6e68ccbefe net: use Sock::WaitMany() instead of CConnman::SocketEvents() (Vasil Dimov)
ae263460ba net: introduce Sock::WaitMany() (Vasil Dimov)
cc74459768 net: also wait for exceptional events in Sock::Wait() (Vasil Dimov)
Pull request description:
_This is a piece of #21878, chopped off to ease review._
`Sock::Wait()` waits for IO events on one socket. Introduce a similar `virtual` method `WaitMany()` that waits simultaneously for IO events on more than one socket.
Use `WaitMany()` instead of `CConnman::SocketEvents()` (and ditch the latter). Given that the former is a `virtual` method, it can be mocked by unit and fuzz tests. This will help to make bigger parts of `CConnman` testable (unit and fuzz).
ACKs for top commit:
laanwj:
Code review ACK 6e68ccbefe
jonatack:
re-ACK 6e68ccbefe per `git range-diff e18fd47 6747729 6e68ccb`, and verified rebase to master and debug build
Tree-SHA512: 917fb6ad880d64d3af1ebb301c06fbd01afd8ff043f49e4055a088ebed6affb7ffe1dcf59292d822f10de5f323b6d52d557cb081dd7434634995f9148efcf08f
If we self-advertised to an inbound peer with the address they gave us,
nTime was left default-initialized, so that our peer wouldn't relay it
any further along.
ce893c0497 doc: Update developer notes (Anthony Towns)
d2852917ee sync.h: Imply negative assertions when calling LOCK (Anthony Towns)
bba87c0553 scripted-diff: Convert global Mutexes to GlobalMutexes (Anthony Towns)
a559509a0b sync.h: Add GlobalMutex type (Anthony Towns)
be6aa72f9f qt/clientmodel: thread safety annotation for m_cached_tip_mutex (Anthony Towns)
f24bd45b37 net_processing: thread safety annotation for m_tx_relay_mutex (Anthony Towns)
Pull request description:
This changes `LOCK(mutex)` for non-global, non-recursive mutexes to be annotated with the negative capability for the mutex it refers to, to prevent . clang applies negative capabilities recursively, so this helps avoid forgetting to annotate functions.
This can't reasonably be used for globals, because clang would require every function to be annotated with `EXCLUSIVE_LOCKS_REQUIRED(!g_mutex)` for each global mutex; so this introduces a trivial `GlobalMutex` subclass of `Mutex`, and reduces the annotations for both `GlobalMutex` to `LOCKS_EXCLUDED` which only catches trivial errors (eg (`LOCK(x); LOCK(x);`).
ACKs for top commit:
MarcoFalke:
review ACK ce893c0497🐦
hebasto:
ACK ce893c0497
Tree-SHA512: 5c35e8c7677ce3d994a7e3774f4344adad496223a51b3a1d1d3b5f20684b2e1d5cff688eb3fbc8d33e1b9940dfa76e515f9434e21de6f3ce3c935e29a319f529
Rename `GenerateSelectSet()` to `GenerateWaitSockets()` and adapt it to
generate a wait data suitable for `Sock::WaitMany()`. Then call it from
`CConnman::SocketHandler()` and feed the generated data to
`Sock::WaitMany()`.
This way `CConnman::SocketHandler()` can be unit tested because
`Sock::WaitMany()` is mockable, so the usage of real sockets can be
avoided.
Resolves https://github.com/bitcoin/bitcoin/issues/21744
292828cd77 [test] Test addr cache for multiple onion binds (dergoegge)
3382905bef [net] Seed addr cache randomizer with port from binding address (dergoegge)
f10e80b6e4 [net] Use ConnectedThroughNetwork() instead of GetNetwork() to seed addr cache randomizer (dergoegge)
Pull request description:
The addr cache id randomizer is currently supposed to be seeded with the network of the inbound connection and the local socket (only the address is used not the port): a8098f2cef/src/net.cpp (L2800-L2804)
For inbound onion connections `CNode::addr.GetNetwork()` returns `NET_UNROUTABLE` and `CNode::addrBind` is set to `127.0.0.1:<onion bind port>`. This results in the same addr cache for all inbound connections on 127.0.0.1 binds.
To avoid the same addr cache across all onion and other 127.0.0.1 binds, we should seed the addr cache randomizer with the correct network for inbound onion connections (using `CNode::ConnectedThroughNetwork()`) as well as the port of `CNode::addrBind`.
ACKs for top commit:
sipa:
utACK 292828cd77
mzumsande:
Code Review ACK 292828cd77
naumenkogs:
utACK 292828cd77
Tree-SHA512: d0be13bab6bc121c2926d4b168687f6c2ed4ce0c9dd19be71eb4886adeba8afc3daacdc4e232a0ba3b03a89d69b618abc5595b69abd1ad0c476d825bc6ea1f9f
This is more consistent with the other functions, as well as with the
logging output itself. If we want to make this change, we should do it
before it's all over the place.
e11cdc9303 logging: Add log severity level to net.cpp (klementtan)
a8290649a6 logging: Add severity level to logs. (klementtan)
Pull request description:
**Overview**: This PR introduces a new macro, `LogPrintLevel`, that allows developers to add logs with the severity level. Additionally, it will also print the log category if it is specified.
Sample log:
```
2022-03-04T16:41:15Z [opencon] [net:debug] trying connection XX.XX.XXX.XXX:YYYYY lastseen=2.7hrs
```
**Motivation**: This feature was suggested in #20576 and I believe that it will bring the following benefits:
* Allow for easier filtering of logs in `debug.log`
* Can be extended to allow users to select the minimum level of logs they would like to view (not in the scope of this PR)
**Details**:
* New log format. `... [category:level]...`. ie:
* Do not print category if `category == NONE`
* Do not print level if `level == NONE`
* If `category == NONE` and `level == NONE`, do not print any fields (current behaviour)
* Previous logging functions:
* `LogPrintf`: no changes in log as it calls `LogPrintf_` with `category = NONE` and `level = NONE`
* `LogPrint`: prints additional `[category]` field as it calls `LogPrintf_` with `category = category` and `level = NONE`
* `net.cpp`: As a proof of concept, updated logs with obvious severity (ie prefixed with `Warning/Error:..`) to use the new logging with severity.
**Testing**:
* Compiling and running `bitcoind` with this PR should instantly display logs with the category name (ie `net/tor/...`)
* Grepping for `net:debug` in `debug.log` should display the updated logs with severity level:
<details>
<summary>Code</summary>
```
$ grep "net:debug" debug.log
2022-03-04T16:41:15Z [opencon] [net:debug] trying connection XXX:YYY lastseen=2.7hrs
2022-03-04T16:41:16Z [opencon] [net:debug] trying connection XXX:YYY lastseen=16.9hrs
2022-03-04T16:41:17Z [opencon] [net:debug] trying connection XXX:YYY lastseen=93.2hrs
2022-03-04T16:41:18Z [opencon] [net:debug] trying connection XXX:YYY lastseen=2.7hrs
```
</details>
ACKs for top commit:
laanwj:
Code review and lightly tested ACK e11cdc9303
Tree-SHA512: 89a8c86667ccc0688e5acfdbd399aac1f5bec9f978a160e40b0210b0d9b8fdc338479583fc5bd2e2bc785821363f174f578d52136d228e8f638a20abbf0a568f
where all the other logging actions in src/net.{h,cpp} are located.
StartExtraBlockRelayPeers() does not appear to be a hotspot that needs to be
inlined for performance, as it is called from CheckForStaleTipAndEvictPeers(),
called in turn from StartScheduledTasks() with a scheduleEvery delta of 45
seconds, called at the end of AppInitMain() on bitcoind startup.
This allows dropping `#include <logging.h>` from net.h, which can improve
compile time/speed. Currently, none of the other includes in net.h use
logging.h, except src/sync.h if DEBUG_LOCKCONTENTION is defined.
ab1ea29ba1 refactor: make GetRand a template, remove GetRandInt (pasta)
Pull request description:
makes GetRand a template for which any integral type can be used, where the default behavior is to return a random integral up to the max of the integral unless a max is provided.
This simplifies a lot of code from GetRand(std::numeric_limits<uint64_t>::max() -> GetRand<uint64_t>()
ACKs for top commit:
laanwj:
Code review ACK ab1ea29ba1
Tree-SHA512: db5082a0e21783389f1be898ae73e097b31ab48cab1a2c0e29348a4adeb545d4098193aa72a547c6baa6e8205699aafec38d6a27b3d65522fb3246f91b4daae9
e71c51b27d refactor: rename command -> message type in comments in the src/net* files (Shashwat)
2b09593bdd scripted-diff: Rename message command to message type (Shashwat)
Pull request description:
This PR is a follow-up to #24078.
> a message is not a command, but simply a message of some type
The first commit covers the message_command variable name and comments not addressed in the original PR in `src/net*` files.
The second commit goes beyond the original `src/net*` limit of #24078 and does similar changes in the `src/rpc/net.cpp` file.
ACKs for top commit:
MarcoFalke:
review ACK e71c51b27d💥
Tree-SHA512: 24015d132c00f15239e5d3dc7aedae904ae3103a90920bb09e984ff57723402763f697d886322f78e42a0cb46808cb6bc9d4905561dc6ddee9961168f8324b05
f64aa9c411 Disallow more unsafe string->path conversions allowed by path append operators (Ryan Ofsky)
Pull request description:
Add more `fs::path` `operator/` and `operator+` overloads to prevent unsafe string->path conversions on Windows that would cause strings to be decoded according to the current Windows locale & code page instead of the correct string encoding.
Update application code to deal with loss of implicit string->path conversions by calling `fs::u8path` or `fs::PathFromString` explicitly, or by just changing variable types from `std::string` to `fs::path` to avoid conversions altogether, or make them happen earlier.
In all cases, there's no change in behavior either (1) because strings only contained ASCII characters and would be decoded the same regardless of what encoding was used, or (2) because of the 1:1 mapping between paths and strings using the `PathToString` and `PathFromString` functions.
Motivation for this PR was just that I was experimenting with #24469 and noticed that operations like `fs::path / std::string` were allowed, and I thought it would be better not to allow them.
ACKs for top commit:
hebasto:
ACK f64aa9c411
Tree-SHA512: 944cce49ed51537ee7a35ea4ea7f5feaf0c8fff2fa67ee81ec5adebfd3dcbaf41b73eb35e49973d5f852620367f13506fd12a7a9b5ae3a7a0007414d5c9df50f
709af67add p2p: replace RecursiveMutex `m_total_bytes_sent_mutex` with Mutex (w0xlt)
8be75fd0f0 p2p: add assertions and negative TS annotations for `m_total_bytes_sent_mutex` (w0xlt)
a237a065cc scripted-diff: rename cs_totalBytesSent -> m_total_bytes_sent_mutex (w0xlt)
Pull request description:
Related to #19303, this PR gets rid of the RecursiveMutex `cs_totalBytesSent` and also adds `AssertLockNotHeld` macros combined with `LOCKS_EXCLUDED` thread safety annotations to avoid recursive locking.
ACKs for top commit:
jonatack:
ACK 709af67add per `git range-diff 7a4ac71 eff7918 709af67`, rebase to master, clang 15 debug build, and build with -Wthread-safety-negative
vasild:
ACK 709af67add
hebasto:
ACK 709af67add, tested on Ubuntu 22.04.
Tree-SHA512: 560b4e6c92b1511911d69185207df6ee809db09b96d97f96430d8d2595dc05c98cc691aaec8a58ef87cf2ab0a98675c210b8ce0be3dedb81e31114bbbfdfd8be
36f814c0e8 [netgroupman] Remove NetGroupManager::GetAsmap() (John Newbery)
4709fc2019 [netgroupman] Move asmap checksum calculation to NetGroupManager (John Newbery)
1b978a7e8c [netgroupman] Move GetMappedAS() and GetGroup() logic to NetGroupManager (John Newbery)
ddb4101e63 [net] Only use public CNetAddr functions and data in GetMappedAS() and GetGroup() (John Newbery)
6b2268162e [netgroupman] Add GetMappedAS() and GetGroup() (John Newbery)
19431560e3 [net] Move asmap into NetGroupManager (John Newbery)
17c24d4580 [init] Add netgroupman to node.context (John Newbery)
9b3836710b [build] Add netgroup.cpp|h (John Newbery)
Pull request description:
The asmap data is currently owned by addrman, but is used by both addrman and connman. #22791 made the data const and private (so that it can't be updated by other components), but it is still passed out of addrman as a reference to const, and used by `CNetAddress` to calculate the group and AS of the net address.
This RFC PR proposes to move all asmap data and logic into a new `NetGroupManager` component. This is initialized at startup, and the client components addrman and connman simply call `NetGroupManager::GetGroup(const CAddress&)` and `NetGroupManager::GetMappedAS(const CAddress&)` to get the net group and AS of an address.
ACKs for top commit:
mzumsande:
Code Review ACK 36f814c0e8
jnewbery:
CI failure seems spurious. I rebased onto latest master to trigger a new CI run, but whilst I was doing that, mzumsande ACKed 36f814c0e8, so I've reverted to that.
dergoegge:
Code review ACK 36f814c0e8
Tree-SHA512: 244a89cdfd720d8cce679eae5b7951e1b46b37835fccb6bdfa362856761bb110e79e263a6eeee8246140890f3bee2850e9baa7bc14a388a588e0e29b9d275175
Add more fs::path operator/ and operator+ overloads to prevent unsafe
string->path conversions on Windows that would cause strings to be
decoded according to the current Windows locale & code page instead of
the correct string encoding.
Update application code to deal with loss of implicit string->path
conversions by calling fs::u8path or fs::PathFromString explicitly, or
by just changing variable types from std::string to fs::path to avoid
conversions altoghther, or make them happen earlier.
In all cases, there's no change in behavior either (1) because strings
only contained ASCII characters and would be decoded the same regardless
of what encoding was used, or (2) because of the 1:1 mapping between
paths and strings using the PathToString and PathFromString functions.
Co-authored-by: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
We'll move the transaction relay data into Peer in subsequent commits,
but the inbound eviction logic needs to know if the peer is relaying
txs and if the peer has loaded a bloom filter.
This is currently redundant information with m_tx_relay->fRelayTxes,
but when m_tx_relay is moved into net_processing, then we'll need these
separate fields in CNode.
`GetListenPort()` uses a simple logic: "if `-port=P` is given, then we
must be listening on `P`, otherwise we must be listening on `8333`".
This is however not true if `-bind=` has been provided with `:port` part
or if `-whitebind=` has been provided. Thus, extend `GetListenPort()` to
return the port from `-bind=` or `-whitebind=`, if any.
Fixes https://github.com/bitcoin/bitcoin/issues/20184 (cases 1. 2. 3. 5.)
Rename `CaptureMessage()` to `CaptureMessageToFile()` and introduce a
`std::function` variable called `CaptureMessage` whose value can be
changed by unit tests, should they need to inspect message contents.
b7be28cac5 test: add combined CJDNS/I2P/localhost/onion eviction protection tests (Jon Atack)
0a1bb84770 test: add tests for inbound eviction protection of CJDNS peers (Jon Atack)
0c00c0c981 test: fix off-by-one logic in an eviction protection test (Jon Atack)
f7b8094d61 p2p: extend inbound eviction protection by network to CJDNS peers (Jon Atack)
Pull request description:
Extend inbound eviction protection for peers connected over CJDNS, as is the case for peers connected via onion, localhost, and I2P since #21261 and #20197. CJDNS peers seem to have better min ping latency than onion and I2P peers but still higher than that of unencrypted IPv4/6 peers and can be disadvantaged under our eviction criteria. They are also very few in number, which is a further reason to protect them, as the goal of this logic is to favorise the diversity of our peer connections. CJDNS support was added in #23077 for the upcoming v23 release.
ACKs for top commit:
laanwj:
Concept and code review ACK b7be28cac5
w0xlt:
tACK b7be28c
Tree-SHA512: 89ebdd217602e16ae14b9bd0d5a25fc09f9b2384c951f820bc0f5a6d8452bbc9042065db817d5d5296c0ad22988491a83fc5b9a611e660c40ebd4f03448c4061
36ee76d1af net: remove unused CNetAddr::GetHash() (Vasil Dimov)
d0abce9a50 net: include the port when deciding a relay destination (Vasil Dimov)
2e38a0e686 net: add CServiceHash constructor so the caller can provide the salts (Vasil Dimov)
97208634b9 net: open p2p connections to nodes that listen on non-default ports (Vasil Dimov)
Pull request description:
By default, for mainnet, the p2p listening port is 8333. Bitcoin Core
has a strong preference for only connecting to nodes that listen on that
port.
Remove that preference because connections over clearnet that involve
port 8333 make it easy to detect, analyze, block or divert Bitcoin p2p
traffic before the connection is even established (at TCP SYN time).
For further justification see the OP of:
https://github.com/bitcoin/bitcoin/pull/23306
ACKs for top commit:
laanwj:
Concept and light code review ACK 36ee76d1af
prayank23:
ACK 36ee76d1af
stickies-v:
tACK 36ee76d1a
jonatack:
ACK 36ee76d1af
glozow:
utACK 36ee76d1af
Tree-SHA512: 7f45ab7567c51c19fc50fabbaf84f0cc8883a8eef84272b76435c014c31d89144271d70dd387212cc1114213165d76b4d20a5ddb8dbc958fe7e74e6ddbd56d11
0eea83a85e scripted-diff: rename `proxyType` to `Proxy` (Vasil Dimov)
e53a8505db net: respect -onlynet= when making outbound connections (Vasil Dimov)
Pull request description:
Do not make outbound connections to hosts which belong to a network
which is restricted by `-onlynet`.
This applies to hosts that are automatically chosen to connect to and to
anchors.
This does not apply to hosts given to `-connect`, `-addnode`,
`addnode` RPC, dns seeds, `-seednode`.
Fixes https://github.com/bitcoin/bitcoin/issues/13378
Fixes https://github.com/bitcoin/bitcoin/issues/22647
Supersedes https://github.com/bitcoin/bitcoin/pull/22651
ACKs for top commit:
naumenkogs:
utACK 0eea83a85e
prayank23:
reACK 0eea83a85e
jonatack:
ACK 0eea83a85e code review, rebased to master, debug built, and did some manual testing with various config options on signet
Tree-SHA512: 37d68b449dd6d2715843fc84d85f48fa2508be40ea105a7f4a28443b318d0b6bd39e3b2ca2a6186f2913836adf08d91038a8b142928e1282130f39ac81aa741b
By default, for mainnet, the p2p listening port is 8333. Bitcoin Core
has a strong preference for only connecting to nodes that listen on that
port.
Remove that preference because connections over clearnet that involve
port 8333 make it easy to detect, analyze, block or divert Bitcoin p2p
traffic before the connection is even established (at TCP SYN time).
For further justification see the OP of:
https://github.com/bitcoin/bitcoin/pull/23306
ef5014d256 style: wrap long lines in CNode creation and add some comments (Vasil Dimov)
b683491648 scripted-diff: rename CNode::cs_hSocket to CNode::m_sock_mutex (Vasil Dimov)
c41a1162ac net: use Sock in CNode (Vasil Dimov)
c5dd72e146 fuzz: move FuzzedSock earlier in src/test/fuzz/util.h (Vasil Dimov)
Pull request description:
_This is a piece of #21878, chopped off to ease review._
Change `CNode` to use a pointer to `Sock` instead of a bare `SOCKET`.
This will help mocking / testing / fuzzing more code.
ACKs for top commit:
jonatack:
re-ACK ef5014d256 changes since last review are the removal of an unneeded dtor and the addition of a style commit
w0xlt:
reACK ef5014d
PastaPastaPasta:
utACK ef5014d256, I have reviewed the code, and believe it makes sense to merge
theStack:
Cod-review ACK ef5014d256
Tree-SHA512: 7f5414dd339cd2f16f7cbdc5fcec238d68b6d50072934aea10b901f409da28ff1ece6db6e899196616aa8127b8b25ab5b86d000bdcee58b4cadd7a3c1cf560c5
Warning: Replacing fs::system_complete calls with fs::absolute calls
in this commit may cause minor changes in behaviour because fs::absolute
no longer strips trailing slashes; however these changes are believed to
be safe.
Co-authored-by: Russell Yanofsky <russ@yanofsky.org>
Co-authored-by: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
