6bf6e9fd9dece67878595a5f3361851c25833c49 net: change CreateNodeFromAcceptedSocket() to take Sock (Vasil Dimov)
9e3cbfca7c9efa620c0cce73503772805cc1fa82 net: use Sock in CConnman::ListenSocket (Vasil Dimov)
f8bd13f85ae5404adef23a52719d804a5c36b1e8 net: add new method Sock::Accept() that wraps accept() (Vasil Dimov)
Pull request description:
_This is a piece of https://github.com/bitcoin/bitcoin/pull/21878, chopped off to ease review._
Introduce an `accept(2)` wrapper `Sock::Accept()` and extend the usage of `Sock` in `CConnman::ListenSocket` and `CreateNodeFromAcceptedSocket()`.
ACKs for top commit:
laanwj:
Code review ACK 6bf6e9fd9dece67878595a5f3361851c25833c49
jamesob:
ACK 6bf6e9fd9dece67878595a5f3361851c25833c49 ([`jamesob/ackr/21879.2.vasild.wrap_accept_and_extend_u`](https://github.com/jamesob/bitcoin/tree/ackr/21879.2.vasild.wrap_accept_and_extend_u))
jonatack:
ACK 6bf6e9fd9dece67878595a5f3361851c25833c49 per `git range-diff ea989de 976f6e8 6bf6e9f` -- only change since my last review was `s/listen_socket.socket/listen_socket.sock->Get()/` in `src/net.cpp: CConnman::SocketHandlerListening()` -- re-read the code changes, rebase/debug build/ran units following my previous full review (https://github.com/bitcoin/bitcoin/pull/21879#pullrequestreview-761251278)
w0xlt:
tACK 6bf6e9f
Tree-SHA512: dc6d1acc4f255f1f7e8cf6dd74e97975cf3d5959e9fc2e689f74812ac3526d5ee8b6a32eca605925d10a4f7b6ff1ce5e900344311e587d19786b48c54d021b64
fad943821e35d0eb2143061e718f0193e12a4c71 scripted-diff: Rename touched member variables (MarcoFalke)
fa663a4c0d20487ed3f7a93e1c2ca9932b05f5a8 Use mockable time for peer connection time (MarcoFalke)
fad7ead146a152f46b25ce6623e05cbb1dbc8cca refactor: Use type-safe std::chrono in net (MarcoFalke)
Pull request description:
Benefits:
* Type-safe
* Mockable
* Allows to revert a temporary test workaround
ACKs for top commit:
naumenkogs:
ACK fad943821e35d0eb2143061e718f0193e12a4c71
shaavan:
ACK fad943821e35d0eb2143061e718f0193e12a4c71
Tree-SHA512: af9bdfc695ab727b100c6810a7289d29b02b0ea9fa4fee9cc1f3eeefb52c8c465ea2734bae0c1c63b3b0d6264ba2c493268bc970ef6916570eb166de77829d82
eaf6be0114a6d7763767da9496907fe8a670ff9e [net processing] Do not request transaction relay from feeler connections (John Newbery)
0220b834b175dc8c45a2c60213474a72c0ef8193 [test] Add testing for outbound feeler connections (John Newbery)
Pull request description:
Feelers are short-lived connections used to test the viability of peers. The bitcoind node will periodically open feeler connections to addresses in its addrman, wait for a `version` message from the peer, and then close the connection.
Currently, we set `fRelay` to `1` in the `version` message for feeler connections, indicating that we want the peer to relay transactions to us. However, we close the connection immediately on receipt of the `version` message, and so never process any incoming transaction announcements. This PR changes that behaviour to instead set `fRelay` to `0` indicating that we do not wish to receive transaction announcements from the peer.
This PR also extends the `addconnection` RPC to allow creating outbound feeler connections from the node to the test framework, and a test to verify that the node sets `fRelay` to `0` in the `version` message to feeler connections.
ACKs for top commit:
naumenkogs:
ACK eaf6be0114a6d7763767da9496907fe8a670ff9e
MarcoFalke:
review ACK eaf6be0114a6d7763767da9496907fe8a670ff9e 🏃
Tree-SHA512: 1c56837dbd0a396fe404a5e39f7459864d15f666664d6b35ad109628b13158e077e417e586bf48946a23bd5cbe63716cb4bf22cdf8781b74dfce6047b87b465a
fadc0c80ae4e526fb2b503f7cc02f6122aaf1de5 p2p: Make timeout mockable and type safe, speed up test (MarcoFalke)
fa6d5a238d2c94440105ddd4f1554f85659d6c5b scripted-diff: Rename m_last_send and m_last_recv (MarcoFalke)
Pull request description:
Use type-safe time for better code readability/maintainability and mockable time for better testability. This speeds up the p2p_timeout test.
This is also a bugfix for intermittent test issues like: https://cirrus-ci.com/task/4769904156999680?command=ci#L2836Fixes#20654
ACKs for top commit:
laanwj:
Code review ACK fadc0c80ae4e526fb2b503f7cc02f6122aaf1de5
naumenkogs:
ACK fadc0c80ae4e526fb2b503f7cc02f6122aaf1de5
Tree-SHA512: 28c6544c97f188c8a0fbc80411c74ab74ffd055885322c325aa3d1c404b29c3fd70a737e86083eecae58ef394db1cb56bc122d06cff63742aa89a8e868730c64
Change `CConnman::CreateNodeFromAcceptedSocket()` to take a `Sock`
argument instead of `SOCKET`.
This makes the method mockable and also a little bit shorter as some
`CloseSocket()` calls are removed (the socket will be closed
automatically by the `Sock` destructor on early return).
Change `CConnman::ListenSocket` to use a pointer to `Sock` instead of a
bare `SOCKET` and use `Sock::Accept()` instead of bare `accept()`. This
will help mocking / testing / fuzzing more code.
The RecursiveMutex m_added_nodes_mutex is used at three places:
- CConnman::GetAddedNodeInfo()
- CConnman::AddNode()
- CConnman::ThreadOpenConnections()
In each of the critical sections, only the the m_added_nodes member is
accessed (and in the last case, also m_addr_fetches), without any chance
that within one section another one is called. Hence, we can use an
ordinary Mutex instead of RecursiveMutex.
The RecursiveMutex m_addr_fetches_mutex is used at three places:
- CConnman::AddAddrFetch()
- CConnman::ProcessAddrFetch()
- CConnman::ThreadOpenConnections()
In each of the critical sections, only the the m_addr_fetches is accessed
(and in the last case, also vAddedNodes), without any chance that within
one section another one is called. Hence, we can use an ordinary Mutex
instead of RecursiveMutex.
The RecursiveMutex cs_totalBytesRecv is only used at two places: in
CConnman::RecordBytesRecv() to increment the nTotalBytesRecv member, and in
CConnman::GetTotalBytesRecv() to read it. For this simple use-case, we can
make the member std::atomic instead to achieve the same result.
f52b6b2d9f482353821da0ef4c485c402a396c8d net: split CConnman::SocketHandler() (Vasil Dimov)
c7eb19ec8302e6a5abd89c0566540c2c862e9121 style: remove unnecessary braces (Vasil Dimov)
664ac22c5379db65757fc3aab91fff8765683e7f net: keep reference to each node during socket wait (Vasil Dimov)
75e8bf55f5a014faada7712a9640dc35e8c86f15 net: dedup and RAII-fy the creation of a copy of CConnman::vNodes (Vasil Dimov)
Pull request description:
_This is a piece of https://github.com/bitcoin/bitcoin/pull/21878, chopped off to ease review._
The following pattern was duplicated in CConnman:
```cpp
lock
create a copy of vNodes, add a reference to each one
unlock
... use the copy ...
lock
release each node from the copy
unlock
```
Put that code in a RAII helper that reduces it to:
```cpp
create snapshot "snap"
... use the copy ...
// release happens when "snap" goes out of scope
ACKs for top commit:
jonatack:
ACK f52b6b2d9f482353821da0ef4c485c402a396c8d changes since last review are reordered commits, removing an unneeded local variable, and code formatting and documentation improvements
LarryRuane:
code review ACK f52b6b2d9f482353821da0ef4c485c402a396c8d
promag:
Code review ACK f52b6b2d9f482353821da0ef4c485c402a396c8d, only format changes and comment tweaks since last review.
Tree-SHA512: 5ead7b4c641ebe5b215e7baeb7bc0cdab2a588b2871d9a343a1d518535c55c0353d4e46de663f41513cdcc79262938ccea3232f6d5166570fc2230286c985f68
`CConnman::SocketHandler()` does 3 things:
1. Check sockets for readiness
2. Process ready listening sockets
3. Process ready connected sockets
Split the processing (2. and 3.) into separate methods to make the code
easier to grasp.
Also, move the processing of listening sockets after the processing of
connected sockets to make it obvious that there is no dependency and
also explicitly release the snapshot before dealing with listening
sockets - it is only necessary for the connected sockets part.
Create the snapshot of `CConnman::vNodes` to operate on earlier in
`CConnman::SocketHandler()`, before calling `CConnman::SocketEvents()`
and pass the `vNodes` copy from the snapshot to `SocketEvents()`.
This will keep the refcount of each node incremented during
`SocketEvents()` so that the `CNode` object is not destroyed before
`SocketEvents()` has finished.
Currently in `SocketEvents()` we only remember file descriptor numbers
(when not holding `CConnman::cs_vNodes`) which is safe, but we will
change this to remember pointers to `CNode::m_sock`.
The following pattern was duplicated in CConnman:
```cpp
lock
create a copy of vNodes, add a reference to each one
unlock
... use the copy ...
lock
release each node from the copy
unlock
```
Put that code in a RAII helper that reduces it to:
```cpp
create snapshot "snap"
... use the copy ...
// release happens when "snap" goes out of scope
```
f3e451bebfe2e2d8de901d8ac29c064a51d3b746 [net] Replace GetID() with id in TransportDeserializer constructor (Troy Giorshev)
8c96008ab18075abca03bff6b3675643825a21ca [net] Don't return an optional from TransportDeserializer::GetMessage() (Troy Giorshev)
Pull request description:
Also, access mapRecvBytesPerMsgCmd with `at()` not `find()`. This
throws an error if COMMAND_OTHER doesn't exist, which should never
happen. `find()` instead just accessed the last element, which could make
debugging more difficult.
Resolves review comments from PR19107:
- https://github.com/bitcoin/bitcoin/pull/19107#discussion_r478718436
- https://github.com/bitcoin/bitcoin/pull/19107#discussion_r478714497
ACKs for top commit:
theStack:
Code-review ACK f3e451bebfe2e2d8de901d8ac29c064a51d3b746
ryanofsky:
Code review ACK f3e451bebfe2e2d8de901d8ac29c064a51d3b746. Changes since last review in https://github.com/bitcoin/bitcoin/pull/20364#pullrequestreview-534369904 were simplifying by dropping the third commit, rebasing, and cleaning up some style & comments in the first commit.
Tree-SHA512: 37de4b25646116e45eba50206e82ed215b0d9942d4847a172c104da4ed76ea4cee29a6fb119f3c34106a9b384263c576cb8671d452965a468f358d4a3fa3c003
fadf1186c899f45787a91c28120b0608bdc6c246 p2p: Use mocktime for ping timeout (MarcoFalke)
Pull request description:
It is slightly confusing to use mocktime for some times, but not others.
Start fixing that by making the ping timeout use mocktime.
The only downside would be that tests that use mocktime disconnect peers after this patch. However, I don't think this is an issue, as the inactivity check is already disabled for all functional tests after commit 6d76b57ca0cdf6f9c19ce065b9a4a628930a78b5. Only one unit test needed the inactivity check disabled as part of this patch.
A nice side effect of this patch is that the `p2p_ping` functional test now runs 4 seconds faster.
ACKs for top commit:
laanwj:
Code review ACK fadf1186c899f45787a91c28120b0608bdc6c246
Tree-SHA512: e9e7b21040a89d9d574b3038f85a67e6336de6cd6e41aa286769cd03cada6e75a94ec01700e052e56d822ef85d7813cc06bf7e67b81543eff8917a16cdccf942
fa2d611bedc2a755dcf84a82699c70b57b903cf6 style: Sort (MarcoFalke)
fa1e5de2db2c7c95b96773a4ac231ab4249317e9 scripted-diff: Move bloom to src/common (MarcoFalke)
fac303c504ab19b863fddc7a0093068fee9d4ef3 refactor: Remove unused MakeUCharSpan (MarcoFalke)
Pull request description:
To avoid having all files at the top level `./src` directory, start moving them to their respective sub directory according to https://github.com/bitcoin/bitcoin/issues/15732.
`bloom` currently depends on libconsensus (`CTransaction`, `CScript`, ...) and it is currently located in the libcommon. Thus, move it to `src/common/`. (libutil in `src/util/` is for stuff that doesn't depend on libconsensus).
ACKs for top commit:
theStack:
Code-review ACK fa2d611bedc2a755dcf84a82699c70b57b903cf6
ryanofsky:
Code review ACK fa2d611bedc2a755dcf84a82699c70b57b903cf6
fanquake:
ACK fa2d611bedc2a755dcf84a82699c70b57b903cf6 - source shuffle starts now.
Tree-SHA512: d2fbc31b81741e9f0be539e1149542c9ca39958c240e12e8e757d882beccd0f0debdc10dcce146a05f03ef9f5c6247900a461a7a4799b515e8716dfb9af1fde2
021f86953e8a1dff8ecc768186368d345c865cc2 [style] Run changed files through clang formatter. (Amiti Uttarwar)
375750387e35ed751d1f5ab48860bdec93977f64 scripted-diff: Rename CAddrInfo to AddrInfo (Amiti Uttarwar)
dd8f7f250095e58bbf4cd4effb481b52143bd1ed scripted-diff: Rename CAddrMan to AddrMan (Amiti Uttarwar)
3c263d3f63c3598954ee2b65a0e721e3c22e52f8 [includes] Fix up included files (Amiti Uttarwar)
29727c2aa1233f7c5b91a17884c405e0aef10c6e [doc] Update comments (Amiti Uttarwar)
14f9e000d05f82b364d5a142cafc70b10406b660 [refactor] Update GetAddr_() function signature (Amiti Uttarwar)
40acd6fc9a8098fed85abf4fb727a5f0dff8a2ff [move-only] Move constants to test-only header (Amiti Uttarwar)
7cf41bbb38db5008f9b69037b88138076d6a6cc5 [addrman] Change CAddrInfo access (Amiti Uttarwar)
e3f1ea659c9eb1e8be4579923d6acaaab148c2ef [move-only] Move CAddrInfo to test-only header file (Amiti Uttarwar)
7cba9d56185b9325ce41d79364e448462fff0f6a [net, addrman] Remove external dependencies on CAddrInfo objects (Amiti Uttarwar)
8af5b54f973e11c847345418d8631bc301b96130 [addrman] Introduce CAddrMan::Impl to encapsulate addrman implementation. (Amiti Uttarwar)
f2e5f38f09ee40933f752680fe7d75ee8e529fae [move-only] Match ordering of CAddrMan declarations and definitions (Amiti Uttarwar)
5faa7dd6d871eac1a0ec5c4a93f2ad7577781a56 [move-only] Move CAddrMan function definitions to cpp (Amiti Uttarwar)
Pull request description:
Introduce the pimpl pattern for AddrMan to separate the implementation details from the externally used object representation. This reduces compile-time dependencies and conceptually clarifies AddrMan's interface from the implementation specifics.
Since the unit & fuzz tests currently rely on accessing AddrMan internals, this PR introduces addrman_impl.h, which is exclusively imported by addrman.cpp and test files.
ACKs for top commit:
jnewbery:
ACK 021f86953e8a1dff8ecc768186368d345c865cc2
GeneFerneau:
utACK [021f869](021f86953e)
mzumsande:
ACK 021f86953e8a1dff8ecc768186368d345c865cc2
rajarshimaitra:
Concept + Code Review ACK 021f86953e
theuni:
ACK 021f86953e8a1dff8ecc768186368d345c865cc2
Tree-SHA512: aa70cb77927a35c85230163c0cf6d3872382d79048b0fb79341493caa46f8e91498cb787d8b06aba4da17b2f921f2230e73f3d66385519794fff86a831b3a71d
853c4edb70f897a6a7165abaea4a303d7d448721 [net] Remove asmap argument from CNode::CopyStats() (John Newbery)
9fd5618610e91e3949536c5122cf31eb58c9aa6b [asmap] Make DecodeAsmap() a utility function (John Newbery)
bfdf4ef334a16ef6108a658bf4f8514754128c18 [asmap] Remove SanityCheckASMap() from netaddress (John Newbery)
07a9eccb60485e71494664cc2b1964ae06a3dcf0 [net] Remove CConnman::Options.m_asmap (John Newbery)
Pull request description:
These small cleanups to the asmap code are the first 4 commits from #22910. They're minor improvements that are independently useful whether or not 22910 is merged.
ACKs for top commit:
naumenkogs:
ACK 853c4edb70f897a6a7165abaea4a303d7d448721
theStack:
Concept and code-review ACK 853c4edb70f897a6a7165abaea4a303d7d448721 🗺️
fanquake:
ACK 853c4edb70f897a6a7165abaea4a303d7d448721
Tree-SHA512: 64783743182592ac165df6ff8d18870b63861e9204ed722c207fca6938687aac43232a5ac4d8228cf8b92130ab0349de1b410a2467bb5a9d60dd9a7221b3b85b
724c4975622bc22cedc3f3814dfc8e66cf8371f7 [fuzz] Add ConsumeAsmap() function (John Newbery)
5840476714ffebb2599999c85a23b52ebcff6090 [addrman] Make m_asmap private (John Newbery)
f9002cb5dbd573cd9ca200de21319fa296e26055 [net] Rename the copyStats arg from m_asmap to asmap (John Newbery)
f572f2b2048994b3b50f4cfd5de19e40b1acfb22 [addrman] Set m_asmap in CAddrMan initializer list (John Newbery)
593247872decd6d483a76e96d79433247226ad14 [net] Remove CConnMan::SetAsmap() (John Newbery)
50fd77045e2f858a53486b5e02e1798c92ab946c [init] Read/decode asmap before constructing addrman (John Newbery)
Pull request description:
Commit 181a1207 introduced an initialization order bug: CAddrMan's m_asmap must be set before deserializing peers.dat.
The first commit restores the correct initialization order. The remaining commits make `CAddrMan::m_asmap` usage safer:
- don't reach into `CAddrMan`'s internal data from `CConnMan`
- set `m_asmap` in the initializer list and make it const
- make `m_asmap` private, and access it (as a reference to const) from a getter.
This ensures that peers.dat deserialization must happen after setting m_asmap, since m_asmap is set during CAddrMan construction.
ACKs for top commit:
mzumsande:
Tested ACK 724c4975622bc22cedc3f3814dfc8e66cf8371f7
amitiuttarwar:
code review but utACK 724c497562
naumenkogs:
utACK 724c4975622bc22cedc3f3814dfc8e66cf8371f7
vasild:
ACK 724c4975622bc22cedc3f3814dfc8e66cf8371f7
MarcoFalke:
review ACK 724c4975622bc22cedc3f3814dfc8e66cf8371f7 👫
Tree-SHA512: 684a4cf9e3d4496c9997fb2bc4ec874809987055c157ec3fad1d2143b8223df52b5a0af787d028930b27388c8efeba0aeb2446cb35c337a5552ae76112ade726
The m_ prefix indicates that a variable is a data member. Using it as
a parameter name is misleading.
Also update the name of the function from copyStats to CopyStats to
comply with our style guide.
This logic is a no-op since it was introduced in commit
f9f5cfc50637f2cd1540923caf337e2651ec1625.
m_addr_name is never initialized to the empty string, because
ToStringIPPort never returns an empty string.
82b6f89819e55af26f5264678e0f93052934bcb3 [style] Small style improvements to DNS parameters (Amiti Uttarwar)
4c89e24f64c1dc1a56a3bcb6b5e2b4fb95e8b29f [test] Test the delay before querying DNS seeds (Amiti Uttarwar)
6395c8ed5689ea72e9a1618f14551775246f6361 [test] Test the interactions between -forcednsseed and -dnsseed (Amiti Uttarwar)
6f6b7df6bdcf863af160c0426e3a22028ca8259a [init] Disallow starting up with conflicting paramters for -dnsseed and -forcednsseed (Amiti Uttarwar)
26d0ffe4f2573e0297c9b0e095c2a0868929b08b [test] Test -forcednsseed causes querying DNS seeds (Amiti Uttarwar)
35851450a928ffacca240fadbf1747a42d5ba256 [test] Test the interactions between -connect and -dnsseed (Amiti Uttarwar)
75c05af361552eeecd100cee8cc40d4cd5a3aa27 [test] Test logic to query DNS seeds with block-relay-only connections (Amiti Uttarwar)
9c0871977839c28636eff975748182888299cd2b [test] Introduce test logic to query DNS seeds (Amiti Uttarwar)
Pull request description:
This PR adds a DNS seed to the regtest chain params to enable testing the DNS seed querying logic of `CConnman::ThreadDNSAddressSeed` and relevant startup parameters. Adds coverage for the changes in #22013 (and then some).
The main behavioral change to bitcoind is that this PR disallows starting up with conflicting parameters for `-dnsseed` and `-forcednsseed`.
The tests include:
* parameter interactions of different combinations of `-connect`, `-dnsseed` and `-forcednsseed`
* the delay before querying DNS seeds depending on how many addresses are in the addrman
* the behavior of `-forcednsseed`
* skipping DNS querying if we have outbound full relay connections & not block-relay-only connections
Huge props to mzumsande for identifying the timing technique for testing successful connections before running `ThreadDNSAddressSeed` 🙌🏽
ACKs for top commit:
mzumsande:
ACK 82b6f89819e55af26f5264678e0f93052934bcb3
jnewbery:
reACK 82b6f89819e55af26f5264678e0f93052934bcb3
Tree-SHA512: 9f0c29bfbf99426727e79c0a25606ae09deab91a92e3c5cee7f84c3ca7503a8ac9ab85a85c51841d40b164ef8c991326070f0b2f41d075fb7985df26f6e95d6d
5730a43703f7e5a5ca26245ba3b55fbdd027d0b6 test: Add functional test for AddrFetch connections (Martin Zumsande)
c34ad3309f93979b274a37de013502b05d25fad8 net, rpc: Enable AddrFetch connections for functional testing (Martin Zumsande)
533500d9072b7d5a36a6491784bdeb9247e91fb0 p2p: Add timeout for AddrFetch peers (Martin Zumsande)
b6c5d1e450dde6a54bd785504c923adfb45c7060 p2p: AddrFetch - don't disconnect on self-announcements (Martin Zumsande)
Pull request description:
AddrFetch connections (old name: oneshots) are intended to be short-lived connections on which we ask a peer for addresses via `getaddr` and disconnect after receiving them.
This is done by disconnecting after receiving the first `addr`. However, it is no longer working as intended, because nowadays, the first `addr` a typical bitcoin core node sends is its self-announcement.
So we'll disconnect before the peer gets a chance to answer our `getaddr`.
I checked that this affects both `-seednode` peers specified manually, and DNS seeds when AddrFetch is used as a fallback if DNS doesn't work for us.
The current behavior of getting peers via AddrFetch when starting with an empty addrman would be to connect to the peer, receive its self-announcement and add it to addrman, disconnect, reconnect to the same peer again as a full outbound (no other addresses in addrman) and then receive more `addr`. This is silly and not in line with AddrFetch peer being intended to be short-lived peers.
Fix this by only disconnecting after receiving an `addr` message of size > 1.
[Edit] As per review discussion, this PR now also adds a timeout after which we disconnect if we haven't received any suitable `addr`, and a functional test.
ACKs for top commit:
amitiuttarwar:
reACK 5730a43703f7e5a5ca26245ba3b55fbdd027d0b6
naumenkogs:
ACK 5730a43703f7e5a5ca26245ba3b55fbdd027d0b6
jnewbery:
ACK 5730a43703
Tree-SHA512: 8a81234f37e827705138eb254223f7f3b3bf44a06cb02126fc7990b0d231b9bd8f07d38d185cc30d55bf35548a6fdc286b69602498d875b937e7c58332158bf9
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
