Use serialization parameters for CAddress serialization

This also cleans up the addrman (de)serialization code paths to only
allow `Disk` serialization. Some unit tests previously forced a
`Network` serialization, which does not make sense, because Bitcoin Core
in production will always `Disk` serialize.
This cleanup idea was suggested by Pieter Wuille and implemented by Anthony
Towns.

Co-authored-by: Pieter Wuille <pieter@wuille.net>
Co-authored-by: Anthony Towns <aj@erisian.com.au>

src/addrdb.cpp

@@ -47,16 +47,16 @@ bool SerializeDB(Stream& stream, const Data& data)
 }
 
 template <typename Data>
-bool SerializeFileDB(const std::string& prefix, const fs::path& path, const Data& data, int version)
+bool SerializeFileDB(const std::string& prefix, const fs::path& path, const Data& data)
 {
     // Generate random temporary filename
     const uint16_t randv{GetRand<uint16_t>()};
     std::string tmpfn = strprintf("%s.%04x", prefix, randv);
 
-    // open temp output file, and associate with CAutoFile
+    // open temp output file
     fs::path pathTmp = gArgs.GetDataDirNet() / fs::u8path(tmpfn);
     FILE *file = fsbridge::fopen(pathTmp, "wb");
-    CAutoFile fileout(file, SER_DISK, version);
+    AutoFile fileout{file};
     if (fileout.IsNull()) {
         fileout.fclose();
         remove(pathTmp);
@@ -86,9 +86,9 @@ bool SerializeFileDB(const std::string& prefix, const fs::path& path, const Data
 }
 
 template <typename Stream, typename Data>
-void DeserializeDB(Stream& stream, Data& data, bool fCheckSum = true)
+void DeserializeDB(Stream& stream, Data&& data, bool fCheckSum = true)
 {
-    CHashVerifier<Stream> verifier(&stream);
+    HashVerifier verifier{stream};
     // de-serialize file header (network specific magic number) and ..
     unsigned char pchMsgTmp[4];
     verifier >> pchMsgTmp;
@@ -111,11 +111,10 @@ void DeserializeDB(Stream& stream, Data& data, bool fCheckSum = true)
 }
 
 template <typename Data>
-void DeserializeFileDB(const fs::path& path, Data& data, int version)
+void DeserializeFileDB(const fs::path& path, Data&& data)
 {
-    // open input file, and associate with CAutoFile
     FILE* file = fsbridge::fopen(path, "rb");
-    CAutoFile filein(file, SER_DISK, version);
+    AutoFile filein{file};
     if (filein.IsNull()) {
         throw DbNotFoundError{};
     }
@@ -175,10 +174,10 @@ bool CBanDB::Read(banmap_t& banSet)
 bool DumpPeerAddresses(const ArgsManager& args, const AddrMan& addr)
 {
     const auto pathAddr = args.GetDataDirNet() / "peers.dat";
-    return SerializeFileDB("peers", pathAddr, addr, CLIENT_VERSION);
+    return SerializeFileDB("peers", pathAddr, addr);
 }
 
-void ReadFromStream(AddrMan& addr, CDataStream& ssPeers)
+void ReadFromStream(AddrMan& addr, DataStream& ssPeers)
 {
     DeserializeDB(ssPeers, addr, false);
 }
@@ -191,7 +190,7 @@ util::Result<std::unique_ptr<AddrMan>> LoadAddrman(const NetGroupManager& netgro
     const auto start{SteadyClock::now()};
     const auto path_addr{args.GetDataDirNet() / "peers.dat"};
     try {
-        DeserializeFileDB(path_addr, *addrman, CLIENT_VERSION);
+        DeserializeFileDB(path_addr, *addrman);
         LogPrintf("Loaded %i addresses from peers.dat  %dms\n", addrman->Size(), Ticks<std::chrono::milliseconds>(SteadyClock::now() - start));
     } catch (const DbNotFoundError&) {
         // Addrman can be in an inconsistent state after failure, reset it
@@ -217,14 +216,14 @@ util::Result<std::unique_ptr<AddrMan>> LoadAddrman(const NetGroupManager& netgro
 void DumpAnchors(const fs::path& anchors_db_path, const std::vector<CAddress>& anchors)
 {
     LOG_TIME_SECONDS(strprintf("Flush %d outbound block-relay-only peer addresses to anchors.dat", anchors.size()));
-    SerializeFileDB("anchors", anchors_db_path, anchors, CLIENT_VERSION | ADDRV2_FORMAT);
+    SerializeFileDB("anchors", anchors_db_path, WithParams(CAddress::V2_DISK, anchors));
 }
 
 std::vector<CAddress> ReadAnchors(const fs::path& anchors_db_path)
 {
     std::vector<CAddress> anchors;
     try {
-        DeserializeFileDB(anchors_db_path, anchors, CLIENT_VERSION | ADDRV2_FORMAT);
+        DeserializeFileDB(anchors_db_path, WithParams(CAddress::V2_DISK, anchors));
         LogPrintf("Loaded %i addresses from %s\n", anchors.size(), fs::quoted(fs::PathToString(anchors_db_path.filename())));
     } catch (const std::exception&) {
         anchors.clear();

src/addrdb.h

@@ -16,12 +16,13 @@
 class ArgsManager;
 class AddrMan;
 class CAddress;
-class CDataStream;
+class DataStream;
 class NetGroupManager;
 
-bool DumpPeerAddresses(const ArgsManager& args, const AddrMan& addr);
 /** Only used by tests. */
-void ReadFromStream(AddrMan& addr, CDataStream& ssPeers);
+void ReadFromStream(AddrMan& addr, DataStream& ssPeers);
+
+bool DumpPeerAddresses(const ArgsManager& args, const AddrMan& addr);
 
 /** Access to the banlist database (banlist.json) */
 class CBanDB

src/addrman.cpp

@@ -171,8 +171,7 @@ void AddrManImpl::Serialize(Stream& s_) const
      */
 
     // Always serialize in the latest version (FILE_FORMAT).
-
+    ParamsStream s{CAddress::V2_DISK, s_};
-    OverrideStream<Stream> s(&s_, s_.GetType(), s_.GetVersion() | ADDRV2_FORMAT);
 
     s << static_cast<uint8_t>(FILE_FORMAT);
 
@@ -236,14 +235,8 @@ void AddrManImpl::Unserialize(Stream& s_)
     Format format;
     s_ >> Using<CustomUintFormatter<1>>(format);
 
-    int stream_version = s_.GetVersion();
+    const auto ser_params = (format >= Format::V3_BIP155 ? CAddress::V2_DISK : CAddress::V1_DISK);
-    if (format >= Format::V3_BIP155) {
+    ParamsStream s{ser_params, s_};
-        // Add ADDRV2_FORMAT to the version so that the CNetAddr and CAddress
-        // unserialize methods know that an address in addrv2 format is coming.
-        stream_version |= ADDRV2_FORMAT;
-    }
-
-    OverrideStream<Stream> s(&s_, s_.GetType(), stream_version);
 
     uint8_t compat;
     s >> compat;
@@ -1249,12 +1242,12 @@ void AddrMan::Unserialize(Stream& s_)
 }
 
 // explicit instantiation
-template void AddrMan::Serialize(HashedSourceWriter<CAutoFile>& s) const;
+template void AddrMan::Serialize(HashedSourceWriter<AutoFile>&) const;
-template void AddrMan::Serialize(CDataStream& s) const;
+template void AddrMan::Serialize(DataStream&) const;
-template void AddrMan::Unserialize(CAutoFile& s);
+template void AddrMan::Unserialize(AutoFile&);
-template void AddrMan::Unserialize(CHashVerifier<CAutoFile>& s);
+template void AddrMan::Unserialize(HashVerifier<AutoFile>&);
-template void AddrMan::Unserialize(CDataStream& s);
+template void AddrMan::Unserialize(DataStream&);
-template void AddrMan::Unserialize(CHashVerifier<CDataStream>& s);
+template void AddrMan::Unserialize(HashVerifier<DataStream>&);
 
 size_t AddrMan::Size(std::optional<Network> net, std::optional<bool> in_new) const
 {

src/hash.h

@@ -234,18 +234,18 @@ public:
 
 /** Writes data to an underlying source stream, while hashing the written data. */
 template <typename Source>
-class HashedSourceWriter : public CHashWriter
+class HashedSourceWriter : public HashWriter
 {
 private:
     Source& m_source;
 
 public:
-    explicit HashedSourceWriter(Source& source LIFETIMEBOUND) : CHashWriter{source.GetType(), source.GetVersion()}, m_source{source} {}
+    explicit HashedSourceWriter(Source& source LIFETIMEBOUND) : HashWriter{}, m_source{source} {}
 
     void write(Span<const std::byte> src)
     {
         m_source.write(src);
-        CHashWriter::write(src);
+        HashWriter::write(src);
     }
 
     template <typename T>

src/net.cpp

@@ -202,7 +202,8 @@ static std::vector<CAddress> ConvertSeeds(const std::vector<uint8_t> &vSeedsIn)
     const auto one_week{7 * 24h};
     std::vector<CAddress> vSeedsOut;
     FastRandomContext rng;
-    CDataStream s(vSeedsIn, SER_NETWORK, PROTOCOL_VERSION | ADDRV2_FORMAT);
+    DataStream underlying_stream{vSeedsIn};
+    ParamsStream s{CAddress::V2_NETWORK, underlying_stream};
     while (!s.eof()) {
         CService endpoint;
         s >> endpoint;

src/net_processing.cpp

@@ -1415,8 +1415,8 @@ void PeerManagerImpl::PushNodeVersion(CNode& pnode, const Peer& peer)
 
     const bool tx_relay{!RejectIncomingTxs(pnode)};
     m_connman.PushMessage(&pnode, CNetMsgMaker(INIT_PROTO_VERSION).Make(NetMsgType::VERSION, PROTOCOL_VERSION, my_services, nTime,
-            your_services, addr_you, // Together the pre-version-31402 serialization of CAddress "addrYou" (without nTime)
+            your_services, WithParams(CNetAddr::V1, addr_you), // Together the pre-version-31402 serialization of CAddress "addrYou" (without nTime)
-            my_services, CService(), // Together the pre-version-31402 serialization of CAddress "addrMe" (without nTime)
+            my_services, WithParams(CNetAddr::V1, CService{}), // Together the pre-version-31402 serialization of CAddress "addrMe" (without nTime)
             nonce, strSubVersion, nNodeStartingHeight, tx_relay));
 
     if (fLogIPs) {
@@ -3281,7 +3281,7 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type,
             nTime = 0;
         }
         vRecv.ignore(8); // Ignore the addrMe service bits sent by the peer
-        vRecv >> addrMe;
+        vRecv >> WithParams(CNetAddr::V1, addrMe);
         if (!pfrom.IsInboundConn())
         {
             m_addrman.SetServices(pfrom.addr, nServices);
@@ -3660,17 +3660,17 @@ void PeerManagerImpl::ProcessMessage(CNode& pfrom, const std::string& msg_type,
     }
 
     if (msg_type == NetMsgType::ADDR || msg_type == NetMsgType::ADDRV2) {
-        int stream_version = vRecv.GetVersion();
+        const auto ser_params{
-        if (msg_type == NetMsgType::ADDRV2) {
+            msg_type == NetMsgType::ADDRV2 ?
-            // Add ADDRV2_FORMAT to the version so that the CNetAddr and CAddress
+            // Set V2 param so that the CNetAddr and CAddress
             // unserialize methods know that an address in v2 format is coming.
-            stream_version |= ADDRV2_FORMAT;
+            CAddress::V2_NETWORK :
-        }
+            CAddress::V1_NETWORK,
+        };
 
-        OverrideStream<CDataStream> s(&vRecv, vRecv.GetType(), stream_version);
         std::vector<CAddress> vAddr;
 
-        s >> vAddr;
+        vRecv >> WithParams(ser_params, vAddr);
 
         if (!SetupAddressRelay(pfrom, *peer)) {
             LogPrint(BCLog::NET, "ignoring %s message from %s peer=%d\n", msg_type, pfrom.ConnectionTypeAsString(), pfrom.GetId());
@@ -5272,15 +5272,15 @@ void PeerManagerImpl::MaybeSendAddr(CNode& node, Peer& peer, std::chrono::micros
     if (peer.m_addrs_to_send.empty()) return;
 
     const char* msg_type;
-    int make_flags;
+    CNetAddr::Encoding ser_enc;
     if (peer.m_wants_addrv2) {
         msg_type = NetMsgType::ADDRV2;
-        make_flags = ADDRV2_FORMAT;
+        ser_enc = CNetAddr::Encoding::V2;
     } else {
         msg_type = NetMsgType::ADDR;
-        make_flags = 0;
+        ser_enc = CNetAddr::Encoding::V1;
     }
-    m_connman.PushMessage(&node, CNetMsgMaker(node.GetCommonVersion()).Make(make_flags, msg_type, peer.m_addrs_to_send));
+    m_connman.PushMessage(&node, CNetMsgMaker(node.GetCommonVersion()).Make(msg_type, WithParams(CAddress::SerParams{{ser_enc}, CAddress::Format::Network}, peer.m_addrs_to_send)));
     peer.m_addrs_to_send.clear();
 
     // we only send the big addr message once

src/netaddress.h

@@ -24,14 +24,6 @@
 #include <string>
 #include <vector>
 
-/**
- * A flag that is ORed into the protocol version to designate that addresses
- * should be serialized in (unserialized from) v2 format (BIP155).
- * Make sure that this does not collide with any of the values in `version.h`
- * or with `SERIALIZE_TRANSACTION_NO_WITNESS`.
- */
-static constexpr int ADDRV2_FORMAT = 0x20000000;
-
 /**
  * A network type.
  * @note An address may belong to more than one network, for example `10.0.0.1`
@@ -220,13 +212,23 @@ public:
         return IsIPv4() || IsIPv6() || IsTor() || IsI2P() || IsCJDNS();
     }
 
+    enum class Encoding {
+        V1,
+        V2, //!< BIP155 encoding
+    };
+    struct SerParams {
+        const Encoding enc;
+    };
+    static constexpr SerParams V1{Encoding::V1};
+    static constexpr SerParams V2{Encoding::V2};
+
     /**
      * Serialize to a stream.
      */
     template <typename Stream>
     void Serialize(Stream& s) const
     {
-        if (s.GetVersion() & ADDRV2_FORMAT) {
+        if (s.GetParams().enc == Encoding::V2) {
             SerializeV2Stream(s);
         } else {
             SerializeV1Stream(s);
@@ -239,7 +241,7 @@ public:
     template <typename Stream>
     void Unserialize(Stream& s)
     {
-        if (s.GetVersion() & ADDRV2_FORMAT) {
+        if (s.GetParams().enc == Encoding::V2) {
             UnserializeV2Stream(s);
         } else {
             UnserializeV1Stream(s);

src/protocol.h

@@ -390,35 +390,43 @@ public:
     CAddress(CService ipIn, ServiceFlags nServicesIn) : CService{ipIn}, nServices{nServicesIn} {};
     CAddress(CService ipIn, ServiceFlags nServicesIn, NodeSeconds time) : CService{ipIn}, nTime{time}, nServices{nServicesIn} {};
 
-    SERIALIZE_METHODS(CAddress, obj)
+    enum class Format {
+        Disk,
+        Network,
+    };
+    struct SerParams : CNetAddr::SerParams {
+        const Format fmt;
+    };
+    static constexpr SerParams V1_NETWORK{{CNetAddr::Encoding::V1}, Format::Network};
+    static constexpr SerParams V2_NETWORK{{CNetAddr::Encoding::V2}, Format::Network};
+    static constexpr SerParams V1_DISK{{CNetAddr::Encoding::V1}, Format::Disk};
+    static constexpr SerParams V2_DISK{{CNetAddr::Encoding::V2}, Format::Disk};
+
+    SERIALIZE_METHODS_PARAMS(CAddress, obj, SerParams, params)
     {
-        // CAddress has a distinct network serialization and a disk serialization, but it should never
-        // be hashed (except through CHashWriter in addrdb.cpp, which sets SER_DISK), and it's
-        // ambiguous what that would mean. Make sure no code relying on that is introduced:
-        assert(!(s.GetType() & SER_GETHASH));
         bool use_v2;
-        if (s.GetType() & SER_DISK) {
+        if (params.fmt == Format::Disk) {
             // In the disk serialization format, the encoding (v1 or v2) is determined by a flag version
             // that's part of the serialization itself. ADDRV2_FORMAT in the stream version only determines
             // whether V2 is chosen/permitted at all.
             uint32_t stored_format_version = DISK_VERSION_INIT;
-            if (s.GetVersion() & ADDRV2_FORMAT) stored_format_version |= DISK_VERSION_ADDRV2;
+            if (params.enc == Encoding::V2) stored_format_version |= DISK_VERSION_ADDRV2;
             READWRITE(stored_format_version);
             stored_format_version &= ~DISK_VERSION_IGNORE_MASK; // ignore low bits
             if (stored_format_version == 0) {
                 use_v2 = false;
-            } else if (stored_format_version == DISK_VERSION_ADDRV2 && (s.GetVersion() & ADDRV2_FORMAT)) {
+            } else if (stored_format_version == DISK_VERSION_ADDRV2 && params.enc == Encoding::V2) {
-                // Only support v2 deserialization if ADDRV2_FORMAT is set.
+                // Only support v2 deserialization if V2 is set.
                 use_v2 = true;
             } else {
                 throw std::ios_base::failure("Unsupported CAddress disk format version");
             }
         } else {
+            assert(params.fmt == Format::Network);
             // In the network serialization format, the encoding (v1 or v2) is determined directly by
-            // the value of ADDRV2_FORMAT in the stream version, as no explicitly encoded version
+            // the value of enc in the stream params, as no explicitly encoded version
             // exists in the stream.
-            assert(s.GetType() & SER_NETWORK);
+            use_v2 = params.enc == Encoding::V2;
-            use_v2 = s.GetVersion() & ADDRV2_FORMAT;
         }
 
         READWRITE(Using<LossyChronoFormatter<uint32_t>>(obj.nTime));
@@ -432,8 +440,8 @@ public:
             READWRITE(Using<CustomUintFormatter<8>>(obj.nServices));
         }
         // Invoke V1/V2 serializer for CService parent object.
-        OverrideStream<Stream> os(&s, s.GetType(), use_v2 ? ADDRV2_FORMAT : 0);
+        const auto ser_params{use_v2 ? CNetAddr::V2 : CNetAddr::V1};
-        SerReadWriteMany(os, ser_action, AsBase<CService>(obj));
+        READWRITE(WithParams(ser_params, AsBase<CService>(obj)));
     }
 
     //! Always included in serialization. The behavior is unspecified if the value is not representable as uint32_t.

src/test/addrman_tests.cpp

@@ -697,7 +697,7 @@ BOOST_AUTO_TEST_CASE(addrman_serialization)
     auto addrman_asmap1_dup = std::make_unique<AddrMan>(netgroupman, DETERMINISTIC, ratio);
     auto addrman_noasmap = std::make_unique<AddrMan>(EMPTY_NETGROUPMAN, DETERMINISTIC, ratio);
 
-    CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
+    DataStream stream{};
 
     CAddress addr = CAddress(ResolveService("250.1.1.1"), NODE_NONE);
     CNetAddr default_source;
@@ -757,7 +757,7 @@ BOOST_AUTO_TEST_CASE(remove_invalid)
     // Confirm that invalid addresses are ignored in unserialization.
 
     auto addrman = std::make_unique<AddrMan>(EMPTY_NETGROUPMAN, DETERMINISTIC, GetCheckRatio(m_node));
-    CDataStream stream(SER_NETWORK, PROTOCOL_VERSION);
+    DataStream stream{};
 
     const CAddress new1{ResolveService("5.5.5.5"), NODE_NONE};
     const CAddress new2{ResolveService("6.6.6.6"), NODE_NONE};
@@ -940,9 +940,9 @@ BOOST_AUTO_TEST_CASE(addrman_evictionworks)
     BOOST_CHECK(!addr_pos36.tried);
 }
 
-static CDataStream AddrmanToStream(const AddrMan& addrman)
+static auto AddrmanToStream(const AddrMan& addrman)
 {
-    CDataStream ssPeersIn(SER_DISK, CLIENT_VERSION);
+    DataStream ssPeersIn{};
     ssPeersIn << Params().MessageStart();
     ssPeersIn << addrman;
     return ssPeersIn;
@@ -972,7 +972,7 @@ BOOST_AUTO_TEST_CASE(load_addrman)
     BOOST_CHECK(addrman.Size() == 3);
 
     // Test that the de-serialization does not throw an exception.
-    CDataStream ssPeers1 = AddrmanToStream(addrman);
+    auto ssPeers1{AddrmanToStream(addrman)};
     bool exceptionThrown = false;
     AddrMan addrman1{EMPTY_NETGROUPMAN, !DETERMINISTIC, GetCheckRatio(m_node)};
 
@@ -989,7 +989,7 @@ BOOST_AUTO_TEST_CASE(load_addrman)
     BOOST_CHECK(exceptionThrown == false);
 
     // Test that ReadFromStream creates an addrman with the correct number of addrs.
-    CDataStream ssPeers2 = AddrmanToStream(addrman);
+    DataStream ssPeers2 = AddrmanToStream(addrman);
 
     AddrMan addrman2{EMPTY_NETGROUPMAN, !DETERMINISTIC, GetCheckRatio(m_node)};
     BOOST_CHECK(addrman2.Size() == 0);
@@ -998,9 +998,9 @@ BOOST_AUTO_TEST_CASE(load_addrman)
 }
 
 // Produce a corrupt peers.dat that claims 20 addrs when it only has one addr.
-static CDataStream MakeCorruptPeersDat()
+static auto MakeCorruptPeersDat()
 {
-    CDataStream s(SER_DISK, CLIENT_VERSION);
+    DataStream s{};
     s << ::Params().MessageStart();
 
     unsigned char nVersion = 1;
@@ -1019,7 +1019,7 @@ static CDataStream MakeCorruptPeersDat()
     std::optional<CNetAddr> resolved{LookupHost("252.2.2.2", false)};
     BOOST_REQUIRE(resolved.has_value());
     AddrInfo info = AddrInfo(addr, resolved.value());
-    s << info;
+    s << WithParams(CAddress::V1_DISK, info);
 
     return s;
 }
@@ -1027,7 +1027,7 @@ static CDataStream MakeCorruptPeersDat()
 BOOST_AUTO_TEST_CASE(load_addrman_corrupted)
 {
     // Test that the de-serialization of corrupted peers.dat throws an exception.
-    CDataStream ssPeers1 = MakeCorruptPeersDat();
+    auto ssPeers1{MakeCorruptPeersDat()};
     bool exceptionThrown = false;
     AddrMan addrman1{EMPTY_NETGROUPMAN, !DETERMINISTIC, GetCheckRatio(m_node)};
     BOOST_CHECK(addrman1.Size() == 0);
@@ -1041,7 +1041,7 @@ BOOST_AUTO_TEST_CASE(load_addrman_corrupted)
     BOOST_CHECK(exceptionThrown);
 
     // Test that ReadFromStream fails if peers.dat is corrupt
-    CDataStream ssPeers2 = MakeCorruptPeersDat();
+    auto ssPeers2{MakeCorruptPeersDat()};
 
     AddrMan addrman2{EMPTY_NETGROUPMAN, !DETERMINISTIC, GetCheckRatio(m_node)};
     BOOST_CHECK(addrman2.Size() == 0);

src/test/fuzz/addrman.cpp

@@ -49,7 +49,7 @@ void initialize_addrman()
 FUZZ_TARGET(data_stream_addr_man, .init = initialize_addrman)
 {
     FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
-    CDataStream data_stream = ConsumeDataStream(fuzzed_data_provider);
+    DataStream data_stream = ConsumeDataStream(fuzzed_data_provider);
     NetGroupManager netgroupman{ConsumeNetGroupManager(fuzzed_data_provider)};
     AddrMan addr_man(netgroupman, /*deterministic=*/false, GetCheckRatio());
     try {
@@ -78,12 +78,12 @@ CNetAddr RandAddr(FuzzedDataProvider& fuzzed_data_provider, FastRandomContext& f
             net = 6;
         }
 
-        CDataStream s(SER_NETWORK, PROTOCOL_VERSION | ADDRV2_FORMAT);
+        DataStream s{};
 
         s << net;
         s << fast_random_context.randbytes(net_len_map.at(net));
 
-        s >> addr;
+        s >> WithParams(CAddress::V2_NETWORK, addr);
     }
 
     // Return a dummy IPv4 5.5.5.5 if we generated an invalid address.
@@ -241,9 +241,7 @@ FUZZ_TARGET(addrman, .init = initialize_addrman)
     auto addr_man_ptr = std::make_unique<AddrManDeterministic>(netgroupman, fuzzed_data_provider);
     if (fuzzed_data_provider.ConsumeBool()) {
         const std::vector<uint8_t> serialized_data{ConsumeRandomLengthByteVector(fuzzed_data_provider)};
-        CDataStream ds(serialized_data, SER_DISK, INIT_PROTO_VERSION);
+        DataStream ds{serialized_data};
-        const auto ser_version{fuzzed_data_provider.ConsumeIntegral<int32_t>()};
-        ds.SetVersion(ser_version);
         try {
             ds >> *addr_man_ptr;
         } catch (const std::ios_base::failure&) {
@@ -295,7 +293,7 @@ FUZZ_TARGET(addrman, .init = initialize_addrman)
         in_new = fuzzed_data_provider.ConsumeBool();
     }
     (void)const_addr_man.Size(network, in_new);
-    CDataStream data_stream(SER_NETWORK, PROTOCOL_VERSION);
+    DataStream data_stream{};
     data_stream << const_addr_man;
 }
 
@@ -309,10 +307,10 @@ FUZZ_TARGET(addrman_serdeser, .init = initialize_addrman)
     AddrManDeterministic addr_man1{netgroupman, fuzzed_data_provider};
     AddrManDeterministic addr_man2{netgroupman, fuzzed_data_provider};
 
-    CDataStream data_stream(SER_NETWORK, PROTOCOL_VERSION);
+    DataStream data_stream{};
 
     FillAddrman(addr_man1, fuzzed_data_provider);
     data_stream << addr_man1;
     data_stream >> addr_man2;
     assert(addr_man1 == addr_man2);
-}
+}

src/test/fuzz/deserialize.cpp

@@ -24,6 +24,8 @@
 #include <pubkey.h>
 #include <script/keyorigin.h>
 #include <streams.h>
+#include <test/fuzz/fuzz.h>
+#include <test/fuzz/util.h>
 #include <test/util/setup_common.h>
 #include <undo.h>
 #include <version.h>
@@ -34,8 +36,6 @@
 #include <stdint.h>
 #include <unistd.h>
 
-#include <test/fuzz/fuzz.h>
-
 using node::SnapshotMetadata;
 
 namespace {
@@ -62,6 +62,34 @@ namespace {
 struct invalid_fuzzing_input_exception : public std::exception {
 };
 
+template <typename T, typename P>
+DataStream Serialize(const T& obj, const P& params)
+{
+    DataStream ds{};
+    ds << WithParams(params, obj);
+    return ds;
+}
+
+template <typename T, typename P>
+T Deserialize(DataStream&& ds, const P& params)
+{
+    T obj;
+    ds >> WithParams(params, obj);
+    return obj;
+}
+
+template <typename T, typename P>
+void DeserializeFromFuzzingInput(FuzzBufferType buffer, T&& obj, const P& params)
+{
+    DataStream ds{buffer};
+    try {
+        ds >> WithParams(params, obj);
+    } catch (const std::ios_base::failure&) {
+        throw invalid_fuzzing_input_exception();
+    }
+    assert(buffer.empty() || !Serialize(obj, params).empty());
+}
+
 template <typename T>
 CDataStream Serialize(const T& obj, const int version = INIT_PROTO_VERSION, const int ser_type = SER_NETWORK)
 {
@@ -79,7 +107,7 @@ T Deserialize(CDataStream ds)
 }
 
 template <typename T>
-void DeserializeFromFuzzingInput(FuzzBufferType buffer, T& obj, const std::optional<int> protocol_version = std::nullopt, const int ser_type = SER_NETWORK)
+void DeserializeFromFuzzingInput(FuzzBufferType buffer, T&& obj, const std::optional<int> protocol_version = std::nullopt, const int ser_type = SER_NETWORK)
 {
     CDataStream ds(buffer, ser_type, INIT_PROTO_VERSION);
     if (protocol_version) {
@@ -101,6 +129,11 @@ void DeserializeFromFuzzingInput(FuzzBufferType buffer, T& obj, const std::optio
     assert(buffer.empty() || !Serialize(obj).empty());
 }
 
+template <typename T, typename P>
+void AssertEqualAfterSerializeDeserialize(const T& obj, const P& params)
+{
+    assert(Deserialize<T>(Serialize(obj, params), params) == obj);
+}
 template <typename T>
 void AssertEqualAfterSerializeDeserialize(const T& obj, const int version = INIT_PROTO_VERSION, const int ser_type = SER_NETWORK)
 {
@@ -113,10 +146,11 @@ FUZZ_TARGET_DESERIALIZE(block_filter_deserialize, {
     BlockFilter block_filter;
     DeserializeFromFuzzingInput(buffer, block_filter);
 })
-FUZZ_TARGET_DESERIALIZE(addr_info_deserialize, {
+FUZZ_TARGET(addr_info_deserialize, .init = initialize_deserialize)
-    AddrInfo addr_info;
+{
-    DeserializeFromFuzzingInput(buffer, addr_info);
+    FuzzedDataProvider fdp{buffer.data(), buffer.size()};
-})
+    (void)ConsumeDeserializable<AddrInfo>(fdp, ConsumeDeserializationParams<CAddress::SerParams>(fdp));
+}
 FUZZ_TARGET_DESERIALIZE(block_file_info_deserialize, {
     CBlockFileInfo block_file_info;
     DeserializeFromFuzzingInput(buffer, block_file_info);
@@ -197,13 +231,6 @@ FUZZ_TARGET_DESERIALIZE(blockmerkleroot, {
     bool mutated;
     BlockMerkleRoot(block, &mutated);
 })
-FUZZ_TARGET_DESERIALIZE(addrman_deserialize, {
-    NetGroupManager netgroupman{std::vector<bool>()};
-    AddrMan am(netgroupman,
-               /*deterministic=*/false,
-               g_setup->m_node.args->GetIntArg("-checkaddrman", 0));
-    DeserializeFromFuzzingInput(buffer, am);
-})
 FUZZ_TARGET_DESERIALIZE(blockheader_deserialize, {
     CBlockHeader bh;
     DeserializeFromFuzzingInput(buffer, bh);
@@ -220,66 +247,62 @@ FUZZ_TARGET_DESERIALIZE(coins_deserialize, {
     Coin coin;
     DeserializeFromFuzzingInput(buffer, coin);
 })
-FUZZ_TARGET_DESERIALIZE(netaddr_deserialize, {
+FUZZ_TARGET(netaddr_deserialize, .init = initialize_deserialize)
-    CNetAddr na;
+{
-    DeserializeFromFuzzingInput(buffer, na);
+    FuzzedDataProvider fdp{buffer.data(), buffer.size()};
+    const auto maybe_na{ConsumeDeserializable<CNetAddr>(fdp, ConsumeDeserializationParams<CNetAddr::SerParams>(fdp))};
+    if (!maybe_na) return;
+    const CNetAddr& na{*maybe_na};
     if (na.IsAddrV1Compatible()) {
-        AssertEqualAfterSerializeDeserialize(na);
+        AssertEqualAfterSerializeDeserialize(na, ConsumeDeserializationParams<CNetAddr::SerParams>(fdp));
     }
-    AssertEqualAfterSerializeDeserialize(na, INIT_PROTO_VERSION | ADDRV2_FORMAT);
+    AssertEqualAfterSerializeDeserialize(na, CNetAddr::V2);
-})
+}
-FUZZ_TARGET_DESERIALIZE(service_deserialize, {
+FUZZ_TARGET(service_deserialize, .init = initialize_deserialize)
-    CService s;
+{
-    DeserializeFromFuzzingInput(buffer, s);
+    FuzzedDataProvider fdp{buffer.data(), buffer.size()};
+    const auto ser_params{ConsumeDeserializationParams<CNetAddr::SerParams>(fdp)};
+    const auto maybe_s{ConsumeDeserializable<CService>(fdp, ser_params)};
+    if (!maybe_s) return;
+    const CService& s{*maybe_s};
     if (s.IsAddrV1Compatible()) {
-        AssertEqualAfterSerializeDeserialize(s);
+        AssertEqualAfterSerializeDeserialize(s, ConsumeDeserializationParams<CNetAddr::SerParams>(fdp));
     }
-    AssertEqualAfterSerializeDeserialize(s, INIT_PROTO_VERSION | ADDRV2_FORMAT);
+    AssertEqualAfterSerializeDeserialize(s, CNetAddr::V2);
-    CService s1;
+    if (ser_params.enc == CNetAddr::Encoding::V1) {
-    DeserializeFromFuzzingInput(buffer, s1, INIT_PROTO_VERSION);
+        assert(s.IsAddrV1Compatible());
-    AssertEqualAfterSerializeDeserialize(s1, INIT_PROTO_VERSION);
+    }
-    assert(s1.IsAddrV1Compatible());
+}
-    CService s2;
-    DeserializeFromFuzzingInput(buffer, s2, INIT_PROTO_VERSION | ADDRV2_FORMAT);
-    AssertEqualAfterSerializeDeserialize(s2, INIT_PROTO_VERSION | ADDRV2_FORMAT);
-})
 FUZZ_TARGET_DESERIALIZE(messageheader_deserialize, {
     CMessageHeader mh;
     DeserializeFromFuzzingInput(buffer, mh);
     (void)mh.IsCommandValid();
 })
-FUZZ_TARGET_DESERIALIZE(address_deserialize_v1_notime, {
+FUZZ_TARGET(address_deserialize, .init = initialize_deserialize)
-    CAddress a;
+{
-    DeserializeFromFuzzingInput(buffer, a, INIT_PROTO_VERSION);
+    FuzzedDataProvider fdp{buffer.data(), buffer.size()};
-    // A CAddress without nTime (as is expected under INIT_PROTO_VERSION) will roundtrip
+    const auto ser_enc{ConsumeDeserializationParams<CNetAddr::SerParams>(fdp)};
-    // in all 5 formats (with/without nTime, v1/v2, network/disk)
+    const auto maybe_a{ConsumeDeserializable<CAddress>(fdp, CAddress::SerParams{{ser_enc}, CAddress::Format::Network})};
-    AssertEqualAfterSerializeDeserialize(a, INIT_PROTO_VERSION);
+    if (!maybe_a) return;
-    AssertEqualAfterSerializeDeserialize(a, PROTOCOL_VERSION);
+    const CAddress& a{*maybe_a};
-    AssertEqualAfterSerializeDeserialize(a, 0, SER_DISK);
+    // A CAddress in V1 mode will roundtrip
-    AssertEqualAfterSerializeDeserialize(a, PROTOCOL_VERSION | ADDRV2_FORMAT);
+    // in all 4 formats (v1/v2, network/disk)
-    AssertEqualAfterSerializeDeserialize(a, ADDRV2_FORMAT, SER_DISK);
+    if (ser_enc.enc == CNetAddr::Encoding::V1) {
-})
+        AssertEqualAfterSerializeDeserialize(a, CAddress::V1_NETWORK);
-FUZZ_TARGET_DESERIALIZE(address_deserialize_v1_withtime, {
+        AssertEqualAfterSerializeDeserialize(a, CAddress::V1_DISK);
-    CAddress a;
+        AssertEqualAfterSerializeDeserialize(a, CAddress::V2_NETWORK);
-    DeserializeFromFuzzingInput(buffer, a, PROTOCOL_VERSION);
+        AssertEqualAfterSerializeDeserialize(a, CAddress::V2_DISK);
-    // A CAddress in V1 mode will roundtrip in all 4 formats that have nTime.
+    } else {
-    AssertEqualAfterSerializeDeserialize(a, PROTOCOL_VERSION);
+        // A CAddress in V2 mode will roundtrip in both V2 formats, and also in the V1 formats
-    AssertEqualAfterSerializeDeserialize(a, 0, SER_DISK);
+        // if it's V1 compatible.
-    AssertEqualAfterSerializeDeserialize(a, PROTOCOL_VERSION | ADDRV2_FORMAT);
+        if (a.IsAddrV1Compatible()) {
-    AssertEqualAfterSerializeDeserialize(a, ADDRV2_FORMAT, SER_DISK);
+            AssertEqualAfterSerializeDeserialize(a, CAddress::V1_DISK);
-})
+            AssertEqualAfterSerializeDeserialize(a, CAddress::V1_NETWORK);
-FUZZ_TARGET_DESERIALIZE(address_deserialize_v2, {
+        }
-    CAddress a;
+        AssertEqualAfterSerializeDeserialize(a, CAddress::V2_NETWORK);
-    DeserializeFromFuzzingInput(buffer, a, PROTOCOL_VERSION | ADDRV2_FORMAT);
+        AssertEqualAfterSerializeDeserialize(a, CAddress::V2_DISK);
-    // A CAddress in V2 mode will roundtrip in both V2 formats, and also in the V1 formats
-    // with time if it's V1 compatible.
-    if (a.IsAddrV1Compatible()) {
-        AssertEqualAfterSerializeDeserialize(a, PROTOCOL_VERSION);
-        AssertEqualAfterSerializeDeserialize(a, 0, SER_DISK);
     }
-    AssertEqualAfterSerializeDeserialize(a, PROTOCOL_VERSION | ADDRV2_FORMAT);
+}
-    AssertEqualAfterSerializeDeserialize(a, ADDRV2_FORMAT, SER_DISK);
-})
 FUZZ_TARGET_DESERIALIZE(inv_deserialize, {
     CInv i;
     DeserializeFromFuzzingInput(buffer, i);

src/test/fuzz/net.cpp

@@ -53,7 +53,7 @@ FUZZ_TARGET(net, .init = initialize_net)
                 }
             },
             [&] {
-                const std::optional<CService> service_opt = ConsumeDeserializable<CService>(fuzzed_data_provider);
+                const std::optional<CService> service_opt = ConsumeDeserializable<CService>(fuzzed_data_provider, ConsumeDeserializationParams<CNetAddr::SerParams>(fuzzed_data_provider));
                 if (!service_opt) {
                     return;
                 }

src/test/fuzz/script_sign.cpp

@@ -36,7 +36,8 @@ FUZZ_TARGET(script_sign, .init = initialize_script_sign)
     const std::vector<uint8_t> key = ConsumeRandomLengthByteVector(fuzzed_data_provider, 128);
 
     {
-        CDataStream random_data_stream = ConsumeDataStream(fuzzed_data_provider);
+        DataStream stream{ConsumeDataStream(fuzzed_data_provider)};
+        CDataStream random_data_stream{stream, SER_NETWORK, INIT_PROTO_VERSION}; // temporary copy, to be removed along with the version flag SERIALIZE_TRANSACTION_NO_WITNESS
         std::map<CPubKey, KeyOriginInfo> hd_keypaths;
         try {
             DeserializeHDKeypaths(random_data_stream, key, hd_keypaths);

src/test/fuzz/util.h

@@ -70,9 +70,9 @@ template<typename B = uint8_t>
     return BytesToBits(ConsumeRandomLengthByteVector(fuzzed_data_provider, max_length));
 }
 
-[[nodiscard]] inline CDataStream ConsumeDataStream(FuzzedDataProvider& fuzzed_data_provider, const std::optional<size_t>& max_length = std::nullopt) noexcept
+[[nodiscard]] inline DataStream ConsumeDataStream(FuzzedDataProvider& fuzzed_data_provider, const std::optional<size_t>& max_length = std::nullopt) noexcept
 {
-    return CDataStream{ConsumeRandomLengthByteVector(fuzzed_data_provider, max_length), SER_NETWORK, INIT_PROTO_VERSION};
+    return DataStream{ConsumeRandomLengthByteVector(fuzzed_data_provider, max_length)};
 }
 
 [[nodiscard]] inline std::vector<std::string> ConsumeRandomLengthStringVector(FuzzedDataProvider& fuzzed_data_provider, const size_t max_vector_size = 16, const size_t max_string_length = 16) noexcept
@@ -96,6 +96,23 @@ template <typename T>
     return r;
 }
 
+template <typename P>
+[[nodiscard]] P ConsumeDeserializationParams(FuzzedDataProvider& fuzzed_data_provider) noexcept;
+
+template <typename T, typename P>
+[[nodiscard]] std::optional<T> ConsumeDeserializable(FuzzedDataProvider& fuzzed_data_provider, const P& params, const std::optional<size_t>& max_length = std::nullopt) noexcept
+{
+    const std::vector<uint8_t> buffer{ConsumeRandomLengthByteVector(fuzzed_data_provider, max_length)};
+    DataStream ds{buffer};
+    T obj;
+    try {
+        ds >> WithParams(params, obj);
+    } catch (const std::ios_base::failure&) {
+        return std::nullopt;
+    }
+    return obj;
+}
+
 template <typename T>
 [[nodiscard]] inline std::optional<T> ConsumeDeserializable(FuzzedDataProvider& fuzzed_data_provider, const std::optional<size_t>& max_length = std::nullopt) noexcept
 {

src/test/fuzz/util/net.cpp

@@ -55,6 +55,27 @@ CAddress ConsumeAddress(FuzzedDataProvider& fuzzed_data_provider) noexcept
     return {ConsumeService(fuzzed_data_provider), ConsumeWeakEnum(fuzzed_data_provider, ALL_SERVICE_FLAGS), NodeSeconds{std::chrono::seconds{fuzzed_data_provider.ConsumeIntegral<uint32_t>()}}};
 }
 
+template <typename P>
+P ConsumeDeserializationParams(FuzzedDataProvider& fuzzed_data_provider) noexcept
+{
+    constexpr std::array ADDR_ENCODINGS{
+        CNetAddr::Encoding::V1,
+        CNetAddr::Encoding::V2,
+    };
+    constexpr std::array ADDR_FORMATS{
+        CAddress::Format::Disk,
+        CAddress::Format::Network,
+    };
+    if constexpr (std::is_same_v<P, CNetAddr::SerParams>) {
+        return P{PickValue(fuzzed_data_provider, ADDR_ENCODINGS)};
+    }
+    if constexpr (std::is_same_v<P, CAddress::SerParams>) {
+        return P{{PickValue(fuzzed_data_provider, ADDR_ENCODINGS)}, PickValue(fuzzed_data_provider, ADDR_FORMATS)};
+    }
+}
+template CNetAddr::SerParams ConsumeDeserializationParams(FuzzedDataProvider&) noexcept;
+template CAddress::SerParams ConsumeDeserializationParams(FuzzedDataProvider&) noexcept;
+
 FuzzedSock::FuzzedSock(FuzzedDataProvider& fuzzed_data_provider)
     : m_fuzzed_data_provider{fuzzed_data_provider}, m_selectable{fuzzed_data_provider.ConsumeBool()}
 {

src/test/net_tests.cpp

@@ -327,19 +327,20 @@ BOOST_AUTO_TEST_CASE(cnetaddr_tostring_canonical_ipv6)
 BOOST_AUTO_TEST_CASE(cnetaddr_serialize_v1)
 {
     CNetAddr addr;
-    CDataStream s(SER_NETWORK, PROTOCOL_VERSION);
+    DataStream s{};
+    const auto ser_params{CAddress::V1_NETWORK};
 
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "00000000000000000000000000000000");
     s.clear();
 
     addr = LookupHost("1.2.3.4", false).value();
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "00000000000000000000ffff01020304");
     s.clear();
 
     addr = LookupHost("1a1b:2a2b:3a3b:4a4b:5a5b:6a6b:7a7b:8a8b", false).value();
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "1a1b2a2b3a3b4a4b5a5b6a6b7a7b8a8b");
     s.clear();
 
@@ -347,12 +348,12 @@ BOOST_AUTO_TEST_CASE(cnetaddr_serialize_v1)
     BOOST_CHECK(!addr.SetSpecial("6hzph5hv6337r6p2.onion"));
 
     BOOST_REQUIRE(addr.SetSpecial("pg6mmjiyjmcrsslvykfwnntlaru7p5svn6y2ymmju6nubxndf4pscryd.onion"));
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "00000000000000000000000000000000");
     s.clear();
 
     addr.SetInternal("a");
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "fd6b88c08724ca978112ca1bbdcafac2");
     s.clear();
 }
@@ -360,22 +361,20 @@ BOOST_AUTO_TEST_CASE(cnetaddr_serialize_v1)
 BOOST_AUTO_TEST_CASE(cnetaddr_serialize_v2)
 {
     CNetAddr addr;
-    CDataStream s(SER_NETWORK, PROTOCOL_VERSION);
+    DataStream s{};
-    // Add ADDRV2_FORMAT to the version so that the CNetAddr
+    const auto ser_params{CAddress::V2_NETWORK};
-    // serialize method produces an address in v2 format.
-    s.SetVersion(s.GetVersion() | ADDRV2_FORMAT);
 
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "021000000000000000000000000000000000");
     s.clear();
 
     addr = LookupHost("1.2.3.4", false).value();
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "010401020304");
     s.clear();
 
     addr = LookupHost("1a1b:2a2b:3a3b:4a4b:5a5b:6a6b:7a7b:8a8b", false).value();
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "02101a1b2a2b3a3b4a4b5a5b6a6b7a7b8a8b");
     s.clear();
 
@@ -383,12 +382,12 @@ BOOST_AUTO_TEST_CASE(cnetaddr_serialize_v2)
     BOOST_CHECK(!addr.SetSpecial("6hzph5hv6337r6p2.onion"));
 
     BOOST_REQUIRE(addr.SetSpecial("kpgvmscirrdqpekbqjsvw5teanhatztpp2gl6eee4zkowvwfxwenqaid.onion"));
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "042053cd5648488c4707914182655b7664034e09e66f7e8cbf1084e654eb56c5bd88");
     s.clear();
 
     BOOST_REQUIRE(addr.SetInternal("a"));
-    s << addr;
+    s << WithParams(ser_params, addr);
     BOOST_CHECK_EQUAL(HexStr(s), "0210fd6b88c08724ca978112ca1bbdcafac2");
     s.clear();
 }
@@ -396,16 +395,14 @@ BOOST_AUTO_TEST_CASE(cnetaddr_serialize_v2)
 BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
 {
     CNetAddr addr;
-    CDataStream s(SER_NETWORK, PROTOCOL_VERSION);
+    DataStream s{};
-    // Add ADDRV2_FORMAT to the version so that the CNetAddr
+    const auto ser_params{CAddress::V2_NETWORK};
-    // unserialize method expects an address in v2 format.
-    s.SetVersion(s.GetVersion() | ADDRV2_FORMAT);
 
     // Valid IPv4.
     s << Span{ParseHex("01"          // network type (IPv4)
                        "04"          // address length
                        "01020304")}; // address
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsIPv4());
     BOOST_CHECK(addr.IsAddrV1Compatible());
@@ -416,7 +413,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s << Span{ParseHex("01"      // network type (IPv4)
                        "04"      // address length
                        "0102")}; // address
-    BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure, HasReason("end of data"));
+    BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure, HasReason("end of data"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
 
@@ -424,7 +421,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s << Span{ParseHex("01"          // network type (IPv4)
                        "05"          // address length
                        "01020304")}; // address
-    BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
+    BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
                           HasReason("BIP155 IPv4 address with length 5 (should be 4)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
@@ -433,7 +430,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s << Span{ParseHex("01"          // network type (IPv4)
                        "fd0102"      // address length (513 as CompactSize)
                        "01020304")}; // address
-    BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
+    BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
                           HasReason("Address too long: 513 > 512"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
@@ -442,7 +439,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s << Span{ParseHex("02"                                  // network type (IPv6)
                        "10"                                  // address length
                        "0102030405060708090a0b0c0d0e0f10")}; // address
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsIPv6());
     BOOST_CHECK(addr.IsAddrV1Compatible());
@@ -455,7 +452,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
         "10"                                  // address length
         "fd6b88c08724ca978112ca1bbdcafac2")}; // address: 0xfd + sha256("bitcoin")[0:5] +
                                               // sha256(name)[0:10]
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(addr.IsInternal());
     BOOST_CHECK(addr.IsAddrV1Compatible());
     BOOST_CHECK_EQUAL(addr.ToStringAddr(), "zklycewkdo64v6wc.internal");
@@ -465,7 +462,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s << Span{ParseHex("02"    // network type (IPv6)
                        "04"    // address length
                        "00")}; // address
-    BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
+    BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
                           HasReason("BIP155 IPv6 address with length 4 (should be 16)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
@@ -474,7 +471,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s << Span{ParseHex("02"                                  // network type (IPv6)
                        "10"                                  // address length
                        "00000000000000000000ffff01020304")}; // address
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 
@@ -482,7 +479,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s << Span{ParseHex("02"                                  // network type (IPv6)
                        "10"                                  // address length
                        "fd87d87eeb430102030405060708090a")}; // address
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 
@@ -490,7 +487,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
     s << Span{ParseHex("03"                      // network type (TORv2)
                        "0a"                      // address length
                        "f1f2f3f4f5f6f7f8f9fa")}; // address
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 
@@ -500,7 +497,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "79bcc625184b05194975c28b66b66b04" // address
                        "69f7f6556fb1ac3189a79b40dda32f1f"
                        )};
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsTor());
     BOOST_CHECK(!addr.IsAddrV1Compatible());
@@ -513,7 +510,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "00" // address length
                        "00" // address
                        )};
-    BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
+    BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
                           HasReason("BIP155 TORv3 address with length 0 (should be 32)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
@@ -523,7 +520,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "20"                               // address length
                        "a2894dabaec08c0051a481a6dac88b64" // address
                        "f98232ae42d4b6fd2fa81952dfe36a87")};
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsI2P());
     BOOST_CHECK(!addr.IsAddrV1Compatible());
@@ -536,7 +533,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "03" // address length
                        "00" // address
                        )};
-    BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
+    BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
                           HasReason("BIP155 I2P address with length 3 (should be 32)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
@@ -546,7 +543,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "10"                               // address length
                        "fc000001000200030004000500060007" // address
                        )};
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(addr.IsValid());
     BOOST_CHECK(addr.IsCJDNS());
     BOOST_CHECK(!addr.IsAddrV1Compatible());
@@ -558,7 +555,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "10"                               // address length
                        "aa000001000200030004000500060007" // address
                        )};
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(addr.IsCJDNS());
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
@@ -568,7 +565,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "01" // address length
                        "00" // address
                        )};
-    BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
+    BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
                           HasReason("BIP155 CJDNS address with length 1 (should be 16)"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
@@ -578,7 +575,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "fe00000002"     // address length (CompactSize's MAX_SIZE)
                        "01020304050607" // address
                        )};
-    BOOST_CHECK_EXCEPTION(s >> addr, std::ios_base::failure,
+    BOOST_CHECK_EXCEPTION(s >> WithParams(ser_params, addr), std::ios_base::failure,
                           HasReason("Address too long: 33554432 > 512"));
     BOOST_REQUIRE(!s.empty()); // The stream is not consumed on invalid input.
     s.clear();
@@ -588,7 +585,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "04"       // address length
                        "01020304" // address
                        )};
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 
@@ -597,7 +594,7 @@ BOOST_AUTO_TEST_CASE(cnetaddr_unserialize_v2)
                        "00" // address length
                        ""   // address
                        )};
-    s >> addr;
+    s >> WithParams(ser_params, addr);
     BOOST_CHECK(!addr.IsValid());
     BOOST_REQUIRE(s.empty());
 }
@@ -852,7 +849,7 @@ BOOST_AUTO_TEST_CASE(initial_advertise_from_version_message)
     std::chrono::microseconds time_received_dummy{0};
 
     const auto msg_version =
-        msg_maker.Make(NetMsgType::VERSION, PROTOCOL_VERSION, services, time, services, peer_us);
+        msg_maker.Make(NetMsgType::VERSION, PROTOCOL_VERSION, services, time, services, WithParams(CAddress::V1_NETWORK, peer_us));
     CDataStream msg_version_stream{msg_version.data, SER_NETWORK, PROTOCOL_VERSION};
 
     m_node.peerman->ProcessMessage(
@@ -875,10 +872,10 @@ BOOST_AUTO_TEST_CASE(initial_advertise_from_version_message)
                                         Span<const unsigned char> data,
                                         bool is_incoming) -> void {
         if (!is_incoming && msg_type == "addr") {
-            CDataStream s(data, SER_NETWORK, PROTOCOL_VERSION);
+            DataStream s{data};
             std::vector<CAddress> addresses;
 
-            s >> addresses;
+            s >> WithParams(CAddress::V1_NETWORK, addresses);
 
             for (const auto& addr : addresses) {
                 if (addr == expected) {

src/test/netbase_tests.cpp

@@ -559,35 +559,35 @@ static constexpr const char* stream_addrv2_hex =
 
 BOOST_AUTO_TEST_CASE(caddress_serialize_v1)
 {
-    CDataStream s(SER_NETWORK, PROTOCOL_VERSION);
+    DataStream s{};
 
-    s << fixture_addresses;
+    s << WithParams(CAddress::V1_NETWORK, fixture_addresses);
     BOOST_CHECK_EQUAL(HexStr(s), stream_addrv1_hex);
 }
 
 BOOST_AUTO_TEST_CASE(caddress_unserialize_v1)
 {
-    CDataStream s(ParseHex(stream_addrv1_hex), SER_NETWORK, PROTOCOL_VERSION);
+    DataStream s{ParseHex(stream_addrv1_hex)};
     std::vector<CAddress> addresses_unserialized;
 
-    s >> addresses_unserialized;
+    s >> WithParams(CAddress::V1_NETWORK, addresses_unserialized);
     BOOST_CHECK(fixture_addresses == addresses_unserialized);
 }
 
 BOOST_AUTO_TEST_CASE(caddress_serialize_v2)
 {
-    CDataStream s(SER_NETWORK, PROTOCOL_VERSION | ADDRV2_FORMAT);
+    DataStream s{};
 
-    s << fixture_addresses;
+    s << WithParams(CAddress::V2_NETWORK, fixture_addresses);
     BOOST_CHECK_EQUAL(HexStr(s), stream_addrv2_hex);
 }
 
 BOOST_AUTO_TEST_CASE(caddress_unserialize_v2)
 {
-    CDataStream s(ParseHex(stream_addrv2_hex), SER_NETWORK, PROTOCOL_VERSION | ADDRV2_FORMAT);
+    DataStream s{ParseHex(stream_addrv2_hex)};
     std::vector<CAddress> addresses_unserialized;
 
-    s >> addresses_unserialized;
+    s >> WithParams(CAddress::V2_NETWORK, addresses_unserialized);
     BOOST_CHECK(fixture_addresses == addresses_unserialized);
 }
 

src/test/util/net.cpp

@@ -33,9 +33,9 @@ void ConnmanTestMsg::Handshake(CNode& node,
                 Using<CustomUintFormatter<8>>(remote_services), //
                 int64_t{},                                      // dummy time
                 int64_t{},                                      // ignored service bits
-                CService{},                                     // dummy
+                WithParams(CNetAddr::V1, CService{}),           // dummy
                 int64_t{},                                      // ignored service bits
-                CService{},                                     // ignored
+                WithParams(CNetAddr::V1, CService{}),           // ignored
                 uint64_t{1},                                    // dummy nonce
                 std::string{},                                  // dummy subver
                 int32_t{},                                      // dummy starting_height

src/version.h

@@ -36,6 +36,6 @@ static const int INVALID_CB_NO_BAN_VERSION = 70015;
 static const int WTXID_RELAY_VERSION = 70016;
 
 // Make sure that none of the values above collide with
-// `SERIALIZE_TRANSACTION_NO_WITNESS` or `ADDRV2_FORMAT`.
+// `SERIALIZE_TRANSACTION_NO_WITNESS`.
 
 #endif // BITCOIN_VERSION_H