is now much easier to follow than before.

Tree-SHA512: f03f618107379edf3efe2a9f3e3677e8f075017ab140a0b4fdc3b8263e6beff148d55256263ab10bc2125ef089ca68e0d8e865beeae176f1eca544e769c976d3
2017-09-28 17:05:47 +02:00
Wladimir J. van der Laan 22f816ef4d net: Improve and document SOCKS code
Make the SOCKS code more consistent, and document the constants used.
2017-09-26 16:00:14 +02:00
practicalswift 9ad6746ccd Use static_cast instead of C-style casts for non-fundamental types
A C-style cast is equivalent to try casting in the following order:

1. const_cast(...)
2. static_cast(...)
3. const_cast(static_cast(...))
4. reinterpret_cast(...)
5. const_cast(reinterpret_cast(...))

By using static_cast<T>(...) explicitly we avoid the possibility
of an unintentional and dangerous reinterpret_cast. Furthermore
static_cast<T>(...) allows for easier grepping of casts.
2017-09-22 14:59:27 +02:00
Cory Fields b887676e1b net: remove now-unused functions 2017-09-18 13:47:47 -04:00
Cory Fields 2416dd7cc9 net: separate resolving and conecting
ConnectSocketByName handled resolves as necessary, obscuring the connection
process. With them separated, each can be handled asynchronously.

Also, since proxies must be considered now anyway, go ahead and eliminate the
ConnectSocket wrapper and use ConnectSocketDirectly... directly.
2017-09-18 13:47:47 -04:00
practicalswift 90d4d89230 scripted-diff: Use the C++11 keyword nullptr to denote the pointer literal instead of the macro NULL
-BEGIN VERIFY SCRIPT-
sed -i 's/\<NULL\>/nullptr/g' src/*.cpp src/*.h src/*/*.cpp src/*/*.h src/qt/*/*.cpp src/qt/*/*.h src/wallet/*/*.cpp src/wallet/*/*.h src/support/allocators/*.h
sed -i 's/Prefer nullptr, otherwise SAFECOOKIE./Prefer NULL, otherwise SAFECOOKIE./g' src/torcontrol.cpp
sed -i 's/tor: Using nullptr authentication/tor: Using NULL authentication/g' src/torcontrol.cpp
sed -i 's/METHODS=nullptr/METHODS=NULL/g' src/test/torcontrol_tests.cpp src/torcontrol.cpp
sed -i 's/nullptr certificates/NULL certificates/g' src/qt/paymentserver.cpp
sed -i 's/"nullptr"/"NULL"/g' src/torcontrol.cpp src/test/torcontrol_tests.cpp
-END VERIFY SCRIPT-
2017-08-07 07:36:37 +02:00
Dag Robole 05e023f2ec Move CloseSocket out of SetSocketNonBlocking and pass SOCKET by const reference in SetSocket* functions 2017-07-22 09:11:55 +02:00
Pieter Wuille c5904e8714
Merge #10812: [utils] Allow bitcoin-cli's -rpcconnect option to be used with square brackets
5c643241e [utils] allow square brackets for ipv6 addresses in bitcoin-cli (John Newbery)
fe4fabaf1 [refactor] move SplitHostPort() into utilstrencodings (John Newbery)

Pull request description:

  bitcoin-cli's `-rpcconnect` can accept ipv6 addresses (as long as the libevent version is new enough), but fails to parse ipv6 with square brackets. This PR makes `bitcoin-cli` parse ipv6 in square brackets correctly.

  `bitcoin-cli -rpcconnect=[::1] <command>`

  should now be equivalent to

  `bitcoin-cli -rpcconnect=::1 <command>`

  This is useful so the `bitcoin-cli` option can now be in the same format as the `bitcoind` option.

  Doesn't include tests. I have a branch that fully tests `bitcoin-cli`, but that's queued behind several intermediate PRs.

  - first commit moves `SplitHostPort()` from libbitcoin_common into libbitcoin_util
  - second commit adds proper ipv6 parsing to bitcoin-cli

Tree-SHA512: 249d409f10360c989474283341f458cc97364a56a7d004ae6d5f13d8bffe3a51b5dc2484d42218848e2d42cd9c0b13a1b92e94ea19b209f7e91c875c208d8409
2017-07-15 13:26:49 -07:00
João Barbosa 4652791141 Fix uninitialized atomic variables 2017-07-13 23:25:56 +01:00
John Newbery fe4fabaf12 [refactor] move SplitHostPort() into utilstrencodings
This moves SplitHostPort from libbitcoin_common to libbitcoin_util so it
is available to bitcoin-cli.
2017-07-12 17:06:15 -04:00
Cory Fields 6d0bd5b73d net: do not allow resolving to an internal address
In order to prevent mixups, our internal range is never allowed as a resolve
result. This means that no user-provided string will ever be confused with an
internal address.
2017-06-14 18:05:01 -04:00
Wladimir J. van der Laan 7e96ecf075
Merge #9539: [net] Avoid initialization to a value that is never read
5844609 [net] Avoid initialization to a value that is never read (practicalswift)

Tree-SHA512: 068c3fba58034187f546688bc9b8b7317e0657e797850613fb6289a4efc28637e4d06a0fa5e57480538c6b8340ed6d6a6c6f9a96f130b698d5d60975490a03d8
2017-05-23 19:39:50 +02:00
Pieter Wuille ae786098bc
Merge #10061: [net] Added SetSocketNoDelay() utility function
ad415bc [net] Added SetSocketNoDelay() utility function (Thomas Snider)

Tree-SHA512: c19e3c9910b3fc2ef86f2434f3e91d343e9cd9e2116153941de9789e2a6fc0389bffe762d21b55cda4a4b1de993afee0564c6946e65d05cef9e866b58896f9af
2017-05-17 17:36:27 -07:00
Thomas Snider ad415bc16a [net] Added SetSocketNoDelay() utility function 2017-04-05 11:31:43 -07:00
Gregory Maxwell 6b3bb3d9ba Change LogAcceptCategory to use uint32_t rather than sets of strings.
This changes the logging categories to boolean flags instead of strings.

This simplifies the acceptance testing by avoiding accessing a scoped
 static thread local pointer to a thread local set of strings.  It
 eliminates the only use of boost::thread_specific_ptr outside of
 lockorder debugging.

This change allows log entries to be directed to multiple categories
 and makes it easy to change the logging flags at runtime (e.g. via
 an RPC, though that isn't done by this commit.)

It also eliminates the fDebug global.

Configuration of unknown logging categories now produces a warning.
2017-04-01 18:53:29 +00:00
Wladimir J. van der Laan 25da1ee36c build: cleanup: define MSG_DONTWAIT/MSG_NO_SIGNAL locally
Define MSG_DONTWAIT and MSG_NO_SIGNAL in the implementation files that
use them (`net.cpp` and `netbase.cpp`), instead of compat.h which is
included all over the place.

This avoids putting them in the global namespace, as defining them as 0
is a hack that works for our specific usage, but it is not a general
solution.

Also makes sure they are defined only once so the `!defined(MSG_x)` guard can go.
2017-03-05 09:47:29 +00:00
practicalswift 5844609451 [net] Avoid initialization to a value that is never read
Prior to this commit the value stored to `s` at initialization
was never read (in the case of STRERROR_R_CHAR_P).
2017-02-28 14:24:16 +01:00
Wladimir J. van der Laan 3ddfe29837 netbase: Do not print an error on connection timeouts through proxy
If a timeout happens while reading the proxy response, this effectively
means we timed out while connecting to the remote node. This is very
common for Tor, so do not print an error message.
2017-02-09 08:53:22 +01:00
Wladimir J. van der Laan 13f608582c netbase: Make InterruptibleRecv return an error code instead of bool 2017-02-09 08:51:53 +01:00
Wladimir J. van der Laan d9ae1cefa0
Merge #9289: net: drop boost::thread_group
67ee4ec net: misc header cleanups (Cory Fields)
8b3159e net: make proxy receives interruptible (Cory Fields)
5cb0fce net: remove thread_interrupted catch (Cory Fields)
d3d7056 net: make net processing interruptible (Cory Fields)
0985052 net: make net interruptible (Cory Fields)
799df91 net: add CThreadInterrupt and InterruptibleSleep (Cory Fields)
7325b15 net: a few small cleanups before replacing boost threads (Cory Fields)
2017-01-04 12:21:53 +01:00
Cory Fields 67ee4ec901 net: misc header cleanups 2017-01-03 17:56:21 -05:00
Cory Fields 8b3159ef0a net: make proxy receives interruptible 2017-01-03 17:56:21 -05:00
isle2983 27765b6403 Increment MIT Licence copyright header year on files modified in 2016
Edited via:

$ contrib/devtools/copyright_header.py update .
2016-12-31 11:01:21 -07:00
Karl-Johan Alm 8c1dbc5e9d Refactor: Removed begin/end_ptr functions. 2016-12-09 13:15:19 +09:00
Matt Corallo 10ae7a7b23 Revert "Use async name resolving to improve net thread responsiveness"
This reverts commit caf6150e97.

getaddrinfo_a has a nasty tendency to segfault internally in its
background thread, on every version of glibc I tested, especially
under helgrind.

See https://sourceware.org/bugzilla/show_bug.cgi?id=20874
2016-12-01 14:32:44 -08:00
Wladimir J. van der Laan 5eaaa83ac1 Kill insecure_random and associated global state
There are only a few uses of `insecure_random` outside the tests.
This PR replaces uses of insecure_random (and its accompanying global
state) in the core code with an FastRandomContext that is automatically
seeded on creation.

This is meant to be used for inner loops. The FastRandomContext
can be in the outer scope, or the class itself, then rand32() is used
inside the loop. Useful e.g. for pushing addresses in CNode or the fee
rounding, or randomization for coin selection.

As a context is created per purpose, thus it gets rid of
cross-thread unprotected shared usage of a single set of globals, this
should also get rid of the potential race conditions.

- I'd say TxMempool::check is not called enough to warrant using a special
  fast random context, this is switched to GetRand() (open for
  discussion...)

- The use of `insecure_rand` in ConnectThroughProxy has been replaced by
  an atomic integer counter. The only goal here is to have a different
  credentials pair for each connection to go on a different Tor circuit,
  it does not need to be random nor unpredictable.

- To avoid having a FastRandomContext on every CNode, the context is
  passed into PushAddress as appropriate.

There remains an insecure_random for test usage in `test_random.h`.
2016-10-17 13:08:35 +02:00
Pavel Janík b7c349d5e7 Do not shadow variables in networking code 2016-08-15 14:10:07 +02:00