Allow the callers of `CreateSock()` to pass all 3 arguments to the
`socket(2)` syscall. This makes it possible to create sockets of
any domain/type/protocol.
b3efb48673 protocol: make message types constexpr (Vasil Dimov)
2fa9de06c2 net: make the list of known message types a compile time constant (Vasil Dimov)
Pull request description:
Turn the `std::vector` to `std::array` because it is cheaper and allows us to have the number of the messages as a compile time constant: `ALL_NET_MESSAGE_TYPES.size()` which can be used in future code to build other `std::array`s with that size.
---
This change is part of https://github.com/bitcoin/bitcoin/pull/29418 but it makes sense on its own and would be good to have it, regardless of the fate of https://github.com/bitcoin/bitcoin/pull/29418. Also, if this is merged, that would reduce the size of https://github.com/bitcoin/bitcoin/pull/29418, thus the current standalone PR.
ACKs for top commit:
achow101:
ACK b3efb48673
jonatack:
ACK b3efb48673
maflcko:
utACK b3efb48673🎊
willcl-ark:
ACK b3efb48673
Tree-SHA512: 6d3860c138c64514ebab13d97ea67893e2d346dfac30a48c3d9bc769a1970407375ea4170afdb522411ced306a14a9af4eede99e964d1fb1ea3efff5d5eb57af
d0b047494c test: add GetAddedNodeInfo() CJDNS regression unit test (Jon Atack)
684da97070 p2p, bugfix: detect addnode cjdns peers in GetAddedNodeInfo() (Jon Atack)
Pull request description:
Addnode peers connected to us via the cjdns network are currently not detected by `CConnman::GetAddedNodeInfo()`, i.e. `fConnected` is always false. This causes the following issues:
- RPC `getaddednodeinfo` incorrectly shows them as not connected
- `CConnman::ThreadOpenAddedConnections()` continually retries to connect them
Fix the issue and add a unit regression test. Extracted from #28248. Suggest running the test with:
`./src/test/test_bitcoin -t net_peer_connection_tests -l test_suite`
ACKs for top commit:
mzumsande:
utACK d0b047494c
brunoerg:
crACK d0b047494c
pinheadmz:
ACK d0b047494c
Tree-SHA512: a4d81425f79558f5792585611f3fe8ab999b82144daeed5c3ec619861c69add934c2b2afdad24c8488a0ade94f5ce8112f5555d60a1ce913d4f5a1cf5dbba55a
8d491ae9ec serialization: Add ParamsStream GetStream() method (Ryan Ofsky)
951203bcc4 net: Simplify ParamsStream usage (Ryan Ofsky)
e6794e475c serialization: Accept multiple parameters in ParamsStream constructor (Ryan Ofsky)
cb28849a88 serialization: Reverse ParamsStream constructor order (Ryan Ofsky)
83436d14f0 serialization: Drop unnecessary ParamsStream references (Ryan Ofsky)
84502b755b serialization: Drop references to GetVersion/GetType (Ryan Ofsky)
f3a2b52376 serialization: Support for multiple parameters (Ryan Ofsky)
Pull request description:
Currently it is only possible to attach one serialization parameter to a stream at a time. For example, it is not possible to set a parameter controlling the transaction format and a parameter controlling the address format at the same time because one parameter will override the other.
This limitation is inconvenient for multiprocess code since it is not possible to create just one type of stream and serialize any object to it. Instead it is necessary to create different streams for different object types, which requires extra boilerplate and makes using the new parameter fields a lot more awkward than the older version and type fields.
Fix this problem by allowing an unlimited number of serialization stream parameters to be set, and allowing them to be requested by type. Later parameters will still override earlier parameters, but only if they have the same type.
For an example of different ways multiple parameters can be set, see the new [`with_params_multi`](40f505583f/src/test/serialize_tests.cpp (L394-L410)) unit test.
This change requires replacing the `stream.GetParams()` method with a `stream.GetParams<T>()` method in order for serialization code to retrieve the desired parameters. The change is more verbose, but probably a good thing for readability because previously it could be difficult to know what type the `GetParams()` method would return, and now it is more obvious.
---
This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/issues/28722).
ACKs for top commit:
maflcko:
ACK 8d491ae9ec🔵
sipa:
utACK 8d491ae9ec
TheCharlatan:
ACK 8d491ae9ec
Tree-SHA512: 40b7041ee01c0372b1f86f7fd6f3b6af56ef24a6383f91ffcedd04d388e63407006457bf7ed056b0e37b4dec9ffd5ca006cb8192e488ea2c64678567e38d4647
Addnode (manual) peers connected to us via the cjdns network are currently not
detected by CConnman::GetAddedNodeInfo(), i.e. fConnected is always false.
This causes the following issues:
- RPC `getaddednodeinfo` incorrectly shows them as not connected
- CConnman::ThreadOpenAddedConnections() continually retries to connect them
fa09451f8e Add lint check for bitcoin-config.h include IWYU pragma (MarcoFalke)
dddd40ba82 scripted-diff: Add IWYU pragma keep to bitcoin-config.h includes (MarcoFalke)
Pull request description:
The `bitcoin-config.h` includes have issues:
* The header is incompatible with iwyu, because symbols may be defined or not defined. So the `IWYU pragma: keep` is needed to keep the include when a symbol is not defined on a platform. Compare the previous discussion in https://github.com/bitcoin/bitcoin/pull/29408#issuecomment-1948959711
* Guarding the includes by `HAVE_CONFIG_H` is verbose and brittle. Now that all build config dependencies have been removed from low level headers, the benefits are questionable, and the guard can be removed. The linter could also be tricked by guarding the include by `#if defined(HAVE_C0NFIG_H)` (`O` replaced by `0`). Compare the previous discussion in https://github.com/bitcoin/bitcoin/pull/29404#discussion_r1483189853 .
ACKs for top commit:
achow101:
ACK fa09451f8e
TheCharlatan:
ACK fa09451f8e
hebasto:
re-ACK fa09451f8e, only rebased since my recent [review](https://github.com/bitcoin/bitcoin/pull/29494#pullrequestreview-2028864535) (`timedata.cpp` removed in https://github.com/bitcoin/bitcoin/pull/29623).
Tree-SHA512: 47cb973f7f24bc625acc4e78683371863675d186780236d55d886cf4130e05a78bb04f1d731aae7088313b8e963a9677cc77cf518187dbd99d776f6421ca9b52
a68fed111b net: Fix misleading comment for Discover (laanwj)
7766dd280d net: Replace ifname check with IFF_LOOPBACK in Discover (laanwj)
Pull request description:
Checking the interface name is kind of brittle. In the age of network namespaces and containers, there is no reason a loopback interface can't be called differently.
Check for the `IFF_LOOPBACK` flag to detect loopback interface instead.
Also remove a misleading comment in Discover's doc comment.
ACKs for top commit:
sipa:
utACK a68fed111b
willcl-ark:
utACK a68fed111b
theuni:
utACK a68fed111b. Satoshi-era brittleness :)
Tree-SHA512: e2d7fc541f40f6a6af08286e7bcb0873ff55debdcd8b38b03f274897b673a6fb51d84d6c7241a02a9567ddf2645f50231d91bb1f55307ba7c6e68196c29b0edf
82f41d76f1 Added seednode prioritization message to help output (tdb3)
3120a4678a Gives seednode priority over dnsseed if both are provided (Sergi Delgado Segura)
Pull request description:
This is a follow-up of #27577
If both `seednode` and `dnsseed` are provided, the node will start a race between them in order to fetch data to feed the `addrman`.
This PR gives priority to `seednode` over `dnsseed` so if some nodes are provided as seeds, they can be tried before defaulting to the `dnsseeds`
ACKs for top commit:
davidgumberg:
untested reACK 82f41d76f1
itornaza:
tested re-ACK 82f41d76f1
achow101:
ACK 82f41d76f1
cbergqvist:
ACK 82f41d76f1
Tree-SHA512: 4e39e10a7449af6cd9b8f9f6878f846b94bca11baf89ff2d4fbcd4f28293978a6ed71a3a86cea36d49eca891314c834e32af93f37a09c2cc698a878f84d31c62
c6be144c4b Remove timedata (stickies-v)
92e72b5d0d [net processing] Move IgnoresIncomingTxs to PeerManagerInfo (dergoegge)
7d9c3ec622 [net processing] Introduce PeerManagerInfo (dergoegge)
ee178dfcc1 Add TimeOffsets helper class (stickies-v)
55361a15d1 [net processing] Use std::chrono for type-safe time offsets (stickies-v)
038fd979ef [net processing] Move nTimeOffset to net_processing (dergoegge)
Pull request description:
[An earlier approach](1d226ae1f9/) in #28956 involved simplifying and refactoring the network-adjusted time calculation logic, but this was eventually [left out](https://github.com/bitcoin/bitcoin/pull/28956#issuecomment-1904214370) of the PR to make it easier for reviewers to focus on consensus logic changes.
Since network-adjusted time is now only used for warning/informational purposes, cleaning up the logic (building on @dergoegge's approach in #28956) should be quite straightforward and uncontroversial. The main changes are:
- Previously, we would only calculate the time offset from the first 199 outbound peers that we connected to. This limitation is now removed, and we have a proper rolling calculation. I've reduced the set to 50 outbound peers, which seems plenty.
- Previously, we would automatically use the network-adjusted time if the difference was < 70 mins, and warn the user if the difference was larger than that. Since there is no longer any automated time adjustment, I've changed the warning threshold to ~~20~~ 10 minutes (which is an arbitrary number).
- Previously, a warning would only be raised once, and then never again until node restart. This behaviour is now updated to 1) warn to log for every new outbound peer for as long as we appear out of sync, 2) have the RPC warning toggled on/off whenever we go in/out of sync, and 3) have the GUI warn whenever we are out of sync (again), but limited to 1 messagebox per 60 minutes
- no more globals
- remove the `-maxtimeadjustment` startup arg
Closes #4521
ACKs for top commit:
sr-gi:
Re-ACK [c6be144](c6be144c4b)
achow101:
reACK c6be144c4b
dergoegge:
utACK c6be144c4b
Tree-SHA512: 1063d639542e882186cdcea67d225ad1f97847f44253621a8c4b36c4d777e8f5cb0efe86bc279f01e819d33056ae4364c3300cc7400c087fb16c3f39b3e16b96
Checking the interface name is kind of brittle. In the age of network
namespaces and containers, there is no reason a loopback interface can't
be called differently.
Check for the `IFF_LOOPBACK` flag to detect loopback interface instead.
fd81a37239 net: attempts to connect to all resolved addresses when connecting to a node (Sergi Delgado Segura)
Pull request description:
This is a follow-up of #28155 motivated by https://github.com/bitcoin/bitcoin/pull/28155#discussion_r1362677038
## Rationale
Prior to this, when establishing a network connection via `CConnman::ConnectNode`, if the connection needed address resolution, a single address would be picked at random from the resolved addresses and our node would try to connect to it. However, this would lead to the behavior of `ConnectNode` being unpredictable when the address was resolved to various ips (e.g. the address resolving to IPv4 and IPv6, but we only support one of them).
This patches the aforementioned behavior by going over all resolved IPs until a valid one is found or until we
exhaust them.
ACKs for top commit:
mzumsande:
re-ACK fd81a37239 (just looked at diff, only small logging change)
achow101:
ACK fd81a37239
vasild:
ACK fd81a37239
Tree-SHA512: fa1ebc5c84fe61dd0a7fe1113ae2d594a75ad661c43ed8984a31fc9bc50f166b2759b0d8d84ee5dc247691eff78c8156fac970af797bbcbf67492eec0353fb58
Prior to this, when establishing a network connection via CConnman::ConnectNode,
if the connection needed address resolution, a single address would be picked
at random from the resolved addresses and our node will try to connect to it. However,
this would lead to the behavior of ConnectNode being unpredictable when the address
was resolved to various ips (e.g. the address resolving to IPv4 and IPv6, but we only
support one of them).
This patches the aforementioned behavior by going over all resolved IPs until we find one
we can connect to or until we exhaust them.
Limit number of IPs learned from a single DNS seed to 32, to prevent the results from
one DNS seed from dominating AddrMan. Note that the number of results from a UDP DNS query is
bounded to 33 already, but it is possible for it to use TCP where a potentially enormous
number of results can be returned.
Closes #16070.
567cec9a05 doc: add release notes and help text for unix sockets (Matthew Zipkin)
bfe5192891 test: cover UNIX sockets in feature_proxy.py (Matthew Zipkin)
c65c0d0163 init: allow UNIX socket path for -proxy and -onion (Matthew Zipkin)
c3bd43142e gui: accomodate unix socket Proxy in updateDefaultProxyNets() (Matthew Zipkin)
a88bf9dedd i2p: construct Session with Proxy instead of CService (Matthew Zipkin)
d9318a37ec net: split ConnectToSocket() from ConnectDirectly() for unix sockets (Matthew Zipkin)
ac2ecf3182 proxy: rename randomize_credentials to m_randomize_credentials (Matthew Zipkin)
a89c3f59dc netbase: extend Proxy class to wrap UNIX socket as well as TCP (Matthew Zipkin)
3a7d6548ef net: move CreateSock() calls from ConnectNode() to netbase methods (Matthew Zipkin)
74f568cb6f netbase: allow CreateSock() to create UNIX sockets if supported (Matthew Zipkin)
bae86c8d31 netbase: refactor CreateSock() to accept sa_family_t (Matthew Zipkin)
adb3a3e51d configure: test for unix domain sockets (Matthew Zipkin)
Pull request description:
Closes https://github.com/bitcoin/bitcoin/issues/27252
UNIX domain sockets are a mechanism for inter-process communication that are faster than local TCP ports (because there is no need for TCP overhead) and potentially more secure because access is managed by the filesystem instead of serving an open port on the system.
There has been work on [unix domain sockets before](https://github.com/bitcoin/bitcoin/pull/9979) but for now I just wanted to start on this single use-case which is enabling unix sockets from the client side, specifically connecting to a local Tor proxy (Tor can listen on unix sockets and even enforces strict curent-user-only access permission before binding) configured by `-onion=` or `-proxy=`
I copied the prefix `unix:` usage from Tor. With this patch built locally you can test with your own filesystem path (example):
`tor --SocksPort unix:/Users/matthewzipkin/torsocket/x`
`bitcoind -proxy=unix:/Users/matthewzipkin/torsocket/x`
Prep work for this feature includes:
- Moving where and how we create `sockaddr` and `Sock` to accommodate `AF_UNIX` without disturbing `CService`
- Expanding `Proxy` class to represent either a `CService` or a UNIX socket (by its file path)
Future work:
- Enable UNIX sockets for ZMQ (https://github.com/bitcoin/bitcoin/pull/27679)
- Enable UNIX sockets for I2P SAM proxy (some code is included in this PR but not tested or exposed to user options yet)
- Enable UNIX sockets on windows where supported
- Update Network Proxies dialog in GUI to support UNIX sockets
ACKs for top commit:
Sjors:
re-ACK 567cec9a05
tdb3:
re ACK for 567cec9a05.
achow101:
ACK 567cec9a05
vasild:
ACK 567cec9a05
Tree-SHA512: de81860e56d5de83217a18df4c35297732b4ad491e293a0153d2d02a0bde1d022700a1131279b187ef219651487537354b9d06d10fde56225500c7e257df92c1
0a533613fb docs: add release notes for #27114 (brunoerg)
e6b8f19de9 test: add coverage for whitelisting manual connections (brunoerg)
c985eb854c test: add option to speed up tx relay/mempool sync (brunoerg)
66bc6e2d17 Accept "in" and "out" flags to -whitelist to allow whitelisting manual connections (Luke Dashjr)
8e06be347c net_processing: Move extra service flag into InitializeNode (Luke Dashjr)
9133fd69a5 net: Move `NetPermissionFlags::Implicit` verification to `AddWhitelistPermissionFlags` (Luke Dashjr)
2863d7dddb net: store `-whitelist{force}relay` values in `CConnman` (brunoerg)
Pull request description:
Revives #17167. It allows whitelisting manual connections. Fixes #9923
Since there are some PRs/issues around this topic, I'll list some motivations/comments for whitelisting outbound connections from them:
- Speed-up tx relay/mempool sync for testing purposes (my personal motivation for this) - In #26970, theStack pointed out that we whitelist peers to speed up tx relay for fast mempool synchronization, however, since it applies only for inbound connections and considering the topology `node0 <--- node1 <---- node2 <--- ... <-- nodeN`, if a tx is submitted from any node other than node0, the mempool synchronization can take quite long.
- https://github.com/bitcoin/bitcoin/pull/29058#issuecomment-1865155764 - "Before enabling -v2transport by default (which I'd image may happen after https://github.com/bitcoin/bitcoin/pull/24748) we could consider a way to force manual connections to be only-v1 or even only-v2 (disabling reconnect-with-v1). A possibility could be through a net permission flag, if https://github.com/bitcoin/bitcoin/pull/27114 makes it in."
- https://github.com/bitcoin/bitcoin/pull/17167#issuecomment-1168606032 - "This would allow us to use https://github.com/bitcoin/bitcoin/pull/25355 when making outgoing connections to all nodes, except to whitelisted ones for which we would use our persistent I2P address."
- Force-relay/mempool permissions for a node you intentionally connected to.
ACKs for top commit:
achow101:
ACK 0a533613fb
sr-gi:
re-ACK [0a53361](0a533613fb)
pinheadmz:
ACK 0a533613fb
Tree-SHA512: 97a79bb854110da04540897d2619eda409d829016aafdf1825ab5515334b0b42ef82f33cd41587af235b3af6ddcec3f2905ca038b5ab22e4c8a03d34f27aebe1
fa39151394 refactor: Remove unused error() (MarcoFalke)
fad0335517 scripted-diff: Replace error() with LogError() (MarcoFalke)
fa808fb749 refactor: Make error() return type void (MarcoFalke)
fa1d624348 scripted-diff: return error(...); ==> error(...); return false; (MarcoFalke)
fa9a5e80ab refactor: Add missing {} around error() calls (MarcoFalke)
Pull request description:
`error(...)` has many issues:
* It is often used in the context of `return error(...)`, implying that it has a "fancy" type, creating confusion with `util::Result/Error`
* `-logsourcelocations` does not work with it, because it will pretend the error happened inside of `logging.h`
* The log line contains `ERROR: `, as opposed to `[error]`, like for other errors logged with `LogError`.
Fix all issues by removing it.
ACKs for top commit:
fjahr:
re-utACK fa39151394
stickies-v:
re-ACK fa39151394, no changes since 4a903741b0
ryanofsky:
Code review ACK fa39151394. Just rebase since last review
Tree-SHA512: ec5bb502ab0d3733fdb14a8a00762638fce0417afd8dd6294ae0d485ce2b7ca5b1efeb50fc2cd7467f6c652e4ed3e99b0f283b08aeca04bbfb7ea4f2c95d283a
2cc8ca19f4 [test] Use deterministic addrman in addrman info tests (stratospher)
a897866109 [test] Restart a node with empty addrman (stratospher)
71c19915c0 [test] Use deterministic addrman in addpeeraddress test (stratospher)
7b868e6b67 Revert "test: avoid non-determinism in asmap-addrman test" (stratospher)
69e091f3e1 [init] Create deterministic addrman in tests using -test=addrman (stratospher)
be25ac3092 [init] Remove -addrmantest command line arg (stratospher)
802e6e128b [init] Add new command line arg for use only in functional tests (stratospher)
Pull request description:
An address is placed in a `[bucket,position]` in the addrman table (new table or tried table) using the `addpeeraddress` RPC. This `[bucket,position]` is calculated using `nKey`(and other metrics) for the addrman which is chosen randomly during every run.
Supposing there are 2 addresses to be placed in an addrman table. During every test run, a different `[bucket,position]` would be calculated for each address.These calculated `[bucket,position]` could even be the same for the 2 addresses in some test runs and result in collisions in the addrman. We wouldn't be able to predict when the collisions are going to happen because we can't predict the `nKey` value which is chosen at random. This can cause flaky tests.
Because of these non deterministic collisions, we are limited in what we can do to test addrman functionality. Currently in our tests don't add a second address to prevent these collisions from happening - we only keep 1 address in the new table and 1 address in the tried table. See https://github.com/bitcoin/bitcoin/pull/26988#discussion_r1091145647, https://github.com/bitcoin/bitcoin/pull/23084, [#22831(comment)](https://github.com/bitcoin/bitcoin/pull/22831/files#r708302639).
This PR lets us create a deterministic addrman with fixed `nKey` so that we can know the `[bucket,position]` collisions beforehand, safely add more addresses in an addrman table and write more extensive tests.
ACKs for top commit:
amitiuttarwar:
ACK 2cc8ca19f4
achow101:
ACK 2cc8ca19f4
0xB10C:
ACK 2cc8ca19f4
mzumsande:
Code Review ACK 2cc8ca19f4
Tree-SHA512: 8acd9bdfe7de1eb44d22373bf13533d8ecf602df966fdd5b8b78afcd8cc35a286c95d2712f67a89473a0d68dded7d38f5599f6e4bf95a6589475444545bfb189
This fixes the log output when -logsourcelocations is used.
Also, instead of 'ERROR:', the log will now say '[error]', like other
errors logged with LogError.
-BEGIN VERIFY SCRIPT-
sed -i --regexp-extended 's! error\("([^"]+)"! LogError("\1\\n"!g' $( git grep -l ' error(' ./src/ )
-END VERIFY SCRIPT-
Turn the `std::vector` to `std::array` because it is cheaper and
allows us to have the number of the messages as a compile time
constant: `ALL_NET_MESSAGE_TYPES.size()` which can be used in
future code to build other `std::array`s with that size.
Move parameter argument after stream argument so will be possible to accept
multiple variadic parameter arguments in the following commit.
Also reverse template parameter order for consistency.
27f260aa6e net: remove now unused global 'g_initial_block_download_completed' (furszy)
aff7d92b15 test: add coverage for peerman adaptive connections service flags (furszy)
6ed53602ac net: peer manager, dynamically adjust desirable services flag (furszy)
9f36e591c5 net: move state dependent peer services flags (furszy)
f9ac96b8d6 net: decouple state independent service flags from desirable ones (furszy)
97df4e3887 net: store best block tip time inside PeerManager (furszy)
Pull request description:
Derived from #28120 discussion.
By relocating the peer desirable services flags into the peer manager, we
allow the connections acceptance process to handle post-IBD potential
stalling scenarios.
The peer manager will be able to dynamically adjust the services flags
based on the node's proximity to the tip (back and forth). Allowing the node
to recover from the following post-IBD scenario:
Suppose the node has successfully synced the chain, but later experienced
dropped connections and remained inactive for a duration longer than the limited
peers threshold (the timeframe within which limited peers can provide blocks). In
such cases, upon reconnecting to the network, the node might only establish
connections with limited peers, filling up all available outbound slots. Resulting
in an inability to synchronize the chain (because limited peers will not provide
blocks older than the `NODE_NETWORK_LIMITED_MIN_BLOCKS` threshold).
ACKs for top commit:
achow101:
ACK 27f260aa6e
vasild:
ACK 27f260aa6e
naumenkogs:
ACK 27f260aa6e
mzumsande:
Light Code Review ACK 27f260aa6e
andrewtoth:
ACK 27f260aa6e
Tree-SHA512: 07befb9bcd0b60a4e7c45e4429c02e7b6c66244f0910f4b2ad97c9b98258b6f46c914660a717b5ed4ef4814d0dbfae6e18e6559fe9bec7d0fbc2034109200953
bc9283c441 [test] Add functional test to test early key response behaviour in BIP 324 (stratospher)
ffe6a56d75 [test] Check whether v2 TestNode performs downgrading (stratospher)
ba737358a3 [test] Add functional tests to test v2 P2P behaviour (stratospher)
4115cf9956 [test] Ignore BIP324 decoy messages (stratospher)
8c054aa04d [test] Allow inbound and outbound connections supporting v2 P2P protocol (stratospher)
382894c3ac [test] Reconnect using v1 P2P when v2 P2P terminates due to magic byte mismatch (stratospher)
a94e350ac0 [test] Build v2 P2P messages (stratospher)
bb7bffed79 [test] Use lock for sending P2P messages in test framework (stratospher)
5b91fb14ab [test] Read v2 P2P messages (stratospher)
05bddb20f5 [test] Perform initial v2 handshake (stratospher)
a049d1bd08 [test] Introduce EncryptedP2PState object in P2PConnection (stratospher)
b89fa59e71 [test] Construct class to handle v2 P2P protocol functions (stratospher)
8d6c848a48 [test] Move MAGIC_BYTES to messages.py (stratospher)
595ad4b168 [test/crypto] Add ECDH (stratospher)
4487b80517 [rpc/net] Allow v2 p2p support in addconnection (stratospher)
Pull request description:
This PR introduces support for v2 P2P encryption(BIP 324) in the existing functional test framework and adds functional tests for the same.
### commits overview
1. introduces a new class `EncryptedP2PState` to store the keys, functions for performing the initial v2 handshake and encryption/decryption.
3. this class is used by `P2PConnection` in inbound/outbound connections to perform the initial v2 handshake before the v1 version handshake. Only after the initial v2 handshake is performed do application layer P2P messages(version, verack etc..) get exchanged. (in a v2 connection)
- `v2_state` is the object of class `EncryptedP2PState` in `P2PConnection` used to store its keys, session-id etc.
- a node [advertising](https://github.com/stratospher/blogosphere/blob/main/integration_test_bip324.md#advertising-to-support-v2-p2p) support for v2 P2P is different from a node actually [supporting v2 P2P](https://github.com/stratospher/blogosphere/blob/main/integration_test_bip324.md#supporting-v2-p2p) (differ when false advertisement of services occur)
- introduce a boolean variable `supports_v2_p2p` in `P2PConnection` to denote if it supports v2 P2P.
- introduce a boolean variable `advertises_v2_p2p` to denote whether `P2PConnection` which mimics peer behaviour advertises V2 P2P support. Default option is `False`.
- In the test framework, you can create Inbound and Outbound connections to `TestNode`
1. During **Inbound Connections**, `P2PConnection` is the initiator [`TestNode` <--------- `P2PConnection`]
- Case 1:
- if the `TestNode` advertises/signals v2 P2P support (means `self.nodes[i]` set up with `"-v2transport=1"`), different behaviour will be exhibited based on whether:
1. `P2PConnection` supports v2 P2P
2. `P2PConnection` does not support v2 P2P
- In a real world scenario, the initiator node would intrinsically know if they support v2 P2P based on whatever code they choose to run. However, in the test scenario where we mimic peer behaviour, we have no way of knowing if `P2PConnection` should support v2 P2P or not. So `supports_v2_p2p` boolean variable is used as an option to enable support for v2 P2P in `P2PConnection`.
- Since the `TestNode` advertises v2 P2P support (using "-v2transport=1"), our initiator `P2PConnection` would send:
1. (if the `P2PConnection` supports v2 P2P) ellswift + garbage bytes to initiate the connection
2. (if the `P2PConnection` does not support v2 P2P) version message to initiate the connection
- Case 2:
- if the `TestNode` doesn't signal v2 P2P support; `P2PConnection` being the initiator would send version message to initiate a connection.
2. During **Outbound Connections** [TestNode --------> P2PConnection]
- initiator `TestNode` would send:
- (if the `P2PConnection` advertises v2 P2P) ellswift + garbage bytes to initiate the connection
- (if the `P2PConnection` advertises v2 P2P) version message to initiate the connection
- Suppose `P2PConnection` advertises v2 P2P support when it actually doesn't support v2 P2P (false advertisement scenario)
- `TestNode` sends ellswift + garbage bytes
- `P2PConnection` receives but can't process it and disconnects.
- `TestNode` then tries using v1 P2P and sends version message
- `P2PConnection` receives/processes this successfully and they communicate on v1 P2P
4. the encrypted P2P messages follow a different format - 3 byte length + 1-13 byte message_type + payload + 16 byte MAC
5. includes support for testing decoy messages and v2 connection downgrade(using false advertisement - when a v2 node makes an outbound connection to a node which doesn't support v2 but is advertised as v2 by some malicious
intermediary)
### run the tests
* functional test - `test/functional/p2p_v2_encrypted.py` `test/functional/p2p_v2_earlykeyresponse.py`
I'm also super grateful to @ dhruv for his really valuable feedback on this branch.
Also written a more elaborate explanation here - https://github.com/stratospher/blogosphere/blob/main/integration_test_bip324.md
ACKs for top commit:
naumenkogs:
ACK bc9283c441
mzumsande:
Code Review ACK bc9283c441
theStack:
Code-review ACK bc9283c441
glozow:
ACK bc9283c441
Tree-SHA512: 9b54ed27e925e1775e0e0d35e959cdbf2a9a1aab7bcf5d027e66f8b59780bdd0458a7a4311ddc7dd67657a4a2a2cd5034ead75524420d58a83f642a8304c9811
This test-only RPC is required when a TestNode initiates
an outbound v2 p2p connection. Add a new arg `v2transport`
so that the node can attempt v2 connections.
No behavior change. Just an intermediate refactoring.
By relocating the peer desirable services flags into the peer
manager, we allow the connections acceptance process to handle
post-IBD potential stalling scenarios.
In the follow-up commit(s), the desirable service flags will be
dynamically adjusted to detect post-IBD stalling scenarios (such
as a +48-hour inactive node that must prefer full node connections
instead of limited peer connections because they cannot provide
historical blocks). Additionally, this encapsulation enable us
to customize the connections decision-making process based on
new user's configurations in the future.
fb5bfed26a cli: add transport protcol column to -netinfo (Martin Zumsande)
9eed22e870 net: attempt v2 transport for addrfetch connections if we support it (Martin Zumsande)
770c0311ef net: attempt v2 transport for manual connections if we support it (Martin Zumsande)
Pull request description:
Some preparations before enabling `-v2transport` as the default:
* Use v2 for `-connect`, `-addnode` config arg and `-seednode` if `-v2transport` is enabled.
Our peer may or may not support v2, but I don't think an extra option is necessary for any of these (we have that for the `addnode` rpc), because we have the reconnection mechanism that will try again with `v1` if our peer doesn't support `v2`.
* Add a column for the transport protocol to `-netinfo`. I added it next to the `net` column because I thought it looked nice there, but if people prefer it somewhere else I'm happy to move it.
ACKs for top commit:
sipa:
utACK fb5bfed26a
achow101:
ACK fb5bfed26a
stratospher:
tested ACK fb5bfed. addrfetch + manual connections aren't frequent and it would be useful to have this for transition to v2 one day.
theStack:
ACK fb5bfed26a
kristapsk:
ACK fb5bfed26a
Tree-SHA512: c4575ad11b99613870b342acae369fa08f877ac79e6e04eb62e94ad7a92d528e289183c0963c78aa779ba11cb91e2a6fad7c8b0d813126c46c3e5b54bd962c26
-addrmantest is only used in `p2p_node_network_limited.py` test to
test if the node self-advertises a hard-coded local address
(which wouldn't be advertised in the tests because it's unroutable
without the test-only code path) to check pruning-related services
are correct in that addr.
Remove -addrmantest because the self advertisement happens because
of hard coded test path logic, and expected services are nominal
due to how easily the test-only code could diverge from mainnet
logic. It's also being used only in 1 test.
This affects manual connections made either with -connect, or with
-addnode provided as a bitcoind config arg (the addnode RPC has an
extra option for v2).
We don't necessarily know if our peer supports v2, but will reconnect
with v1 if they don't. In order to do that, improve the reconnection
behavior such that we will reconnect after a sleep of 500ms
(which usually should be enough for our peer to send us their
version message).
Making the `GenerateRandomKey` helper available to other modules via
key.{h.cpp} allows us to create random private keys directly at
instantiation of CKey, in contrast to the two-step process of creating
the instance and then having to call `MakeNewKey(...)`.
3ea54e5db7 net: Add continuous ASMap health check logging (Fabian Jahr)
28d7e55dff test: Add tests for unfiltered GetAddr usage (Fabian Jahr)
b8843d37ae fuzz: Let fuzzers use filter options in GetAddr/GetAddresses (Fabian Jahr)
e16f420547 net: Optionally include terrible addresses in GetAddr results (Fabian Jahr)
Pull request description:
There are certain statistics we can collect by running all our known clearnet addresses against the ASMap file. This could show issues with a maliciously manipulated file or with an old file that has decayed with time.
This is just a proof of concept for now. My idea currently is to run the analysis once per day and print the results to logs if an ASMap file is used.
ACKs for top commit:
achow101:
ACK 3ea54e5db7
mzumsande:
ACK 3ea54e5db7
brunoerg:
crACK 3ea54e5db7
Tree-SHA512: 777acbfac43cc43ce4a0a3612434e4ddbc65f59ae8ffc9e24f21de09011bccb297f0599cbaa82bcf40ef68e5af582c4e98556379db7ceff7d9f97574a1cf8e09
fa79a881ce refactor: P2P transport without serialize version and type (MarcoFalke)
fa9b5f4fe3 refactor: NetMsg::Make() without nVersion (MarcoFalke)
66669da4a5 Remove unused Make() overload in netmessagemaker.h (MarcoFalke)
fa0ed07941 refactor: VectorWriter without nVersion (MarcoFalke)
Pull request description:
Now that the serialize framework ignores the serialize version and serialize type, everything related to it can be removed from the code.
This is the first step, removing dead code from the P2P stack. A different pull will remove it from the wallet and other parts.
ACKs for top commit:
ajtowns:
reACK fa79a881ce
Tree-SHA512: 785b413580d980f51f0d4f70ea5e0a99ce14cd12cb065393de2f5254891be94a14f4266110c8b87bd2dbc37467676655bce13bdb295ab139749fcd8b61bd5110
to allocate our limited outbound slots correctly, and to ensure addnode
connections benefit from their intended protections.
Our addnode logic usually connects the addnode peers before the automatic
outbound logic does, but not always, as a connection race can occur. If an
addnode peer disconnects us and if it was the only one from its network, there
can be a race between reconnecting to it with the addnode thread, and it being
picked as automatic network-specific outbound peer. Or our internet connection
or router, or the addnode peer, could be temporarily offline, and then return
online during the automatic outbound thread. Or we could add a new manual peer
using the addnode RPC at that time.
The race can be more apparent when our node doesn't know many peers, or with
networks like cjdns that currently have few bitcoin peers.
When an addnode peer is connected as an automatic outbound peer and is the only
connection we have to a network, it can be protected by our new outbound
eviction logic and persist in the "wrong role".
Examples on mainnet using logging added in the same pull request:
2023-08-12T14:51:05.681743Z [opencon] [net.cpp:1949] [ThreadOpenConnections]
[net:debug] Not making automatic network-specific outbound-full-relay connection
to i2p peer selected for manual (addnode) connection: [geh...odq.b32.i2p]:0
2023-08-13T03:59:28.050853Z [opencon] [net.cpp:1949] [ThreadOpenConnections]
[net:debug] Not making automatic block-relay-only connection to onion peer
selected for manual (addnode) connection: kpg...aid.onion:8333
2023-08-13T16:21:26.979052Z [opencon] [net.cpp:1949] [ThreadOpenConnections]
[net:debug] Not making automatic network-specific outbound-full-relay connection
to cjdns peer selected for manual (addnode) connection: [fcc...8ce]:8333
2023-08-14T20:43:53.401271Z [opencon] [net.cpp:1949] [ThreadOpenConnections]
[net:debug] Not making automatic network-specific outbound-full-relay connection
to cjdns peer selected for manual (addnode) connection: [fc7...59e]:8333
2023-08-15T00:10:01.894147Z [opencon] [net.cpp:1949] [ThreadOpenConnections]
[net:debug] Not making automatic feeler connection to i2p peer selected for
manual (addnode) connection: geh...odq.b32.i2p:8333
Finally, there does not seem to be a reason to make block-relay or short-lived
feeler connections to addnode peers, as the addnode logic will ensure we connect
to them if they are up, within the addnode connection limit.
Fix these issues by checking if the address is an addnode peer in our automatic
outbound connection logic.
