ca185cf5a1 doc: Document differences in bitcoind and bitcoin-qt locale handling (practicalswift)
Pull request description:
Document differences in `bitcoind` and `bitcoin-qt` locale handling.
Since this seems to be the root cause to the locale dependency issues we've seen over the years I thought it was worth documenting :)
Note that 1.) `QLocale` (used by Qt), 2.) C locale (used by locale-sensitive C standard library functions/POSIX functions and some parts of the C++ standard library such as `std::to_string`) and 3.) C++ locale (used by the C++ input/output library) are three separate things. This comment is about the perhaps surprising interference with the C locale (2) that takes place as part of the Qt initialization.
ACKs for top commit:
hebasto:
re-ACK ca185cf5a1
Tree-SHA512: e51c32f3072c506b0029a001d8b108125e1acb4f2b6a48a6be721ddadda9da0ae77a9b39ff33f9d9eebabe2244c1db09e8502e3e7012d7a5d40d98e96da0dc44
8e35bf5906 scripted-diff: rename misbehavior members (John Newbery)
1f96d2e673 [net processing] Move misbehavior tracking state to Peer (John Newbery)
7cd4159ac8 [net processing] Add Peer (John Newbery)
aba03359a6 [net processing] Remove CNodeState.name (John Newbery)
Pull request description:
We currently have two structures for per-peer data:
- `CNode` in net, which should just contain connection layer data (eg socket, send/recv buffers, etc), but currently also contains some application layer data (eg tx/block inventory).
- `CNodeState` in net processing, which contains p2p application layer data, but requires cs_main to be locked for access.
This PR adds a third struct `Peer`, which is for p2p application layer data, and doesn't require cs_main. Eventually all application layer data from `CNode` should be moved to `Peer`, and any data that doesn't strictly require cs_main should be moved from `CNodeState` to `Peer` (probably all of `CNodeState` eventually).
`Peer` objects are stored as shared pointers in a net processing global map `g_peer_map`, which is protected by `g_peer_mutex`. To use a `Peer` object, `g_peer_mutex` is locked, a copy of the shared pointer is taken, and the lock is released. Individual members of `Peer` are protected by different mutexes that guard related data. The lifetime of the `Peer` object is managed by the shared_ptr refcount.
This PR adds the `Peer` object and moves the misbehaving data from `CNodeState` to `Peer`. This allows us to immediately remove 15 `LOCK(cs_main)` instances.
For more motivation see #19398
ACKs for top commit:
laanwj:
Code review ACK 8e35bf5906
troygiorshev:
reACK 8e35bf5906 via `git range-diff master 9510938 8e35bf5`
theuni:
ACK 8e35bf5906.
jonatack:
ACK 8e35bf5906 keeping in mind Cory's comment (https://github.com/bitcoin/bitcoin/pull/19607#discussion_r470173964) for the follow-up
Tree-SHA512: ad84a92b78fb34c9f43813ca3dfbc7282c887d55300ea2ce0994d134da3e0c7dbc44d54380e00b13bb75a57c28857ac3236bea9135467075d78026767a19e4b1
4ec49f8d1e qt: Leverage the default "Create new receiving address" button (Hennadii Stepanov)
4227a8e1f3 qt: Make "Create new receiving address" default unconditionally (Hennadii Stepanov)
Pull request description:
Fix#24
The first commit:
- visual improvement with no behavior change
The second commit:
- removes a bunch of LOCs
- slightly change behavior and makes it standard
With this PR:
ACKs for top commit:
Saibato:
Concept tACK 4227a8e1f34ec49f8d1e
promag:
Tested ACK 4ec49f8d1e on macos.
Tree-SHA512: 3403d5ee96ec139491c7e23b24a24d9239fe55c58d99cbd4cd13bc877f76f992ed011c09e2af35b2a63be1a2371b95f6ac719325396dcc8333cf3eb7fa2e3d2c
7b6d0f10a7 Remove old check for 3-byte shifted IP addresses from pre-0.2.9 node messages (Raúl Martínez (RME))
Pull request description:
The change removes an old check for IPv6 addresses in range ::ff:ff00:0:0:0/72 that were created due to a bug in size field of addr messages for 0.2.8 nodes and before.
This check is no longer needed as they are no more pre 0.2.9 nodes on the network (as per bitnodes network snapshot).
Credits for discovering this go to sipa in https://github.com/bitcoin/bitcoin/pull/19628#discussion_r475907453
Thanks for the attention!
ACKs for top commit:
sipa:
utACK 7b6d0f10a7
vasild:
ACK 7b6d0f1
Tree-SHA512: c5fab59dda2acafe143f607a4c5b636a54ac76fba651cad1ad1b09c94e88ab39503a31c2244c8f2664da68456c2a870c601d8894139c55cde9ece8161913ed2e
d3e8adfada util: remove c-string interfaces for DecodeBase58{Check} (Sebastian Falbesoner)
Pull request description:
This micro-PR gets rid of base58 function interfaces that are redundant in terms of c-string / std::string variants; the c-string interface for `DecodeBase58Check` is completely unused outside the base58 module, while the c-string interface for `DecodeBase58` is only used in unit tests, where an implicit conversion to std::string is not problematic.
ACKs for top commit:
practicalswift:
ACK d3e8adfada -- patch looks correct
laanwj:
Code review ACK d3e8adfada
Tree-SHA512: 006a4a1e23b11385f60820c188b8e6b1634a182ca36e29a6580f72150214c65a3fdb273ec439165f26ba88a42d2bf5bab1cf3666a9eaee222fb4e1c00aeba433
c91b241b48 Updated outdated help command for getblocktemplate (fixes#19625) (Jake Leventhal)
Pull request description:
**Summary of Changes**
* Removed coinbasetxn from the help outputs
* Added the missing name for transactions in the help outputs
* Added help outputs for longpollid and default_witness_commitment
* Added more clarity to capabilities, rules, and coinbaseaux
**Rationale**
The outputs from the help command for `getblocktemplate` are outdated and don't reflect the actual results from `getblocktemplate` (see #19625 for more details)
Fixes#19625.
ACKs for top commit:
laanwj:
ACK c91b241b48
fjahr:
utACK c91b241b48
Tree-SHA512: ee443af4bc3b2838dfd92e2705f344256ee785ae720e505fffea9b0ec5b75930e3b1374bae59b36d5da57c85c9aefe4d62504b028b893d6f2914dccf1e34c658
The change removes an old check for IPv6 addresses in range ::ff:ff00:0:0:0/72 that were created due to a bug in size field of addr messages for 0.2.8 nodes and before.
This check is no longer needed as they are no more pre 0.2.9 nodes on the network (as per bitnodes network snapshot).
Credits for discovering this go to sipa.
df536883d2 chain: Remove UB CChain comparison (Carl Dong)
Pull request description:
Comparing two empty `CChain`s is currently undefined behaviour, and resulted in false assertion failures when comparing identical empty `CChain`s in local testing.
Let's just remove this comparison operator since it doesn't seem to be used anywhere.
ACKs for top commit:
practicalswift:
ACK df536883d2 -- patch is guaranteed to be correct :)
MarcoFalke:
cr ACK df536883d2
Tree-SHA512: db10bac364fc965b56abf7a5bac48018786b14806ffe107e3e8eb24d5004a29331f3387dfe3409a3452a6750d3329e3f354265d787ebb3abfccabe77b28a54d5
cc26fab48d tests: Add fuzzing harness for CNode (practicalswift)
Pull request description:
Add fuzzing harness for `CNode`.
See [`doc/fuzzing.md`](https://github.com/bitcoin/bitcoin/blob/master/doc/fuzzing.md) for information on how to fuzz Bitcoin Core. Don't forget to contribute any coverage increasing inputs you find to the [Bitcoin Core fuzzing corpus repo](https://github.com/bitcoin-core/qa-assets).
Happy fuzzing :)
Top commit has no ACKs.
Tree-SHA512: e6330e5de5b2eb44d3bd91a885e69ebb625bfd1cb2499338aeb3997ff0268848434e651126fe68a8cadd7235c391e61a40d6408ee26e457faf73572e0c375f6b
b6dcc6d741 gui: Clarify block height label (Hennadii Stepanov)
Pull request description:
Prefer "block height" instead of "number of blocks".
This was done while testing https://github.com/bitcoin/bitcoin/pull/16981.
ACKs for top commit:
michaelfolkson:
ACK b6dcc6d741. I don't think there are any other obvious examples in the GUI where "block height" should replace "number of blocks" except for translations.
MarcoFalke:
cr ACK b6dcc6d741
Tree-SHA512: ec3b48c1af5d613ed657ad51f2caddea774376736ecc02343d54518986e35ec37f1745b059814b5be92b5e5c2bb2970d17159b24c6e88b9316803d4de5327c31
a99a3c0bd6 rpc: Validate provided keys for query_options parameter in listunspent (pasta)
Pull request description:
At Dash, one of our developers was working with the `listunspent` RPC command, but instead of saying "minimumAmount" he said "minimmumAmount" as such the RPC wasn't working as expected.
In https://github.com/dashpay/dash/pull/3507 we implemented a check so that `listunspent` returns an error if an unrecognized option is given. I figured I might as well adapt the code and throw up a PR here.
Cheers!
ACKs for top commit:
adaminsky:
ACK `a99a3c0bd`
meshcollider:
Seems fine to me. utACK a99a3c0bd6
Tree-SHA512: 9fccf14979849879a51b352afa3e1932ce4a6cfc2ee97b8d405ec6e65673fe94e302795e3ec0b440e6d252f13acda620e1f6a0e86c3fa918883c3fb4600a372c
3de365e4f1 build: replace wingenminiupnpcstrings sed with a patch in miniupnpc package (fanquake)
bbc01a753d build: replace qtranslations lrelease sed with a patch in qt package (fanquake)
c723e4176e build: replace FreeType back-compat sed with a patch in qt package (fanquake)
3aaa39d436 build: replace pwd sed in qt package with a patch (fanquake)
9d440f4e11 build: remove no-longer needed qt workaround (fanquake)
bf85eace1a build: remove no-longer needed qt configure workaround (fanquake)
4af59a407a build: use patch rather than sed in zeromq package (fanquake)
cc107a3af1 build: use patch rather than sed in native_cctools package (fanquake)
865cb23a48 build: use patch rather than sed in fontconfig package (fanquake)
335bd7f8bc build: use patch rather than sed in Boost package (fanquake)
f36140d00c build: use patch rather than sed in bdb package (fanquake)
Pull request description:
While using `sed` can be handy to use for a quick-fix, these instances accumulate, and can become unmaintainable. Not only that, but using sed isn't necessarily robust and it can fail silently. Most of our usage is also missing any documentation explaining why something is being done, when it should be updated/removed etc.
Rather than relying on sed going forward, where possible, I've converted our sed usage into patches. These are easier to maintain, contain documentation, and should fail loudly when they don't apply.
The remaining sed usage, (1 in miniupnpc, the rest in qt), are non-trivial to remove, as they are using build-time variables, or some input from the environment.
This also steals 2 related commits out of #19716.
Related to #16838.
ACKs for top commit:
hebasto:
re-ACK 3de365e4f1, only `drop_lrelease_dependency.patch` updated. Travis makes ARM build without errors now.
theuni:
ACK 3de365e4f1.
Tree-SHA512: b39afcb237e4421f9caabbd665af93fd2e749a1cdd42b1d5ee2261059120005c0e82994d315e679c317d23794eab5c7727f51cae403c94a9c4e4fd7eee9e7ee6
d841301010 test: Add docstring to wait_until() in util.py to warn about its usage (Seleme Topuz)
1343c86c7c test: Update wait_until usage in tests not to use the one from utils (Seleme Topuz)
Pull request description:
Replace global (from [test_framework/util.py](https://github.com/bitcoin/bitcoin/blob/master/test/functional/test_framework/util.py#L228)) `wait_until()` usages with the ones provided by `BitcoinTestFramework` and `P2PInterface` classes.
The motivation behind this change is that the `util.wait_until()` expects a timeout, timeout_factor and lock and it is not aware of the context of the test framework. `BitcoinTestFramework` offers a `wait_until()` which has an understandable amount of default `timeout` and a shared `timeout_factor`. Moreover, on top of these, `mininode.wait_until()` also has a shared lock.
closes#19080
ACKs for top commit:
MarcoFalke:
ACK d841301010🦆
kallewoof:
utACK d841301010
Tree-SHA512: 81604f4cfa87fed98071a80e4afe940b3897fe65cf680a69619a93e97d45f25b313c12227de7040e19517fa9c003291b232f1b40b2567aba0148f22c23c47a88
fafc9d5af4 test: Fix intermittent issue in wallet_bumpfee (MarcoFalke)
fa347b2f25 test: Select at least the fee in wallet_bumpfee to avoid negative amounts (MarcoFalke)
Pull request description:
With a "dirty" mempool a transaction might fail to be accepted intermittently. For example,
* https://travis-ci.org/github/bitcoin-core/gui/jobs/719916499#L6773 Fails acceptance
* https://travis-ci.org/github/bitcoin-core/gui/jobs/719916499#L6954 Test fails
Fix the issue by clearing the mempool between subtests
ACKs for top commit:
promag:
Code review ACK fafc9d5af4.
Tree-SHA512: 23fb6decb6343d19eafddcbdb7da0551f6be11325d1c97c30e563944000aeb02bcc4b24904d204b132c093dc1acf28445fa1fd08bfe8d8b52ddd1de51c33eeb6
519cae8fd6 gui: Delay interfaces::Node initialization (Russell Yanofsky)
102abff9eb gui: Replace interface::Node references with pointers (Russell Yanofsky)
91aced7c7e gui: Remove unused interfaces::Node references (Russell Yanofsky)
e133631625 gui: Partially revert #10244 gArgs and Params changes (Russell Yanofsky)
Pull request description:
This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/projects/10).
---
This is a partial revert of https://github.com/bitcoin/bitcoin/pull/10244. It changes gui code to go back to using gArgs and Params() functions directly instead of using interfaces::Node to handle arguments.
These changes were originally pushed as part of https://github.com/bitcoin/bitcoin/pull/19461. Motivation is to support a new GUI process connecting to an already running node process. Details are explained in commit messages, but in addition to spawning a new bitcoin-node process, we want bitcoin-gui to connect to an existing bitcoin-node process. So for that reason it should be able to parse its own parameters, rather than rely on the node.
ACKs for top commit:
MarcoFalke:
re-ACK 519cae8fd6, only change is rebase and addressed nits of my previous review last week 🌄
Tree-SHA512: 9c339dd82ba78bcc7b887b84d872f35ccc7dfa3d271691e6eafe8a2048cbbe3bdde1e810ce33d0714d75d048c9de3470e9e9b6f8306a6047d1cb3548f6858dc8
e2aa1a585a util: make EncodeBase64 consume Spans (Sebastian Falbesoner)
2bc207190e util: make EncodeBase32 consume Spans (Sebastian Falbesoner)
Pull request description:
To simplify the interface of the Base32/Base64 encoding functions for raw data, this PR changes them from taking two arguments (pointer and length) to just one Span. Most calls to `EncodeBase64` pass data from `CDataStream` instances, which unfortunately internally work with `char*` pointers rather than `unsigned char*`, but thanks to the recently introduced `MakeUCharSpan` helper, converting them is quite easy.
ACKs for top commit:
MarcoFalke:
ACK e2aa1a585a🐮
vasild:
ACK e2aa1a585
Tree-SHA512: 43bd3bd2ee8e3be2474db0a81dae9d9e88fac2464b96d1b042147106ed7433799dcba3000c69990511ecfc697b0c7306ce85f2ecb2293e2e44fd356c9694b150
This is needed to allow bitcoin-gui to connect to existing node process with
-ipcconnect instead of spawning a new process. It's possible to spawn a new
bitcoin-node process without knowing the current data dir or network, but
connecting to an existing bitcoin-node requires knowing the datadir and network
first.
No change in behavior. Replacing references with pointers allows Node interface
creation to be delayed until later during gui startup next commit to support
implementing -ipcconnect option
Change gui code to use gArgs, Params() functions directly instead of going
through interfaces::Node.
Remotely accessing bitcoin-node ArgsManager from bitcoin-gui works fine in
https://github.com/bitcoin/bitcoin/pull/10102, when bitcoin-gui spawns a new
bitcoin-node process and controls its startup, but for bitcoin-gui to support
-ipcconnect option in https://github.com/bitcoin/bitcoin/pull/19461 and connect
to an existing bitcoin-node process, it needs ability to parse arguments itself
before connecting out.
This change also simplifies https://github.com/bitcoin/bitcoin/pull/10102 a
bit, by making the bitcoin-gui -> bitcoin-node startup sequence more similar to
the bitcoin-node -> bitcoin-wallet startup sequence where the parent process
parses arguments and passes them to the child process instead of the parent
process using the child process to parse arguments.
d5800da519 [test] Remove final references to mininode (John Newbery)
5e8df3312e test: resort imports (John Newbery)
85165d4332 scripted-diff: Rename mininode to p2p (John Newbery)
9e2897d020 scripted-diff: Rename mininode_lock to p2p_lock (John Newbery)
Pull request description:
New contributors are often confused by the terminology in the test framework, and what the difference between a _node_ and a _peer_ is. To summarize:
- a 'node' is a bitcoind instance. This is the thing whose behavior is being tested. Each bitcoind node is managed by a python `TestNode` object which is used to start/stop the node, manage the node's data directory, read state about the node (eg process status, log file), and interact with the node over different interfaces.
- one of the interfaces that we can use to interact with the node is the p2p interface. Each connection to a node using this interface is managed by a python `P2PInterface` or derived object (which is owned by the `TestNode` object). We can open zero, one or many p2p connections to each bitcoind node. The node sees these connections as 'peers'.
For historic reasons, the word 'mininode' has been used to refer to those p2p interface objects that we use to connect to the bitcoind node (the code was originally taken from the 'mini-node' branch of https://github.com/jgarzik/pynode/tree/mini-node). However that name has proved to be confusing for new contributors, so rename the remaining references.
ACKs for top commit:
amitiuttarwar:
ACK d5800da519
MarcoFalke:
ACK d5800da519🚞
Tree-SHA512: 2c46c2ac3c4278b6e3c647cfd8108428a41e80788fc4f0e386e5b0c47675bc687d94779496c09a3e5ea1319617295be10c422adeeff2d2bd68378e00e0eeb5de
fa9d5902f7 scripted-diff: gArgs -> args (MarcoFalke)
fa33bc2dab init: Capture copy of blocknotify setting for BlockNotifyCallback (MarcoFalke)
fa40017706 init: Pass reference to ArgsManager around instead of relying on global (MarcoFalke)
Pull request description:
The gArgs global has several issues:
* gArgs is used by each process (bitcoind, bitcoin-qt, bitcoin-wallet, bitcoin-cli, bitcoin-tx, ...), but it is hard to determine which arguments are actually used by each process. For example arguments that have never been registered, but are still used, will always return the fallback value.
* Tests may run several sub-tests, which need different settings. So globals will have to be overwritten, but that is fragile on its own: e.g. https://github.com/bitcoin/bitcoin/pull/19704#issuecomment-678259092 or #19511
The goal is to remove gArgs, but as a first step in that direction this pull will change gArgs in init to use a passed-in reference instead.
ACKs for top commit:
ryanofsky:
Code review ACK fa9d5902f7. Looks good. Nice day to remove some globals, and add some lambdas 👍
fanquake:
ACK fa9d5902f7 - I'm not as familiar with the settings & argument handling code, but this make sense, and is a step in the right direction towards a reduction in the usage of globals. Not a huge fan of the clang-formatting in the scripted diff.
jonasschnelli:
Concept ACK fa9d5902f7
Tree-SHA512: ed00db5f826566c7e3b4d0b3d2ee0fc1a49a6e748e04e5c93bdd694ac7da5598749e73937047d5fce86150d764a067d2ca344ba4ae3eb2704cc5c4fa0d20940f
fad84b7e14 test: Activate segwit in TestChain100Setup (MarcoFalke)
fa11ff2980 test: Pass empty tx pool to block assembler (MarcoFalke)
fa96574b0d test: Move doxygen comment to header (MarcoFalke)
Pull request description:
This fixes not only a TODO in the code, but also prevents a never ending source of uninitialized reads. E.g.
* #18376
* https://github.com/bitcoin/bitcoin/pull/19704#issuecomment-678259092
* ...
ACKs for top commit:
jnewbery:
utACK fad84b7e14
Tree-SHA512: 64cf16a59656d49e022b603f3b06441ceae35a33a4253b4382bc8a89a56e08ad5412c8fa734d0fc7b58586f40ea6d57b348a3b4838bc6890a41ae2ec3902e378
102867c587 net: change CNetAddr::ip to have flexible size (Vasil Dimov)
1ea57ad674 net: don't accept non-left-contiguous netmasks (Vasil Dimov)
Pull request description:
(chopped off from #19031 to ease review)
Before this change `CNetAddr::ip` was a fixed-size array of 16 bytes,
not being able to store larger addresses (e.g. TORv3) and encoded
smaller ones as 16-byte IPv6 addresses.
Change its type to `prevector`, so that it can hold larger addresses and
do not disguise non-IPv6 addresses as IPv6. So the IPv4 address
`1.2.3.4` is now encoded as `01020304` instead of
`00000000000000000000FFFF01020304`.
Rename `CNetAddr::ip` to `CNetAddr::m_addr` because it is not an "IP" or
"IP address" (TOR addresses are not IP addresses).
In order to preserve backward compatibility with serialization (where
e.g. `1.2.3.4` is serialized as `00000000000000000000FFFF01020304`)
introduce `CNetAddr` dedicated legacy serialize/unserialize methods.
Adjust `CSubNet` accordingly. Still use `CSubNet::netmask[]` of fixed 16
bytes, but use the first 4 for IPv4 (not the last 4). Do not accept
invalid netmasks that have 0-bits followed by 1-bits and only allow
subnetting for IPv4 and IPv6.
Co-authored-by: Carl Dong <contact@carldong.me>
ACKs for top commit:
sipa:
utACK 102867c587
MarcoFalke:
Concept ACK 102867c587
ryanofsky:
Code review ACK 102867c587. Just many suggested updates since last review. Thanks for following up on everything!
jonatack:
re-ACK 102867c587 diff review, code review, build/tests/running bitcoind with ipv4/ipv6/onion peers
kallewoof:
ACK 102867c587
Tree-SHA512: d60bf716cecf8d3e8146d2f90f897ebe956befb16f711a24cfe680024c5afc758fb9e4a0a22066b42f7630d52cf916318bedbcbc069ae07092d5250a11e8f762
9ab4cafabd Refactor Get{Prevout,Sequence,Outputs}Hash to Get{Prevouts,Sequences,Outputs}SHA256. (Jeremy Rubin)
6510d0ff41 Add SHA256Uint256 helper functions (Jeremy Rubin)
b475d7d0fa Add single sha256 call to CHashWriter (Jeremy Rubin)
Pull request description:
Opened as an alternative to #18071 to be more similar to #17977.
I'm fine with either, deferring to others.
cc jnewbery Sjors
ACKs for top commit:
jnewbery:
Code review ACK 9ab4cafabd
jonatack:
Tested ACK 9ab4caf
fjahr:
tested ACK 9ab4cafabd
instagibbs:
reACK 9ab4cafabd
Tree-SHA512: 93a7a47697f1657f027b18407bdcce16963f6b23d12372e7ac8fd4ee96769b3e2639369f9956fee669cc881b6338641cddfeeef1516c7104cb50ef4b880bb0a7
1ccb9f30c0 Move Win32 defines to configure.ac to ensure they are globally defined (Luke Dashjr)
Pull request description:
#9245 no longer needs this, since the main `_WIN32_WINNT` got bumped by something else.
So rather than just lose it, might as well get it merged in independently.
I'm not aware of any practical effects, but it seems safer to use the same API versions everywhere.
ACKs for top commit:
fanquake:
ACK 1ccb9f30c0 - checked that the binaries produced are the same.
Tree-SHA512: 273e9186579197be01b443b6968e26b9a8031d356fabc5b73aa967fcdb837df195b7ce0fc4e4529c85d9b86da6f2d7ff1bf56a3ff0cbbcd8cee8a9c2bf70a244
Before this change `CNetAddr::ip` was a fixed-size array of 16 bytes,
not being able to store larger addresses (e.g. TORv3) and encoded
smaller ones as 16-byte IPv6 addresses.
Change its type to `prevector`, so that it can hold larger addresses and
do not disguise non-IPv6 addresses as IPv6. So the IPv4 address
`1.2.3.4` is now encoded as `01020304` instead of
`00000000000000000000FFFF01020304`.
Rename `CNetAddr::ip` to `CNetAddr::m_addr` because it is not an "IP" or
"IP address" (TOR addresses are not IP addresses).
In order to preserve backward compatibility with serialization (where
e.g. `1.2.3.4` is serialized as `00000000000000000000FFFF01020304`)
introduce `CNetAddr` dedicated legacy serialize/unserialize methods.
Adjust `CSubNet` accordingly. Still use `CSubNet::netmask[]` of fixed 16
bytes, but use the first 4 for IPv4 (not the last 4). Only allow
subnetting for IPv4 and IPv6.
Co-authored-by: Carl Dong <contact@carldong.me>
MarcoFalke
