[ZocoLini]

Closes #1132. Part of #1047. Reuses MasternodePayoutShare and the extended netInfo from #1138.

ProRegTx version 3 (ExtAddr, gated on v24) changes the layout after nOperatorReward (Core src/evo/providertx.h, CProRegTx): the service is an extended netInfo, scriptPayout is replaced by DIP-0026 payouts, and shared collateral terms follow (a u8 share count, the shares, one 65-byte join signature per share without length prefix, nEarlyPeriodBlocks, nEarlyPenalty). Evo nodes write only platformNodeID. We decoded version 3 with the old layout, misaligning the block.

Changes

• ProviderRegistrationPayload::service_address: MasternodeNetInfo, as in ProUpServTx: Legacy before version 3, Extended from it. new() still takes a SocketAddr.
• New payouts: Option<Vec<MasternodePayoutShare>> and shared_collateral: Option<SharedCollateral>, present from version 3. New SharedCollateral, CollateralShare and JoinSignature.
• Versions 0 and above 3 are rejected on decode, like Core.
• Hand-written bincode and serde keeping the pre-v3 shape, so data persisted before keeps decoding. Version 3 writes the extended addresses as net_info and appends the new fields.
• payload_collateral_string errors for version 3, whose sign string lists the payouts.

Breaking: service_address changes type and the payload has two new public fields.

Not in this PR

• The wallet matches ProRegTx payouts through script_payout only, and the FFI view exposes the primary service address only, as for ProUpRegTx/ProUpServTx in feat(dash)!: decode and encode ProUpServTx and ProUpRegTx version 3 #1138.

Testing

• Unit: round trips of v2 and v3 payloads (regular, shared, shared Evo) in consensus, bincode and serde; v3 byte layout (netInfo, payout and share counts, join signatures, Evo node id without ports); versions 0 and 4 rejected; encoding fails on mismatched address form, missing v3 fields or a missing join signature; v2 bincode, binary serde and JSON identical to the earlier derived impls; JSON rejects the fields of another version.
• cargo test -p dashcore -p key-wallet -p key-wallet-ffi -p key-wallet-manager, clippy -D warnings.
• No real v3 transaction vectors yet: our regtest dashd doesn't run v24.

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PR Hygiene · 8e8218f

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  • files with no dedicated owner (dash/src/blockdata/transaction/special_transaction/provider_registration.rs, dash/src/blockdata/transaction/special_transaction/provider_update_service.rs, key-wallet-ffi/src/special_payload.rs) — QuantumExplorer or xdustinface
  • key-wallet (key-wallet/src/tests/keep_finalized_transactions_tests.rs, key-wallet/src/tests/special_transaction_matching_tests.rs, key-wallet/src/tests/special_transaction_tests.rs and 1 more) — QuantumExplorer or xdustinface

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Summary by CodeRabbit

• New Features
  • Added support for version 3 provider registrations, including extended service addresses, multiple payouts, shared-collateral terms, and updated platform-node information.
  • Provider registrations now expose their primary service address, with an unspecified address shown when none is available.
• Bug Fixes
  • Added validation for version-specific fields and combinations, including address formats, payouts, collateral shares, and signatures.
  • Preserved compatibility with earlier provider-registration serialization formats.

[coderabbitai]

📝 Walkthrough

Walkthrough

Provider registration payloads now support the ProRegTx version 3 layout, including extended network information, payouts, and shared collateral. Versioned consensus and serialization paths retain earlier layouts. Wallet-facing address access and legacy fixtures now use MasternodeNetInfo.

Changes

ProRegTx payload layouts

Layer / File(s)	Summary
Versioned payload contract and consensus layout dash/src/blockdata/transaction/special_transaction/provider_registration.rs	The payload uses version-dependent service addresses, payouts, shared-collateral data, and Evo platform fields. Consensus encoding validates address and required-field combinations; decoding selects the layout by version.
Versioned serialization and compatibility dash/src/blockdata/transaction/special_transaction/provider_registration.rs	Custom bincode and serde implementations conditionally include version 3 fields while retaining earlier field layouts. Tests cover version 2 and 3 round trips, wire layout, invalid combinations, and serialization compatibility.
Address access and legacy fixtures key-wallet-ffi/src/special_payload.rs, key-wallet/src/tests/*, key-wallet/src/transaction_checking/transaction_router/tests/provider.rs, dash/src/blockdata/transaction/special_transaction/provider_registration.rs, dash/src/blockdata/transaction/special_transaction/provider_update_service.rs	FFI address conversion reads the primary address from MasternodeNetInfo and uses an unspecified IPv6 address on port 0 when none exists. Existing fixtures wrap legacy addresses in MasternodeNetInfo::Legacy and set the new optional fields to None. A service-address test switches to debug formatting.

Priority: ➖ Normal

Estimated code review effort: 4 (Complex) | ~45 minutes

Change: Feature

Suggested reviewers: quantumexplorer

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Merge Risk: 🔵 Low · up to 8e821

Version 3 provider registration payloads can be deserialized without their required payout or shared-collateral data. Such a payload cannot be encoded, and hashing it crashes. Add validation at deserialization before or soon after merging. Earlier-version formats are preserved.

Pre-merge checks | 4 | 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 60.42% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 48 functions across 7 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly and concisely describes the main change: adding ProRegTx version 3 encoding and decoding.
Linked Issues check		The changes satisfy the coding requirements in #1132. ProviderRegistrationPayload selects legacy or extended MasternodeNetInfo by version. Version 3 encodes and decodes DIP-0026 payouts, shared-…
Out of Scope Changes check		The changed wallet fixtures and FFI conversion update consumers for the public service_address, payouts, and shared_collateral changes. The provider update-service formatting change supports the…

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[codecov]

Codecov Report

❌ Patch coverage is 94.02460% with 34 lines in your changes missing coverage. Please review.
✅ Project coverage is 78.42%. Comparing base (0d215f3) to head (8e8218f).

Files with missing lines	Patch %	Lines
...ction/special_transaction/provider_registration.rs	93.88%	34 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1152      +/-   ##
==========================================
+ Coverage   78.26%   78.42%   +0.15%     
==========================================
  Files         298      298              
  Lines       78629    79157     +528     
==========================================
+ Hits        61541    62076     +535     
+ Misses      17088    17081       -7     

Flag	Coverage Δ
core	76.44% <93.89%> (+0.71%)	⬆️
ffi	52.10% <100.00%> (+0.03%)	⬆️
rpc	49.36% <ø> (ø)
spv	92.39% <ø> (-0.04%)	⬇️
wallet	82.08% <ø> (ø)

Files with missing lines	Coverage Δ
...ion/special_transaction/provider_update_service.rs	91.10% <100.00%> (ø)
key-wallet-ffi/src/special_payload.rs	92.75% <100.00%> (+0.20%)	⬆️
...ction/special_transaction/provider_registration.rs	81.17% <93.88%> (+14.23%)	⬆️

... and 8 files with indirect coverage changes

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Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

🤖 Prompt to fix review comments

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Inline comments:
Review comments at
@dash/src/blockdata/transaction/special_transaction/provider_registration.rs:
- Around line 827-835: Validate that version 3 payloads include both payouts and
shared_collateral at the deserialization boundary; reject either missing value
instead of accepting None. Apply the check in the map deserializer, visit_seq,
and bincode::Decode, while preserving behavior for other versions.

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📥 Commits

Reviewing files that changed from the base of the PR and between 0d215f3 and 8e8218f.

📒 Files selected for processing (7)

• dash/src/blockdata/transaction/special_transaction/provider_registration.rs
• dash/src/blockdata/transaction/special_transaction/provider_update_service.rs
• key-wallet-ffi/src/special_payload.rs
• key-wallet/src/tests/keep_finalized_transactions_tests.rs
• key-wallet/src/tests/special_transaction_matching_tests.rs
• key-wallet/src/tests/special_transaction_tests.rs
• key-wallet/src/transaction_checking/transaction_router/tests/provider.rs

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