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restricted to Tor
2feec3ce3130961f98ceb030951d0e46d3b9096c net: don't bind on 0.0.0.0 if binds are restricted to Tor (Vasil Dimov)
Pull request description:
The semantic of `-bind` is to restrict the binding only to some address.
If not specified, then the user does not care and we bind to `0.0.0.0`.
If specified then we should honor the restriction and bind only to the
specified address.
Before this change, if no `-bind` is given then we would bind to
`0.0.0.0:8333` and to `127.0.0.1:8334` (incoming Tor) which is ok -
the user does not care to restrict the binding.
However, if only `-bind=addr:port=onion` is given (without ordinary
`-bind=`) then we would bind to `addr:port` _and_ to `0.0.0.0:8333` in
addition.
Change the above to not do the additional bind: if only
`-bind=addr:port=onion` is given (without ordinary `-bind=`) then bind
to `addr:port` (only) and consider incoming connections to that as Tor
and do not advertise it. I.e. a Tor-only node.
ACKs for top commit:
laanwj:
Code review ACK 2feec3ce3130961f98ceb030951d0e46d3b9096c
jonatack:
utACK 2feec3ce3130961f98ceb030951d0e46d3b9096c per `git diff a004833 2feec3c`
hebasto:
ACK 2feec3ce3130961f98ceb030951d0e46d3b9096c, tested on Linux Mint 20.1 (x86_64):
Tree-SHA512: a04483af601706da928958b92dc560f9cfcc78ab0bb9d74414636eed1c6f29ed538ce1fb5a17d41ed82c9c9a45ca94899d0966e7ef93da809c9bcdcdb1d1f040
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The semantic of `-bind` is to restrict the binding only to some address.
If not specified, then the user does not care and we bind to `0.0.0.0`.
If specified then we should honor the restriction and bind only to the
specified address.
Before this change, if no `-bind` is given then we would bind to
`0.0.0.0:8333` and to `127.0.0.1:8334` (incoming Tor) which is ok -
the user does not care to restrict the binding.
However, if only `-bind=addr:port=onion` is given (without ordinary
`-bind=`) then we would bind to `addr:port` _and_ to `0.0.0.0:8333` in
addition.
Change the above to not do the additional bind: if only
`-bind=addr:port=onion` is given (without ordinary `-bind=`) then bind
to `addr:port` (only) and consider incoming connections to that as Tor
and do not advertise it. I.e. a Tor-only node.
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This commit extends our inbound eviction protection to I2P peers to
favorise the diversity of peer connections, as peers connected
through the I2P network are otherwise disadvantaged by our eviction
criteria for their higher latency (higher min ping times) relative
to IPv4 and IPv6 peers, as well as relative to Tor onion peers.
The `networks` array is order-dependent in the case of a tie in
candidate counts between networks (earlier array members receive
priority in the case of a tie).
Therefore, we place I2P candidates before localhost and onion ones
in terms of opportunity to recover unused remaining protected slots
from the previous iteration, guesstimating that most nodes allowing
both onion and I2P inbounds will have more onion peers, followed by
localhost, then I2P, as I2P support is only being added in the
upcoming v22.0 release.
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net_processing
0829516d1f3868c1c2ba507feee718325d81e329 [refactor] Remove unused ForEachNodeThen() template (John Newbery)
09cc66c00e1d5fabe11ffcc32cad060e6b483b20 scripted-diff: rename address relay fields (John Newbery)
76568a3351418c878d30ba0373cf76988f93f90e [net processing] Move addr relay data and logic into net processing (John Newbery)
caba7ae8a505a4b4680a9d7618f65c4e8579a1e2 [net processing] Make RelayAddress() a member function of PeerManagerImpl (John Newbery)
86acc9646968213aaa4408635915b1bfd75a10c9 [net processing] Take NodeId instead of CNode* as originator for RelayAddress() (John Newbery)
Pull request description:
This continues the work of moving application layer data into net_processing, by moving all addr data into the new Peer object added in #19607.
For motivation, see #19398.
ACKs for top commit:
laanwj:
Code review ACK 0829516d1f3868c1c2ba507feee718325d81e329
mzumsande:
ACK 0829516d1f3868c1c2ba507feee718325d81e329, reviewed the code and ran tests.
sipa:
utACK 0829516d1f3868c1c2ba507feee718325d81e329
hebasto:
re-ACK 0829516d1f3868c1c2ba507feee718325d81e329
Tree-SHA512: efe0410fac288637f203eb37d1999910791e345872d37e1bd5cde50e25bb3cb1c369ab86b3a166ffd5e06ee72e4508aa2c46d658be6a54e20b4f220d2f57d0a6
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- drop redundant PF_ permission flags prefixes
- drop ALL_CAPS naming per https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#Renum-caps
- rename IsImplicit to Implicit
-BEGIN VERIFY SCRIPT-
s() { git grep -l "$1" src | xargs sed -i "s/$1/$2/g"; }
s 'PF_NONE' 'None'
s 'PF_BLOOMFILTER' 'BloomFilter'
s 'PF_RELAY' 'Relay'
s 'PF_FORCERELAY' 'ForceRelay'
s 'PF_DOWNLOAD' 'Download'
s 'PF_NOBAN' 'NoBan'
s 'PF_MEMPOOL' 'Mempool'
s 'PF_ADDR' 'Addr'
s 'PF_ISIMPLICIT' 'Implicit'
s 'PF_ALL' 'All'
-END VERIFY SCRIPT-
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-BEGIN VERIFY SCRIPT-
s() { git grep -l "$1" -- 'src' ':!src/net_permissions.h' | xargs sed -i -E "s/([^:])$1/\1NetPermissionFlags::$1/"; }
s 'PF_NONE'
s 'PF_BLOOMFILTER'
s 'PF_RELAY'
s 'PF_FORCERELAY'
s 'PF_DOWNLOAD'
s 'PF_NOBAN'
s 'PF_MEMPOOL'
s 'PF_ADDR'
s 'PF_ISIMPLICIT'
s 'PF_ALL'
-END VERIFY SCRIPT-
Co-authored-by: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
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- rename to ShouldRunInactivityChecks (https://github.com/bitcoin/bitcoin/pull/20721#discussion_r576394790)
- take optional time now (https://github.com/bitcoin/bitcoin/pull/20721#discussion_r575895661)
- call from within InactivityChecks (https://github.com/bitcoin/bitcoin/pull/20721#discussion_r575894665)
- update comment (https://github.com/bitcoin/bitcoin/pull/20721#discussion_r575894343)
- change ordering of inequality (https://github.com/bitcoin/bitcoin/pull/20721#discussion_r574925129)
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MaybeSendAddr()
935d4889228e7e361c8b0020761fa0e08a55fb48 [net processing] Refactor MaybeSendAddr() (John Newbery)
01a79ff924b11f91796d4aa63c571897b047ac7d [net processing] Fix overindentation in MaybeSendAddr() (John Newbery)
38c0be5da3af17208b165e73cee7612d3670b038 [net processing] Refactor MaybeSendAddr() - early exits (John Newbery)
c87423c58b5165de835a49bebd566538a70c07ab [net processing] Change MaybeSendAddr() to take a reference (John Newbery)
ad719297f2ecdd2394eff668b3be7070bc9cb3e2 [net processing] Extract `addr` send functionality into MaybeSendAddr() (John Newbery)
4ad4abcf07efefafd439b28679dff8d6bbf62943 [net] Change addr send times fields to be guarded by new mutex (John Newbery)
c02fa47baa517e17b5c43bde3902b1e410c1b93f [net processing] Only call GetTime() once in SendMessages() (John Newbery)
Pull request description:
This continues the work of moving application layer data into net_processing. It refactors `addr` send functionality into its own function `MaybeSendAddr()` and flattens/simplifies the code. Isolating and simplifying the addr handling code makes subsequent changes (which will move addr data and logic into net processing) easier to review.
This is a pure refactor. There are no functional changes.
For motivation of the project, see #19398.
ACKs for top commit:
sipa:
utACK 935d4889228e7e361c8b0020761fa0e08a55fb48
hebasto:
ACK 935d4889228e7e361c8b0020761fa0e08a55fb48, I have reviewed the code and it looks OK, I agree it can be merged.
MarcoFalke:
review ACK 935d4889228e7e361c8b0020761fa0e08a55fb48 🐑
Tree-SHA512: 4e9dc84603147e74f479a211b42bcf315bdf5d14c21c08cf0b17d6c252775b90b012f0e0d834f1a607ed63c7ed5c63d5cf49b134344e7b64a1695bfcff111c92
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eviction protection test coverage
0cca08a8ee33b4e05ff586ae4fd914f5ea860cea Add unit test coverage for our onion peer eviction protection (Jon Atack)
caa21f586f951d626a67f391050c3644f1057f57 Protect onion+localhost peers in ProtectEvictionCandidatesByRatio() (Jon Atack)
8f1a53eb027727a4c0eaac6d82f0a8279549f638 Use EraseLastKElements() throughout SelectNodeToEvict() (Jon Atack)
8b1e156143740a5548dc7b601d40fb141e6aae1c Add m_inbound_onion to AttemptToEvictConnection() (Jon Atack)
72e30e8e03f880eba4bd1c3fc18b5558d8cef680 Add unit tests for ProtectEvictionCandidatesByRatio() (Jon Atack)
ca63b53ecdf377ce777fd959d400748912266748 Use std::unordered_set instead of std::vector in IsEvicted() (Jon Atack)
41f84d5eccd4c2620bf6fee616f2f8f717dbd6f6 Move peer eviction tests to a separate test file (Jon Atack)
f126cbd6de6e1a8fee0e900ecfbc14a88e362541 Extract ProtectEvictionCandidatesByRatio from SelectNodeToEvict (Jon Atack)
Pull request description:
Now that #19991 and #20210 have been merged, we can determine inbound onion peers using `CNode::m_inbound_onion` and add it to the localhost peers protection in `AttemptToEvictConnection`, which was added in #19670 to address issue #19500.
Update 28 February 2021: I've updated this to follow gmaxwell's suggestion in https://github.com/bitcoin/bitcoin/pull/20197#issuecomment-713865992.
This branch now protects up to 1/4 onion peers (connected via our tor control service), if any, sorted by longest uptime. If any (or all) onion slots remain after that operation, they are then allocated to protect localhost peers, or a minimum of 2 localhost peers in the case that no onion slots remain and 2 or more onion peers were protected, sorted as before by longest uptime.
This patch also adds test coverage for the longest uptime, localhost, and onion peer eviction protection logic to build on the welcome initial unit testing of #20477.
Suggest reviewing the commits that move code with `colorMoved = dimmed-zebra` and `colorMovedWs = allow-indentation-change`.
Closes #11537.
ACKs for top commit:
laanwj:
Code review ACK 0cca08a8ee33b4e05ff586ae4fd914f5ea860cea
vasild:
ACK 0cca08a8ee33b4e05ff586ae4fd914f5ea860cea
Tree-SHA512: 2f5a63f942acaae7882920fc61f0185dcd51da85e5b736df9d1fc72343726dd17da740e02f30fa5dc5eb3b2d8345707aed96031bec143d48a2497a610aa19abd
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PeerManager can just call directly into CAddrMan::Connected() now.
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It just forwards calls to CAddrMan::Add.
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It just forwards calls to CAddrMan::Good.
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It just forwards calls to CAddrMan::SetServices.
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node.context owns the CAddrMan. CConnman holds a reference to
the CAddrMan.
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52dd40a9febec1f4e70d777821b6764830bdec61 test: add missing netaddress include headers (Jon Atack)
6f09c0f6b57ac01a473c587a3e51e9d477866bb0 util: add missing braces and apply clang format to SplitHostPort() (Jon Atack)
2875a764f7d8b1503c7bdb2f262964f7a0cb5fc3 util: add ParseUInt16(), use it in SplitHostPort() (Jon Atack)
6423c8175fad3163c10ffdb49e0df48e4e4931f1 p2p, refactor: pass and use uint16_t CService::port as uint16_t (Jon Atack)
Pull request description:
As noticed during review today in https://github.com/bitcoin/bitcoin/pull/20685#discussion_r584873708 of the upcoming I2P network support, `CService::port` is `uint16_t` but is passed around the codebase and into the ctors as `int`, which causes uneeded conversions and casts. We can avoid these (including in the incoming I2P code without further changes to it) by using ports with the correct type. The remaining conversions are pushed out to the user input boundaries where they can be range-checked and raise with user feedback in the next patch.
ACKs for top commit:
practicalswift:
cr ACK 52dd40a9febec1f4e70d777821b6764830bdec61: patch looks correct
MarcoFalke:
cr ACK 52dd40a9febec1f4e70d777821b6764830bdec61
vasild:
ACK 52dd40a9febec1f4e70d777821b6764830bdec61
Tree-SHA512: 203c1cab3189a206c55ecada77b9548b810281cdc533252b8e3330ae0606b467731c75f730ce9deb07cbaab66facf97e1ffd2051084ff9077cba6750366b0432
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Now that we have a reliable way to detect inbound onion peers, this commit
updates our existing eviction protection of 1/4 localhost peers to instead
protect up to 1/4 onion peers (connected via our tor control service), sorted by
longest uptime. Any remaining slots of the 1/4 are then allocated to protect
localhost peers, or 2 localhost peers if no slots remain and 2 or more onion
peers are protected, sorted by longest uptime.
The goal is to avoid penalizing onion peers, due to their higher min ping times
relative to IPv4 and IPv6 peers, and improve our diversity of peer connections.
Thank you to Gregory Maxwell, Suhas Daftuar, Vasil Dimov and Pieter Wuille
for valuable review feedback that shaped the direction.
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and an `m_is_onion` struct member to NodeEvictionCandidate and tests.
We'll use these in the peer eviction logic to protect inbound onion peers
in addition to the existing protection of localhost peers.
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to allow deterministic unit testing of the ratio-based peer eviction protection
logic, which protects peers having longer connection times and those connected
via higher-latency networks.
Add documentation.
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-BEGIN VERIFY SCRIPT-
git rm src/optional.h
sed -i -e 's/Optional</std::optional</g' $(git grep -l 'Optional<' src)
sed -i -e 's/{nullopt}/{std::nullopt}/g' $(git grep -l 'nullopt' src)
sed -i -e 's/ nullopt;/ std::nullopt;/g' $(git grep -l 'nullopt' src)
sed -i -e 's/ nullopt)/ std::nullopt)/g' $(git grep -l 'nullopt' src)
sed -i -e 's/(nullopt)/(std::nullopt)/g' $(git grep -l 'nullopt' src)
sed -i -e 's/ nullopt,/ std::nullopt,/g' $(git grep -l 'nullopt' src)
sed -i -e 's/? nullopt :/? std::nullopt :/g' $(git grep -l 'nullopt' src)
sed -i -e 's/: nullopt}/: std::nullopt}/g' $(git grep -l 'nullopt' src)
sed -i -e '/optional.h \\/d' src/Makefile.am
sed -i -e '/#include <optional.h>/d' src/test/fuzz/autofile.cpp src/test/fuzz/buffered_file.cpp src/test/fuzz/node_eviction.cpp
sed -i -e 's/#include <optional.h>/#include <optional>/g' $(git grep -l '#include <optional.h>' src)
-END VERIFY SCRIPT-
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Introduce two new options to reach the I2P network:
* `-i2psam=<ip:port>` point to the I2P SAM proxy. If this is set then
the I2P network is considered reachable and we can make outgoing
connections to I2P peers via that proxy. We listen for and accept
incoming connections from I2P peers if the below is set in addition to
`-i2psam=<ip:port>`
* `-i2pacceptincoming` if this is set together with `-i2psam=<ip:port>`
then we accept incoming I2P connections via the I2P SAM proxy.
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Isolate the second half of `CConnman::AcceptConnection()` into a new
separate method, which could be reused if we accept incoming connections
by other means than `accept()` (first half of
`CConnman::AcceptConnection()`).
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Gossiping addresses to peers is the responsibility of net processing.
Change AdvertiseLocal() in net to just return an (optional) address
for net processing to advertise. Update function name to reflect
new responsibility.
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-BEGIN VERIFY SCRIPT-
sed -i 's/fPingQueued/m_ping_queued/g' src/net_processing.cpp
sed -i 's/nMinPingUsecTime/m_min_ping_time/g' src/net.* src/net_processing.cpp src/test/net_tests.cpp
sed -i 's/nPingNonceSent/m_ping_nonce_sent/g' src/net_processing.cpp
sed -i 's/nPingUsecTime/m_last_ping_time/g' src/net.*
-END VERIFY SCRIPT-
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Moves the logic to prevent running inactivity checks until
the peer has been connected for -peertimeout time into its
own function. This will be reused by net_processing later.
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and to allow the compiler to warn if uninitialized in the ctor
or omitted in the caller.
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Add -fixedseeds arg.
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and add fSuccessfullyConnected doxygen documentation
to clarify that it is set to true on VERACK
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bff7c66e67aa2f18ef70139338643656a54444fe Add documentation to contrib folder (Troy Giorshev)
381f77be858d7417209b6de0b7cd23cb7eb99261 Add Message Capture Test (Troy Giorshev)
e4f378a505922c0f544b4cfbfdb169e884e02be9 Add capture parser (Troy Giorshev)
4d1a582549bc982d55e24585b0ba06f92f21e9da Call CaptureMessage at appropriate locations (Troy Giorshev)
f2a77ff97bec09dd5fcc043d8659d8ec5dfb87c2 Add CaptureMessage (Troy Giorshev)
dbf779d5deb04f55c6e8493ce4e12ed4628638f3 Clean PushMessage and ProcessMessages (Troy Giorshev)
Pull request description:
This PR introduces per-peer message capture into Bitcoin Core. 📓
## Purpose
The purpose and scope of this feature is intentionally limited. It answers a question anyone new to Bitcoin's P2P protocol has had: "Can I see what messages my node is sending and receiving?".
## Functionality
When a new debug-only command line argument `capturemessages` is set, any message that the node receives or sends is captured. The capture occurs in the MessageHandler thread. When receiving a message, it is captured as soon as the MessageHandler thread takes the message off of the vProcessMsg queue. When sending, the message is captured just before the message is pushed onto the vSendMsg queue.
The message capture is as minimal as possible to reduce the performance impact on the node. Messages are captured to a new `message_capture` folder in the datadir. Each node has their own subfolder named with their IP address and port. Inside, received and sent messages are captured into two binary files, msgs_recv.dat and msgs_sent.dat, like so:
```
message_capture/203.0.113.7:56072/msgs_recv.dat
message_capture/203.0.113.7:56072/msgs_sent.dat
```
Because the messages are raw binary dumps, included in this PR is a Python parsing tool to convert the binary files into human-readable JSON. This script has been placed on its own and out of the way in the new `contrib/message-capture` folder. Its usage is simple and easily discovered by the autogenerated `-h` option.
## Future Maintenance
I sympathize greatly with anyone who says "the best code is no code".
The future maintenance of this feature will be minimal. The logic to deserialize the payload of the p2p messages exists in our testing framework. As long as our testing framework works, so will this tool.
Additionally, I hope that the simplicity of this tool will mean that it gets used frequently, so that problems will be discovered and solved when they are small.
## FAQ
"Why not just use Wireshark"
Yes, Wireshark has the ability to filter and decode Bitcoin messages. However, the purpose of the message capture added in this PR is to assist with debugging, primarily for new developers looking to improve their knowledge of the Bitcoin Protocol. This drives the design in a different direction than Wireshark, in two different ways. First, this tool must be convenient and simple to use. Using an external tool, like Wireshark, requires setup and interpretation of the results. To a new user who doesn't necessarily know what to expect, this is unnecessary difficulty. This tool, on the other hand, "just works". Turn on the command line flag, run your node, run the script, read the JSON. Second, because this tool is being used for debugging, we want it to be as close to the true behavior of the node as possible. A lot can happen in the SocketHandler thread that would be missed by Wireshark.
Additionally, if we are to use Wireshark, we are at the mercy of whoever it maintaining the protocol in Wireshark, both as to it being accurate and recent. As can be seen by the **many** previous attempts to include Bitcoin in Wireshark (google "bitcoin dissector") this is easier said than done.
Lastly, I truly believe that this tool will be used significantly more by being included in the codebase. It's just that much more discoverable.
ACKs for top commit:
MarcoFalke:
re-ACK bff7c66e67aa2f18ef70139338643656a54444fe only some minor changes: 👚
jnewbery:
utACK bff7c66e67aa2f18ef70139338643656a54444fe
theStack:
re-ACK bff7c66e67aa2f18ef70139338643656a54444fe
Tree-SHA512: e59e3160422269221f70f98720b47842775781c247c064071d546c24fa7a35a0e5534e8baa4b4591a750d7eb16de6b4ecf54cbee6d193b261f4f104e28c15f47
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79a2576af1e499102943aa4e1d98994ee8a9c6b5 doc: update ConnectionType Doxygen documentation (Jon Atack)
f3153dc08fa16aa3bbca52f67833e5c9fbe8e095 gui: improve markup handling of connection type tooltip (Jon Atack)
4f0961573318271d4d0737b99057f54c188540f7 gui: return inbound {full, block} relay type in peer details (Jon Atack)
Pull request description:
Three follow-ups to #163:
- return relay type for inbound peers
- improve markup handling in the tooltip to facilitate translations
- update ConnectionType doxygen documentation
ACKs for top commit:
hebasto:
re-ACK 79a2576af1e499102943aa4e1d98994ee8a9c6b5, only suggested changes since my [previous](https://github.com/bitcoin-core/gui/pull/180#pullrequestreview-564894781) review.
jarolrod:
ACK 79a2576af1e499102943aa4e1d98994ee8a9c6b5, tested on macOS 11.1 with Qt 5.15.2
laanwj:
Code review ACK 79a2576af1e499102943aa4e1d98994ee8a9c6b5
Tree-SHA512: 4a8d8f8bfbaefd68e8d1bf3b20d29e4a8e8cfe97b2f8d59d3a4c338a50b61de0a67d97bd8646c04bd5df5a9679c4954b9b46e7cba24bb89f4d0e44e94cf9d66c
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This commit adds the CaptureMessage function. This will later be called
when any message is sent or received. The capture directory is fixed,
in a new folder "message_capture" in the datadir. Peers will then have
their own subfolders, named with their IP address and port, replacing
colons with underscores to keep compatibility with Windows. Inside,
received and sent messages will be captured into two binary files,
msgs_recv.dat and msgs_sent.dat.
e.g.
message_capture/203.0.113.7_56072/msgs_recv.dat
message_capture/203.0.113.7_56072/msgs_sent.dat
The format has been designed as to result in a minimal performance
impact. A parsing script is added in a later commit.
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Also clean up and better comment the function. InactivityChecks() uses a
mixture of (non-mockable) system time and mockable time. Make sure
that's well documented.
Despite being marked as const in CConnman before this commit, the
function did mutate the state of the passed in CNode, which is contained
in vNodes, which is a member of CConnman. To make the function truly
const in CConnman and all its data, instead make InactivityChecks() a
pure function, return whether the peer should be disconnected, and let
the calling function (SocketHandler()) update the CNode object. Also
make the CNode& argument const.
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c97f70c861ac6959b8116a9bca3031edeb2b2aaa net_processing: move Peer definition to .cpp (Anthony Towns)
e0f2e6d2df7117a8dbf17c63c5149fc53a6fe2b2 net_processing: move PeerManagerImpl into cpp file (Anthony Towns)
a568b82febb3ecbd5ebb7c3f9da27e762b0c68f6 net_processing: split PeerManager into interface and implementation classes (Anthony Towns)
0df3d3fd6bbbd0e06116797177ba797580553250 net_processing: make more of PeerManager private (Anthony Towns)
0d246a59b606c51728d10cb70004a6eedb951bca net, net_processing: move NetEventsInterface method docs to net.h (Anthony Towns)
Pull request description:
Moves the implementation details of `PeerManager` and all of `struct Peer` into net_processing.cpp.
ACKs for top commit:
jnewbery:
ACK c97f70c861ac6959b8116a9bca3031edeb2b2aaa
Sjors:
ACK c97f70c861ac6959b8116a9bca3031edeb2b2aaa
laanwj:
Code review ACK c97f70c861ac6959b8116a9bca3031edeb2b2aaa
vasild:
ACK c97f70c861ac6959b8116a9bca3031edeb2b2aaa
Tree-SHA512: 2e081e491d981c61bd78436a6a6c2eb41d3c2d86a1a8ef9d4d6f801b82cb64a8bf707a96db3429418d1704cffb60a657d1037a0336cbc8173fb79aef9eb72001
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functional tests.
b4dd2ef8009703b81235e2d9a2a736a3a5e8152f [test] Test the add_outbound_p2p_connection functionality (Amiti Uttarwar)
602e69e4278f0ed25c65fb568ab395e4c7ca9ceb [test] P2PBlocksOnly - Test block-relay-only connections. (Amiti Uttarwar)
8bb6beacb19864b1fca766b3e153349a31dc0459 [test/refactor] P2PBlocksOnly - Extract transaction violation test into helper. (Amiti Uttarwar)
99791e7560d40ad094eaa73e0be3987581338e2d [test/refactor] P2PBlocksOnly - simplify transaction creation using blocktool helper. (Amiti Uttarwar)
3997ab915451a702eed2153a0727b0a78c0450ac [test] Add test framework support to create outbound connections. (Amiti Uttarwar)
5bc04e8837c0452923cebd1b823a85e5c4dcdfa6 [rpc/net] Introduce addconnection to test outbounds & blockrelay (Amiti Uttarwar)
Pull request description:
The existing functional test framework uses the `addnode` RPC to spin up manual connections between bitcoind nodes. This limits our ability to add integration tests for our networking code, which often executes different code paths for different connection types.
**This PR enables creating `outbound` & `block-relay-only` P2P connections in the functional tests.** This allows us to increase our p2p test coverage, since we can now verify expectations around these connection types.
This builds out the [prototype](https://github.com/bitcoin/bitcoin/issues/14210#issuecomment-527421978) proposed by ajtowns in #14210. 🙌🏽
An overview of this branch:
- introduces a new test-only RPC function `addconnection` which initiates opening an `outbound` or `block-relay-only` connection. (conceptually similar to `addnode` but for different connection types & restricted to regtest)
- adds `test_framework` support so a mininode can open an `outbound`/`block-relay-only` connection to a `P2PInterface`/`P2PConnection`.
- updates `p2p_blocksonly` tests to create a `block-relay-only` connection & verify expectations around transaction relay.
- introduces `p2p_add_connections` test that checks the behaviors of the newly introduced `add_outbound_p2p_connection` test framework function.
With these changes, there are many more behaviors that we can add integration tests for. The blocksonly updates is just one example.
Huge props to ajtowns for conceiving the approach & providing me feedback as I've built out this branch. Also thank you to jnewbery for lots of thoughtful input along the way.
ACKs for top commit:
troygiorshev:
reACK b4dd2ef8009703b81235e2d9a2a736a3a5e8152f
jnewbery:
utACK b4dd2ef8009703b81235e2d9a2a736a3a5e8152f
MarcoFalke:
Approach ACK b4dd2ef8009703b81235e2d9a2a736a3a5e8152f 🍢
Tree-SHA512: d1cba768c19c9c80e6a38b1c340cc86a90701b14772c4a0791c458f9097f6a4574b4a4acc7d13d6790c7b1f1f197e2c3d87996270f177402145f084ef8519a6b
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