Commit graph

211 commits

Author SHA1 Message Date
Hennadii Stepanov
3174425255
Cleanup headers after #20788 2021-09-11 10:47:02 +03:00
Wladimir J. van der Laan
f9e86d8966
Merge #21387: p2p: Refactor sock to add I2P fuzz and unit tests
40316a37cb test: add I2P test for a runaway SAM proxy (Vasil Dimov)
2d8ac77970 fuzz: add tests for the I2P Session public interface (Vasil Dimov)
9947e44de0 i2p: use pointers to Sock to accommodate mocking (Vasil Dimov)
82d360b5a8 net: change ConnectSocketDirectly() to take a Sock argument (Vasil Dimov)
b5861100f8 net: add connect() and getsockopt() wrappers to Sock (Vasil Dimov)
5a887d49b2 fuzz: avoid FuzzedSock::Recv() repeated errors with EAGAIN (Vasil Dimov)
3088f83d01 fuzz: extend FuzzedSock::Recv() to support MSG_PEEK (Vasil Dimov)
9b05c49ade fuzz: implement unimplemented FuzzedSock methods (Vasil Dimov)

Pull request description:

  Change the networking code and the I2P code to be fully mockable and use `FuzzedSocket` to fuzz the I2P methods `Listen()`, `Accept()` and `Connect()`.

  Add a mocked `Sock` implementation that returns a predefined data on reads and use it for a regression unit test for the bug fixed in https://github.com/bitcoin/bitcoin/pull/21407.

ACKs for top commit:
  practicalswift:
    Tested ACK 40316a37cb
  MarcoFalke:
    Concept ACK 40316a37cb
  jonatack:
    re-ACK 40316a37cb reviewed `git range-diff 01bb3afb 23c861d 40316a3` and the new unit test commit, debug built, ran unit tests, ran bitcoind with an I2P service and network operation with seven I2P peers (2 in, 5 out) is looking nominal
  laanwj:
    Code review ACK 40316a37cb

Tree-SHA512: 7fc4f129849e16e0c7e16662d9f4d35dfcc369bb31450ee369a2b97bdca95285533bee7787983e881e5a3d248f912afb42b4a2299d5860ace7129b0b19623cc8
2021-03-30 17:41:13 +02:00
Jon Atack
6423c8175f
p2p, refactor: pass and use uint16_t CService::port as uint16_t 2021-03-16 19:52:31 +01:00
Vasil Dimov
82d360b5a8
net: change ConnectSocketDirectly() to take a Sock argument
Change `ConnectSocketDirectly()` to take a `Sock` argument instead of a
bare `SOCKET`. With this, use the `Sock`'s (possibly mocked) methods
`Connect()`, `Wait()` and `GetSockOpt()` instead of calling the OS
functions directly.
2021-03-16 13:58:23 +01:00
Jon Atack
e6bd74b2e5
net: move Doxygen docs from netbase.cpp to netbase.h 2021-03-15 16:53:25 +01:00
Jon Atack
12cc5704db
net: update incorrect Doxygen documentation in netbase.cpp 2021-03-15 16:41:09 +01:00
practicalswift
c6b4bfb4b3 net: Make DNS lookup code testable 2021-03-08 23:17:56 +00:00
practicalswift
366e3e1f89 fuzz: Add FUZZED_SOCKET_FAKE_LATENCY mode to FuzzedSock to allow for fuzzing timeout logic 2021-03-02 21:44:51 +00:00
practicalswift
b22d4c1607 fuzz: Add fuzzing harness for Socks5(...) 2021-03-02 21:43:42 +00:00
Vasil Dimov
a701fcf01f
net: Do not skip the I2P network from GetNetworkNames()
So that help texts include "i2p" in:
* `./bitcoind -help` (in `-onlynet` description)
* `getpeerinfo` RPC
* `getnetworkinfo` RPC

Co-authored-by: Jon Atack <jon@atack.com>
2021-03-01 18:19:47 +01:00
Vasil Dimov
0181e24439
net: recognize I2P from ParseNetwork() so that -onlynet=i2p works 2021-03-01 18:19:47 +01:00
Vasil Dimov
78fdfbea66
net: dedup MSG_NOSIGNAL and MSG_DONTWAIT definitions
Deduplicate `MSG_NOSIGNAL` and `MSG_DONTWAIT` definitions from `net.cpp`
and `netbase.cpp` to `compat.h` where they can also be reused by other
code.
2021-03-01 13:22:17 +01:00
Vasil Dimov
34bcfab562
net: move the constant maxWait out of InterruptibleRecv()
Move `maxWait` out of `InterruptibleRecv()` and rename it to
`MAX_WAIT_FOR_IO` so that it can be reused by other code.
2021-03-01 13:22:17 +01:00
MarcoFalke
489030f2a8
Merge #20965: net, rpc: return NET_UNROUTABLE as not_publicly_routable, automate helps
96635e6177 init: use GetNetworkNames() in -onlynet help (Jon Atack)
0dbde700a6 rpc: use GetNetworkNames() in getnetworkinfo and getpeerinfo helps (Jon Atack)
1c3af37881 net: create GetNetworkNames() (Jon Atack)
b45eae4d53 net: update NET_UNROUTABLE to not_publicly_routable in GetNetworkName() (Jon Atack)

Pull request description:

  per the IRC discussion today at http://www.erisian.com.au/bitcoin-core-dev/log-2021-01-19.html#l-87

  - return a more helpful string name for `Network::NET_UNROUTABLE`: "not_publicly_routable" instead of "unroutable"
  - update the RPC getpeerinfo "network" help, and automate it and the getnetworkinfo "network#name" and the -onlynet help doc generation

ACKs for top commit:
  theStack:
    re-ACK 96635e6177 🌳
  MarcoFalke:
    review ACK 96635e6177 🐗

Tree-SHA512: 511a7d987126b48a7a090739aa7c4964b6186a3ff8f5f7eec9233dd816c6b7a6dc91b3ea6b824aa68f218a8a3ebdc6ffd214e9a88af38f2bf23f3257c4284c3a
2021-02-15 15:31:15 +01:00
Vasil Dimov
7bd21ce1ef
style: rename hSocket to sock
In the arguments of `InterruptibleRecv()`, `Socks5()` and
`ConnectThroughProxy()` the variable `hSocket` was previously of type
`SOCKET`, but has been changed to `Sock`. Thus rename it to `sock` to
imply its type, to distinguish from other `SOCKET` variables and to
abide to the coding style wrt variables' names.
2021-02-10 13:30:09 +01:00
Vasil Dimov
04ae846904
net: use Sock in InterruptibleRecv() and Socks5()
Use the `Sock` class instead of `SOCKET` for `InterruptibleRecv()` and
`Socks5()`.

This way the `Socks5()` function can be tested by giving it a mocked
instance of a socket.

Co-authored-by: practicalswift <practicalswift@users.noreply.github.com>
2021-02-10 13:30:08 +01:00
Vasil Dimov
ba9d73268f
net: add RAII socket and use it instead of bare SOCKET
Introduce a class to manage the lifetime of a socket - when the object
that contains the socket goes out of scope, the underlying socket will
be closed.

In addition, the new `Sock` class has a `Send()`, `Recv()` and `Wait()`
methods that can be overridden by unit tests to mock the socket
operations.

The `Wait()` method also hides the
`#ifdef USE_POLL poll() #else select() #endif` technique from higher
level code.
2021-02-10 13:30:08 +01:00
Vasil Dimov
dec9b5e850
net: move CloseSocket() from netbase to util/sock
Move `CloseSocket()` (and `NetworkErrorString()` which it uses) from
`netbase.{h,cpp}` to newly added `src/util/sock.{h,cpp}`.

This is necessary in order to use `CloseSocket()` from a newly
introduced Sock class (which will live in `src/util/sock.{h,cpp}`).
`sock.{h,cpp}` cannot depend on netbase because netbase will depend
on it.
2021-02-10 13:30:08 +01:00
Vasil Dimov
aa17a44551
net: move MillisToTimeval() from netbase to util/time
Move `MillisToTimeval()` from `netbase.{h,cpp}` to
`src/util/system.{h,cpp}`.

This is necessary in order to use `MillisToTimeval()` from a newly
introduced `src/util/sock.{h,cpp}` which cannot depend on netbase
because netbase will depend on it.
2021-02-10 11:00:12 +01:00
Jon Atack
1c3af37881
net: create GetNetworkNames() 2021-02-02 00:01:36 +01:00
Jon Atack
b45eae4d53
net: update NET_UNROUTABLE to not_publicly_routable in GetNetworkName() 2021-02-02 00:00:39 +01:00
Jon Atack
ba8997fb2e
net: update GetNetworkName() with all enum Network cases 2020-10-15 19:21:38 +02:00
Vasil Dimov
102867c587
net: change CNetAddr::ip to have flexible size
Before this change `CNetAddr::ip` was a fixed-size array of 16 bytes,
not being able to store larger addresses (e.g. TORv3) and encoded
smaller ones as 16-byte IPv6 addresses.

Change its type to `prevector`, so that it can hold larger addresses and
do not disguise non-IPv6 addresses as IPv6. So the IPv4 address
`1.2.3.4` is now encoded as `01020304` instead of
`00000000000000000000FFFF01020304`.

Rename `CNetAddr::ip` to `CNetAddr::m_addr` because it is not an "IP" or
"IP address" (TOR addresses are not IP addresses).

In order to preserve backward compatibility with serialization (where
e.g. `1.2.3.4` is serialized as `00000000000000000000FFFF01020304`)
introduce `CNetAddr` dedicated legacy serialize/unserialize methods.

Adjust `CSubNet` accordingly. Still use `CSubNet::netmask[]` of fixed 16
bytes, but use the first 4 for IPv4 (not the last 4). Only allow
subnetting for IPv4 and IPv6.

Co-authored-by: Carl Dong <contact@carldong.me>
2020-08-24 21:50:59 +02:00
Aaron Hook
1cabbddbca refactor: Use uint16_t instead of unsigned short
removed trailing whitespace to make linter happy
2020-06-22 12:12:22 +02:00
Hennadii Stepanov
78c8f4fe11
refactor: Replace RecursiveMutex with Mutex in netbase.cpp 2020-06-06 17:19:52 +03:00
Wladimir J. van der Laan
1ae46dce60
Merge #17754: net: Don't allow resolving of std::string with embedded NUL characters. Add tests.
7a046cdc14 tests: Avoid using C-style NUL-terminated strings as arguments (practicalswift)
fefb9165f2 tests: Add tests to make sure lookup methods fail on std::string parameters with embedded NUL characters (practicalswift)
9574de86ad net: Avoid using C-style NUL-terminated strings as arguments in the netbase interface (practicalswift)

Pull request description:

  Don't allow resolving of `std::string`:s with embedded `NUL` characters.

  Avoid using C-style `NUL`-terminated strings as arguments in the `netbase` interface

  Add tests.

  The only place in where C-style `NUL`-terminated strings are actually needed is here:

  ```diff
  +    if (!ValidAsCString(name)) {
  +        return false;
  +    }
  ...
  -    int nErr = getaddrinfo(pszName, nullptr, &aiHint, &aiRes);
  +    int nErr = getaddrinfo(name.c_str(), nullptr, &aiHint, &aiRes);
       if (nErr)
           return false;
  ```

  Interface changes:

  ```diff
  -bool LookupHost(const char *pszName, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup);
  +bool LookupHost(const std::string& name, std::vector<CNetAddr>& vIP, unsigned int nMaxSolutions, bool fAllowLookup);

  -bool LookupHost(const char *pszName, CNetAddr& addr, bool fAllowLookup);
  +bool LookupHost(const std::string& name, CNetAddr& addr, bool fAllowLookup);

  -bool Lookup(const char *pszName, CService& addr, int portDefault, bool fAllowLookup);
  +bool Lookup(const std::string& name, CService& addr, int portDefault, bool fAllowLookup);

  -bool Lookup(const char *pszName, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions);
  +bool Lookup(const std::string& name, std::vector<CService>& vAddr, int portDefault, bool fAllowLookup, unsigned int nMaxSolutions);

  -bool LookupSubNet(const char *pszName, CSubNet& subnet);
  +bool LookupSubNet(const std::string& strSubnet, CSubNet& subnet);

  -CService LookupNumeric(const char *pszName, int portDefault = 0);
  +CService LookupNumeric(const std::string& name, int portDefault = 0);

  -bool ConnectThroughProxy(const proxyType &proxy, const std::string& strDest, int port, const SOCKET& hSocketRet, int nTimeout, bool *outProxyConnectionFailed);
  +bool ConnectThroughProxy(const proxyType &proxy, const std::string& strDest, int port, const SOCKET& hSocketRet, int nTimeout, bool& outProxyConnectionFailed);
  ```

  It should be noted that the `ConnectThroughProxy` change (from `bool *outProxyConnectionFailed` to `bool& outProxyConnectionFailed`) has nothing to do with `NUL` handling but I thought it was worth doing when touching this file :)

ACKs for top commit:
  EthanHeilman:
    ACK 7a046cdc14
  laanwj:
    ACK 7a046cdc14

Tree-SHA512: 66556e290db996917b54091acd591df221f72230f6b9f6b167b9195ee870ebef6e26f4cda2f6f54d00e1c362e1743bf56785d0de7cae854e6bf7d26f6caccaba
2020-01-22 20:20:45 +01:00
Ben Woosley
297e098557
Fix doxygen errors
Identified via -Wdocumentation, e.g.:

  ./rpc/rawtransaction_util.h:31:13: error: parameter 'prevTxs' not found in the function declaration [-Werror,-Wdocumentation]
    * @param  prevTxs       Array of previous txns outputs that tx depends on but may not yet be in the block chain
              ^~~~~~~
  ./rpc/rawtransaction_util.h:31:13: note: did you mean 'prevTxsUnival'?
    * @param  prevTxs       Array of previous txns outputs that tx depends on but may not yet be in the block chain
              ^~~~~~~
              prevTxsUnival

  netbase.cpp:766:11: error: parameter 'outProxyConnectionFailed[out]' not found in the function declaration [-Werror,-Wdocumentation]
   * @param outProxyConnectionFailed[out] Whether or not the connection to the
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  netbase.cpp:766:11: note: did you mean 'outProxyConnectionFailed'?
   * @param outProxyConnectionFailed[out] Whether or not the connection to the
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            outProxyConnectionFailed
2020-01-16 18:25:11 -08:00
MarcoFalke
e09c701e01 scripted-diff: Bump copyright of files changed in 2020
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-
2020-01-15 02:18:00 +07:00
MarcoFalke
6cbe620964 scripted-diff: Replace CCriticalSection with RecursiveMutex
-BEGIN VERIFY SCRIPT-
 # Delete outdated alias for RecursiveMutex
 sed -i -e '/CCriticalSection/d'                 ./src/sync.h
 # Replace use of outdated alias with RecursiveMutex
 sed -i -e 's/CCriticalSection/RecursiveMutex/g' $(git grep -l CCriticalSection)
-END VERIFY SCRIPT-
2020-01-15 01:43:46 +07:00
practicalswift
9574de86ad net: Avoid using C-style NUL-terminated strings as arguments in the netbase interface 2020-01-08 12:35:59 +00:00
MarcoFalke
aaaaad6ac9
scripted-diff: Bump copyright of files changed in 2019
-BEGIN VERIFY SCRIPT-
./contrib/devtools/copyright_header.py update ./
-END VERIFY SCRIPT-
2019-12-30 10:42:20 +13:00
randymcmillan
ac831339cb
doc: Fix some misspellings 2019-11-04 04:22:53 -05:00
Karl-Johan Alm
0481fa2584
util: refactor upper/lowercase functions
This includes renaming Downcase() to ToLower() and make it return a string rather than modify referenced arg.
Also adds ToUpper() string version.
2019-08-08 11:35:14 +09:00
tecnovert
a52818cc56
net: Make poll in InterruptibleRecv only filter for POLLIN events.
poll should block until there is data to be read or the timeout expires.

Filtering for the POLLOUT event causes poll to return immediately which leads to high CPU usage when trying to connect to non-responding peers through tor.

Removing POLLOUT matches how select is used when USE_POLL isn't defined.
2019-07-18 13:04:16 +02:00
Carl Dong
c7f6ce74d3
docs: Improve netbase comments
- Improve and add various Lookup* docs
- Improve InterruptibleRecv docs
- Improve Socks5 docs
- Add CreateSocket docs
- Add ConnectSocketDirectly docs
- Add SetNameProxy docs
- Add ConnectThroughProxy docs
- Add LookupSubNet docs
2019-07-15 14:46:15 -04:00
practicalswift
eca9767673 Make reasoning about dependencies easier by not including unused dependencies 2019-06-02 17:15:23 +02:00
Ben Woosley
d0522ec94e
Drop defunct Windows compat fixes
"The AI_ADDRCONFIG flag is defined on the Windows SDK for Windows Vista
and later. The AI_ADDRCONFIG flag is supported on Windows Vista and
later."
https://docs.microsoft.com/en-us/windows/desktop/api/ws2tcpip/nf-ws2tcpip-getaddrinfo

However, the version of MinGW we use on Travis is not current and does
not carry the relevant definition, as such I defined it in compat.
https://github.com/wine-mirror/wine/blob/master/include/ws2tcpip.h

Testing confirms that the PROTECTION_LEVEL_UNRESTRICTED,
IPV6_PROTECTION_LEVEL, PROCESS_DEP_ENABLE, AI_ADDRCONFIG, are now
supported by the version of Windows that we test against, so can be
removed.
https://travis-ci.org/bitcoin/bitcoin/jobs/483255439
https://travis-ci.org/Empact/bitcoin/jobs/484123087
2019-01-24 15:58:49 -08:00
Patrick Strateman
11cc491a28 Implement poll() on systems which support it properly.
This eliminates the restriction on maximum socket descriptor number.
2018-12-03 14:25:51 -05:00
practicalswift
b312cd7707 Add missing locking annotations 2018-11-28 09:36:25 +01:00
Jim Posen
2068f089c8 scripted-diff: Move util files to separate directory.
-BEGIN VERIFY SCRIPT-
mkdir -p src/util
git mv src/util.h src/util/system.h
git mv src/util.cpp src/util/system.cpp
git mv src/utilmemory.h src/util/memory.h
git mv src/utilmoneystr.h src/util/moneystr.h
git mv src/utilmoneystr.cpp src/util/moneystr.cpp
git mv src/utilstrencodings.h src/util/strencodings.h
git mv src/utilstrencodings.cpp src/util/strencodings.cpp
git mv src/utiltime.h src/util/time.h
git mv src/utiltime.cpp src/util/time.cpp

sed -i 's/<util\.h>/<util\/system\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')
sed -i 's/<utilmemory\.h>/<util\/memory\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')
sed -i 's/<utilmoneystr\.h>/<util\/moneystr\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')
sed -i 's/<utilstrencodings\.h>/<util\/strencodings\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')
sed -i 's/<utiltime\.h>/<util\/time\.h>/g' $(git ls-files 'src/*.h' 'src/*.cpp')

sed -i 's/BITCOIN_UTIL_H/BITCOIN_UTIL_SYSTEM_H/g' src/util/system.h
sed -i 's/BITCOIN_UTILMEMORY_H/BITCOIN_UTIL_MEMORY_H/g' src/util/memory.h
sed -i 's/BITCOIN_UTILMONEYSTR_H/BITCOIN_UTIL_MONEYSTR_H/g' src/util/moneystr.h
sed -i 's/BITCOIN_UTILSTRENCODINGS_H/BITCOIN_UTIL_STRENCODINGS_H/g' src/util/strencodings.h
sed -i 's/BITCOIN_UTILTIME_H/BITCOIN_UTIL_TIME_H/g' src/util/time.h

sed -i 's/ util\.\(h\|cpp\)/ util\/system\.\1/g' src/Makefile.am
sed -i 's/utilmemory\.\(h\|cpp\)/util\/memory\.\1/g' src/Makefile.am
sed -i 's/utilmoneystr\.\(h\|cpp\)/util\/moneystr\.\1/g' src/Makefile.am
sed -i 's/utilstrencodings\.\(h\|cpp\)/util\/strencodings\.\1/g' src/Makefile.am
sed -i 's/utiltime\.\(h\|cpp\)/util\/time\.\1/g' src/Makefile.am

sed -i 's/-> util ->/-> util\/system ->/' test/lint/lint-circular-dependencies.sh
sed -i 's/src\/util\.cpp/src\/util\/system\.cpp/g' test/lint/lint-format-strings.py test/lint/lint-locale-dependence.sh
sed -i 's/src\/utilmoneystr\.cpp/src\/util\/moneystr\.cpp/g' test/lint/lint-locale-dependence.sh
sed -i 's/src\/utilstrencodings\.\(h\|cpp\)/src\/util\/strencodings\.\1/g' test/lint/lint-locale-dependence.sh
sed -i 's/src\\utilstrencodings\.cpp/src\\util\\strencodings\.cpp/' build_msvc/libbitcoinconsensus/libbitcoinconsensus.vcxproj
-END VERIFY SCRIPT-
2018-11-04 22:46:07 -08:00
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